xref: /llvm-project-15.0.7/llvm/unittests/CodeGen/GlobalISel/LegalizerHelperTest.cpp (revision 3754f601)

//===- LegalizerHelperTest.cpp
//-----------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//

#include "GISelMITest.h"
#include "llvm/CodeGen/GlobalISel/LostDebugLocObserver.h"

using namespace LegalizeActions;
using namespace LegalizeMutations;
using namespace LegalityPredicates;

namespace {

class DummyGISelObserver : public GISelChangeObserver {
public:
  void changingInstr(MachineInstr &MI) override {}
  void changedInstr(MachineInstr &MI) override {}
  void createdInstr(MachineInstr &MI) override {}
  void erasingInstr(MachineInstr &MI) override {}
};

// Test G_ROTL/G_ROTR lowering.
TEST_F(AArch64GISelMITest, LowerRotates) {
  setUp();
  if (!TM)
    return;

  // Declare your legalization info
  DefineLegalizerInfo(A, {
    getActionDefinitionsBuilder({G_ROTR, G_ROTL}).lower(); });

  LLT S32 = LLT::scalar(32);
  auto Src = B.buildTrunc(S32, Copies[0]);
  auto Amt = B.buildTrunc(S32, Copies[1]);
  auto ROTR = B.buildInstr(TargetOpcode::G_ROTR, {S32}, {Src, Amt});
  auto ROTL = B.buildInstr(TargetOpcode::G_ROTL, {S32}, {Src, Amt});

  AInfo Info(MF->getSubtarget());
  DummyGISelObserver Observer;
  LegalizerHelper Helper(*MF, Info, Observer, B);
  // Perform Legalization
  EXPECT_EQ(LegalizerHelper::LegalizeResult::Legalized,
            Helper.lower(*ROTR, 0, S32));
  EXPECT_EQ(LegalizerHelper::LegalizeResult::Legalized,
            Helper.lower(*ROTL, 0, S32));

  auto CheckStr = R"(
  ; Check G_ROTR
  CHECK: [[SRC:%[0-9]+]]:_(s32) = G_TRUNC
  CHECK: [[AMT:%[0-9]+]]:_(s32) = G_TRUNC
  CHECK: [[C:%[0-9]+]]:_(s32) = G_CONSTANT i32 0
  CHECK: [[C1:%[0-9]+]]:_(s32) = G_CONSTANT i32 31
  CHECK: [[SUB:%[0-9]+]]:_(s32) = G_SUB [[C]]:_, [[AMT]]:_
  CHECK: [[AND:%[0-9]+]]:_(s32) = G_AND [[AMT]]:_, [[C1]]:_
  CHECK: [[LSHR:%[0-9]+]]:_(s32) = G_LSHR [[SRC]]:_, [[AND]]:_(s32)
  CHECK: [[AND1:%[0-9]+]]:_(s32) = G_AND [[SUB]]:_, [[C1]]:_
  CHECK: [[SHL:%[0-9]+]]:_(s32) = G_SHL [[SRC]]:_, [[AND1]]:_(s32)
  CHECK: G_OR [[LSHR]]:_, [[SHL]]:_

  ; Check G_ROTL
  CHECK: [[C:%[0-9]+]]:_(s32) = G_CONSTANT i32 0
  CHECK: [[C1:%[0-9]+]]:_(s32) = G_CONSTANT i32 31
  CHECK: [[SUB:%[0-9]+]]:_(s32) = G_SUB [[C]]:_, [[AMT]]:_
  CHECK: [[AND:%[0-9]+]]:_(s32) = G_AND [[AMT]]:_, [[C1]]:_
  CHECK: [[SHL:%[0-9]+]]:_(s32) = G_SHL [[SRC]]:_, [[AND]]:_(s32)
  CHECK: [[AND1:%[0-9]+]]:_(s32) = G_AND [[SUB]]:_, [[C1]]:_
  CHECK: [[LSHR:%[0-9]+]]:_(s32) = G_LSHR [[SRC]]:_, [[AND1]]:_(s32)
  CHECK: G_OR [[SHL]]:_, [[LSHR]]:_
  )";

  // Check
  EXPECT_TRUE(CheckMachineFunction(*MF, CheckStr)) << *MF;
}

// Test G_ROTL/G_ROTR non-pow2 lowering.
TEST_F(AArch64GISelMITest, LowerRotatesNonPow2) {
  setUp();
  if (!TM)
    return;

  // Declare your legalization info
  DefineLegalizerInfo(A, {
    getActionDefinitionsBuilder({G_ROTR, G_ROTL}).lower(); });

  LLT S24 = LLT::scalar(24);
  auto Src = B.buildTrunc(S24, Copies[0]);
  auto Amt = B.buildTrunc(S24, Copies[1]);
  auto ROTR = B.buildInstr(TargetOpcode::G_ROTR, {S24}, {Src, Amt});
  auto ROTL = B.buildInstr(TargetOpcode::G_ROTL, {S24}, {Src, Amt});

  AInfo Info(MF->getSubtarget());
  DummyGISelObserver Observer;
  LegalizerHelper Helper(*MF, Info, Observer, B);
  // Perform Legalization
  EXPECT_EQ(LegalizerHelper::LegalizeResult::Legalized,
            Helper.lower(*ROTR, 0, S24));
  EXPECT_EQ(LegalizerHelper::LegalizeResult::Legalized,
            Helper.lower(*ROTL, 0, S24));

  auto CheckStr = R"(
  ; Check G_ROTR
  CHECK: [[SRC:%[0-9]+]]:_(s24) = G_TRUNC
  CHECK: [[AMT:%[0-9]+]]:_(s24) = G_TRUNC
  CHECK: [[C:%[0-9]+]]:_(s24) = G_CONSTANT i24 0
  CHECK: [[C1:%[0-9]+]]:_(s24) = G_CONSTANT i24 23
  CHECK: [[C2:%[0-9]+]]:_(s24) = G_CONSTANT i24 24
  CHECK: [[UREM:%[0-9]+]]:_(s24) = G_UREM [[AMT]]:_, [[C2]]:_
  CHECK: [[LSHR:%[0-9]+]]:_(s24) = G_LSHR [[SRC]]:_, [[UREM]]:_(s24)
  CHECK: [[SUB:%[0-9]+]]:_(s24) = G_SUB [[C1]]:_, [[UREM]]:_
  CHECK: [[C4:%[0-9]+]]:_(s24) = G_CONSTANT i24 1
  CHECK: [[SHL:%[0-9]+]]:_(s24) = G_SHL [[SRC]]:_, [[C4]]:_(s24)
  CHECK: [[SHL2:%[0-9]+]]:_(s24) = G_SHL [[SHL]]:_, [[SUB]]:_(s24)
  CHECK: G_OR [[LSHR]]:_, [[SHL2]]:_

  ; Check G_ROTL
  CHECK: [[C:%[0-9]+]]:_(s24) = G_CONSTANT i24 0
  CHECK: [[C1:%[0-9]+]]:_(s24) = G_CONSTANT i24 23
  CHECK: [[C2:%[0-9]+]]:_(s24) = G_CONSTANT i24 24
  CHECK: [[UREM:%[0-9]+]]:_(s24) = G_UREM [[AMT]]:_, [[C2]]:_
  CHECK: [[SHL:%[0-9]+]]:_(s24) = G_SHL [[SRC]]:_, [[UREM]]:_(s24)
  CHECK: [[SUB:%[0-9]+]]:_(s24) = G_SUB [[C1]]:_, [[UREM]]:_
  CHECK: [[C4:%[0-9]+]]:_(s24) = G_CONSTANT i24 1
  CHECK: [[LSHR:%[0-9]+]]:_(s24) = G_LSHR [[SRC]]:_, [[C4]]:_(s24)
  CHECK: [[LSHR2:%[0-9]+]]:_(s24) = G_LSHR [[LSHR]]:_, [[SUB]]:_(s24)
  CHECK: G_OR [[SHL]]:_, [[LSHR2]]:_
  )";

  // Check
  EXPECT_TRUE(CheckMachineFunction(*MF, CheckStr)) << *MF;
}

// Test vector G_ROTR lowering.
TEST_F(AArch64GISelMITest, LowerRotatesVector) {
  setUp();
  if (!TM)
    return;

  // Declare your legalization info
  DefineLegalizerInfo(A, {
    getActionDefinitionsBuilder({G_ROTR, G_ROTL}).lower(); });

  LLT S32 = LLT::scalar(32);
  LLT V4S32 = LLT::fixed_vector(4, S32);
  auto SrcTrunc = B.buildTrunc(S32, Copies[0]);
  auto Src = B.buildSplatVector(V4S32, SrcTrunc);
  auto AmtTrunc = B.buildTrunc(S32, Copies[1]);
  auto Amt = B.buildSplatVector(V4S32, AmtTrunc);
  auto ROTR = B.buildInstr(TargetOpcode::G_ROTR, {V4S32}, {Src, Amt});

  AInfo Info(MF->getSubtarget());
  DummyGISelObserver Observer;
  LegalizerHelper Helper(*MF, Info, Observer, B);
  // Perform Legalization
  EXPECT_EQ(LegalizerHelper::LegalizeResult::Legalized,
            Helper.lower(*ROTR, 0, V4S32));

  auto CheckStr = R"(
  CHECK: [[SRCTRUNC:%[0-9]+]]:_(s32) = G_TRUNC
  CHECK: [[SRC:%[0-9]+]]:_(<4 x s32>) = G_BUILD_VECTOR [[SRCTRUNC]]
  CHECK: [[AMTTRUNC:%[0-9]+]]:_(s32) = G_TRUNC
  CHECK: [[AMT:%[0-9]+]]:_(<4 x s32>) = G_BUILD_VECTOR [[AMTTRUNC]]
  CHECK: [[C:%[0-9]+]]:_(s32) = G_CONSTANT i32 0
  CHECK: [[ZERO:%[0-9]+]]:_(<4 x s32>) = G_BUILD_VECTOR [[C]]
  CHECK: [[C1:%[0-9]+]]:_(s32) = G_CONSTANT i32 31
  CHECK: [[VEC31:%[0-9]+]]:_(<4 x s32>) = G_BUILD_VECTOR [[C1]]
  CHECK: [[SUB:%[0-9]+]]:_(<4 x s32>) = G_SUB [[ZERO]]:_, [[AMT]]:_
  CHECK: [[AND:%[0-9]+]]:_(<4 x s32>) = G_AND [[AMT]]:_, [[VEC31]]:_
  CHECK: [[LSHR:%[0-9]+]]:_(<4 x s32>) = G_LSHR [[SRC]]:_, [[AND]]:_(<4 x s32>)
  CHECK: [[AND1:%[0-9]+]]:_(<4 x s32>) = G_AND [[SUB]]:_, [[VEC31]]:_
  CHECK: [[SHL:%[0-9]+]]:_(<4 x s32>) = G_SHL [[SRC]]:_, [[AND1]]:_(<4 x s32>)
  CHECK: G_OR [[LSHR]]:_, [[SHL]]:_
  )";

  // Check
  EXPECT_TRUE(CheckMachineFunction(*MF, CheckStr)) << *MF;
}

// Test CTTZ expansion when CTTZ_ZERO_UNDEF is legal or custom,
// in which case it becomes CTTZ_ZERO_UNDEF with select.
TEST_F(AArch64GISelMITest, LowerBitCountingCTTZ0) {
  setUp();
  if (!TM)
    return;

  // Declare your legalization info
  DefineLegalizerInfo(A, {
    getActionDefinitionsBuilder(G_CTTZ_ZERO_UNDEF).legalFor({{s32, s64}});
  });
  // Build Instr
  auto MIBCTTZ =
      B.buildInstr(TargetOpcode::G_CTTZ, {LLT::scalar(32)}, {Copies[0]});
  AInfo Info(MF->getSubtarget());
  DummyGISelObserver Observer;
  LegalizerHelper Helper(*MF, Info, Observer, B);
  // Perform Legalization
  EXPECT_EQ(LegalizerHelper::LegalizeResult::Legalized,
            Helper.lower(*MIBCTTZ, 0, LLT::scalar(64)));

  auto CheckStr = R"(
  CHECK: [[CZU:%[0-9]+]]:_(s32) = G_CTTZ_ZERO_UNDEF %0
  CHECK: [[ZERO:%[0-9]+]]:_(s64) = G_CONSTANT i64 0
  CHECK: [[CMP:%[0-9]+]]:_(s1) = G_ICMP intpred(eq), %0:_(s64), [[ZERO]]
  CHECK: [[SIXTY4:%[0-9]+]]:_(s32) = G_CONSTANT i32 64
  CHECK: [[SEL:%[0-9]+]]:_(s32) = G_SELECT [[CMP]]:_(s1), [[SIXTY4]]:_, [[CZU]]
  )";

  // Check
  EXPECT_TRUE(CheckMachineFunction(*MF, CheckStr)) << *MF;
}

// CTTZ expansion in terms of CTLZ
TEST_F(AArch64GISelMITest, LowerBitCountingCTTZ1) {
  setUp();
  if (!TM)
    return;

  // Declare your legalization info
  DefineLegalizerInfo(A, {
    getActionDefinitionsBuilder(G_CTLZ).legalFor({{s64, s64}});
  });
  // Build Instr
  auto MIBCTTZ =
      B.buildInstr(TargetOpcode::G_CTTZ, {LLT::scalar(64)}, {Copies[0]});
  AInfo Info(MF->getSubtarget());
  DummyGISelObserver Observer;
  LegalizerHelper Helper(*MF, Info, Observer, B);
  // Perform Legalization
  EXPECT_TRUE(Helper.lower(*MIBCTTZ, 0, LLT::scalar(64)) ==
              LegalizerHelper::LegalizeResult::Legalized);

  auto CheckStr = R"(
  CHECK: [[NEG1:%[0-9]+]]:_(s64) = G_CONSTANT i64 -1
  CHECK: [[NOT:%[0-9]+]]:_(s64) = G_XOR %0:_, [[NEG1]]
  CHECK: [[SUB1:%[0-9]+]]:_(s64) = G_ADD %0:_, [[NEG1]]
  CHECK: [[AND1:%[0-9]+]]:_(s64) = G_AND [[NOT]]:_, [[SUB1]]:_
  CHECK: [[CST64:%[0-9]+]]:_(s64) = G_CONSTANT i64 64
  CHECK: [[CTLZ:%[0-9]+]]:_(s64) = G_CTLZ [[AND1]]:_
  CHECK: G_SUB [[CST64]]:_, [[CTLZ]]:_
  )";

  // Check
  EXPECT_TRUE(CheckMachineFunction(*MF, CheckStr)) << *MF;
}

// CTLZ scalar narrowing
TEST_F(AArch64GISelMITest, NarrowScalarCTLZ) {
  setUp();
  if (!TM)
    return;

  // Declare your legalization info
  DefineLegalizerInfo(A, {
    getActionDefinitionsBuilder(G_CTLZ).legalFor({{s32, s32}});
  });
  // Build Instr
  auto CTLZ =
      B.buildInstr(TargetOpcode::G_CTLZ, {LLT::scalar(32)}, {Copies[0]});
  AInfo Info(MF->getSubtarget());
  DummyGISelObserver Observer;
  LegalizerHelper Helper(*MF, Info, Observer, B);
  // Perform Legalization
  EXPECT_EQ(LegalizerHelper::LegalizeResult::Legalized,
            Helper.narrowScalar(*CTLZ, 1, LLT::scalar(32)));

  auto CheckStr = R"(
  CHECK: [[UNMERGE_LO:%[0-9]+]]:_(s32), [[UNMERGE_HI:%[0-9]+]]:_(s32) = G_UNMERGE_VALUES %0:_(s64)
  CHECK: [[ZERO:%[0-9]+]]:_(s32) = G_CONSTANT i32 0
  CHECK: [[CMP:%[0-9]+]]:_(s1) = G_ICMP intpred(eq), [[UNMERGE_HI]]:_(s32), [[ZERO]]:_
  CHECK: [[CTLZ_LO:%[0-9]+]]:_(s32) = G_CTLZ [[UNMERGE_LO]]:_(s32)
  CHECK: [[THIRTYTWO:%[0-9]+]]:_(s32) = G_CONSTANT i32 32
  CHECK: [[ADD:%[0-9]+]]:_(s32) = G_ADD [[CTLZ_LO]]:_, [[THIRTYTWO]]:_
  CHECK: [[CTLZ_HI:%[0-9]+]]:_(s32) = G_CTLZ_ZERO_UNDEF [[UNMERGE_HI]]:_(s32)
  CHECK: %{{[0-9]+}}:_(s32) = G_SELECT [[CMP]]:_(s1), [[ADD]]:_, [[CTLZ_HI]]:_
  )";

  // Check
  EXPECT_TRUE(CheckMachineFunction(*MF, CheckStr)) << *MF;
}

// CTTZ scalar narrowing
TEST_F(AArch64GISelMITest, NarrowScalarCTTZ) {
  setUp();
  if (!TM)
    return;

  // Declare your legalization info
  DefineLegalizerInfo(A, {
    getActionDefinitionsBuilder(G_CTTZ).legalFor({{s32, s64}});
  });
  // Build Instr
  auto CTTZ =
      B.buildInstr(TargetOpcode::G_CTTZ, {LLT::scalar(32)}, {Copies[0]});
  AInfo Info(MF->getSubtarget());
  DummyGISelObserver Observer;
  LegalizerHelper Helper(*MF, Info, Observer, B);
  // Perform Legalization
  EXPECT_EQ(LegalizerHelper::LegalizeResult::Legalized,
            Helper.narrowScalar(*CTTZ, 1, LLT::scalar(32)));

  auto CheckStr = R"(
  CHECK: [[UNMERGE_LO:%[0-9]+]]:_(s32), [[UNMERGE_HI:%[0-9]+]]:_(s32) = G_UNMERGE_VALUES %0:_(s64)
  CHECK: [[ZERO:%[0-9]+]]:_(s32) = G_CONSTANT i32 0
  CHECK: [[CMP:%[0-9]+]]:_(s1) = G_ICMP intpred(eq), [[UNMERGE_LO]]:_(s32), [[ZERO]]:_
  CHECK: [[CTTZ_HI:%[0-9]+]]:_(s32) = G_CTTZ [[UNMERGE_HI]]:_(s32)
  CHECK: [[THIRTYTWO:%[0-9]+]]:_(s32) = G_CONSTANT i32 32
  CHECK: [[ADD:%[0-9]+]]:_(s32) = G_ADD [[CTTZ_HI]]:_, [[THIRTYTWO]]:_
  CHECK: [[CTTZ_LO:%[0-9]+]]:_(s32) = G_CTTZ_ZERO_UNDEF [[UNMERGE_LO]]:_(s32)
  CHECK: %{{[0-9]+}}:_(s32) = G_SELECT [[CMP]]:_(s1), [[ADD]]:_, [[CTTZ_LO]]:_
  )";

  // Check
  EXPECT_TRUE(CheckMachineFunction(*MF, CheckStr)) << *MF;
}

// CTTZ expansion in terms of CTPOP
TEST_F(AArch64GISelMITest, LowerBitCountingCTTZ2) {
  setUp();
  if (!TM)
    return;

  // Declare your legalization info
  DefineLegalizerInfo(A, {
    getActionDefinitionsBuilder(G_CTPOP).legalFor({{s64, s64}});
  });
  // Build
  auto MIBCTTZ =
      B.buildInstr(TargetOpcode::G_CTTZ, {LLT::scalar(64)}, {Copies[0]});
  AInfo Info(MF->getSubtarget());
  DummyGISelObserver Observer;
  LegalizerHelper Helper(*MF, Info, Observer, B);

  B.setInsertPt(*EntryMBB, MIBCTTZ->getIterator());
  EXPECT_TRUE(Helper.lower(*MIBCTTZ, 0, LLT::scalar(64)) ==
              LegalizerHelper::LegalizeResult::Legalized);

  auto CheckStr = R"(
  CHECK: [[NEG1:%[0-9]+]]:_(s64) = G_CONSTANT i64 -1
  CHECK: [[NOT:%[0-9]+]]:_(s64) = G_XOR %0:_, [[NEG1]]
  CHECK: [[SUB1:%[0-9]+]]:_(s64) = G_ADD %0:_, [[NEG1]]
  CHECK: [[AND1:%[0-9]+]]:_(s64) = G_AND [[NOT]]:_, [[SUB1]]:_
  CHECK: [[POP:%[0-9]+]]:_(s64) = G_CTPOP [[AND1]]
  )";

  // Check
  EXPECT_TRUE(CheckMachineFunction(*MF, CheckStr)) << *MF;
}

// CTPOP widening.
TEST_F(AArch64GISelMITest, WidenBitCountingCTPOP1) {
  setUp();
  if (!TM)
    return;

  // Declare your legalization info
  DefineLegalizerInfo(A, {
      getActionDefinitionsBuilder(G_CTPOP).legalFor({{s16, s16}});
    });

  // Build
  // Trunc it to s8.
  LLT s8{LLT::scalar(8)};
  LLT s16{LLT::scalar(16)};
  auto MIBTrunc = B.buildTrunc(s8, Copies[0]);
  auto MIBCTPOP = B.buildInstr(TargetOpcode::G_CTPOP, {s16}, {MIBTrunc});
  AInfo Info(MF->getSubtarget());
  DummyGISelObserver Observer;
  LegalizerHelper Helper(*MF, Info, Observer, B);
  B.setInstr(*MIBCTPOP);
  EXPECT_EQ(LegalizerHelper::LegalizeResult::Legalized,
            Helper.widenScalar(*MIBCTPOP, 1, s16));

  auto CheckStr = R"(
  CHECK: [[TRUNC:%[0-9]+]]:_(s8) = G_TRUNC %0:_(s64)
  CHECK: [[ZEXT:%[0-9]+]]:_(s16) = G_ZEXT [[TRUNC]]:_(s8)
  CHECK: [[CTPOP:%[0-9]+]]:_(s16) = G_CTPOP [[ZEXT]]
  CHECK: [[COPY:%[0-9]+]]:_(s16) = COPY [[CTPOP]]:_(s16)
  )";

  EXPECT_TRUE(CheckMachineFunction(*MF, CheckStr)) << *MF;
}

// Test a strange case where the result is wider than the source
TEST_F(AArch64GISelMITest, WidenBitCountingCTPOP2) {
  setUp();
  if (!TM)
    return;

  // Declare your legalization info
  DefineLegalizerInfo(A, {
      getActionDefinitionsBuilder(G_CTPOP).legalFor({{s32, s16}});
    });

  // Build
  // Trunc it to s8.
  LLT s8{LLT::scalar(8)};
  LLT s16{LLT::scalar(16)};
  LLT s32{LLT::scalar(32)};
  auto MIBTrunc = B.buildTrunc(s8, Copies[0]);
  auto MIBCTPOP = B.buildInstr(TargetOpcode::G_CTPOP, {s32}, {MIBTrunc});
  AInfo Info(MF->getSubtarget());
  DummyGISelObserver Observer;
  LegalizerHelper Helper(*MF, Info, Observer, B);
  B.setInstr(*MIBCTPOP);
  EXPECT_EQ(LegalizerHelper::LegalizeResult::Legalized,
            Helper.widenScalar(*MIBCTPOP, 1, s16));

  auto CheckStr = R"(
  CHECK: [[TRUNC:%[0-9]+]]:_(s8) = G_TRUNC %0:_(s64)
  CHECK: [[ZEXT:%[0-9]+]]:_(s16) = G_ZEXT [[TRUNC]]:_(s8)
  CHECK: [[CTPOP:%[0-9]+]]:_(s16) = G_CTPOP [[ZEXT]]
  CHECK: [[COPY:%[0-9]+]]:_(s32) = G_ZEXT [[CTPOP]]:_(s16)
  )";

  EXPECT_TRUE(CheckMachineFunction(*MF, CheckStr)) << *MF;
}

// CTTZ_ZERO_UNDEF expansion in terms of CTTZ
TEST_F(AArch64GISelMITest, LowerBitCountingCTTZ3) {
  setUp();
  if (!TM)
    return;

  // Declare your legalization info
  DefineLegalizerInfo(A, {
    getActionDefinitionsBuilder(G_CTTZ).legalFor({{s64, s64}});
  });
  // Build
  auto MIBCTTZ = B.buildInstr(TargetOpcode::G_CTTZ_ZERO_UNDEF,
                              {LLT::scalar(64)}, {Copies[0]});
  AInfo Info(MF->getSubtarget());
  DummyGISelObserver Observer;
  LegalizerHelper Helper(*MF, Info, Observer, B);
  EXPECT_TRUE(Helper.lower(*MIBCTTZ, 0, LLT::scalar(64)) ==
              LegalizerHelper::LegalizeResult::Legalized);

  auto CheckStr = R"(
  CHECK: CTTZ
  )";

  // Check
  EXPECT_TRUE(CheckMachineFunction(*MF, CheckStr)) << *MF;
}

// CTLZ expansion in terms of CTLZ_ZERO_UNDEF
TEST_F(AArch64GISelMITest, LowerBitCountingCTLZ0) {
  setUp();
  if (!TM)
    return;

  // Declare your legalization info
  DefineLegalizerInfo(A, {
    getActionDefinitionsBuilder(G_CTLZ_ZERO_UNDEF).legalFor({{s64, s64}});
  });
  // Build
  auto MIBCTLZ =
      B.buildInstr(TargetOpcode::G_CTLZ, {LLT::scalar(64)}, {Copies[0]});
  AInfo Info(MF->getSubtarget());
  DummyGISelObserver Observer;
  LegalizerHelper Helper(*MF, Info, Observer, B);
  EXPECT_TRUE(Helper.lower(*MIBCTLZ, 0, LLT::scalar(64)) ==
              LegalizerHelper::LegalizeResult::Legalized);

  auto CheckStr = R"(
  CHECK: [[CZU:%[0-9]+]]:_(s64) = G_CTLZ_ZERO_UNDEF %0
  CHECK: [[ZERO:%[0-9]+]]:_(s64) = G_CONSTANT i64 0
  CHECK: [[CMP:%[0-9]+]]:_(s1) = G_ICMP intpred(eq), %0:_(s64), [[ZERO]]
  CHECK: [[SIXTY4:%[0-9]+]]:_(s64) = G_CONSTANT i64 64
  CHECK: [[SEL:%[0-9]+]]:_(s64) = G_SELECT [[CMP]]:_(s1), [[SIXTY4]]:_, [[CZU]]
  )";

  // Check
  EXPECT_TRUE(CheckMachineFunction(*MF, CheckStr)) << *MF;
}

// CTLZ expansion in terms of CTLZ_ZERO_UNDEF if the latter is a libcall
TEST_F(AArch64GISelMITest, LowerBitCountingCTLZLibcall) {
  setUp();
  if (!TM)
    return;

  // Declare your legalization info
  DefineLegalizerInfo(A, {
    getActionDefinitionsBuilder(G_CTLZ_ZERO_UNDEF).libcallFor({{s32, s64}});
  });
  // Build
  auto MIBCTLZ =
      B.buildInstr(TargetOpcode::G_CTLZ, {LLT::scalar(32)}, {Copies[0]});
  AInfo Info(MF->getSubtarget());
  DummyGISelObserver Observer;
  LegalizerHelper Helper(*MF, Info, Observer, B);
  EXPECT_EQ(LegalizerHelper::LegalizeResult::Legalized,
            Helper.lower(*MIBCTLZ, 0, LLT::scalar(32)));

  auto CheckStr = R"(
  CHECK: [[CZU:%[0-9]+]]:_(s32) = G_CTLZ_ZERO_UNDEF %0
  CHECK: [[ZERO:%[0-9]+]]:_(s64) = G_CONSTANT i64 0
  CHECK: [[CMP:%[0-9]+]]:_(s1) = G_ICMP intpred(eq), %0:_(s64), [[ZERO]]
  CHECK: [[THIRTY2:%[0-9]+]]:_(s32) = G_CONSTANT i32 64
  CHECK: [[SEL:%[0-9]+]]:_(s32) = G_SELECT [[CMP]]:_(s1), [[THIRTY2]]:_, [[CZU]]
  )";

  // Check
  EXPECT_TRUE(CheckMachineFunction(*MF, CheckStr)) << *MF;
}

// CTLZ expansion
TEST_F(AArch64GISelMITest, LowerBitCountingCTLZ1) {
  setUp();
  if (!TM)
    return;

  // Declare your legalization info
  DefineLegalizerInfo(A, {
    getActionDefinitionsBuilder(G_CTPOP).legalFor({{s8, s8}});
  });
  // Build
  // Trunc it to s8.
  LLT s8{LLT::scalar(8)};
  auto MIBTrunc = B.buildTrunc(s8, Copies[0]);
  auto MIBCTLZ = B.buildInstr(TargetOpcode::G_CTLZ, {s8}, {MIBTrunc});
  AInfo Info(MF->getSubtarget());
  DummyGISelObserver Observer;
  LegalizerHelper Helper(*MF, Info, Observer, B);
  EXPECT_TRUE(Helper.lower(*MIBCTLZ, 0, s8) ==
              LegalizerHelper::LegalizeResult::Legalized);

  auto CheckStr = R"(
  CHECK: [[Trunc:%[0-9]+]]:_(s8) = G_TRUNC
  CHECK: [[Cst1:%[0-9]+]]:_(s8) = G_CONSTANT i8 1
  CHECK: [[Sh1:%[0-9]+]]:_(s8) = G_LSHR [[Trunc]]:_, [[Cst1]]:_
  CHECK: [[Or1:%[0-9]+]]:_(s8) = G_OR [[Trunc]]:_, [[Sh1]]:_
  CHECK: [[Cst2:%[0-9]+]]:_(s8) = G_CONSTANT i8 2
  CHECK: [[Sh2:%[0-9]+]]:_(s8) = G_LSHR [[Or1]]:_, [[Cst2]]:_
  CHECK: [[Or2:%[0-9]+]]:_(s8) = G_OR [[Or1]]:_, [[Sh2]]:_
  CHECK: [[Cst4:%[0-9]+]]:_(s8) = G_CONSTANT i8 4
  CHECK: [[Sh4:%[0-9]+]]:_(s8) = G_LSHR [[Or2]]:_, [[Cst4]]:_
  CHECK: [[Or4:%[0-9]+]]:_(s8) = G_OR [[Or2]]:_, [[Sh4]]:_
  CHECK: [[CTPOP:%[0-9]+]]:_(s8) = G_CTPOP [[Or4]]:_
  CHECK: [[Len:%[0-9]+]]:_(s8) = G_CONSTANT i8 8
  CHECK: [[Sub:%[0-9]+]]:_(s8) = G_SUB [[Len]]:_, [[CTPOP]]:_
  )";

  // Check
  EXPECT_TRUE(CheckMachineFunction(*MF, CheckStr)) << *MF;
}

// CTLZ widening.
TEST_F(AArch64GISelMITest, WidenBitCountingCTLZ) {
  setUp();
  if (!TM)
    return;

  // Declare your legalization info
  DefineLegalizerInfo(A, {
    getActionDefinitionsBuilder(G_CTLZ).legalFor({{s16, s16}});
  });
  // Build
  // Trunc it to s8.
  LLT s8{LLT::scalar(8)};
  LLT s16{LLT::scalar(16)};
  auto MIBTrunc = B.buildTrunc(s8, Copies[0]);
  auto MIBCTLZ = B.buildInstr(TargetOpcode::G_CTLZ, {s8}, {MIBTrunc});
  AInfo Info(MF->getSubtarget());
  DummyGISelObserver Observer;
  LegalizerHelper Helper(*MF, Info, Observer, B);
  EXPECT_TRUE(Helper.widenScalar(*MIBCTLZ, 1, s16) ==
              LegalizerHelper::LegalizeResult::Legalized);

  auto CheckStr = R"(
  CHECK: [[Trunc:%[0-9]+]]:_(s8) = G_TRUNC
  CHECK: [[Zext:%[0-9]+]]:_(s16) = G_ZEXT [[Trunc]]
  CHECK: [[Ctlz:%[0-9]+]]:_(s16) = G_CTLZ [[Zext]]
  CHECK: [[Cst8:%[0-9]+]]:_(s16) = G_CONSTANT i16 8
  CHECK: [[Sub:%[0-9]+]]:_(s16) = G_SUB [[Ctlz]]:_, [[Cst8]]:_
  CHECK: [[Trunc:%[0-9]+]]:_(s8) = G_TRUNC [[Sub]]
  )";

  // Check
  EXPECT_TRUE(CheckMachineFunction(*MF, CheckStr)) << *MF;
}

// CTLZ_ZERO_UNDEF widening.
TEST_F(AArch64GISelMITest, WidenBitCountingCTLZZeroUndef) {
  setUp();
  if (!TM)
    return;

  // Declare your legalization info
  DefineLegalizerInfo(A, {
    getActionDefinitionsBuilder(G_CTLZ_ZERO_UNDEF).legalFor({{s16, s16}});
  });
  // Build
  // Trunc it to s8.
  LLT s8{LLT::scalar(8)};
  LLT s16{LLT::scalar(16)};
  auto MIBTrunc = B.buildTrunc(s8, Copies[0]);
  auto MIBCTLZ_ZU =
      B.buildInstr(TargetOpcode::G_CTLZ_ZERO_UNDEF, {s8}, {MIBTrunc});
  AInfo Info(MF->getSubtarget());
  DummyGISelObserver Observer;
  LegalizerHelper Helper(*MF, Info, Observer, B);
  EXPECT_TRUE(Helper.widenScalar(*MIBCTLZ_ZU, 1, s16) ==
              LegalizerHelper::LegalizeResult::Legalized);

  auto CheckStr = R"(
  CHECK: [[Trunc:%[0-9]+]]:_(s8) = G_TRUNC
  CHECK: [[Zext:%[0-9]+]]:_(s16) = G_ZEXT [[Trunc]]
  CHECK: [[CtlzZu:%[0-9]+]]:_(s16) = G_CTLZ_ZERO_UNDEF [[Zext]]
  CHECK: [[Cst8:%[0-9]+]]:_(s16) = G_CONSTANT i16 8
  CHECK: [[Sub:%[0-9]+]]:_(s16) = G_SUB [[CtlzZu]]:_, [[Cst8]]:_
  CHECK: [[Trunc:%[0-9]+]]:_(s8) = G_TRUNC [[Sub]]
  )";

  // Check
  EXPECT_TRUE(CheckMachineFunction(*MF, CheckStr)) << *MF;
}

// CTPOP widening.
TEST_F(AArch64GISelMITest, WidenBitCountingCTPOP) {
  setUp();
  if (!TM)
    return;

  // Declare your legalization info
  DefineLegalizerInfo(A, {
    getActionDefinitionsBuilder(G_CTPOP).legalFor({{s16, s16}});
  });
  // Build
  // Trunc it to s8.
  LLT s8{LLT::scalar(8)};
  LLT s16{LLT::scalar(16)};
  auto MIBTrunc = B.buildTrunc(s8, Copies[0]);
  auto MIBCTPOP = B.buildInstr(TargetOpcode::G_CTPOP, {s8}, {MIBTrunc});
  AInfo Info(MF->getSubtarget());
  DummyGISelObserver Observer;
  LegalizerHelper Helper(*MF, Info, Observer, B);
  EXPECT_TRUE(Helper.widenScalar(*MIBCTPOP, 1, s16) ==
              LegalizerHelper::LegalizeResult::Legalized);

  auto CheckStr = R"(
  CHECK: [[Trunc:%[0-9]+]]:_(s8) = G_TRUNC
  CHECK: [[Zext:%[0-9]+]]:_(s16) = G_ZEXT [[Trunc]]
  CHECK: [[Ctpop:%[0-9]+]]:_(s16) = G_CTPOP [[Zext]]
  CHECK: [[Trunc:%[0-9]+]]:_(s8) = G_TRUNC [[Ctpop]]
  )";

  // Check
  EXPECT_TRUE(CheckMachineFunction(*MF, CheckStr)) << *MF;
}

// CTTZ_ZERO_UNDEF widening.
TEST_F(AArch64GISelMITest, WidenBitCountingCTTZ_ZERO_UNDEF) {
  setUp();
  if (!TM)
    return;

  // Declare your legalization info
  DefineLegalizerInfo(A, {
    getActionDefinitionsBuilder(G_CTTZ_ZERO_UNDEF).legalFor({{s16, s16}});
  });
  // Build
  // Trunc it to s8.
  LLT s8{LLT::scalar(8)};
  LLT s16{LLT::scalar(16)};
  auto MIBTrunc = B.buildTrunc(s8, Copies[0]);
  auto MIBCTTZ_ZERO_UNDEF =
      B.buildInstr(TargetOpcode::G_CTTZ_ZERO_UNDEF, {s8}, {MIBTrunc});
  AInfo Info(MF->getSubtarget());
  DummyGISelObserver Observer;
  LegalizerHelper Helper(*MF, Info, Observer, B);
  EXPECT_TRUE(Helper.widenScalar(*MIBCTTZ_ZERO_UNDEF, 1, s16) ==
              LegalizerHelper::LegalizeResult::Legalized);

  auto CheckStr = R"(
  CHECK: [[Trunc:%[0-9]+]]:_(s8) = G_TRUNC
  CHECK: [[AnyExt:%[0-9]+]]:_(s16) = G_ANYEXT [[Trunc]]
  CHECK: [[CttzZu:%[0-9]+]]:_(s16) = G_CTTZ_ZERO_UNDEF [[AnyExt]]
  CHECK: [[Trunc:%[0-9]+]]:_(s8) = G_TRUNC [[CttzZu]]
  )";

  // Check
  EXPECT_TRUE(CheckMachineFunction(*MF, CheckStr)) << *MF;
}

// CTTZ widening.
TEST_F(AArch64GISelMITest, WidenBitCountingCTTZ) {
  setUp();
  if (!TM)
    return;

  // Declare your legalization info
  DefineLegalizerInfo(A, {
    getActionDefinitionsBuilder(G_CTTZ).legalFor({{s16, s16}});
  });
  // Build
  // Trunc it to s8.
  LLT s8{LLT::scalar(8)};
  LLT s16{LLT::scalar(16)};
  auto MIBTrunc = B.buildTrunc(s8, Copies[0]);
  auto MIBCTTZ = B.buildInstr(TargetOpcode::G_CTTZ, {s8}, {MIBTrunc});
  AInfo Info(MF->getSubtarget());
  DummyGISelObserver Observer;
  LegalizerHelper Helper(*MF, Info, Observer, B);
  EXPECT_TRUE(Helper.widenScalar(*MIBCTTZ, 1, s16) ==
              LegalizerHelper::LegalizeResult::Legalized);

  auto CheckStr = R"(
  CHECK: [[Trunc:%[0-9]+]]:_(s8) = G_TRUNC
  CHECK: [[AnyExt:%[0-9]+]]:_(s16) = G_ANYEXT [[Trunc]]
  CHECK: [[Cst:%[0-9]+]]:_(s16) = G_CONSTANT i16 256
  CHECK: [[Or:%[0-9]+]]:_(s16) = G_OR [[AnyExt]]:_, [[Cst]]
  CHECK: [[Cttz:%[0-9]+]]:_(s16) = G_CTTZ_ZERO_UNDEF [[Or]]
  CHECK: [[Trunc:%[0-9]+]]:_(s8) = G_TRUNC [[Cttz]]
  )";

  // Check
  EXPECT_TRUE(CheckMachineFunction(*MF, CheckStr)) << *MF;
}
// UADDO widening.
TEST_F(AArch64GISelMITest, WidenUADDO) {
  setUp();
  if (!TM)
    return;

  // Declare your legalization info
  DefineLegalizerInfo(A, {
    getActionDefinitionsBuilder(G_ADD).legalFor({{s16, s16}});
  });
  // Build
  // Trunc it to s8.
  LLT s8{LLT::scalar(8)};
  LLT s16{LLT::scalar(16)};
  auto MIBTrunc = B.buildTrunc(s8, Copies[0]);
  unsigned CarryReg = MRI->createGenericVirtualRegister(LLT::scalar(1));
  auto MIBUAddO =
      B.buildInstr(TargetOpcode::G_UADDO, {s8, CarryReg}, {MIBTrunc, MIBTrunc});
  AInfo Info(MF->getSubtarget());
  DummyGISelObserver Observer;
  LegalizerHelper Helper(*MF, Info, Observer, B);
  EXPECT_TRUE(Helper.widenScalar(*MIBUAddO, 0, s16) ==
              LegalizerHelper::LegalizeResult::Legalized);

  auto CheckStr = R"(
  CHECK: [[Trunc:%[0-9]+]]:_(s8) = G_TRUNC
  CHECK: [[LHS:%[0-9]+]]:_(s16) = G_ZEXT [[Trunc]]
  CHECK: [[RHS:%[0-9]+]]:_(s16) = G_ZEXT [[Trunc]]
  CHECK: [[ADD:%[0-9]+]]:_(s16) = G_ADD [[LHS]]:_, [[RHS]]:_
  CHECK: [[TRUNC1:%[0-9]+]]:_(s8) = G_TRUNC [[ADD]]
  CHECK: [[ZEXT:%[0-9]+]]:_(s16) = G_ZEXT [[TRUNC1]]
  CHECK: G_ICMP intpred(ne), [[ADD]]:_(s16), [[ZEXT]]:_
  CHECK: G_TRUNC [[ADD]]
  )";

  // Check
  EXPECT_TRUE(CheckMachineFunction(*MF, CheckStr)) << *MF;
}

// USUBO widening.
TEST_F(AArch64GISelMITest, WidenUSUBO) {
  setUp();
  if (!TM)
    return;

  // Declare your legalization info
  DefineLegalizerInfo(A, {
    getActionDefinitionsBuilder(G_SUB).legalFor({{s16, s16}});
  });
  // Build
  // Trunc it to s8.
  LLT s8{LLT::scalar(8)};
  LLT s16{LLT::scalar(16)};
  auto MIBTrunc = B.buildTrunc(s8, Copies[0]);
  unsigned CarryReg = MRI->createGenericVirtualRegister(LLT::scalar(1));
  auto MIBUSUBO =
      B.buildInstr(TargetOpcode::G_USUBO, {s8, CarryReg}, {MIBTrunc, MIBTrunc});
  AInfo Info(MF->getSubtarget());
  DummyGISelObserver Observer;
  LegalizerHelper Helper(*MF, Info, Observer, B);
  EXPECT_TRUE(Helper.widenScalar(*MIBUSUBO, 0, s16) ==
              LegalizerHelper::LegalizeResult::Legalized);

  auto CheckStr = R"(
  CHECK: [[Trunc:%[0-9]+]]:_(s8) = G_TRUNC
  CHECK: [[LHS:%[0-9]+]]:_(s16) = G_ZEXT [[Trunc]]
  CHECK: [[RHS:%[0-9]+]]:_(s16) = G_ZEXT [[Trunc]]
  CHECK: [[SUB:%[0-9]+]]:_(s16) = G_SUB [[LHS]]:_, [[RHS]]:_
  CHECK: [[TRUNC1:%[0-9]+]]:_(s8) = G_TRUNC [[SUB]]
  CHECK: [[ZEXT:%[0-9]+]]:_(s16) = G_ZEXT [[TRUNC1]]
  CHECK: G_ICMP intpred(ne), [[SUB]]:_(s16), [[ZEXT]]:_
  CHECK: G_TRUNC [[SUB]]
  )";

  // Check
  EXPECT_TRUE(CheckMachineFunction(*MF, CheckStr)) << *MF;
}

// SADDO widening.
TEST_F(AArch64GISelMITest, WidenSADDO) {
  setUp();
  if (!TM)
    return;

  // Declare your legalization info
  DefineLegalizerInfo(A, {
    getActionDefinitionsBuilder(G_ADD).legalFor({{s16, s16}});
  });
  // Build
  // Trunc it to s8.
  LLT s8{LLT::scalar(8)};
  LLT s16{LLT::scalar(16)};
  auto MIBTrunc = B.buildTrunc(s8, Copies[0]);
  unsigned CarryReg = MRI->createGenericVirtualRegister(LLT::scalar(1));
  auto MIBSAddO =
      B.buildInstr(TargetOpcode::G_SADDO, {s8, CarryReg}, {MIBTrunc, MIBTrunc});
  AInfo Info(MF->getSubtarget());
  DummyGISelObserver Observer;
  LegalizerHelper Helper(*MF, Info, Observer, B);
  EXPECT_TRUE(Helper.widenScalar(*MIBSAddO, 0, s16) ==
              LegalizerHelper::LegalizeResult::Legalized);

  auto CheckStr = R"(
  CHECK: [[Trunc:%[0-9]+]]:_(s8) = G_TRUNC
  CHECK: [[LHS:%[0-9]+]]:_(s16) = G_SEXT [[Trunc]]
  CHECK: [[RHS:%[0-9]+]]:_(s16) = G_SEXT [[Trunc]]
  CHECK: [[ADD:%[0-9]+]]:_(s16) = G_ADD [[LHS]]:_, [[RHS]]:_
  CHECK: [[TRUNC1:%[0-9]+]]:_(s8) = G_TRUNC [[ADD]]
  CHECK: [[SEXT:%[0-9]+]]:_(s16) = G_SEXT [[TRUNC1]]
  CHECK: G_ICMP intpred(ne), [[ADD]]:_(s16), [[SEXT]]:_
  CHECK: G_TRUNC [[ADD]]
  )";

  // Check
  EXPECT_TRUE(CheckMachineFunction(*MF, CheckStr)) << *MF;
}

// SSUBO widening.
TEST_F(AArch64GISelMITest, WidenSSUBO) {
  setUp();
  if (!TM)
    return;

  // Declare your legalization info
  DefineLegalizerInfo(A, {
    getActionDefinitionsBuilder(G_SUB).legalFor({{s16, s16}});
  });
  // Build
  // Trunc it to s8.
  LLT s8{LLT::scalar(8)};
  LLT s16{LLT::scalar(16)};
  auto MIBTrunc = B.buildTrunc(s8, Copies[0]);
  unsigned CarryReg = MRI->createGenericVirtualRegister(LLT::scalar(1));
  auto MIBSSUBO =
      B.buildInstr(TargetOpcode::G_SSUBO, {s8, CarryReg}, {MIBTrunc, MIBTrunc});
  AInfo Info(MF->getSubtarget());
  DummyGISelObserver Observer;
  LegalizerHelper Helper(*MF, Info, Observer, B);
  EXPECT_TRUE(Helper.widenScalar(*MIBSSUBO, 0, s16) ==
              LegalizerHelper::LegalizeResult::Legalized);

  auto CheckStr = R"(
  CHECK: [[Trunc:%[0-9]+]]:_(s8) = G_TRUNC
  CHECK: [[LHS:%[0-9]+]]:_(s16) = G_SEXT [[Trunc]]
  CHECK: [[RHS:%[0-9]+]]:_(s16) = G_SEXT [[Trunc]]
  CHECK: [[SUB:%[0-9]+]]:_(s16) = G_SUB [[LHS]]:_, [[RHS]]:_
  CHECK: [[TRUNC1:%[0-9]+]]:_(s8) = G_TRUNC [[SUB]]
  CHECK: [[SEXT:%[0-9]+]]:_(s16) = G_SEXT [[TRUNC1]]
  CHECK: G_ICMP intpred(ne), [[SUB]]:_(s16), [[SEXT]]:_
  CHECK: G_TRUNC [[SUB]]
  )";

  // Check
  EXPECT_TRUE(CheckMachineFunction(*MF, CheckStr)) << *MF;
}

TEST_F(AArch64GISelMITest, WidenUADDE) {
  setUp();
  if (!TM)
    return;

  // Declare your legalization info
  DefineLegalizerInfo(A, {
    getActionDefinitionsBuilder(G_UADDE).legalFor({{s16, s16}});
  });
  // Build
  // Trunc it to s8.
  LLT s8{LLT::scalar(8)};
  LLT s16{LLT::scalar(16)};
  auto MIBTrunc = B.buildTrunc(s8, Copies[0]);
  auto CarryIn = B.buildUndef(LLT::scalar(1));
  Register CarryReg = MRI->createGenericVirtualRegister(LLT::scalar(1));
  auto MIBUAddO = B.buildInstr(TargetOpcode::G_UADDE, {s8, CarryReg},
                               {MIBTrunc, MIBTrunc, CarryIn});
  AInfo Info(MF->getSubtarget());
  DummyGISelObserver Observer;
  LegalizerHelper Helper(*MF, Info, Observer, B);
  EXPECT_TRUE(Helper.widenScalar(*MIBUAddO, 0, s16) ==
              LegalizerHelper::LegalizeResult::Legalized);

  const char *CheckStr = R"(
  CHECK: [[Trunc:%[0-9]+]]:_(s8) = G_TRUNC
  CHECK: [[Implicit:%[0-9]+]]:_(s1) = G_IMPLICIT_DEF
  CHECK: [[LHS:%[0-9]+]]:_(s16) = G_ZEXT [[Trunc]]
  CHECK: [[RHS:%[0-9]+]]:_(s16) = G_ZEXT [[Trunc]]
  CHECK: [[UADDE:%[0-9]+]]:_(s16), [[CARRY:%[0-9]+]]:_(s1) = G_UADDE [[LHS]]:_, [[RHS]]:_, [[Implicit]]:_
  CHECK: [[TRUNC1:%[0-9]+]]:_(s8) = G_TRUNC [[UADDE]]
  CHECK: [[ZEXT:%[0-9]+]]:_(s16) = G_ZEXT [[TRUNC1]]
  CHECK: G_ICMP intpred(ne), [[UADDE]]:_(s16), [[ZEXT]]:_
  CHECK: G_TRUNC [[UADDE]]
  )";

  // Check
  EXPECT_TRUE(CheckMachineFunction(*MF, CheckStr)) << *MF;
}

TEST_F(AArch64GISelMITest, WidenUSUBE) {
  setUp();
  if (!TM)
    return;

  // Declare your legalization info
  DefineLegalizerInfo(A, {
    getActionDefinitionsBuilder(G_USUBE).legalFor({{s16, s16}});
  });
  // Build
  // Trunc it to s8.
  LLT s8{LLT::scalar(8)};
  LLT s16{LLT::scalar(16)};
  auto MIBTrunc = B.buildTrunc(s8, Copies[0]);
  auto CarryIn = B.buildUndef(LLT::scalar(1));
  Register CarryReg = MRI->createGenericVirtualRegister(LLT::scalar(1));
  auto MIBUSUBE = B.buildInstr(TargetOpcode::G_USUBE, {s8, CarryReg},
                               {MIBTrunc, MIBTrunc, CarryIn});
  AInfo Info(MF->getSubtarget());
  DummyGISelObserver Observer;
  LegalizerHelper Helper(*MF, Info, Observer, B);
  EXPECT_TRUE(Helper.widenScalar(*MIBUSUBE, 0, s16) ==
              LegalizerHelper::LegalizeResult::Legalized);

  const char *CheckStr = R"(
  CHECK: [[Trunc:%[0-9]+]]:_(s8) = G_TRUNC
  CHECK: [[Implicit:%[0-9]+]]:_(s1) = G_IMPLICIT_DEF
  CHECK: [[LHS:%[0-9]+]]:_(s16) = G_ZEXT [[Trunc]]
  CHECK: [[RHS:%[0-9]+]]:_(s16) = G_ZEXT [[Trunc]]
  CHECK: [[USUBE:%[0-9]+]]:_(s16), [[CARRY:%[0-9]+]]:_(s1) = G_USUBE [[LHS]]:_, [[RHS]]:_, [[Implicit]]:_
  CHECK: [[TRUNC1:%[0-9]+]]:_(s8) = G_TRUNC [[USUBE]]
  CHECK: [[ZEXT:%[0-9]+]]:_(s16) = G_ZEXT [[TRUNC1]]
  CHECK: G_ICMP intpred(ne), [[USUBE]]:_(s16), [[ZEXT]]:_
  CHECK: G_TRUNC [[USUBE]]
  )";

  // Check
  EXPECT_TRUE(CheckMachineFunction(*MF, CheckStr)) << *MF;
}

TEST_F(AArch64GISelMITest, WidenSADDE) {
  setUp();
  if (!TM)
    return;

  // Declare your legalization info
  DefineLegalizerInfo(A, {
    getActionDefinitionsBuilder({G_SADDE, G_UADDE}).legalFor({{s16, s16}});
  });
  // Build
  // Trunc it to s8.
  LLT s8{LLT::scalar(8)};
  LLT s16{LLT::scalar(16)};
  auto MIBTrunc = B.buildTrunc(s8, Copies[0]);
  auto CarryIn = B.buildUndef(LLT::scalar(1));
  Register CarryReg = MRI->createGenericVirtualRegister(LLT::scalar(1));
  auto MIBUAddO = B.buildInstr(TargetOpcode::G_SADDE, {s8, CarryReg},
                               {MIBTrunc, MIBTrunc, CarryIn});
  AInfo Info(MF->getSubtarget());
  DummyGISelObserver Observer;
  LegalizerHelper Helper(*MF, Info, Observer, B);
  EXPECT_TRUE(Helper.widenScalar(*MIBUAddO, 0, s16) ==
              LegalizerHelper::LegalizeResult::Legalized);

  const char *CheckStr = R"(
  CHECK: [[Trunc:%[0-9]+]]:_(s8) = G_TRUNC
  CHECK: [[Implicit:%[0-9]+]]:_(s1) = G_IMPLICIT_DEF
  CHECK: [[LHS:%[0-9]+]]:_(s16) = G_SEXT [[Trunc]]
  CHECK: [[RHS:%[0-9]+]]:_(s16) = G_SEXT [[Trunc]]
  CHECK: [[SADDE:%[0-9]+]]:_(s16), [[CARRY:%[0-9]+]]:_(s1) = G_UADDE [[LHS]]:_, [[RHS]]:_, [[Implicit]]:_
  CHECK: [[TRUNC1:%[0-9]+]]:_(s8) = G_TRUNC [[SADDE]]
  CHECK: [[SEXT:%[0-9]+]]:_(s16) = G_SEXT [[TRUNC1]]
  CHECK: G_ICMP intpred(ne), [[SADDE]]:_(s16), [[SEXT]]:_
  CHECK: G_TRUNC [[SADDE]]
  )";

  // Check
  EXPECT_TRUE(CheckMachineFunction(*MF, CheckStr)) << *MF;
}

TEST_F(AArch64GISelMITest, WidenSSUBE) {
  setUp();
  if (!TM)
    return;

  // Declare your legalization info
  DefineLegalizerInfo(A, {
    getActionDefinitionsBuilder({G_SSUBE, G_USUBE}).legalFor({{s16, s16}});
  });
  // Build
  // Trunc it to s8.
  LLT s8{LLT::scalar(8)};
  LLT s16{LLT::scalar(16)};
  auto MIBTrunc = B.buildTrunc(s8, Copies[0]);
  auto CarryIn = B.buildUndef(LLT::scalar(1));
  Register CarryReg = MRI->createGenericVirtualRegister(LLT::scalar(1));
  auto MIBSSUBE = B.buildInstr(TargetOpcode::G_SSUBE, {s8, CarryReg},
                               {MIBTrunc, MIBTrunc, CarryIn});
  AInfo Info(MF->getSubtarget());
  DummyGISelObserver Observer;
  LegalizerHelper Helper(*MF, Info, Observer, B);
  EXPECT_TRUE(Helper.widenScalar(*MIBSSUBE, 0, s16) ==
              LegalizerHelper::LegalizeResult::Legalized);

  const char *CheckStr = R"(
  CHECK: [[Trunc:%[0-9]+]]:_(s8) = G_TRUNC
  CHECK: [[Implicit:%[0-9]+]]:_(s1) = G_IMPLICIT_DEF
  CHECK: [[LHS:%[0-9]+]]:_(s16) = G_SEXT [[Trunc]]
  CHECK: [[RHS:%[0-9]+]]:_(s16) = G_SEXT [[Trunc]]
  CHECK: [[SSUBE:%[0-9]+]]:_(s16), [[CARRY:%[0-9]+]]:_(s1) = G_USUBE [[LHS]]:_, [[RHS]]:_, [[Implicit]]:_
  CHECK: [[TRUNC1:%[0-9]+]]:_(s8) = G_TRUNC [[SSUBE]]
  CHECK: [[SEXT:%[0-9]+]]:_(s16) = G_SEXT [[TRUNC1]]
  CHECK: G_ICMP intpred(ne), [[SSUBE]]:_(s16), [[SEXT]]:_
  CHECK: G_TRUNC [[SSUBE]]
  )";

  // Check
  EXPECT_TRUE(CheckMachineFunction(*MF, CheckStr)) << *MF;
}

TEST_F(AArch64GISelMITest, WidenUMULOCondition) {
  setUp();
  if (!TM)
    return;

  // Declare your legalization info
  DefineLegalizerInfo(A, {
    getActionDefinitionsBuilder(G_ADD).legalFor({{s16, s16}});
  });

  LLT s32 = LLT::scalar(32);
  LLT s64 = LLT::scalar(64);

  auto UMulo =
    B.buildInstr(TargetOpcode::G_UMULO, {s64, LLT::scalar(1)},
                 {Copies[0], Copies[1]});
  AInfo Info(MF->getSubtarget());
  DummyGISelObserver Observer;
  LegalizerHelper Helper(*MF, Info, Observer, B);

  B.setInstrAndDebugLoc(*UMulo);
  EXPECT_EQ(LegalizerHelper::LegalizeResult::Legalized,
            Helper.widenScalar(*UMulo, 1, s32));

  auto CheckStr = R"(
  CHECK: [[COPY0:%[0-9]+]]:_(s64) = COPY
  CHECK: [[COPY1:%[0-9]+]]:_(s64) = COPY
  CHECK: [[ADD:%[0-9]+]]:_(s64), [[OVERFLOW:%[0-9]+]]:_(s32) = G_UMULO [[COPY0]]:_, [[COPY1]]:_
  CHECK: {{[0-9]+}}:_(s1) = G_TRUNC [[OVERFLOW]]
  )";

  // Check
  EXPECT_TRUE(CheckMachineFunction(*MF, CheckStr)) << *MF;
}

TEST_F(AArch64GISelMITest, NarrowUADDO) {
  setUp();
  if (!TM)
    return;

  LLT S1 = LLT::scalar(1);
  LLT S32 = LLT::scalar(32);
  LLT S96 = LLT::scalar(96);
  DefineLegalizerInfo(A, {
    getActionDefinitionsBuilder({G_UADDO, G_UADDE})
        .legalFor({{LLT::scalar(32), LLT::scalar(1)}});
  });

  auto Op0 = B.buildUndef(S96);
  auto Op1 = B.buildUndef(S96);
  auto UADDO = B.buildUAddo(S96, S1, Op0, Op1);

  AInfo Info(MF->getSubtarget());
  DummyGISelObserver Observer;
  LegalizerHelper Helper(*MF, Info, Observer, B);
  EXPECT_EQ(LegalizerHelper::LegalizeResult::Legalized,
            Helper.narrowScalar(*UADDO, 0, S32));

  const char *CheckStr = R"(
  CHECK: [[IMP_DEF0:%[0-9]+]]:_(s96) = G_IMPLICIT_DEF
  CHECK: [[IMP_DEF1:%[0-9]+]]:_(s96) = G_IMPLICIT_DEF
  CHECK: [[OP0_0:%[0-9]+]]:_(s32), [[OP0_1:%[0-9]+]]:_(s32), [[OP0_2:%[0-9]+]]:_(s32) = G_UNMERGE_VALUES [[IMP_DEF0]]
  CHECK: [[OP1_0:%[0-9]+]]:_(s32), [[OP1_1:%[0-9]+]]:_(s32), [[OP1_2:%[0-9]+]]:_(s32) = G_UNMERGE_VALUES [[IMP_DEF1]]
  CHECK: [[UADDO0:%[0-9]+]]:_(s32), [[CARRY0:%[0-9]+]]:_(s1) = G_UADDO [[OP0_0]]:_, [[OP1_0]]:_
  CHECK: [[UADDO1:%[0-9]+]]:_(s32), [[CARRY1:%[0-9]+]]:_(s1) = G_UADDE [[OP0_1]]:_, [[OP1_1]]:_, [[CARRY0]]:_
  CHECK: [[UADDO2:%[0-9]+]]:_(s32), [[CARRY2:%[0-9]+]]:_(s1) = G_UADDE [[OP0_2]]:_, [[OP1_2]]:_, [[CARRY1]]:_
  CHECK: [[UADDO:%[0-9]+]]:_(s96) = G_MERGE_VALUES [[UADDO0]]:_(s32), [[UADDO1]]:_(s32), [[UADDO2]]:_(s32)
  )";

  EXPECT_TRUE(CheckMachineFunction(*MF, CheckStr)) << *MF;
}

TEST_F(AArch64GISelMITest, NarrowUSUBO) {
  setUp();
  if (!TM)
    return;

  LLT S1 = LLT::scalar(1);
  LLT S32 = LLT::scalar(32);
  LLT S96 = LLT::scalar(96);
  DefineLegalizerInfo(A, {
    getActionDefinitionsBuilder({G_USUBO, G_USUBE})
        .legalFor({{LLT::scalar(32), LLT::scalar(1)}});
  });

  auto Op0 = B.buildUndef(S96);
  auto Op1 = B.buildUndef(S96);
  auto USUBO = B.buildUSubo(S96, S1, Op0, Op1);

  AInfo Info(MF->getSubtarget());
  DummyGISelObserver Observer;
  LegalizerHelper Helper(*MF, Info, Observer, B);
  EXPECT_EQ(LegalizerHelper::LegalizeResult::Legalized,
            Helper.narrowScalar(*USUBO, 0, S32));

  const char *CheckStr = R"(
  CHECK: [[IMP_DEF0:%[0-9]+]]:_(s96) = G_IMPLICIT_DEF
  CHECK: [[IMP_DEF1:%[0-9]+]]:_(s96) = G_IMPLICIT_DEF
  CHECK: [[OP0_0:%[0-9]+]]:_(s32), [[OP0_1:%[0-9]+]]:_(s32), [[OP0_2:%[0-9]+]]:_(s32) = G_UNMERGE_VALUES [[IMP_DEF0]]
  CHECK: [[OP1_0:%[0-9]+]]:_(s32), [[OP1_1:%[0-9]+]]:_(s32), [[OP1_2:%[0-9]+]]:_(s32) = G_UNMERGE_VALUES [[IMP_DEF1]]
  CHECK: [[USUBO0:%[0-9]+]]:_(s32), [[CARRY0:%[0-9]+]]:_(s1) = G_USUBO [[OP0_0]]:_, [[OP1_0]]:_
  CHECK: [[USUBO1:%[0-9]+]]:_(s32), [[CARRY1:%[0-9]+]]:_(s1) = G_USUBE [[OP0_1]]:_, [[OP1_1]]:_, [[CARRY0]]:_
  CHECK: [[USUBO2:%[0-9]+]]:_(s32), [[CARRY2:%[0-9]+]]:_(s1) = G_USUBE [[OP0_2]]:_, [[OP1_2]]:_, [[CARRY1]]:_
  CHECK: [[USUBO:%[0-9]+]]:_(s96) = G_MERGE_VALUES [[USUBO0]]:_(s32), [[USUBO1]]:_(s32), [[USUBO2]]:_(s32)
  )";

  EXPECT_TRUE(CheckMachineFunction(*MF, CheckStr)) << *MF;
}

TEST_F(AArch64GISelMITest, NarrowSADDO) {
  setUp();
  if (!TM)
    return;

  LLT S1 = LLT::scalar(1);
  LLT S32 = LLT::scalar(32);
  LLT S96 = LLT::scalar(96);
  DefineLegalizerInfo(A, {
    getActionDefinitionsBuilder({G_UADDO, G_UADDE, G_SADDE})
        .legalFor({{LLT::scalar(32), LLT::scalar(1)}});
  });

  auto Op0 = B.buildUndef(S96);
  auto Op1 = B.buildUndef(S96);
  auto SADDO = B.buildSAddo(S96, S1, Op0, Op1);

  AInfo Info(MF->getSubtarget());
  DummyGISelObserver Observer;
  LegalizerHelper Helper(*MF, Info, Observer, B);
  EXPECT_EQ(LegalizerHelper::LegalizeResult::Legalized,
            Helper.narrowScalar(*SADDO, 0, S32));

  const char *CheckStr = R"(
  CHECK: [[IMP_DEF0:%[0-9]+]]:_(s96) = G_IMPLICIT_DEF
  CHECK: [[IMP_DEF1:%[0-9]+]]:_(s96) = G_IMPLICIT_DEF
  CHECK: [[OP0_0:%[0-9]+]]:_(s32), [[OP0_1:%[0-9]+]]:_(s32), [[OP0_2:%[0-9]+]]:_(s32) = G_UNMERGE_VALUES [[IMP_DEF0]]
  CHECK: [[OP1_0:%[0-9]+]]:_(s32), [[OP1_1:%[0-9]+]]:_(s32), [[OP1_2:%[0-9]+]]:_(s32) = G_UNMERGE_VALUES [[IMP_DEF1]]
  CHECK: [[SADDO0:%[0-9]+]]:_(s32), [[CARRY0:%[0-9]+]]:_(s1) = G_UADDO [[OP0_0]]:_, [[OP1_0]]:_
  CHECK: [[SADDO1:%[0-9]+]]:_(s32), [[CARRY1:%[0-9]+]]:_(s1) = G_UADDE [[OP0_1]]:_, [[OP1_1]]:_, [[CARRY0]]:_
  CHECK: [[SADDO2:%[0-9]+]]:_(s32), [[CARRY2:%[0-9]+]]:_(s1) = G_SADDE [[OP0_2]]:_, [[OP1_2]]:_, [[CARRY1]]:_
  CHECK: [[SADDO:%[0-9]+]]:_(s96) = G_MERGE_VALUES [[SADDO0]]:_(s32), [[SADDO1]]:_(s32), [[SADDO2]]:_(s32)
  )";

  EXPECT_TRUE(CheckMachineFunction(*MF, CheckStr)) << *MF;
}

TEST_F(AArch64GISelMITest, NarrowSSUBO) {
  setUp();
  if (!TM)
    return;

  LLT S1 = LLT::scalar(1);
  LLT S32 = LLT::scalar(32);
  LLT S96 = LLT::scalar(96);
  DefineLegalizerInfo(A, {
    getActionDefinitionsBuilder({G_USUBO, G_USUBE, G_SSUBE})
        .legalFor({{LLT::scalar(32), LLT::scalar(1)}});
  });

  auto Op0 = B.buildUndef(S96);
  auto Op1 = B.buildUndef(S96);
  auto SSUBO = B.buildSSubo(S96, S1, Op0, Op1);

  AInfo Info(MF->getSubtarget());
  DummyGISelObserver Observer;
  LegalizerHelper Helper(*MF, Info, Observer, B);
  EXPECT_EQ(LegalizerHelper::LegalizeResult::Legalized,
            Helper.narrowScalar(*SSUBO, 0, S32));

  const char *CheckStr = R"(
  CHECK: [[IMP_DEF0:%[0-9]+]]:_(s96) = G_IMPLICIT_DEF
  CHECK: [[IMP_DEF1:%[0-9]+]]:_(s96) = G_IMPLICIT_DEF
  CHECK: [[OP0_0:%[0-9]+]]:_(s32), [[OP0_1:%[0-9]+]]:_(s32), [[OP0_2:%[0-9]+]]:_(s32) = G_UNMERGE_VALUES [[IMP_DEF0]]
  CHECK: [[OP1_0:%[0-9]+]]:_(s32), [[OP1_1:%[0-9]+]]:_(s32), [[OP1_2:%[0-9]+]]:_(s32) = G_UNMERGE_VALUES [[IMP_DEF1]]
  CHECK: [[SSUBO0:%[0-9]+]]:_(s32), [[CARRY0:%[0-9]+]]:_(s1) = G_USUBO [[OP0_0]]:_, [[OP1_0]]:_
  CHECK: [[SSUBO1:%[0-9]+]]:_(s32), [[CARRY1:%[0-9]+]]:_(s1) = G_USUBE [[OP0_1]]:_, [[OP1_1]]:_, [[CARRY0]]:_
  CHECK: [[SSUBO2:%[0-9]+]]:_(s32), [[CARRY2:%[0-9]+]]:_(s1) = G_SSUBE [[OP0_2]]:_, [[OP1_2]]:_, [[CARRY1]]:_
  CHECK: [[SSUBO:%[0-9]+]]:_(s96) = G_MERGE_VALUES [[SSUBO0]]:_(s32), [[SSUBO1]]:_(s32), [[SSUBO2]]:_(s32)
  )";

  EXPECT_TRUE(CheckMachineFunction(*MF, CheckStr)) << *MF;
}

TEST_F(AArch64GISelMITest, NarrowUADDE) {
  setUp();
  if (!TM)
    return;

  LLT S1 = LLT::scalar(1);
  LLT S32 = LLT::scalar(32);
  LLT S96 = LLT::scalar(96);
  DefineLegalizerInfo(A, {
    getActionDefinitionsBuilder(G_UADDE).legalFor(
        {{LLT::scalar(32), LLT::scalar(1)}});
  });

  auto Op0 = B.buildUndef(S96);
  auto Op1 = B.buildUndef(S96);
  auto Op2 = B.buildUndef(S1);
  auto UADDE = B.buildUAdde(S96, S1, Op0, Op1, Op2);

  AInfo Info(MF->getSubtarget());
  DummyGISelObserver Observer;
  LegalizerHelper Helper(*MF, Info, Observer, B);
  EXPECT_EQ(LegalizerHelper::LegalizeResult::Legalized,
            Helper.narrowScalar(*UADDE, 0, S32));

  const char *CheckStr = R"(
  CHECK: [[IMP_DEF0:%[0-9]+]]:_(s96) = G_IMPLICIT_DEF
  CHECK: [[IMP_DEF1:%[0-9]+]]:_(s96) = G_IMPLICIT_DEF
  CHECK: [[IMP_DEF2:%[0-9]+]]:_(s1) = G_IMPLICIT_DEF
  CHECK: [[OP0_0:%[0-9]+]]:_(s32), [[OP0_1:%[0-9]+]]:_(s32), [[OP0_2:%[0-9]+]]:_(s32) = G_UNMERGE_VALUES [[IMP_DEF0]]
  CHECK: [[OP1_0:%[0-9]+]]:_(s32), [[OP1_1:%[0-9]+]]:_(s32), [[OP1_2:%[0-9]+]]:_(s32) = G_UNMERGE_VALUES [[IMP_DEF1]]
  CHECK: [[UADDE0:%[0-9]+]]:_(s32), [[CARRY0:%[0-9]+]]:_(s1) = G_UADDE [[OP0_0]]:_, [[OP1_0]]:_, [[IMP_DEF2]]:_
  CHECK: [[UADDE1:%[0-9]+]]:_(s32), [[CARRY1:%[0-9]+]]:_(s1) = G_UADDE [[OP0_1]]:_, [[OP1_1]]:_, [[CARRY0]]:_
  CHECK: [[UADDE2:%[0-9]+]]:_(s32), [[CARRY2:%[0-9]+]]:_(s1) = G_UADDE [[OP0_2]]:_, [[OP1_2]]:_, [[CARRY1]]:_
  CHECK: [[UADDE:%[0-9]+]]:_(s96) = G_MERGE_VALUES [[UADDE0]]:_(s32), [[UADDE1]]:_(s32), [[UADDE2]]:_(s32)
  )";

  EXPECT_TRUE(CheckMachineFunction(*MF, CheckStr)) << *MF;
}

TEST_F(AArch64GISelMITest, NarrowUSUBE) {
  setUp();
  if (!TM)
    return;

  LLT S1 = LLT::scalar(1);
  LLT S32 = LLT::scalar(32);
  LLT S96 = LLT::scalar(96);
  DefineLegalizerInfo(A, {
    getActionDefinitionsBuilder(G_USUBE).legalFor(
        {{LLT::scalar(32), LLT::scalar(1)}});
  });

  auto Op0 = B.buildUndef(S96);
  auto Op1 = B.buildUndef(S96);
  auto Op2 = B.buildUndef(S1);
  auto USUBE = B.buildUSube(S96, S1, Op0, Op1, Op2);

  AInfo Info(MF->getSubtarget());
  DummyGISelObserver Observer;
  LegalizerHelper Helper(*MF, Info, Observer, B);
  EXPECT_EQ(LegalizerHelper::LegalizeResult::Legalized,
            Helper.narrowScalar(*USUBE, 0, S32));

  const char *CheckStr = R"(
  CHECK: [[IMP_DEF0:%[0-9]+]]:_(s96) = G_IMPLICIT_DEF
  CHECK: [[IMP_DEF1:%[0-9]+]]:_(s96) = G_IMPLICIT_DEF
  CHECK: [[IMP_DEF2:%[0-9]+]]:_(s1) = G_IMPLICIT_DEF
  CHECK: [[OP0_0:%[0-9]+]]:_(s32), [[OP0_1:%[0-9]+]]:_(s32), [[OP0_2:%[0-9]+]]:_(s32) = G_UNMERGE_VALUES [[IMP_DEF0]]
  CHECK: [[OP1_0:%[0-9]+]]:_(s32), [[OP1_1:%[0-9]+]]:_(s32), [[OP1_2:%[0-9]+]]:_(s32) = G_UNMERGE_VALUES [[IMP_DEF1]]
  CHECK: [[USUBE0:%[0-9]+]]:_(s32), [[CARRY0:%[0-9]+]]:_(s1) = G_USUBE [[OP0_0]]:_, [[OP1_0]]:_, [[IMP_DEF2]]:_
  CHECK: [[USUBE1:%[0-9]+]]:_(s32), [[CARRY1:%[0-9]+]]:_(s1) = G_USUBE [[OP0_1]]:_, [[OP1_1]]:_, [[CARRY0]]:_
  CHECK: [[USUBE2:%[0-9]+]]:_(s32), [[CARRY2:%[0-9]+]]:_(s1) = G_USUBE [[OP0_2]]:_, [[OP1_2]]:_, [[CARRY1]]:_
  CHECK: [[USUBE:%[0-9]+]]:_(s96) = G_MERGE_VALUES [[USUBE0]]:_(s32), [[USUBE1]]:_(s32), [[USUBE2]]:_(s32)
  )";

  EXPECT_TRUE(CheckMachineFunction(*MF, CheckStr)) << *MF;
}

TEST_F(AArch64GISelMITest, NarrowSADDE) {
  setUp();
  if (!TM)
    return;

  LLT S1 = LLT::scalar(1);
  LLT S32 = LLT::scalar(32);
  LLT S96 = LLT::scalar(96);
  DefineLegalizerInfo(A, {
    getActionDefinitionsBuilder({G_SADDE, G_UADDE})
        .legalFor({{LLT::scalar(32), LLT::scalar(1)}});
  });

  auto Op0 = B.buildUndef(S96);
  auto Op1 = B.buildUndef(S96);
  auto Op2 = B.buildUndef(S1);
  auto SADDE = B.buildSAdde(S96, S1, Op0, Op1, Op2);

  AInfo Info(MF->getSubtarget());
  DummyGISelObserver Observer;
  LegalizerHelper Helper(*MF, Info, Observer, B);
  EXPECT_EQ(LegalizerHelper::LegalizeResult::Legalized,
            Helper.narrowScalar(*SADDE, 0, S32));

  const char *CheckStr = R"(
  CHECK: [[IMP_DEF0:%[0-9]+]]:_(s96) = G_IMPLICIT_DEF
  CHECK: [[IMP_DEF1:%[0-9]+]]:_(s96) = G_IMPLICIT_DEF
  CHECK: [[IMP_DEF2:%[0-9]+]]:_(s1) = G_IMPLICIT_DEF
  CHECK: [[OP0_0:%[0-9]+]]:_(s32), [[OP0_1:%[0-9]+]]:_(s32), [[OP0_2:%[0-9]+]]:_(s32) = G_UNMERGE_VALUES [[IMP_DEF0]]
  CHECK: [[OP1_0:%[0-9]+]]:_(s32), [[OP1_1:%[0-9]+]]:_(s32), [[OP1_2:%[0-9]+]]:_(s32) = G_UNMERGE_VALUES [[IMP_DEF1]]
  CHECK: [[SADDE0:%[0-9]+]]:_(s32), [[CARRY0:%[0-9]+]]:_(s1) = G_UADDE [[OP0_0]]:_, [[OP1_0]]:_, [[IMP_DEF2]]:_
  CHECK: [[SADDE1:%[0-9]+]]:_(s32), [[CARRY1:%[0-9]+]]:_(s1) = G_UADDE [[OP0_1]]:_, [[OP1_1]]:_, [[CARRY0]]:_
  CHECK: [[SADDE2:%[0-9]+]]:_(s32), [[CARRY2:%[0-9]+]]:_(s1) = G_SADDE [[OP0_2]]:_, [[OP1_2]]:_, [[CARRY1]]:_
  CHECK: [[SADDE:%[0-9]+]]:_(s96) = G_MERGE_VALUES [[SADDE0]]:_(s32), [[SADDE1]]:_(s32), [[SADDE2]]:_(s32)
  )";

  EXPECT_TRUE(CheckMachineFunction(*MF, CheckStr)) << *MF;
}

TEST_F(AArch64GISelMITest, NarrowSSUBE) {
  setUp();
  if (!TM)
    return;

  LLT S1 = LLT::scalar(1);
  LLT S32 = LLT::scalar(32);
  LLT S96 = LLT::scalar(96);
  DefineLegalizerInfo(A, {
    getActionDefinitionsBuilder({G_SSUBE, G_USUBE})
        .legalFor({{LLT::scalar(32), LLT::scalar(1)}});
  });

  auto Op0 = B.buildUndef(S96);
  auto Op1 = B.buildUndef(S96);
  auto Op2 = B.buildUndef(S1);
  auto SSUBE = B.buildSSube(S96, S1, Op0, Op1, Op2);

  AInfo Info(MF->getSubtarget());
  DummyGISelObserver Observer;
  LegalizerHelper Helper(*MF, Info, Observer, B);
  EXPECT_EQ(LegalizerHelper::LegalizeResult::Legalized,
            Helper.narrowScalar(*SSUBE, 0, S32));

  const char *CheckStr = R"(
  CHECK: [[IMP_DEF0:%[0-9]+]]:_(s96) = G_IMPLICIT_DEF
  CHECK: [[IMP_DEF1:%[0-9]+]]:_(s96) = G_IMPLICIT_DEF
  CHECK: [[IMP_DEF2:%[0-9]+]]:_(s1) = G_IMPLICIT_DEF
  CHECK: [[OP0_0:%[0-9]+]]:_(s32), [[OP0_1:%[0-9]+]]:_(s32), [[OP0_2:%[0-9]+]]:_(s32) = G_UNMERGE_VALUES [[IMP_DEF0]]
  CHECK: [[OP1_0:%[0-9]+]]:_(s32), [[OP1_1:%[0-9]+]]:_(s32), [[OP1_2:%[0-9]+]]:_(s32) = G_UNMERGE_VALUES [[IMP_DEF1]]
  CHECK: [[SSUBE0:%[0-9]+]]:_(s32), [[CARRY0:%[0-9]+]]:_(s1) = G_USUBE [[OP0_0]]:_, [[OP1_0]]:_, [[IMP_DEF2]]:_
  CHECK: [[SSUBE1:%[0-9]+]]:_(s32), [[CARRY1:%[0-9]+]]:_(s1) = G_USUBE [[OP0_1]]:_, [[OP1_1]]:_, [[CARRY0]]:_
  CHECK: [[SSUBE2:%[0-9]+]]:_(s32), [[CARRY2:%[0-9]+]]:_(s1) = G_SSUBE [[OP0_2]]:_, [[OP1_2]]:_, [[CARRY1]]:_
  CHECK: [[SSUBE:%[0-9]+]]:_(s96) = G_MERGE_VALUES [[SSUBE0]]:_(s32), [[SSUBE1]]:_(s32), [[SSUBE2]]:_(s32)
  )";

  EXPECT_TRUE(CheckMachineFunction(*MF, CheckStr)) << *MF;
}

TEST_F(AArch64GISelMITest, FewerElementsAnd) {
  setUp();
  if (!TM)
    return;

  const LLT V2S32 = LLT::fixed_vector(2, 32);
  const LLT V5S32 = LLT::fixed_vector(5, 32);

  // Declare your legalization info
  DefineLegalizerInfo(A, {
    getActionDefinitionsBuilder(G_AND)
      .legalFor({s32});
  });

  auto Op0 = B.buildUndef(V5S32);
  auto Op1 = B.buildUndef(V5S32);
  auto And = B.buildAnd(V5S32, Op0, Op1);

  AInfo Info(MF->getSubtarget());
  DummyGISelObserver Observer;
  LegalizerHelper Helper(*MF, Info, Observer, B);
  B.setInstr(*And);
  EXPECT_TRUE(Helper.fewerElementsVector(*And, 0, V2S32) ==
              LegalizerHelper::LegalizeResult::Legalized);

  auto CheckStr = R"(
  CHECK: [[IMP_DEF0:%[0-9]+]]:_(<5 x s32>) = G_IMPLICIT_DEF
  CHECK: [[IMP_DEF1:%[0-9]+]]:_(<5 x s32>) = G_IMPLICIT_DEF
  CHECK: [[VALUE0:%[0-9]+]]:_(s32), [[VALUE1:%[0-9]+]]:_(s32), [[VALUE2:%[0-9]+]]:_(s32), [[VALUE3:%[0-9]+]]:_(s32), [[VALUE4:%[0-9]+]]:_(s32) = G_UNMERGE_VALUES [[IMP_DEF0]]:_(<5 x s32>)
  CHECK: [[VECTOR0:%[0-9]+]]:_(<2 x s32>) = G_BUILD_VECTOR [[VALUE0]]:_(s32), [[VALUE1]]:_(s32)
  CHECK: [[VECTOR1:%[0-9]+]]:_(<2 x s32>) = G_BUILD_VECTOR [[VALUE2]]:_(s32), [[VALUE3]]:_(s32)
  CHECK: [[VALUE5:%[0-9]+]]:_(s32), [[VALUE6:%[0-9]+]]:_(s32), [[VALUE7:%[0-9]+]]:_(s32), [[VALUE8:%[0-9]+]]:_(s32), [[VALUE9:%[0-9]+]]:_(s32) = G_UNMERGE_VALUES [[IMP_DEF1]]:_(<5 x s32>)
  CHECK: [[VECTOR2:%[0-9]+]]:_(<2 x s32>) = G_BUILD_VECTOR [[VALUE5]]:_(s32), [[VALUE6]]:_(s32)
  CHECK: [[VECTOR3:%[0-9]+]]:_(<2 x s32>) = G_BUILD_VECTOR [[VALUE7]]:_(s32), [[VALUE8]]:_(s32)
  CHECK: [[AND0:%[0-9]+]]:_(<2 x s32>) = G_AND [[VECTOR0]]:_, [[VECTOR2]]:_
  CHECK: [[AND1:%[0-9]+]]:_(<2 x s32>) = G_AND [[VECTOR1]]:_, [[VECTOR3]]:_
  CHECK: [[AND2:%[0-9]+]]:_(s32) = G_AND [[VALUE4]]:_, [[VALUE9]]:_
  CHECK: [[AND0_E0:%[0-9]+]]:_(s32), [[AND0_E1:%[0-9]+]]:_(s32) = G_UNMERGE_VALUES [[AND0]]:_(<2 x s32>)
  CHECK: [[AND1_E0:%[0-9]+]]:_(s32), [[AND1_E1:%[0-9]+]]:_(s32) = G_UNMERGE_VALUES [[AND1]]:_(<2 x s32>)
  CHECK: [[RESULT:%[0-9]+]]:_(<5 x s32>) = G_BUILD_VECTOR [[AND0_E0]]:_(s32), [[AND0_E1]]:_(s32), [[AND1_E0]]:_(s32), [[AND1_E1]]:_(s32), [[AND2]]:_(s32)
  )";

  // Check
  EXPECT_TRUE(CheckMachineFunction(*MF, CheckStr)) << *MF;
}

TEST_F(AArch64GISelMITest, MoreElementsAnd) {
  setUp();
  if (!TM)
    return;

  LLT s32 = LLT::scalar(32);
  LLT v2s32 = LLT::fixed_vector(2, 32);
  LLT v6s32 = LLT::fixed_vector(6, 32);

  LegalizerInfo LI;
  LI.getActionDefinitionsBuilder(TargetOpcode::G_AND)
    .legalFor({v6s32})
    .clampMinNumElements(0, s32, 6);
  LI.getLegacyLegalizerInfo().computeTables();

  DummyGISelObserver Observer;
  LegalizerHelper Helper(*MF, LI, Observer, B);

  B.setInsertPt(*EntryMBB, EntryMBB->end());

  auto Val0 = B.buildBitcast(v2s32, Copies[0]);
  auto Val1 = B.buildBitcast(v2s32, Copies[1]);

  auto And = B.buildAnd(v2s32, Val0, Val1);

  B.setInstr(*And);
  EXPECT_EQ(LegalizerHelper::LegalizeResult::Legalized,
            Helper.moreElementsVector(*And, 0, v6s32));

  auto CheckStr = R"(
  CHECK: [[BITCAST0:%[0-9]+]]:_(<2 x s32>) = G_BITCAST
  CHECK: [[BITCAST1:%[0-9]+]]:_(<2 x s32>) = G_BITCAST

  CHECK: [[BITCAST0_E0:%[0-9]+]]:_(s32), [[BITCAST0_E1:%[0-9]+]]:_(s32) = G_UNMERGE_VALUES [[BITCAST0]]:_(<2 x s32>)
  CHECK: [[IMP_DEF0:%[0-9]+]]:_(s32) = G_IMPLICIT_DEF
  CHECK: [[BITCAST0_LARGE:%[0-9]+]]:_(<6 x s32>) = G_BUILD_VECTOR [[BITCAST0_E0]]:_(s32), [[BITCAST0_E1]]:_(s32), [[IMP_DEF0]]:_(s32), [[IMP_DEF0]]:_(s32), [[IMP_DEF0]]:_(s32), [[IMP_DEF0]]:_(s32)

  CHECK: [[BITCAST1_E0:%[0-9]+]]:_(s32), [[BITCAST1_E1:%[0-9]+]]:_(s32) = G_UNMERGE_VALUES [[BITCAST1]]:_(<2 x s32>)
  CHECK: [[IMP_DEF1:%[0-9]+]]:_(s32) = G_IMPLICIT_DEF
  CHECK: [[BITCAST1_LARGE:%[0-9]+]]:_(<6 x s32>) = G_BUILD_VECTOR [[BITCAST1_E0]]:_(s32), [[BITCAST1_E1]]:_(s32), [[IMP_DEF1]]:_(s32), [[IMP_DEF1]]:_(s32), [[IMP_DEF1]]:_(s32), [[IMP_DEF1]]:_(s32)

  CHECK: [[AND:%[0-9]+]]:_(<6 x s32>) = G_AND [[BITCAST0_LARGE]]:_, [[BITCAST1_LARGE]]:_

  CHECK: [[AND_E0:%[0-9]+]]:_(s32), [[AND_E1:%[0-9]+]]:_(s32), [[AND_E2:%[0-9]+]]:_(s32), [[AND_E3:%[0-9]+]]:_(s32), [[AND_E4:%[0-9]+]]:_(s32), [[AND_E5:%[0-9]+]]:_(s32) = G_UNMERGE_VALUES [[AND]]:_(<6 x s32>)
  CHECK: (<2 x s32>) = G_BUILD_VECTOR [[AND_E0]]:_(s32), [[AND_E1]]:_(s32)
  )";

  EXPECT_TRUE(CheckMachineFunction(*MF, CheckStr)) << *MF;
}

TEST_F(AArch64GISelMITest, FewerElementsPhi) {
  setUp();
  if (!TM)
    return;

  LLT s1 = LLT::scalar(1);
  LLT s32 = LLT::scalar(32);
  LLT s64 = LLT::scalar(64);
  LLT v2s32 = LLT::fixed_vector(2, 32);
  LLT v5s32 = LLT::fixed_vector(5, 32);

  LegalizerInfo LI;
  LI.getActionDefinitionsBuilder(TargetOpcode::G_PHI)
    .legalFor({v2s32})
    .clampMinNumElements(0, s32, 2);
  LI.getLegacyLegalizerInfo().computeTables();

  LLT PhiTy = v5s32;
  DummyGISelObserver Observer;
  LegalizerHelper Helper(*MF, LI, Observer, B);
  B.setMBB(*EntryMBB);

  MachineBasicBlock *MidMBB = MF->CreateMachineBasicBlock();
  MachineBasicBlock *EndMBB = MF->CreateMachineBasicBlock();
  MF->insert(MF->end(), MidMBB);
  MF->insert(MF->end(), EndMBB);

  EntryMBB->addSuccessor(MidMBB);
  EntryMBB->addSuccessor(EndMBB);
  MidMBB->addSuccessor(EndMBB);

  auto InitVal = B.buildUndef(PhiTy);
  auto InitOtherVal = B.buildConstant(s64, 999);

  auto ICmp = B.buildICmp(CmpInst::ICMP_EQ, s1, Copies[0], Copies[1]);
  B.buildBrCond(ICmp.getReg(0), *MidMBB);
  B.buildBr(*EndMBB);


  B.setMBB(*MidMBB);
  auto MidVal = B.buildUndef(PhiTy);
  auto MidOtherVal = B.buildConstant(s64, 345);
  B.buildBr(*EndMBB);

  B.setMBB(*EndMBB);
  auto Phi = B.buildInstr(TargetOpcode::G_PHI)
    .addDef(MRI->createGenericVirtualRegister(PhiTy))
    .addUse(InitVal.getReg(0))
    .addMBB(EntryMBB)
    .addUse(MidVal.getReg(0))
    .addMBB(MidMBB);

  // Insert another irrelevant phi to make sure the rebuild is inserted after
  // it.
  B.buildInstr(TargetOpcode::G_PHI)
    .addDef(MRI->createGenericVirtualRegister(s64))
    .addUse(InitOtherVal.getReg(0))
    .addMBB(EntryMBB)
    .addUse(MidOtherVal.getReg(0))
    .addMBB(MidMBB);

  // Add some use instruction after the phis.
  B.buildAnd(PhiTy, Phi.getReg(0), Phi.getReg(0));

  B.setInstr(*Phi);
  EXPECT_EQ(LegalizerHelper::LegalizeResult::Legalized,
            Helper.fewerElementsVector(*Phi, 0, v2s32));

  auto CheckStr = R"(
  CHECK: [[INITVAL:%[0-9]+]]:_(<5 x s32>) = G_IMPLICIT_DEF
  CHECK: [[INITVAL_E0:%[0-9]+]]:_(s32), [[INITVAL_E1:%[0-9]+]]:_(s32), [[INITVAL_E2:%[0-9]+]]:_(s32), [[INITVAL_E3:%[0-9]+]]:_(s32), [[INITVAL_E4:%[0-9]+]]:_(s32) = G_UNMERGE_VALUES [[INITVAL]]:_(<5 x s32>)
  CHECK: [[INITVAL_E01:%[0-9]+]]:_(<2 x s32>) = G_BUILD_VECTOR [[INITVAL_E0]]:_(s32), [[INITVAL_E1]]:_(s32)
  CHECK: [[INITVAL_E23:%[0-9]+]]:_(<2 x s32>) = G_BUILD_VECTOR [[INITVAL_E2]]:_(s32), [[INITVAL_E3]]:_(s32)
  CHECK: G_BRCOND

  CHECK: [[MIDVAL:%[0-9]+]]:_(<5 x s32>) = G_IMPLICIT_DEF
  CHECK: [[MIDVAL_E0:%[0-9]+]]:_(s32), [[MIDVAL_E1:%[0-9]+]]:_(s32), [[MIDVAL_E2:%[0-9]+]]:_(s32), [[MIDVAL_E3:%[0-9]+]]:_(s32), [[MIDVAL_E4:%[0-9]+]]:_(s32) = G_UNMERGE_VALUES [[MIDVAL]]:_(<5 x s32>)
  CHECK: [[MIDVAL_E01:%[0-9]+]]:_(<2 x s32>) = G_BUILD_VECTOR [[MIDVAL_E0]]:_(s32), [[MIDVAL_E1]]:_(s32)
  CHECK: [[MIDVAL_E23:%[0-9]+]]:_(<2 x s32>) = G_BUILD_VECTOR [[MIDVAL_E2]]:_(s32), [[MIDVAL_E3]]:_(s32)
  CHECK: G_BR

  CHECK: [[PHI0:%[0-9]+]]:_(<2 x s32>) = G_PHI [[INITVAL_E01]]:_(<2 x s32>), %bb.0, [[MIDVAL_E01]]:_(<2 x s32>), %bb.1
  CHECK: [[PHI1:%[0-9]+]]:_(<2 x s32>) = G_PHI [[INITVAL_E23]]:_(<2 x s32>), %bb.0, [[MIDVAL_E23]]:_(<2 x s32>), %bb.1
  CHECK: [[PHI2:%[0-9]+]]:_(s32) = G_PHI [[INITVAL_E4]]:_(s32), %bb.0, [[MIDVAL_E4]]:_(s32), %bb.1
  CHECK: [[UNMERGE0:%[0-9]+]]:_(s32), [[UNMERGE1:%[0-9]+]]:_(s32) = G_UNMERGE_VALUES [[PHI0]]:_(<2 x s32>)
  CHECK: [[UNMERGE2:%[0-9]+]]:_(s32), [[UNMERGE3:%[0-9]+]]:_(s32) = G_UNMERGE_VALUES [[PHI1]]:_(<2 x s32>)
  CHECK: [[BV:%[0-9]+]]:_(<5 x s32>) = G_BUILD_VECTOR [[UNMERGE0]]:_(s32), [[UNMERGE1]]:_(s32), [[UNMERGE2]]:_(s32), [[UNMERGE3]]:_(s32), [[PHI2]]:_(s32)

  CHECK: [[OTHER_PHI:%[0-9]+]]:_(s64) = G_PHI

  CHECK: [[USE_OP:%[0-9]+]]:_(<5 x s32>) = G_AND [[BV]]:_, [[BV]]:_
  )";

  EXPECT_TRUE(CheckMachineFunction(*MF, CheckStr)) << *MF;
}

// FNEG expansion in terms of XOR
TEST_F(AArch64GISelMITest, LowerFNEG) {
  setUp();
  if (!TM)
    return;

  // Declare your legalization info
  DefineLegalizerInfo(A, {
    getActionDefinitionsBuilder(G_FSUB).legalFor({s64});
  });

  // Build Instr. Make sure FMF are preserved.
  auto FAdd =
    B.buildInstr(TargetOpcode::G_FADD, {LLT::scalar(64)}, {Copies[0], Copies[1]},
                 MachineInstr::MIFlag::FmNsz);

  // Should not propagate the flags of src instruction.
  auto FNeg0 =
    B.buildInstr(TargetOpcode::G_FNEG, {LLT::scalar(64)}, {FAdd.getReg(0)},
                 {MachineInstr::MIFlag::FmArcp});

  // Preserve the one flag.
  auto FNeg1 =
    B.buildInstr(TargetOpcode::G_FNEG, {LLT::scalar(64)}, {Copies[0]},
                 MachineInstr::MIFlag::FmNoInfs);

  AInfo Info(MF->getSubtarget());
  DummyGISelObserver Observer;
  LegalizerHelper Helper(*MF, Info, Observer, B);
  // Perform Legalization
  B.setInstr(*FNeg0);
  EXPECT_EQ(LegalizerHelper::LegalizeResult::Legalized,
            Helper.lower(*FNeg0, 0, LLT::scalar(64)));
  B.setInstr(*FNeg1);
  EXPECT_EQ(LegalizerHelper::LegalizeResult::Legalized,
            Helper.lower(*FNeg1, 0, LLT::scalar(64)));

  auto CheckStr = R"(
  CHECK: [[FADD:%[0-9]+]]:_(s64) = nsz G_FADD %0:_, %1:_
  CHECK: [[CONST0:%[0-9]+]]:_(s64) = G_CONSTANT i64 -9223372036854775808
  CHECK: [[FSUB0:%[0-9]+]]:_(s64) = G_XOR [[FADD]]:_, [[CONST0]]:_
  CHECK: [[CONST1:%[0-9]+]]:_(s64) = G_CONSTANT i64 -9223372036854775808
  CHECK: [[FSUB1:%[0-9]+]]:_(s64) = G_XOR %0:_, [[CONST1]]:_
  )";

  // Check
  EXPECT_TRUE(CheckMachineFunction(*MF, CheckStr)) << *MF;
}

TEST_F(AArch64GISelMITest, LowerMinMax) {
  setUp();
  if (!TM)
    return;

  LLT s64 = LLT::scalar(64);
  LLT v2s32 = LLT::fixed_vector(2, 32);

  DefineLegalizerInfo(A, {
    getActionDefinitionsBuilder({G_SMIN, G_SMAX, G_UMIN, G_UMAX})
        .lowerFor({s64, LLT::fixed_vector(2, s32)});
  });

  auto SMin = B.buildSMin(s64, Copies[0], Copies[1]);
  auto SMax = B.buildSMax(s64, Copies[0], Copies[1]);
  auto UMin = B.buildUMin(s64, Copies[0], Copies[1]);
  auto UMax = B.buildUMax(s64, Copies[0], Copies[1]);

  auto VecVal0 = B.buildBitcast(v2s32, Copies[0]);
  auto VecVal1 = B.buildBitcast(v2s32, Copies[1]);

  auto SMinV = B.buildSMin(v2s32, VecVal0, VecVal1);
  auto SMaxV = B.buildSMax(v2s32, VecVal0, VecVal1);
  auto UMinV = B.buildUMin(v2s32, VecVal0, VecVal1);
  auto UMaxV = B.buildUMax(v2s32, VecVal0, VecVal1);

  AInfo Info(MF->getSubtarget());
  DummyGISelObserver Observer;
  LegalizerHelper Helper(*MF, Info, Observer, B);
  B.setInstr(*SMin);
  EXPECT_EQ(LegalizerHelper::LegalizeResult::Legalized,
            Helper.lower(*SMin, 0, s64));
  B.setInstr(*SMax);
  EXPECT_EQ(LegalizerHelper::LegalizeResult::Legalized,
            Helper.lower(*SMax, 0, s64));
  B.setInstr(*UMin);
  EXPECT_EQ(LegalizerHelper::LegalizeResult::Legalized,
            Helper.lower(*UMin, 0, s64));
  B.setInstr(*UMax);
  EXPECT_EQ(LegalizerHelper::LegalizeResult::Legalized,
            Helper.lower(*UMax, 0, s64));

  B.setInstr(*SMinV);
  EXPECT_EQ(LegalizerHelper::LegalizeResult::Legalized,
            Helper.lower(*SMinV, 0, v2s32));
  B.setInstr(*SMaxV);
  EXPECT_EQ(LegalizerHelper::LegalizeResult::Legalized,
            Helper.lower(*SMaxV, 0, v2s32));
  B.setInstr(*UMinV);
  EXPECT_EQ(LegalizerHelper::LegalizeResult::Legalized,
            Helper.lower(*UMinV, 0, v2s32));
  B.setInstr(*UMaxV);
  EXPECT_EQ(LegalizerHelper::LegalizeResult::Legalized,
            Helper.lower(*UMaxV, 0, v2s32));

  auto CheckStr = R"(
  CHECK: [[CMP0:%[0-9]+]]:_(s1) = G_ICMP intpred(slt), %0:_(s64), %1:_
  CHECK: [[SMIN:%[0-9]+]]:_(s64) = G_SELECT [[CMP0]]:_(s1), %0:_, %1:_

  CHECK: [[CMP1:%[0-9]+]]:_(s1) = G_ICMP intpred(sgt), %0:_(s64), %1:_
  CHECK: [[SMAX:%[0-9]+]]:_(s64) = G_SELECT [[CMP1]]:_(s1), %0:_, %1:_

  CHECK: [[CMP2:%[0-9]+]]:_(s1) = G_ICMP intpred(ult), %0:_(s64), %1:_
  CHECK: [[UMIN:%[0-9]+]]:_(s64) = G_SELECT [[CMP2]]:_(s1), %0:_, %1:_

  CHECK: [[CMP3:%[0-9]+]]:_(s1) = G_ICMP intpred(ugt), %0:_(s64), %1:_
  CHECK: [[UMAX:%[0-9]+]]:_(s64) = G_SELECT [[CMP3]]:_(s1), %0:_, %1:_

  CHECK: [[VEC0:%[0-9]+]]:_(<2 x s32>) = G_BITCAST %0:_(s64)
  CHECK: [[VEC1:%[0-9]+]]:_(<2 x s32>) = G_BITCAST %1:_(s64)

  CHECK: [[VCMP0:%[0-9]+]]:_(<2 x s1>) = G_ICMP intpred(slt), [[VEC0]]:_(<2 x s32>), [[VEC1]]:_
  CHECK: [[SMINV:%[0-9]+]]:_(<2 x s32>) = G_SELECT [[VCMP0]]:_(<2 x s1>), [[VEC0]]:_, [[VEC1]]:_

  CHECK: [[VCMP1:%[0-9]+]]:_(<2 x s1>) = G_ICMP intpred(sgt), [[VEC0]]:_(<2 x s32>), [[VEC1]]:_
  CHECK: [[SMAXV:%[0-9]+]]:_(<2 x s32>) = G_SELECT [[VCMP1]]:_(<2 x s1>), [[VEC0]]:_, [[VEC1]]:_

  CHECK: [[VCMP2:%[0-9]+]]:_(<2 x s1>) = G_ICMP intpred(ult), [[VEC0]]:_(<2 x s32>), [[VEC1]]:_
  CHECK: [[UMINV:%[0-9]+]]:_(<2 x s32>) = G_SELECT [[VCMP2]]:_(<2 x s1>), [[VEC0]]:_, [[VEC1]]:_

  CHECK: [[VCMP3:%[0-9]+]]:_(<2 x s1>) = G_ICMP intpred(ugt), [[VEC0]]:_(<2 x s32>), [[VEC1]]:_
  CHECK: [[UMAXV:%[0-9]+]]:_(<2 x s32>) = G_SELECT [[VCMP3]]:_(<2 x s1>), [[VEC0]]:_, [[VEC1]]:_
  )";

  EXPECT_TRUE(CheckMachineFunction(*MF, CheckStr)) << *MF;
}

TEST_F(AArch64GISelMITest, WidenScalarBuildVector) {
  setUp();
  if (!TM)
    return;

  LLT S32 = LLT::scalar(32);
  LLT S16 = LLT::scalar(16);
  LLT V2S16 = LLT::fixed_vector(2, S16);
  LLT V2S32 = LLT::fixed_vector(2, S32);

  DefineLegalizerInfo(A, {
    getActionDefinitionsBuilder({G_SMIN, G_SMAX, G_UMIN, G_UMAX})
        .lowerFor({s64, LLT::fixed_vector(2, s32)});
  });

  AInfo Info(MF->getSubtarget());
  DummyGISelObserver Observer;
  LegalizerHelper Helper(*MF, Info, Observer, B);
  B.setInsertPt(*EntryMBB, EntryMBB->end());

  Register Constant0 = B.buildConstant(S16, 1).getReg(0);
  Register Constant1 = B.buildConstant(S16, 2).getReg(0);
  auto BV0 = B.buildBuildVector(V2S16, {Constant0, Constant1});
  auto BV1 = B.buildBuildVector(V2S16, {Constant0, Constant1});

  B.setInstr(*BV0);
  EXPECT_EQ(LegalizerHelper::LegalizeResult::Legalized,
            Helper.widenScalar(*BV0, 0, V2S32));
  B.setInstr(*BV1);
  EXPECT_EQ(LegalizerHelper::LegalizeResult::Legalized,
            Helper.widenScalar(*BV1, 1, S32));

  auto CheckStr = R"(
  CHECK: [[K0:%[0-9]+]]:_(s16) = G_CONSTANT i16 1
  CHECK-NEXT: [[K1:%[0-9]+]]:_(s16) = G_CONSTANT i16 2
  CHECK-NEXT: [[EXT_K0_0:%[0-9]+]]:_(s32) = G_ANYEXT [[K0]]
  CHECK-NEXT: [[EXT_K1_0:%[0-9]+]]:_(s32) = G_ANYEXT [[K1]]
  CHECK-NEXT: [[BV0:%[0-9]+]]:_(<2 x s32>) = G_BUILD_VECTOR [[EXT_K0_0]]:_(s32), [[EXT_K1_0]]:_(s32)
  CHECK-NEXT: [[BV0_TRUNC:%[0-9]+]]:_(<2 x s16>) = G_TRUNC [[BV0]]

  CHECK: [[EXT_K0_1:%[0-9]+]]:_(s32) = G_ANYEXT [[K0]]
  CHECK-NEXT: [[EXT_K1_1:%[0-9]+]]:_(s32) = G_ANYEXT [[K1]]

  CHECK-NEXT: [[BV1:%[0-9]+]]:_(<2 x s16>) = G_BUILD_VECTOR_TRUNC [[EXT_K0_1]]:_(s32), [[EXT_K1_1]]:_(s32)
  )";

  EXPECT_TRUE(CheckMachineFunction(*MF, CheckStr)) << *MF;
}

TEST_F(AArch64GISelMITest, LowerMergeValues) {
  setUp();
  if (!TM)
    return;

  const LLT S32 = LLT::scalar(32);
  const LLT S24 = LLT::scalar(24);
  const LLT S21 = LLT::scalar(21);
  const LLT S16 = LLT::scalar(16);
  const LLT S9 = LLT::scalar(9);
  const LLT S8 = LLT::scalar(8);
  const LLT S3 = LLT::scalar(3);

  DefineLegalizerInfo(A, {
    getActionDefinitionsBuilder(G_UNMERGE_VALUES)
      .widenScalarIf(typeIs(1, LLT::scalar(3)), changeTo(1, LLT::scalar(9)));
  });

  AInfo Info(MF->getSubtarget());
  DummyGISelObserver Observer;
  LegalizerHelper Helper(*MF, Info, Observer, B);
  B.setInsertPt(*EntryMBB, EntryMBB->end());

  // 24 = 3 3 3   3 3 3   3 3
  //     => 9
  //
  // This can do 3 merges, but need an extra implicit_def.
  SmallVector<Register, 8> Merge0Ops;
  for (int I = 0; I != 8; ++I)
    Merge0Ops.push_back(B.buildConstant(S3, I).getReg(0));

  auto Merge0 = B.buildMerge(S24, Merge0Ops);

  // 21 = 3 3 3   3 3 3   3
  //     => 9, 2 extra implicit_def needed
  //
  SmallVector<Register, 8> Merge1Ops;
  for (int I = 0; I != 7; ++I)
    Merge1Ops.push_back(B.buildConstant(S3, I).getReg(0));

  auto Merge1 = B.buildMerge(S21, Merge1Ops);

  SmallVector<Register, 8> Merge2Ops;
  for (int I = 0; I != 2; ++I)
    Merge2Ops.push_back(B.buildConstant(S8, I).getReg(0));

  auto Merge2 = B.buildMerge(S16, Merge2Ops);

  B.setInstr(*Merge0);
  EXPECT_EQ(LegalizerHelper::LegalizeResult::Legalized,
            Helper.widenScalar(*Merge0, 1, S9));
  B.setInstr(*Merge1);
  EXPECT_EQ(LegalizerHelper::LegalizeResult::Legalized,
            Helper.widenScalar(*Merge1, 1, S9));

  // Request a source size greater than the original destination size.
  B.setInstr(*Merge2);
  EXPECT_EQ(LegalizerHelper::LegalizeResult::Legalized,
            Helper.widenScalar(*Merge2, 1, S32));

  auto CheckStr = R"(
  CHECK: [[K0:%[0-9]+]]:_(s3) = G_CONSTANT i3 0
  CHECK-NEXT: [[K1:%[0-9]+]]:_(s3) = G_CONSTANT i3 1
  CHECK-NEXT: [[K2:%[0-9]+]]:_(s3) = G_CONSTANT i3 2
  CHECK-NEXT: [[K3:%[0-9]+]]:_(s3) = G_CONSTANT i3 3
  CHECK-NEXT: [[K4:%[0-9]+]]:_(s3) = G_CONSTANT i3 -4
  CHECK-NEXT: [[K5:%[0-9]+]]:_(s3) = G_CONSTANT i3 -3
  CHECK-NEXT: [[K6:%[0-9]+]]:_(s3) = G_CONSTANT i3 -2
  CHECK-NEXT: [[K7:%[0-9]+]]:_(s3) = G_CONSTANT i3 -1
  CHECK-NEXT: [[IMPDEF0:%[0-9]+]]:_(s3) = G_IMPLICIT_DEF
  CHECK-NEXT: [[MERGE0:%[0-9]+]]:_(s9) = G_MERGE_VALUES [[K0]]:_(s3), [[K1]]:_(s3), [[K2]]:_(s3)
  CHECK-NEXT: [[MERGE1:%[0-9]+]]:_(s9) = G_MERGE_VALUES [[K3]]:_(s3), [[K4]]:_(s3), [[K5]]:_(s3)
  CHECK-NEXT: [[MERGE2:%[0-9]+]]:_(s9) = G_MERGE_VALUES [[K6]]:_(s3), [[K7]]:_(s3), [[IMPDEF0]]:_(s3)
  CHECK-NEXT: [[MERGE3:%[0-9]+]]:_(s27) = G_MERGE_VALUES [[MERGE0]]:_(s9), [[MERGE1]]:_(s9), [[MERGE2]]:_(s9)
  CHECK-NEXT: (s24) = G_TRUNC [[MERGE3]]:_(s27)


  CHECK: [[K8:%[0-9]+]]:_(s3) = G_CONSTANT i3 0
  CHECK-NEXT: [[K9:%[0-9]+]]:_(s3) = G_CONSTANT i3 1
  CHECK-NEXT: [[K10:%[0-9]+]]:_(s3) = G_CONSTANT i3 2
  CHECK-NEXT: [[K11:%[0-9]+]]:_(s3) = G_CONSTANT i3 3
  CHECK-NEXT: [[K12:%[0-9]+]]:_(s3) = G_CONSTANT i3 -4
  CHECK-NEXT: [[K13:%[0-9]+]]:_(s3) = G_CONSTANT i3 -3
  CHECK-NEXT: [[K14:%[0-9]+]]:_(s3) = G_CONSTANT i3 -2
  CHECK-NEXT: [[IMPDEF1:%[0-9]+]]:_(s3) = G_IMPLICIT_DEF
  CHECK-NEXT: [[MERGE4:%[0-9]+]]:_(s9) = G_MERGE_VALUES [[K8]]:_(s3), [[K9]]:_(s3), [[K10]]:_(s3)
  CHECK-NEXT: [[MERGE5:%[0-9]+]]:_(s9) = G_MERGE_VALUES [[K11]]:_(s3), [[K12]]:_(s3), [[K13]]:_(s3)
  CHECK-NEXT: [[MERGE6:%[0-9]+]]:_(s9) = G_MERGE_VALUES [[K14]]:_(s3), [[IMPDEF1]]:_(s3), [[IMPDEF1]]:_(s3)
  CHECK-NEXT: [[MERGE7:%[0-9]+]]:_(s27) = G_MERGE_VALUES [[MERGE4]]:_(s9), [[MERGE5]]:_(s9), [[MERGE6]]:_(s9)
  CHECK-NEXT: (s21) = G_TRUNC [[MERGE7]]:_(s27)


  CHECK: [[K15:%[0-9]+]]:_(s8) = G_CONSTANT i8 0
  CHECK-NEXT: [[K16:%[0-9]+]]:_(s8) = G_CONSTANT i8 1
  CHECK-NEXT: [[ZEXT_K15:[0-9]+]]:_(s32) = G_ZEXT [[K15]]:_(s8)
  CHECK-NEXT: [[ZEXT_K16:[0-9]+]]:_(s32) = G_ZEXT [[K16]]:_(s8)
  [[K16:%[0-9]+]]:_(s32) = G_CONSTANT i32 8
  [[SHL:%[0-9]+]]:_(s32) = G_SHL [[ZEXT_K16]]:_, [[K16]]:_(s32)
  [[OR:%[0-9]+]]:_(s32) = G_OR [[ZEXT_K16]]:_, [[SHL]]:_
  (s16) = G_TRUNC [[OR]]:_(s32)
  )";

  EXPECT_TRUE(CheckMachineFunction(*MF, CheckStr)) << *MF;
}

TEST_F(AArch64GISelMITest, WidenScalarMergeValuesPointer) {
  setUp();
  if (!TM)
    return;

  DefineLegalizerInfo(A, {});

  AInfo Info(MF->getSubtarget());
  DummyGISelObserver Observer;
  LegalizerHelper Helper(*MF, Info, Observer, B);
  B.setInsertPt(*EntryMBB, EntryMBB->end());

  const LLT S32 = LLT::scalar(32);
  const LLT S64 = LLT::scalar(64);
  const LLT P0 = LLT::pointer(0, 64);

  auto Lo = B.buildTrunc(S32, Copies[0]);
  auto Hi = B.buildTrunc(S32, Copies[1]);

  auto Merge = B.buildMerge(P0, {Lo, Hi});

  B.setInstr(*Merge);
  EXPECT_EQ(LegalizerHelper::LegalizeResult::Legalized,
            Helper.widenScalar(*Merge, 1, S64));

  auto CheckStr = R"(
   CHECK: [[TRUNC0:%[0-9]+]]:_(s32) = G_TRUNC
   CHECK: [[TRUNC1:%[0-9]+]]:_(s32) = G_TRUNC
   CHECK: [[ZEXT_TRUNC0:%[0-9]+]]:_(s64) = G_ZEXT [[TRUNC0]]
   CHECK: [[ZEXT_TRUNC1:%[0-9]+]]:_(s64) = G_ZEXT [[TRUNC1]]
   CHECK: [[SHIFT_AMT:%[0-9]+]]:_(s64) = G_CONSTANT i64 32
   CHECK: [[SHL:%[0-9]+]]:_(s64) = G_SHL [[ZEXT_TRUNC1]]:_, [[SHIFT_AMT]]
   CHECK: [[OR:%[0-9]+]]:_(s64) = G_OR [[ZEXT_TRUNC0]]:_, [[SHL]]
   CHECK: [[INTTOPTR:%[0-9]+]]:_(p0) = G_INTTOPTR [[OR]]:_(s64)
  )";

  EXPECT_TRUE(CheckMachineFunction(*MF, CheckStr)) << *MF;
}

TEST_F(AArch64GISelMITest, WidenSEXTINREG) {
  setUp();
  if (!TM)
    return;

  // Declare your legalization info
  DefineLegalizerInfo(A, {
    getActionDefinitionsBuilder(G_SEXT_INREG).legalForTypeWithAnyImm({s64});
  });
  // Build Instr
  auto MIB = B.buildInstr(
      TargetOpcode::G_SEXT_INREG, {LLT::scalar(32)},
      {B.buildInstr(TargetOpcode::G_TRUNC, {LLT::scalar(32)}, {Copies[0]}),
       uint64_t(8)});
  AInfo Info(MF->getSubtarget());
  DummyGISelObserver Observer;
  LegalizerHelper Helper(*MF, Info, Observer, B);
  // Perform Legalization
  B.setInstr(*MIB);
  ASSERT_TRUE(Helper.widenScalar(*MIB, 0, LLT::scalar(64)) ==
              LegalizerHelper::LegalizeResult::Legalized);

  auto CheckStr = R"(
  CHECK: [[T0:%[0-9]+]]:_(s32) = G_TRUNC
  CHECK: [[T1:%[0-9]+]]:_(s64) = G_ANYEXT [[T0]]:_(s32)
  CHECK: [[T2:%[0-9]+]]:_(s64) = G_SEXT_INREG [[T1]]:_, 8
  CHECK: [[T3:%[0-9]+]]:_(s32) = G_TRUNC [[T2]]:_(s64)
  )";

  // Check
  ASSERT_TRUE(CheckMachineFunction(*MF, CheckStr)) << *MF;
}

TEST_F(AArch64GISelMITest, NarrowSEXTINREG) {
  setUp();
  if (!TM)
    return;

  // Declare your legalization info, these aren't actually relevant to the test.
  DefineLegalizerInfo(A, {
    getActionDefinitionsBuilder(G_SEXT_INREG).legalForTypeWithAnyImm({s64});
  });
  // Build Instr
  auto MIB = B.buildInstr(
      TargetOpcode::G_SEXT_INREG, {LLT::scalar(16)},
      {B.buildInstr(TargetOpcode::G_TRUNC, {LLT::scalar(16)}, {Copies[0]}),
       uint64_t(8)});
  AInfo Info(MF->getSubtarget());
  DummyGISelObserver Observer;
  LegalizerHelper Helper(*MF, Info, Observer, B);
  // Perform Legalization
  B.setInstr(*MIB);
  ASSERT_TRUE(Helper.narrowScalar(*MIB, 0, LLT::scalar(10)) ==
              LegalizerHelper::LegalizeResult::Legalized);

  auto CheckStr = R"(
  CHECK: [[T0:%[0-9]+]]:_(s16) = G_TRUNC
  CHECK: [[T1:%[0-9]+]]:_(s10) = G_TRUNC [[T0]]:_(s16)
  CHECK: [[T2:%[0-9]+]]:_(s10) = G_SEXT_INREG [[T1]]:_, 8
  CHECK: [[T3:%[0-9]+]]:_(s16) = G_SEXT [[T2]]:_(s10)
  )";

  // Check
  ASSERT_TRUE(CheckMachineFunction(*MF, CheckStr)) << *MF;
}

TEST_F(AArch64GISelMITest, NarrowSEXTINREG2) {
  setUp();
  if (!TM)
    return;

  // Declare your legalization info, these aren't actually relevant to the test.
  DefineLegalizerInfo(
      A, { getActionDefinitionsBuilder(G_SEXT_INREG).legalForTypeWithAnyImm({s64}); });
  // Build Instr
  auto MIB = B.buildInstr(
      TargetOpcode::G_SEXT_INREG, {LLT::scalar(32)},
      {B.buildInstr(TargetOpcode::G_TRUNC, {LLT::scalar(32)}, {Copies[0]}),
       uint64_t(9)});
  AInfo Info(MF->getSubtarget());
  DummyGISelObserver Observer;
  LegalizerHelper Helper(*MF, Info, Observer, B);
  // Perform Legalization
  B.setInstr(*MIB);
  ASSERT_TRUE(Helper.narrowScalar(*MIB, 0, LLT::scalar(8)) ==
              LegalizerHelper::LegalizeResult::Legalized);

  auto CheckStr = R"(
  CHECK: [[T0:%[0-9]+]]:_(s32) = G_TRUNC
  CHECK: [[T1:%[0-9]+]]:_(s8), [[T2:%[0-9]+]]:_(s8), [[T3:%[0-9]+]]:_(s8), [[T4:%[0-9]+]]:_(s8) = G_UNMERGE_VALUES [[T0]]:_(s32)
  CHECK: [[CST2:%[0-9]+]]:_(s8) = G_CONSTANT i8 7
  CHECK: [[T5:%[0-9]+]]:_(s8) = G_SEXT_INREG [[T2]]:_, 1
  CHECK: [[T6:%[0-9]+]]:_(s8) = G_ASHR [[T5]]:_, [[CST2]]:_
  CHECK: [[T7:%[0-9]+]]:_(s32) = G_MERGE_VALUES [[T1]]:_(s8), [[T5]]:_(s8), [[T6]]:_(s8), [[T6]]:_(s8)
  )";

  // Check
  ASSERT_TRUE(CheckMachineFunction(*MF, CheckStr));
}

TEST_F(AArch64GISelMITest, LowerSEXTINREG) {
  setUp();
  if (!TM)
    return;

  // Declare your legalization info, these aren't actually relevant to the test.
  DefineLegalizerInfo(
      A, { getActionDefinitionsBuilder(G_SEXT_INREG).legalForTypeWithAnyImm({s64}); });
  // Build Instr
  auto MIB = B.buildInstr(
      TargetOpcode::G_SEXT_INREG, {LLT::scalar(32)},
      {B.buildInstr(TargetOpcode::G_TRUNC, {LLT::scalar(32)}, {Copies[0]}),
       uint64_t(8)});
  AInfo Info(MF->getSubtarget());
  DummyGISelObserver Observer;
  LegalizerHelper Helper(*MF, Info, Observer, B);
  // Perform Legalization
  B.setInstr(*MIB);
  ASSERT_TRUE(Helper.lower(*MIB, 0, LLT()) ==
              LegalizerHelper::LegalizeResult::Legalized);

  auto CheckStr = R"(
  CHECK: [[T1:%[0-9]+]]:_(s32) = G_TRUNC
  CHECK: [[CST:%[0-9]+]]:_(s32) = G_CONSTANT i32 24
  CHECK: [[T2:%[0-9]+]]:_(s32) = G_SHL [[T1]]:_, [[CST]]:_
  CHECK: [[T3:%[0-9]+]]:_(s32) = G_ASHR [[T2]]:_, [[CST]]:_
  )";

  // Check
  ASSERT_TRUE(CheckMachineFunction(*MF, CheckStr));
}

TEST_F(AArch64GISelMITest, LibcallFPExt) {
  setUp();
  if (!TM)
    return;

  // Declare your legalization info
  DefineLegalizerInfo(A, {
    getActionDefinitionsBuilder(G_FPEXT).libcallFor({{s32, s16}, {s128, s64}});
  });

  LLT S16{LLT::scalar(16)};
  LLT S32{LLT::scalar(32)};
  LLT S128{LLT::scalar(128)};
  auto MIBTrunc = B.buildTrunc(S16, Copies[0]);
  auto MIBFPExt1 =
      B.buildInstr(TargetOpcode::G_FPEXT, {S32}, {MIBTrunc});

  auto MIBFPExt2 =
      B.buildInstr(TargetOpcode::G_FPEXT, {S128}, {Copies[1]});
  AInfo Info(MF->getSubtarget());
  DummyGISelObserver Observer;
  LegalizerHelper Helper(*MF, Info, Observer, B);
  LostDebugLocObserver DummyLocObserver("");
  EXPECT_EQ(LegalizerHelper::LegalizeResult::Legalized,
              Helper.libcall(*MIBFPExt1, DummyLocObserver));

  EXPECT_EQ(LegalizerHelper::LegalizeResult::Legalized,
              Helper.libcall(*MIBFPExt2, DummyLocObserver));
  auto CheckStr = R"(
  CHECK: [[TRUNC:%[0-9]+]]:_(s16) = G_TRUNC
  CHECK: $h0 = COPY [[TRUNC]]
  CHECK: BL &__gnu_h2f_ieee
  CHECK: $d0 = COPY
  CHECK: BL &__extenddftf2
  )";

  // Check
  EXPECT_TRUE(CheckMachineFunction(*MF, CheckStr)) << *MF;
}

TEST_F(AArch64GISelMITest, LibcallFPTrunc) {
  setUp();
  if (!TM)
    return;

  // Declare your legalization info
  DefineLegalizerInfo(A, {
    getActionDefinitionsBuilder(G_FPTRUNC).libcallFor({{s16, s32}, {s64, s128}});
  });

  LLT S16{LLT::scalar(16)};
  LLT S32{LLT::scalar(32)};
  LLT S64{LLT::scalar(64)};
  LLT S128{LLT::scalar(128)};
  auto MIBTrunc = B.buildTrunc(S32, Copies[0]);
  auto MIBFPTrunc1 =
      B.buildInstr(TargetOpcode::G_FPTRUNC, {S16}, {MIBTrunc});

  auto MIBMerge = B.buildMerge(S128, {Copies[1], Copies[2]});

  auto MIBFPTrunc2 =
      B.buildInstr(TargetOpcode::G_FPTRUNC, {S64}, {MIBMerge});
  AInfo Info(MF->getSubtarget());
  DummyGISelObserver Observer;
  LostDebugLocObserver DummyLocObserver("");
  LegalizerHelper Helper(*MF, Info, Observer, B);
  EXPECT_EQ(LegalizerHelper::LegalizeResult::Legalized,
            Helper.libcall(*MIBFPTrunc1, DummyLocObserver));

  EXPECT_EQ(LegalizerHelper::LegalizeResult::Legalized,
            Helper.libcall(*MIBFPTrunc2, DummyLocObserver));
  auto CheckStr = R"(
  CHECK: [[TRUNC:%[0-9]+]]:_(s32) = G_TRUNC
  CHECK: $s0 = COPY [[TRUNC]]
  CHECK: BL &__gnu_f2h_ieee
  CHECK: $q0 = COPY
  CHECK: BL &__trunctfdf2
  )";

  // Check
  EXPECT_TRUE(CheckMachineFunction(*MF, CheckStr)) << *MF;
}

TEST_F(AArch64GISelMITest, LibcallSimple) {
  setUp();
  if (!TM)
    return;

  // Declare your legalization info
  DefineLegalizerInfo(A, {
    getActionDefinitionsBuilder(G_FADD).libcallFor({s16});
  });

  LLT S16{LLT::scalar(16)};
  auto MIBTrunc = B.buildTrunc(S16, Copies[0]);
  auto MIBFADD =
      B.buildInstr(TargetOpcode::G_FADD, {S16}, {MIBTrunc, MIBTrunc});

  AInfo Info(MF->getSubtarget());
  DummyGISelObserver Observer;
  LostDebugLocObserver DummyLocObserver("");
  LegalizerHelper Helper(*MF, Info, Observer, B);
  // Make sure we do not crash anymore
  EXPECT_EQ(LegalizerHelper::LegalizeResult::UnableToLegalize,
            Helper.libcall(*MIBFADD, DummyLocObserver));
}

TEST_F(AArch64GISelMITest, LibcallSRem) {
  setUp();
  if (!TM)
    return;

  // Declare your legalization info
  DefineLegalizerInfo(A, {
    getActionDefinitionsBuilder(G_SREM).libcallFor({s32, s64, s128});
  });

  LLT S32{LLT::scalar(32)};
  LLT S64{LLT::scalar(64)};
  LLT S128{LLT::scalar(128)};
  auto MIBTrunc = B.buildTrunc(S32, Copies[0]);
  auto MIBExt = B.buildAnyExt(S128, Copies[0]);

  auto MIBSRem32 =
      B.buildInstr(TargetOpcode::G_SREM, {S32}, {MIBTrunc, MIBTrunc});
  auto MIBSRem64 =
      B.buildInstr(TargetOpcode::G_SREM, {S64}, {Copies[0], Copies[0]});
  auto MIBSRem128 =
      B.buildInstr(TargetOpcode::G_SREM, {S128}, {MIBExt, MIBExt});

  AInfo Info(MF->getSubtarget());
  DummyGISelObserver Observer;
  LostDebugLocObserver DummyLocObserver("");
  LegalizerHelper Helper(*MF, Info, Observer, B);

  EXPECT_EQ(LegalizerHelper::LegalizeResult::Legalized,
            Helper.libcall(*MIBSRem32, DummyLocObserver));
  EXPECT_EQ(LegalizerHelper::LegalizeResult::Legalized,
            Helper.libcall(*MIBSRem64, DummyLocObserver));
  EXPECT_EQ(LegalizerHelper::LegalizeResult::Legalized,
            Helper.libcall(*MIBSRem128, DummyLocObserver));

  auto CheckStr = R"(
  CHECK: [[COPY:%[0-9]+]]:_(s64) = COPY
  CHECK: [[TRUNC:%[0-9]+]]:_(s32) = G_TRUNC
  CHECK: [[ANYEXT:%[0-9]+]]:_(s128) = G_ANYEXT
  CHECK: $w0 = COPY [[TRUNC]]
  CHECK: $w1 = COPY [[TRUNC]]
  CHECK: BL &__modsi3
  CHECK: $x0 = COPY [[COPY]]
  CHECK: $x1 = COPY [[COPY]]
  CHECK: BL &__moddi3
  CHECK: [[UV:%[0-9]+]]:_(s64), [[UV1:%[0-9]+]]:_(s64) = G_UNMERGE_VALUES [[ANYEXT]]
  CHECK: [[UV2:%[0-9]+]]:_(s64), [[UV3:%[0-9]+]]:_(s64) = G_UNMERGE_VALUES [[ANYEXT]]
  CHECK: $x0 = COPY [[UV]]
  CHECK: $x1 = COPY [[UV1]]
  CHECK: $x2 = COPY [[UV2]]
  CHECK: $x3 = COPY [[UV3]]
  CHECK: BL &__modti3
  )";

  // Check
  EXPECT_TRUE(CheckMachineFunction(*MF, CheckStr)) << *MF;
}

TEST_F(AArch64GISelMITest, LibcallURem) {
  setUp();
  if (!TM)
    return;

  // Declare your legalization info
  DefineLegalizerInfo(A, {
    getActionDefinitionsBuilder(G_UREM).libcallFor({s32, s64, s128});
  });

  LLT S32{LLT::scalar(32)};
  LLT S64{LLT::scalar(64)};
  LLT S128{LLT::scalar(128)};
  auto MIBTrunc = B.buildTrunc(S32, Copies[0]);
  auto MIBExt = B.buildAnyExt(S128, Copies[0]);

  auto MIBURem32 =
      B.buildInstr(TargetOpcode::G_UREM, {S32}, {MIBTrunc, MIBTrunc});
  auto MIBURem64 =
      B.buildInstr(TargetOpcode::G_UREM, {S64}, {Copies[0], Copies[0]});
  auto MIBURem128 =
      B.buildInstr(TargetOpcode::G_UREM, {S128}, {MIBExt, MIBExt});

  AInfo Info(MF->getSubtarget());
  DummyGISelObserver Observer;
  LostDebugLocObserver DummyLocObserver("");
  LegalizerHelper Helper(*MF, Info, Observer, B);

  EXPECT_EQ(LegalizerHelper::LegalizeResult::Legalized,
            Helper.libcall(*MIBURem32, DummyLocObserver));
  EXPECT_EQ(LegalizerHelper::LegalizeResult::Legalized,
            Helper.libcall(*MIBURem64, DummyLocObserver));
  EXPECT_EQ(LegalizerHelper::LegalizeResult::Legalized,
            Helper.libcall(*MIBURem128, DummyLocObserver));

  const auto *CheckStr = R"(
  CHECK: [[COPY:%[0-9]+]]:_(s64) = COPY
  CHECK: [[TRUNC:%[0-9]+]]:_(s32) = G_TRUNC
  CHECK: [[ANYEXT:%[0-9]+]]:_(s128) = G_ANYEXT
  CHECK: $w0 = COPY [[TRUNC]]
  CHECK: $w1 = COPY [[TRUNC]]
  CHECK: BL &__umodsi3
  CHECK: $x0 = COPY [[COPY]]
  CHECK: $x1 = COPY [[COPY]]
  CHECK: BL &__umoddi3
  CHECK: [[UV:%[0-9]+]]:_(s64), [[UV1:%[0-9]+]]:_(s64) = G_UNMERGE_VALUES [[ANYEXT]]
  CHECK: [[UV2:%[0-9]+]]:_(s64), [[UV3:%[0-9]+]]:_(s64) = G_UNMERGE_VALUES [[ANYEXT]]
  CHECK: $x0 = COPY [[UV]]
  CHECK: $x1 = COPY [[UV1]]
  CHECK: $x2 = COPY [[UV2]]
  CHECK: $x3 = COPY [[UV3]]
  CHECK: BL &__umodti3
  )";

  // Check
  EXPECT_TRUE(CheckMachineFunction(*MF, CheckStr)) << *MF;
}

TEST_F(AArch64GISelMITest, LibcallCtlzZeroUndef) {
  setUp();
  if (!TM)
    return;

  // Declare your legalization info
  DefineLegalizerInfo(A, {
    getActionDefinitionsBuilder(G_CTLZ_ZERO_UNDEF)
        .libcallFor({{s32, s32}, {s64, s64}, {s128, s128}});
  });

  LLT S32{LLT::scalar(32)};
  LLT S64{LLT::scalar(64)};
  LLT S128{LLT::scalar(128)};
  auto MIBTrunc = B.buildTrunc(S32, Copies[0]);
  auto MIBExt = B.buildAnyExt(S128, Copies[0]);

  auto MIBCtlz32 =
      B.buildInstr(TargetOpcode::G_CTLZ_ZERO_UNDEF, {S32}, {MIBTrunc});
  auto MIBCtlz64 =
      B.buildInstr(TargetOpcode::G_CTLZ_ZERO_UNDEF, {S64}, {Copies[0]});
  auto MIBCtlz128 =
      B.buildInstr(TargetOpcode::G_CTLZ_ZERO_UNDEF, {S128}, {MIBExt});

  AInfo Info(MF->getSubtarget());
  DummyGISelObserver Observer;
  LostDebugLocObserver DummyLocObserver("");
  LegalizerHelper Helper(*MF, Info, Observer, B);

  EXPECT_EQ(LegalizerHelper::LegalizeResult::Legalized,
            Helper.libcall(*MIBCtlz32, DummyLocObserver));
  EXPECT_EQ(LegalizerHelper::LegalizeResult::Legalized,
            Helper.libcall(*MIBCtlz64, DummyLocObserver));
  EXPECT_EQ(LegalizerHelper::LegalizeResult::Legalized,
            Helper.libcall(*MIBCtlz128, DummyLocObserver));

  const auto *CheckStr = R"(
  CHECK: [[COPY:%[0-9]+]]:_(s64) = COPY
  CHECK: [[TRUNC:%[0-9]+]]:_(s32) = G_TRUNC
  CHECK: [[ANYEXT:%[0-9]+]]:_(s128) = G_ANYEXT
  CHECK: $w0 = COPY [[TRUNC]]
  CHECK: BL &__clzsi2
  CHECK: $x0 = COPY [[COPY]]
  CHECK: BL &__clzdi2
  CHECK: [[UV:%[0-9]+]]:_(s64), [[UV1:%[0-9]+]]:_(s64) = G_UNMERGE_VALUES [[ANYEXT]]
  CHECK: $x0 = COPY [[UV]]
  CHECK: $x1 = COPY [[UV1]]
  CHECK: BL &__clzti2
  )";

  // Check
  EXPECT_TRUE(CheckMachineFunction(*MF, CheckStr)) << *MF;
}

TEST_F(AArch64GISelMITest, LibcallFAdd) {
  setUp();
  if (!TM)
    return;

  // Declare your legalization info
  DefineLegalizerInfo(A, {
    getActionDefinitionsBuilder(G_FADD).libcallFor({s32, s64, s128});
  });

  LLT S32{LLT::scalar(32)};
  LLT S64{LLT::scalar(64)};
  LLT S128{LLT::scalar(128)};
  auto MIBTrunc = B.buildTrunc(S32, Copies[0]);
  auto MIBExt = B.buildAnyExt(S128, Copies[0]);

  auto MIBAdd32 =
      B.buildInstr(TargetOpcode::G_FADD, {S32}, {MIBTrunc, MIBTrunc});
  auto MIBAdd64 =
      B.buildInstr(TargetOpcode::G_FADD, {S64}, {Copies[0], Copies[0]});
  auto MIBAdd128 = B.buildInstr(TargetOpcode::G_FADD, {S128}, {MIBExt, MIBExt});

  AInfo Info(MF->getSubtarget());
  DummyGISelObserver Observer;
  LostDebugLocObserver DummyLocObserver("");
  LegalizerHelper Helper(*MF, Info, Observer, B);

  EXPECT_EQ(LegalizerHelper::LegalizeResult::Legalized,
            Helper.libcall(*MIBAdd32, DummyLocObserver));
  EXPECT_EQ(LegalizerHelper::LegalizeResult::Legalized,
            Helper.libcall(*MIBAdd64, DummyLocObserver));
  EXPECT_EQ(LegalizerHelper::LegalizeResult::Legalized,
            Helper.libcall(*MIBAdd128, DummyLocObserver));

  const auto *CheckStr = R"(
  CHECK: [[COPY:%[0-9]+]]:_(s64) = COPY
  CHECK: [[TRUNC:%[0-9]+]]:_(s32) = G_TRUNC
  CHECK: [[ANYEXT:%[0-9]+]]:_(s128) = G_ANYEXT
  CHECK: $s0 = COPY [[TRUNC]]
  CHECK: $s1 = COPY [[TRUNC]]
  CHECK: BL &__addsf3
  CHECK: $d0 = COPY [[COPY]]
  CHECK: $d1 = COPY [[COPY]]
  CHECK: BL &__adddf3
  CHECK: $q0 = COPY [[ANYEXT]]
  CHECK: $q1 = COPY [[ANYEXT]]
  CHECK: BL &__addtf3
  )";

  // Check
  EXPECT_TRUE(CheckMachineFunction(*MF, CheckStr)) << *MF;
}

TEST_F(AArch64GISelMITest, LibcallFSub) {
  setUp();
  if (!TM)
    return;

  // Declare your legalization info
  DefineLegalizerInfo(A, {
    getActionDefinitionsBuilder(G_FSUB).libcallFor({s32, s64, s128});
  });

  LLT S32{LLT::scalar(32)};
  LLT S64{LLT::scalar(64)};
  LLT S128{LLT::scalar(128)};
  auto MIBTrunc = B.buildTrunc(S32, Copies[0]);
  auto MIBExt = B.buildAnyExt(S128, Copies[0]);

  auto MIBSub32 =
      B.buildInstr(TargetOpcode::G_FSUB, {S32}, {MIBTrunc, MIBTrunc});
  auto MIBSub64 =
      B.buildInstr(TargetOpcode::G_FSUB, {S64}, {Copies[0], Copies[0]});
  auto MIBSub128 = B.buildInstr(TargetOpcode::G_FSUB, {S128}, {MIBExt, MIBExt});

  AInfo Info(MF->getSubtarget());
  DummyGISelObserver Observer;
  LostDebugLocObserver DummyLocObserver("");
  LegalizerHelper Helper(*MF, Info, Observer, B);

  EXPECT_EQ(LegalizerHelper::LegalizeResult::Legalized,
            Helper.libcall(*MIBSub32, DummyLocObserver));
  EXPECT_EQ(LegalizerHelper::LegalizeResult::Legalized,
            Helper.libcall(*MIBSub64, DummyLocObserver));
  EXPECT_EQ(LegalizerHelper::LegalizeResult::Legalized,
            Helper.libcall(*MIBSub128, DummyLocObserver));

  const auto *CheckStr = R"(
  CHECK: [[COPY:%[0-9]+]]:_(s64) = COPY
  CHECK: [[TRUNC:%[0-9]+]]:_(s32) = G_TRUNC
  CHECK: [[ANYEXT:%[0-9]+]]:_(s128) = G_ANYEXT
  CHECK: $s0 = COPY [[TRUNC]]
  CHECK: $s1 = COPY [[TRUNC]]
  CHECK: BL &__subsf3
  CHECK: $d0 = COPY [[COPY]]
  CHECK: $d1 = COPY [[COPY]]
  CHECK: BL &__subdf3
  CHECK: $q0 = COPY [[ANYEXT]]
  CHECK: $q1 = COPY [[ANYEXT]]
  CHECK: BL &__subtf3
  )";

  // Check
  EXPECT_TRUE(CheckMachineFunction(*MF, CheckStr)) << *MF;
}

TEST_F(AArch64GISelMITest, LibcallFMul) {
  setUp();
  if (!TM)
    return;

  // Declare your legalization info
  DefineLegalizerInfo(A, {
    getActionDefinitionsBuilder(G_FMUL).libcallFor({s32, s64, s128});
  });

  LLT S32{LLT::scalar(32)};
  LLT S64{LLT::scalar(64)};
  LLT S128{LLT::scalar(128)};
  auto MIBTrunc = B.buildTrunc(S32, Copies[0]);
  auto MIBExt = B.buildAnyExt(S128, Copies[0]);

  auto MIBMul32 =
      B.buildInstr(TargetOpcode::G_FMUL, {S32}, {MIBTrunc, MIBTrunc});
  auto MIBMul64 =
      B.buildInstr(TargetOpcode::G_FMUL, {S64}, {Copies[0], Copies[0]});
  auto MIBMul128 = B.buildInstr(TargetOpcode::G_FMUL, {S128}, {MIBExt, MIBExt});

  AInfo Info(MF->getSubtarget());
  DummyGISelObserver Observer;
  LegalizerHelper Helper(*MF, Info, Observer, B);
  LostDebugLocObserver DummyLocObserver("");

  EXPECT_EQ(LegalizerHelper::LegalizeResult::Legalized,
            Helper.libcall(*MIBMul32, DummyLocObserver));
  EXPECT_EQ(LegalizerHelper::LegalizeResult::Legalized,
            Helper.libcall(*MIBMul64, DummyLocObserver));
  EXPECT_EQ(LegalizerHelper::LegalizeResult::Legalized,
            Helper.libcall(*MIBMul128, DummyLocObserver));

  const auto *CheckStr = R"(
  CHECK: [[COPY:%[0-9]+]]:_(s64) = COPY
  CHECK: [[TRUNC:%[0-9]+]]:_(s32) = G_TRUNC
  CHECK: [[ANYEXT:%[0-9]+]]:_(s128) = G_ANYEXT
  CHECK: $s0 = COPY [[TRUNC]]
  CHECK: $s1 = COPY [[TRUNC]]
  CHECK: BL &__mulsf3
  CHECK: $d0 = COPY [[COPY]]
  CHECK: $d1 = COPY [[COPY]]
  CHECK: BL &__muldf3
  CHECK: $q0 = COPY [[ANYEXT]]
  CHECK: $q1 = COPY [[ANYEXT]]
  CHECK: BL &__multf3
  )";

  // Check
  EXPECT_TRUE(CheckMachineFunction(*MF, CheckStr)) << *MF;
}

TEST_F(AArch64GISelMITest, LibcallFDiv) {
  setUp();
  if (!TM)
    return;

  // Declare your legalization info
  DefineLegalizerInfo(A, {
    getActionDefinitionsBuilder(G_FDIV).libcallFor({s32, s64, s128});
  });

  LLT S32{LLT::scalar(32)};
  LLT S64{LLT::scalar(64)};
  LLT S128{LLT::scalar(128)};
  auto MIBTrunc = B.buildTrunc(S32, Copies[0]);
  auto MIBExt = B.buildAnyExt(S128, Copies[0]);

  auto MIBDiv32 =
      B.buildInstr(TargetOpcode::G_FDIV, {S32}, {MIBTrunc, MIBTrunc});
  auto MIBDiv64 =
      B.buildInstr(TargetOpcode::G_FDIV, {S64}, {Copies[0], Copies[0]});
  auto MIBDiv128 = B.buildInstr(TargetOpcode::G_FDIV, {S128}, {MIBExt, MIBExt});

  AInfo Info(MF->getSubtarget());
  DummyGISelObserver Observer;
  LostDebugLocObserver DummyLocObserver("");
  LegalizerHelper Helper(*MF, Info, Observer, B);

  EXPECT_EQ(LegalizerHelper::LegalizeResult::Legalized,
            Helper.libcall(*MIBDiv32, DummyLocObserver));
  EXPECT_EQ(LegalizerHelper::LegalizeResult::Legalized,
            Helper.libcall(*MIBDiv64, DummyLocObserver));
  EXPECT_EQ(LegalizerHelper::LegalizeResult::Legalized,
            Helper.libcall(*MIBDiv128, DummyLocObserver));

  const auto *CheckStr = R"(
  CHECK: [[COPY:%[0-9]+]]:_(s64) = COPY
  CHECK: [[TRUNC:%[0-9]+]]:_(s32) = G_TRUNC
  CHECK: [[ANYEXT:%[0-9]+]]:_(s128) = G_ANYEXT
  CHECK: $s0 = COPY [[TRUNC]]
  CHECK: $s1 = COPY [[TRUNC]]
  CHECK: BL &__divsf3
  CHECK: $d0 = COPY [[COPY]]
  CHECK: $d1 = COPY [[COPY]]
  CHECK: BL &__divdf3
  CHECK: $q0 = COPY [[ANYEXT]]
  CHECK: $q1 = COPY [[ANYEXT]]
  CHECK: BL &__divtf3
  )";

  // Check
  EXPECT_TRUE(CheckMachineFunction(*MF, CheckStr)) << *MF;
}

TEST_F(AArch64GISelMITest, LibcallFExp) {
  setUp();
  if (!TM)
    return;

  // Declare your legalization info
  DefineLegalizerInfo(A, {
    getActionDefinitionsBuilder(G_FEXP).libcallFor({s32, s64, s128});
  });

  LLT S32{LLT::scalar(32)};
  LLT S64{LLT::scalar(64)};
  LLT S128{LLT::scalar(128)};
  auto MIBTrunc = B.buildTrunc(S32, Copies[0]);
  auto MIBExt = B.buildAnyExt(S128, Copies[0]);

  auto MIBExp32 = B.buildInstr(TargetOpcode::G_FEXP, {S32}, {MIBTrunc});
  auto MIBExp64 = B.buildInstr(TargetOpcode::G_FEXP, {S64}, {Copies[0]});
  auto MIBExp128 = B.buildInstr(TargetOpcode::G_FEXP, {S128}, {MIBExt});

  AInfo Info(MF->getSubtarget());
  DummyGISelObserver Observer;
  LostDebugLocObserver DummyLocObserver("");
  LegalizerHelper Helper(*MF, Info, Observer, B);

  EXPECT_EQ(LegalizerHelper::LegalizeResult::Legalized,
            Helper.libcall(*MIBExp32, DummyLocObserver));
  EXPECT_EQ(LegalizerHelper::LegalizeResult::Legalized,
            Helper.libcall(*MIBExp64, DummyLocObserver));
  EXPECT_EQ(LegalizerHelper::LegalizeResult::Legalized,
            Helper.libcall(*MIBExp128, DummyLocObserver));

  const auto *CheckStr = R"(
  CHECK: [[COPY:%[0-9]+]]:_(s64) = COPY
  CHECK: [[TRUNC:%[0-9]+]]:_(s32) = G_TRUNC
  CHECK: [[ANYEXT:%[0-9]+]]:_(s128) = G_ANYEXT
  CHECK: $s0 = COPY [[TRUNC]]
  CHECK: BL &expf
  CHECK: $d0 = COPY [[COPY]]
  CHECK: BL &exp
  CHECK: $q0 = COPY [[ANYEXT]]
  CHECK: BL &expl
  )";

  // Check
  EXPECT_TRUE(CheckMachineFunction(*MF, CheckStr)) << *MF;
}

TEST_F(AArch64GISelMITest, LibcallFExp2) {
  setUp();
  if (!TM)
    return;

  // Declare your legalization info
  DefineLegalizerInfo(A, {
    getActionDefinitionsBuilder(G_FEXP2).libcallFor({s32, s64, s128});
  });

  LLT S32{LLT::scalar(32)};
  LLT S64{LLT::scalar(64)};
  LLT S128{LLT::scalar(128)};
  auto MIBTrunc = B.buildTrunc(S32, Copies[0]);
  auto MIBExt = B.buildAnyExt(S128, Copies[0]);

  auto MIBExp232 = B.buildInstr(TargetOpcode::G_FEXP2, {S32}, {MIBTrunc});
  auto MIBExp264 = B.buildInstr(TargetOpcode::G_FEXP2, {S64}, {Copies[0]});
  auto MIBExp2128 = B.buildInstr(TargetOpcode::G_FEXP2, {S128}, {MIBExt});

  AInfo Info(MF->getSubtarget());
  DummyGISelObserver Observer;
  LostDebugLocObserver DummyLocObserver("");
  LegalizerHelper Helper(*MF, Info, Observer, B);

  EXPECT_EQ(LegalizerHelper::LegalizeResult::Legalized,
            Helper.libcall(*MIBExp232, DummyLocObserver));
  EXPECT_EQ(LegalizerHelper::LegalizeResult::Legalized,
            Helper.libcall(*MIBExp264, DummyLocObserver));
  EXPECT_EQ(LegalizerHelper::LegalizeResult::Legalized,
            Helper.libcall(*MIBExp2128, DummyLocObserver));

  const auto *CheckStr = R"(
  CHECK: [[COPY:%[0-9]+]]:_(s64) = COPY
  CHECK: [[TRUNC:%[0-9]+]]:_(s32) = G_TRUNC
  CHECK: [[ANYEXT:%[0-9]+]]:_(s128) = G_ANYEXT
  CHECK: $s0 = COPY [[TRUNC]]
  CHECK: BL &exp2f
  CHECK: $d0 = COPY [[COPY]]
  CHECK: BL &exp2
  CHECK: $q0 = COPY [[ANYEXT]]
  CHECK: BL &exp2l
  )";

  // Check
  EXPECT_TRUE(CheckMachineFunction(*MF, CheckStr)) << *MF;
}

TEST_F(AArch64GISelMITest, LibcallFRem) {
  setUp();
  if (!TM)
    return;

  // Declare your legalization info
  DefineLegalizerInfo(A, {
    getActionDefinitionsBuilder(G_FREM).libcallFor({s32, s64, s128});
  });

  LLT S32{LLT::scalar(32)};
  LLT S64{LLT::scalar(64)};
  LLT S128{LLT::scalar(128)};
  auto MIBTrunc = B.buildTrunc(S32, Copies[0]);
  auto MIBExt = B.buildAnyExt(S128, Copies[0]);

  auto MIBFRem32 = B.buildInstr(TargetOpcode::G_FREM, {S32}, {MIBTrunc});
  auto MIBFRem64 = B.buildInstr(TargetOpcode::G_FREM, {S64}, {Copies[0]});
  auto MIBFRem128 = B.buildInstr(TargetOpcode::G_FREM, {S128}, {MIBExt});

  AInfo Info(MF->getSubtarget());
  DummyGISelObserver Observer;
  LostDebugLocObserver DummyLocObserver("");
  LegalizerHelper Helper(*MF, Info, Observer, B);

  EXPECT_EQ(LegalizerHelper::LegalizeResult::Legalized,
            Helper.libcall(*MIBFRem32, DummyLocObserver));
  EXPECT_EQ(LegalizerHelper::LegalizeResult::Legalized,
            Helper.libcall(*MIBFRem64, DummyLocObserver));
  EXPECT_EQ(LegalizerHelper::LegalizeResult::Legalized,
            Helper.libcall(*MIBFRem128, DummyLocObserver));

  const auto *CheckStr = R"(
  CHECK: [[COPY:%[0-9]+]]:_(s64) = COPY
  CHECK: [[TRUNC:%[0-9]+]]:_(s32) = G_TRUNC
  CHECK: [[ANYEXT:%[0-9]+]]:_(s128) = G_ANYEXT
  CHECK: $s0 = COPY [[TRUNC]]
  CHECK: BL &fmodf
  CHECK: $d0 = COPY [[COPY]]
  CHECK: BL &fmod
  CHECK: $q0 = COPY [[ANYEXT]]
  CHECK: BL &fmodl
  )";

  // Check
  EXPECT_TRUE(CheckMachineFunction(*MF, CheckStr)) << *MF;
}

TEST_F(AArch64GISelMITest, LibcallFPow) {
  setUp();
  if (!TM)
    return;

  // Declare your legalization info
  DefineLegalizerInfo(A, {
    getActionDefinitionsBuilder(G_FPOW).libcallFor({s32, s64, s128});
  });

  LLT S32{LLT::scalar(32)};
  LLT S64{LLT::scalar(64)};
  LLT S128{LLT::scalar(128)};
  auto MIBTrunc = B.buildTrunc(S32, Copies[0]);
  auto MIBExt = B.buildAnyExt(S128, Copies[0]);

  auto MIBPow32 = B.buildInstr(TargetOpcode::G_FPOW, {S32}, {MIBTrunc});
  auto MIBPow64 = B.buildInstr(TargetOpcode::G_FPOW, {S64}, {Copies[0]});
  auto MIBPow128 = B.buildInstr(TargetOpcode::G_FPOW, {S128}, {MIBExt});

  AInfo Info(MF->getSubtarget());
  DummyGISelObserver Observer;
  LostDebugLocObserver DummyLocObserver("");
  LegalizerHelper Helper(*MF, Info, Observer, B);

  EXPECT_EQ(LegalizerHelper::LegalizeResult::Legalized,
            Helper.libcall(*MIBPow32, DummyLocObserver));
  EXPECT_EQ(LegalizerHelper::LegalizeResult::Legalized,
            Helper.libcall(*MIBPow64, DummyLocObserver));
  EXPECT_EQ(LegalizerHelper::LegalizeResult::Legalized,
            Helper.libcall(*MIBPow128, DummyLocObserver));

  const auto *CheckStr = R"(
  CHECK: [[COPY:%[0-9]+]]:_(s64) = COPY
  CHECK: [[TRUNC:%[0-9]+]]:_(s32) = G_TRUNC
  CHECK: [[ANYEXT:%[0-9]+]]:_(s128) = G_ANYEXT
  CHECK: $s0 = COPY [[TRUNC]]
  CHECK: BL &powf
  CHECK: $d0 = COPY [[COPY]]
  CHECK: BL &pow
  CHECK: $q0 = COPY [[ANYEXT]]
  CHECK: BL &powl
  )";

  // Check
  EXPECT_TRUE(CheckMachineFunction(*MF, CheckStr)) << *MF;
}

TEST_F(AArch64GISelMITest, LibcallFMa) {
  setUp();
  if (!TM)
    return;

  // Declare your legalization info
  DefineLegalizerInfo(A, {
    getActionDefinitionsBuilder(G_FMA).libcallFor({s32, s64, s128});
  });

  LLT S32{LLT::scalar(32)};
  LLT S64{LLT::scalar(64)};
  LLT S128{LLT::scalar(128)};
  auto MIBTrunc = B.buildTrunc(S32, Copies[0]);
  auto MIBExt = B.buildAnyExt(S128, Copies[0]);

  auto MIBMa32 = B.buildInstr(TargetOpcode::G_FMA, {S32}, {MIBTrunc, MIBTrunc});
  auto MIBMa64 =
      B.buildInstr(TargetOpcode::G_FMA, {S64}, {Copies[0], Copies[0]});
  auto MIBMa128 = B.buildInstr(TargetOpcode::G_FMA, {S128}, {MIBExt, MIBExt});

  AInfo Info(MF->getSubtarget());
  DummyGISelObserver Observer;
  LostDebugLocObserver DummyLocObserver("");
  LegalizerHelper Helper(*MF, Info, Observer, B);

  EXPECT_EQ(LegalizerHelper::LegalizeResult::Legalized,
            Helper.libcall(*MIBMa32, DummyLocObserver));
  EXPECT_EQ(LegalizerHelper::LegalizeResult::Legalized,
            Helper.libcall(*MIBMa64, DummyLocObserver));
  EXPECT_EQ(LegalizerHelper::LegalizeResult::Legalized,
            Helper.libcall(*MIBMa128, DummyLocObserver));

  const auto *CheckStr = R"(
  CHECK: [[COPY:%[0-9]+]]:_(s64) = COPY
  CHECK: [[TRUNC:%[0-9]+]]:_(s32) = G_TRUNC
  CHECK: [[ANYEXT:%[0-9]+]]:_(s128) = G_ANYEXT
  CHECK: $s0 = COPY [[TRUNC]]
  CHECK: BL &fmaf
  CHECK: $d0 = COPY [[COPY]]
  CHECK: BL &fma
  CHECK: $q0 = COPY [[ANYEXT]]
  CHECK: BL &fmal
  )";

  // Check
  EXPECT_TRUE(CheckMachineFunction(*MF, CheckStr)) << *MF;
}

TEST_F(AArch64GISelMITest, LibcallFCeil) {
  setUp();
  if (!TM)
    return;

  // Declare your legalization info
  DefineLegalizerInfo(A, {
    getActionDefinitionsBuilder(G_FCEIL).libcallFor({s32, s64, s128});
  });

  LLT S32{LLT::scalar(32)};
  LLT S64{LLT::scalar(64)};
  LLT S128{LLT::scalar(128)};
  auto MIBTrunc = B.buildTrunc(S32, Copies[0]);
  auto MIBExt = B.buildAnyExt(S128, Copies[0]);

  auto MIBCeil32 = B.buildInstr(TargetOpcode::G_FCEIL, {S32}, {MIBTrunc});
  auto MIBCeil64 = B.buildInstr(TargetOpcode::G_FCEIL, {S64}, {Copies[0]});
  auto MIBCeil128 = B.buildInstr(TargetOpcode::G_FCEIL, {S128}, {MIBExt});

  AInfo Info(MF->getSubtarget());
  DummyGISelObserver Observer;
  LegalizerHelper Helper(*MF, Info, Observer, B);
  LostDebugLocObserver DummyLocObserver("");

  EXPECT_EQ(LegalizerHelper::LegalizeResult::Legalized,
            Helper.libcall(*MIBCeil32, DummyLocObserver));
  EXPECT_EQ(LegalizerHelper::LegalizeResult::Legalized,
            Helper.libcall(*MIBCeil64, DummyLocObserver));
  EXPECT_EQ(LegalizerHelper::LegalizeResult::Legalized,
            Helper.libcall(*MIBCeil128, DummyLocObserver));

  const auto *CheckStr = R"(
  CHECK: [[COPY:%[0-9]+]]:_(s64) = COPY
  CHECK: [[TRUNC:%[0-9]+]]:_(s32) = G_TRUNC
  CHECK: [[ANYEXT:%[0-9]+]]:_(s128) = G_ANYEXT
  CHECK: $s0 = COPY [[TRUNC]]
  CHECK: BL &ceilf
  CHECK: $d0 = COPY [[COPY]]
  CHECK: BL &ceil
  CHECK: $q0 = COPY [[ANYEXT]]
  CHECK: BL &ceill
  )";

  // Check
  EXPECT_TRUE(CheckMachineFunction(*MF, CheckStr)) << *MF;
}

TEST_F(AArch64GISelMITest, LibcallFFloor) {
  setUp();
  if (!TM)
    return;

  // Declare your legalization info
  DefineLegalizerInfo(A, {
    getActionDefinitionsBuilder(G_FFLOOR).libcallFor({s32, s64, s128});
  });

  LLT S32{LLT::scalar(32)};
  LLT S64{LLT::scalar(64)};
  LLT S128{LLT::scalar(128)};
  auto MIBTrunc = B.buildTrunc(S32, Copies[0]);
  auto MIBExt = B.buildAnyExt(S128, Copies[0]);

  auto MIBFloor32 = B.buildInstr(TargetOpcode::G_FFLOOR, {S32}, {MIBTrunc});
  auto MIBFloor64 = B.buildInstr(TargetOpcode::G_FFLOOR, {S64}, {Copies[0]});
  auto MIBFloor128 = B.buildInstr(TargetOpcode::G_FFLOOR, {S128}, {MIBExt});

  AInfo Info(MF->getSubtarget());
  DummyGISelObserver Observer;
  LegalizerHelper Helper(*MF, Info, Observer, B);
  LostDebugLocObserver DummyLocObserver("");

  EXPECT_EQ(LegalizerHelper::LegalizeResult::Legalized,
            Helper.libcall(*MIBFloor32, DummyLocObserver));
  EXPECT_EQ(LegalizerHelper::LegalizeResult::Legalized,
            Helper.libcall(*MIBFloor64, DummyLocObserver));
  EXPECT_EQ(LegalizerHelper::LegalizeResult::Legalized,
            Helper.libcall(*MIBFloor128, DummyLocObserver));

  const auto *CheckStr = R"(
  CHECK: [[COPY:%[0-9]+]]:_(s64) = COPY
  CHECK: [[TRUNC:%[0-9]+]]:_(s32) = G_TRUNC
  CHECK: [[ANYEXT:%[0-9]+]]:_(s128) = G_ANYEXT
  CHECK: $s0 = COPY [[TRUNC]]
  CHECK: BL &floorf
  CHECK: $d0 = COPY [[COPY]]
  CHECK: BL &floor
  CHECK: $q0 = COPY [[ANYEXT]]
  CHECK: BL &floorl
  )";

  // Check
  EXPECT_TRUE(CheckMachineFunction(*MF, CheckStr)) << *MF;
}

TEST_F(AArch64GISelMITest, LibcallFMinNum) {
  setUp();
  if (!TM)
    return;

  // Declare your legalization info
  DefineLegalizerInfo(A, {
    getActionDefinitionsBuilder(G_FMINNUM).libcallFor({s32, s64, s128});
  });

  LLT S32{LLT::scalar(32)};
  LLT S64{LLT::scalar(64)};
  LLT S128{LLT::scalar(128)};
  auto MIBTrunc = B.buildTrunc(S32, Copies[0]);
  auto MIBExt = B.buildAnyExt(S128, Copies[0]);

  auto MIBMin32 = B.buildFMinNum(S32, MIBTrunc, MIBTrunc);
  auto MIBMin64 = B.buildFMinNum(S64, Copies[0], Copies[0]);
  auto MIBMin128 = B.buildFMinNum(S128, MIBExt, MIBExt);

  AInfo Info(MF->getSubtarget());
  DummyGISelObserver Observer;
  LegalizerHelper Helper(*MF, Info, Observer, B);
  LostDebugLocObserver DummyLocObserver("");

  EXPECT_EQ(LegalizerHelper::LegalizeResult::Legalized,
            Helper.libcall(*MIBMin32, DummyLocObserver));
  EXPECT_EQ(LegalizerHelper::LegalizeResult::Legalized,
            Helper.libcall(*MIBMin64, DummyLocObserver));
  EXPECT_EQ(LegalizerHelper::LegalizeResult::Legalized,
            Helper.libcall(*MIBMin128, DummyLocObserver));

  const auto *CheckStr = R"(
  CHECK: [[COPY:%[0-9]+]]:_(s64) = COPY
  CHECK: [[TRUNC:%[0-9]+]]:_(s32) = G_TRUNC
  CHECK: [[ANYEXT:%[0-9]+]]:_(s128) = G_ANYEXT
  CHECK: $s0 = COPY [[TRUNC]]
  CHECK: $s1 = COPY [[TRUNC]]
  CHECK: BL &fminf
  CHECK: $d0 = COPY [[COPY]]
  CHECK: $d1 = COPY [[COPY]]
  CHECK: BL &fmin
  CHECK: $q0 = COPY [[ANYEXT]]
  CHECK: $q1 = COPY [[ANYEXT]]
  CHECK: BL &fminl
  )";

  // Check
  EXPECT_TRUE(CheckMachineFunction(*MF, CheckStr)) << *MF;
}

TEST_F(AArch64GISelMITest, LibcallFMaxNum) {
  setUp();
  if (!TM)
    return;

  // Declare your legalization info
  DefineLegalizerInfo(A, {
    getActionDefinitionsBuilder(G_FMAXNUM).libcallFor({s32, s64, s128});
  });

  LLT S32{LLT::scalar(32)};
  LLT S64{LLT::scalar(64)};
  LLT S128{LLT::scalar(128)};
  auto MIBTrunc = B.buildTrunc(S32, Copies[0]);
  auto MIBExt = B.buildAnyExt(S128, Copies[0]);

  auto MIBMax32 = B.buildFMaxNum(S32, MIBTrunc, MIBTrunc);
  auto MIBMax64 = B.buildFMaxNum(S64, Copies[0], Copies[0]);
  auto MIBMax128 = B.buildFMaxNum(S128, MIBExt, MIBExt);

  AInfo Info(MF->getSubtarget());
  DummyGISelObserver Observer;
  LegalizerHelper Helper(*MF, Info, Observer, B);
  LostDebugLocObserver DummyLocObserver("");

  EXPECT_EQ(LegalizerHelper::LegalizeResult::Legalized,
            Helper.libcall(*MIBMax32, DummyLocObserver));
  EXPECT_EQ(LegalizerHelper::LegalizeResult::Legalized,
            Helper.libcall(*MIBMax64, DummyLocObserver));
  EXPECT_EQ(LegalizerHelper::LegalizeResult::Legalized,
            Helper.libcall(*MIBMax128, DummyLocObserver));

  const auto *CheckStr = R"(
  CHECK: [[COPY:%[0-9]+]]:_(s64) = COPY
  CHECK: [[TRUNC:%[0-9]+]]:_(s32) = G_TRUNC
  CHECK: [[ANYEXT:%[0-9]+]]:_(s128) = G_ANYEXT
  CHECK: $s0 = COPY [[TRUNC]]
  CHECK: $s1 = COPY [[TRUNC]]
  CHECK: BL &fmaxf
  CHECK: $d0 = COPY [[COPY]]
  CHECK: $d1 = COPY [[COPY]]
  CHECK: BL &fmax
  CHECK: $q0 = COPY [[ANYEXT]]
  CHECK: $q1 = COPY [[ANYEXT]]
  CHECK: BL &fmaxl
  )";

  // Check
  EXPECT_TRUE(CheckMachineFunction(*MF, CheckStr)) << *MF;
}

TEST_F(AArch64GISelMITest, LibcallFSqrt) {
  setUp();
  if (!TM)
    return;

  // Declare your legalization info
  DefineLegalizerInfo(A, {
    getActionDefinitionsBuilder(G_FSQRT).libcallFor({s32, s64, s128});
  });

  LLT S32{LLT::scalar(32)};
  LLT S64{LLT::scalar(64)};
  LLT S128{LLT::scalar(128)};
  auto MIBTrunc = B.buildTrunc(S32, Copies[0]);
  auto MIBExt = B.buildAnyExt(S128, Copies[0]);

  auto MIBSqrt32 = B.buildInstr(TargetOpcode::G_FSQRT, {S32}, {MIBTrunc});
  auto MIBSqrt64 = B.buildInstr(TargetOpcode::G_FSQRT, {S64}, {Copies[0]});
  auto MIBSqrt128 = B.buildInstr(TargetOpcode::G_FSQRT, {S128}, {MIBExt});

  AInfo Info(MF->getSubtarget());
  DummyGISelObserver Observer;
  LegalizerHelper Helper(*MF, Info, Observer, B);
  LostDebugLocObserver DummyLocObserver("");

  EXPECT_EQ(LegalizerHelper::LegalizeResult::Legalized,
            Helper.libcall(*MIBSqrt32, DummyLocObserver));
  EXPECT_EQ(LegalizerHelper::LegalizeResult::Legalized,
            Helper.libcall(*MIBSqrt64, DummyLocObserver));
  EXPECT_EQ(LegalizerHelper::LegalizeResult::Legalized,
            Helper.libcall(*MIBSqrt128, DummyLocObserver));

  const auto *CheckStr = R"(
  CHECK: [[COPY:%[0-9]+]]:_(s64) = COPY
  CHECK: [[TRUNC:%[0-9]+]]:_(s32) = G_TRUNC
  CHECK: [[ANYEXT:%[0-9]+]]:_(s128) = G_ANYEXT
  CHECK: $s0 = COPY [[TRUNC]]
  CHECK: BL &sqrtf
  CHECK: $d0 = COPY [[COPY]]
  CHECK: BL &sqrt
  CHECK: $q0 = COPY [[ANYEXT]]
  CHECK: BL &sqrtl
  )";

  // Check
  EXPECT_TRUE(CheckMachineFunction(*MF, CheckStr)) << *MF;
}

TEST_F(AArch64GISelMITest, LibcallFRint) {
  setUp();
  if (!TM)
    return;

  // Declare your legalization info
  DefineLegalizerInfo(A, {
    getActionDefinitionsBuilder(G_FRINT).libcallFor({s32, s64, s128});
  });

  LLT S32{LLT::scalar(32)};
  LLT S64{LLT::scalar(64)};
  LLT S128{LLT::scalar(128)};
  auto MIBTrunc = B.buildTrunc(S32, Copies[0]);
  auto MIBExt = B.buildAnyExt(S128, Copies[0]);

  auto MIBRint32 = B.buildInstr(TargetOpcode::G_FRINT, {S32}, {MIBTrunc});
  auto MIBRint64 = B.buildInstr(TargetOpcode::G_FRINT, {S64}, {Copies[0]});
  auto MIBRint128 = B.buildInstr(TargetOpcode::G_FRINT, {S128}, {MIBExt});

  AInfo Info(MF->getSubtarget());
  DummyGISelObserver Observer;
  LegalizerHelper Helper(*MF, Info, Observer, B);
  LostDebugLocObserver DummyLocObserver("");

  EXPECT_EQ(LegalizerHelper::LegalizeResult::Legalized,
            Helper.libcall(*MIBRint32, DummyLocObserver));
  EXPECT_EQ(LegalizerHelper::LegalizeResult::Legalized,
            Helper.libcall(*MIBRint64, DummyLocObserver));
  EXPECT_EQ(LegalizerHelper::LegalizeResult::Legalized,
            Helper.libcall(*MIBRint128, DummyLocObserver));

  const auto *CheckStr = R"(
  CHECK: [[COPY:%[0-9]+]]:_(s64) = COPY
  CHECK: [[TRUNC:%[0-9]+]]:_(s32) = G_TRUNC
  CHECK: [[ANYEXT:%[0-9]+]]:_(s128) = G_ANYEXT
  CHECK: $s0 = COPY [[TRUNC]]
  CHECK: BL &rintf
  CHECK: $d0 = COPY [[COPY]]
  CHECK: BL &rint
  CHECK: $q0 = COPY [[ANYEXT]]
  CHECK: BL &rintl
  )";

  // Check
  EXPECT_TRUE(CheckMachineFunction(*MF, CheckStr)) << *MF;
}

TEST_F(AArch64GISelMITest, LibcallFNearbyInt) {
  setUp();
  if (!TM)
    return;

  // Declare your legalization info
  DefineLegalizerInfo(A, {
    getActionDefinitionsBuilder(G_FNEARBYINT).libcallFor({s32, s64, s128});
  });

  LLT S32{LLT::scalar(32)};
  LLT S64{LLT::scalar(64)};
  LLT S128{LLT::scalar(128)};
  auto MIBTrunc = B.buildTrunc(S32, Copies[0]);
  auto MIBExt = B.buildAnyExt(S128, Copies[0]);

  auto MIBNearbyInt32 =
      B.buildInstr(TargetOpcode::G_FNEARBYINT, {S32}, {MIBTrunc});
  auto MIBNearbyInt64 =
      B.buildInstr(TargetOpcode::G_FNEARBYINT, {S64}, {Copies[0]});
  auto MIBNearbyInt128 =
      B.buildInstr(TargetOpcode::G_FNEARBYINT, {S128}, {MIBExt});

  AInfo Info(MF->getSubtarget());
  DummyGISelObserver Observer;
  LegalizerHelper Helper(*MF, Info, Observer, B);
  LostDebugLocObserver DummyLocObserver("");

  EXPECT_EQ(LegalizerHelper::LegalizeResult::Legalized,
            Helper.libcall(*MIBNearbyInt32, DummyLocObserver));
  EXPECT_EQ(LegalizerHelper::LegalizeResult::Legalized,
            Helper.libcall(*MIBNearbyInt64, DummyLocObserver));
  EXPECT_EQ(LegalizerHelper::LegalizeResult::Legalized,
            Helper.libcall(*MIBNearbyInt128, DummyLocObserver));

  const auto *CheckStr = R"(
  CHECK: [[COPY:%[0-9]+]]:_(s64) = COPY
  CHECK: [[TRUNC:%[0-9]+]]:_(s32) = G_TRUNC
  CHECK: [[ANYEXT:%[0-9]+]]:_(s128) = G_ANYEXT
  CHECK: $s0 = COPY [[TRUNC]]
  CHECK: BL &nearbyintf
  CHECK: $d0 = COPY [[COPY]]
  CHECK: BL &nearbyint
  CHECK: $q0 = COPY [[ANYEXT]]
  CHECK: BL &nearbyintl
  )";

  // Check
  EXPECT_TRUE(CheckMachineFunction(*MF, CheckStr)) << *MF;
}

TEST_F(AArch64GISelMITest, NarrowScalarExtract) {
  setUp();
  if (!TM)
    return;

  // Declare your legalization info
  DefineLegalizerInfo(A, {
    getActionDefinitionsBuilder(G_UNMERGE_VALUES).legalFor({{s32, s64}});
    getActionDefinitionsBuilder(G_EXTRACT).legalForTypeWithAnyImm({{s16, s32}});
  });

  LLT S16{LLT::scalar(16)};
  LLT S32{LLT::scalar(32)};

  auto MIBExtractS32 = B.buildExtract(S32, Copies[1], 32);
  auto MIBExtractS16 = B.buildExtract(S16, Copies[1], 0);

  AInfo Info(MF->getSubtarget());
  DummyGISelObserver Observer;
  LegalizerHelper Helper(*MF, Info, Observer, B);

  EXPECT_EQ(LegalizerHelper::LegalizeResult::Legalized,
            Helper.narrowScalar(*MIBExtractS32, 1, S32));

  EXPECT_EQ(LegalizerHelper::LegalizeResult::Legalized,
            Helper.narrowScalar(*MIBExtractS16, 1, S32));

  const auto *CheckStr = R"(
  CHECK: [[UV:%[0-9]+]]:_(s32), [[UV1:%[0-9]+]]:_(s32) = G_UNMERGE_VALUES
  CHECK: [[COPY:%[0-9]+]]:_(s32) = COPY [[UV1]]
  CHECK: [[UV3:%[0-9]+]]:_(s32), [[UV4:%[0-9]+]]:_(s32) = G_UNMERGE_VALUES
  CHECK: [[EXTR:%[0-9]+]]:_(s16) = G_EXTRACT [[UV3]]:_(s32), 0
  CHECK: [[COPY:%[0-9]+]]:_(s16) = COPY [[EXTR]]
  )";

  // Check
  EXPECT_TRUE(CheckMachineFunction(*MF, CheckStr)) << *MF;
}

TEST_F(AArch64GISelMITest, LowerInsert) {
  setUp();
  if (!TM)
    return;

  // Declare your legalization info
  DefineLegalizerInfo(A, { getActionDefinitionsBuilder(G_INSERT).lower(); });

  LLT S32{LLT::scalar(32)};
  LLT S64{LLT::scalar(64)};
  LLT P0{LLT::pointer(0, 64)};
  LLT P1{LLT::pointer(1, 32)};
  LLT V2S32{LLT::fixed_vector(2, 32)};

  auto TruncS32 = B.buildTrunc(S32, Copies[0]);
  auto IntToPtrP0 = B.buildIntToPtr(P0, Copies[0]);
  auto IntToPtrP1 = B.buildIntToPtr(P1, TruncS32);
  auto BitcastV2S32 = B.buildBitcast(V2S32, Copies[0]);

  auto InsertS64S32 = B.buildInsert(S64, Copies[0], TruncS32, 0);
  auto InsertS64P1 = B.buildInsert(S64, Copies[0], IntToPtrP1, 8);
  auto InsertP0S32 = B.buildInsert(P0, IntToPtrP0, TruncS32, 16);
  auto InsertP0P1 = B.buildInsert(P0, IntToPtrP0, IntToPtrP1, 4);
  auto InsertV2S32S32 = B.buildInsert(V2S32, BitcastV2S32, TruncS32, 32);
  auto InsertV2S32P1 = B.buildInsert(V2S32, BitcastV2S32, IntToPtrP1, 0);

  AInfo Info(MF->getSubtarget());
  DummyGISelObserver Observer;
  LegalizerHelper Helper(*MF, Info, Observer, B);

  EXPECT_EQ(LegalizerHelper::LegalizeResult::Legalized,
            Helper.lower(*InsertS64S32, 0, LLT{}));

  EXPECT_EQ(LegalizerHelper::LegalizeResult::Legalized,
            Helper.lower(*InsertS64P1, 0, LLT{}));

  EXPECT_EQ(LegalizerHelper::LegalizeResult::Legalized,
            Helper.lower(*InsertP0S32, 0, LLT{}));

  EXPECT_EQ(LegalizerHelper::LegalizeResult::Legalized,
            Helper.lower(*InsertP0P1, 0, LLT{}));

  EXPECT_EQ(LegalizerHelper::LegalizeResult::Legalized,
            Helper.lower(*InsertV2S32S32, 0, LLT{}));

  EXPECT_EQ(LegalizerHelper::LegalizeResult::UnableToLegalize,
            Helper.lower(*InsertV2S32P1, 0, LLT{}));

  const auto *CheckStr = R"(
  CHECK: [[S64:%[0-9]+]]:_(s64) = COPY
  CHECK: [[S32:%[0-9]+]]:_(s32) = G_TRUNC [[S64]]
  CHECK: [[P0:%[0-9]+]]:_(p0) = G_INTTOPTR [[S64]]
  CHECK: [[P1:%[0-9]+]]:_(p1) = G_INTTOPTR [[S32]]
  CHECK: [[V2S32:%[0-9]+]]:_(<2 x s32>) = G_BITCAST [[S64]]
  CHECK: [[ZEXT:%[0-9]+]]:_(s64) = G_ZEXT [[S32]]
  CHECK: [[C:%[0-9]+]]:_(s64) = G_CONSTANT
  CHECK: [[AND:%[0-9]+]]:_(s64) = G_AND [[S64]]:_, [[C]]:_
  CHECK: [[OR:%[0-9]+]]:_(s64) = G_OR [[AND]]:_, [[ZEXT]]:_

  CHECK: [[PTRTOINT:%[0-9]+]]:_(s32) = G_PTRTOINT [[P1]]
  CHECK: [[ZEXT:%[0-9]+]]:_(s64) = G_ZEXT [[PTRTOINT]]
  CHECK: [[C:%[0-9]+]]:_(s64) = G_CONSTANT
  CHECK: [[SHL:%[0-9]+]]:_(s64) = G_SHL [[ZEXT]]:_, [[C]]:_(s64)
  CHECK: [[C:%[0-9]+]]:_(s64) = G_CONSTANT
  CHECK: [[AND:%[0-9]+]]:_(s64) = G_AND [[S64]]:_, [[C]]:_
  CHECK: [[OR:%[0-9]+]]:_(s64) = G_OR [[AND]]:_, [[SHL]]:_

  CHECK: [[PTRTOINT:%[0-9]+]]:_(s64) = G_PTRTOINT [[P0]]
  CHECK: [[ZEXT:%[0-9]+]]:_(s64) = G_ZEXT [[S32]]
  CHECK: [[C:%[0-9]+]]:_(s64) = G_CONSTANT
  CHECK: [[SHL:%[0-9]+]]:_(s64) = G_SHL [[ZEXT]]:_, [[C]]:_(s64)
  CHECK: [[C:%[0-9]+]]:_(s64) = G_CONSTANT
  CHECK: [[AND:%[0-9]+]]:_(s64) = G_AND [[PTRTOINT]]:_, [[C]]:_
  CHECK: [[OR:%[0-9]+]]:_(s64) = G_OR [[AND]]:_, [[SHL]]:_
  CHECK: [[INTTOPTR:%[0-9]+]]:_(p0) = G_INTTOPTR [[OR]]

  CHECK: [[PTRTOINT:%[0-9]+]]:_(s64) = G_PTRTOINT [[P0]]
  CHECK: [[PTRTOINT1:%[0-9]+]]:_(s32) = G_PTRTOINT [[P1]]
  CHECK: [[ZEXT:%[0-9]+]]:_(s64) = G_ZEXT [[PTRTOINT1]]
  CHECK: [[C:%[0-9]+]]:_(s64) = G_CONSTANT
  CHECK: [[SHL:%[0-9]+]]:_(s64) = G_SHL [[ZEXT]]:_, [[C]]:_(s64)
  CHECK: [[C:%[0-9]+]]:_(s64) = G_CONSTANT
  CHECK: [[AND:%[0-9]+]]:_(s64) = G_AND [[PTRTOINT]]:_, [[C]]:_
  CHECK: [[OR:%[0-9]+]]:_(s64) = G_OR [[AND]]:_, [[SHL]]:_
  CHECK: [[INTTOPTR:%[0-9]+]]:_(p0) = G_INTTOPTR [[OR]]

  CHECK: [[V2S32_E0:%[0-9]+]]:_(s32), [[V2S32_E1:%[0-9]+]]:_(s32) = G_UNMERGE_VALUES [[V2S32]]
  CHECK: [[BV:%[0-9]+]]:_(<2 x s32>) = G_BUILD_VECTOR [[V2S32_E0]]:_(s32), [[S32]]:_(s32)
  )";

  // Check
  EXPECT_TRUE(CheckMachineFunction(*MF, CheckStr)) << *MF;
}

// Test lowering of G_FFLOOR
TEST_F(AArch64GISelMITest, LowerFFloor) {
  setUp();
  if (!TM)
    return;

  // Declare your legalization info
  DefineLegalizerInfo(A, {});
  // Build Instr
  auto Floor = B.buildFFloor(LLT::scalar(64), Copies[0], MachineInstr::MIFlag::FmNoInfs);
  AInfo Info(MF->getSubtarget());
  DummyGISelObserver Observer;
  LegalizerHelper Helper(*MF, Info, Observer, B);
  // Perform Legalization
  EXPECT_EQ(LegalizerHelper::LegalizeResult::Legalized,
            Helper.lower(*Floor, 0, LLT()));

  auto CheckStr = R"(
  CHECK: [[COPY:%[0-9]+]]:_(s64) = COPY
  CHECK: [[TRUNC:%[0-9]+]]:_(s64) = ninf G_INTRINSIC_TRUNC [[COPY]]
  CHECK: [[ZERO:%[0-9]+]]:_(s64) = G_FCONSTANT double 0.000000e+00
  CHECK: [[CMP0:%[0-9]+]]:_(s1) = ninf G_FCMP floatpred(olt), [[COPY]]:_(s64), [[ZERO]]:_
  CHECK: [[CMP1:%[0-9]+]]:_(s1) = ninf G_FCMP floatpred(one), [[COPY]]:_(s64), [[TRUNC]]:_
  CHECK: [[AND:%[0-9]+]]:_(s1) = G_AND [[CMP0]]:_, [[CMP1]]:_
  CHECK: [[ITOFP:%[0-9]+]]:_(s64) = G_SITOFP [[AND]]
  = ninf G_FADD [[TRUNC]]:_, [[ITOFP]]:_
  )";

  // Check
  EXPECT_TRUE(CheckMachineFunction(*MF, CheckStr)) << *MF;
}

// Test lowering of G_BSWAP
TEST_F(AArch64GISelMITest, LowerBSWAP) {
  setUp();
  if (!TM)
    return;

  DefineLegalizerInfo(A, {});

  // Make sure vector lowering doesn't assert.
  auto Cast = B.buildBitcast(LLT::fixed_vector(2, 32), Copies[0]);
  auto BSwap = B.buildBSwap(LLT::fixed_vector(2, 32), Cast);
  AInfo Info(MF->getSubtarget());
  DummyGISelObserver Observer;
  LegalizerHelper Helper(*MF, Info, Observer, B);
  // Perform Legalization
  EXPECT_EQ(LegalizerHelper::LegalizeResult::Legalized,
            Helper.lower(*BSwap, 0, LLT()));

  auto CheckStr = R"(
  CHECK: [[COPY:%[0-9]+]]:_(s64) = COPY
  CHECK: [[VEC:%[0-9]+]]:_(<2 x s32>) = G_BITCAST [[COPY]]
  CHECK: [[K24:%[0-9]+]]:_(s32) = G_CONSTANT i32 24
  CHECK: [[SPLAT24:%[0-9]+]]:_(<2 x s32>) = G_BUILD_VECTOR [[K24]]:_(s32), [[K24]]:_(s32)
  CHECK: [[SHL0:%[0-9]+]]:_(<2 x s32>) = G_SHL [[VEC]]:_, [[SPLAT24]]
  CHECK: [[SHR0:%[0-9]+]]:_(<2 x s32>) = G_LSHR [[VEC]]:_, [[SPLAT24]]
  CHECK: [[OR0:%[0-9]+]]:_(<2 x s32>) = G_OR [[SHR0]]:_, [[SHL0]]:_
  CHECK: [[KMASK:%[0-9]+]]:_(s32) = G_CONSTANT i32 65280
  CHECK: [[SPLATMASK:%[0-9]+]]:_(<2 x s32>) = G_BUILD_VECTOR [[KMASK]]:_(s32), [[KMASK]]:_(s32)
  CHECK: [[K8:%[0-9]+]]:_(s32) = G_CONSTANT i32 8
  CHECK: [[SPLAT8:%[0-9]+]]:_(<2 x s32>) = G_BUILD_VECTOR [[K8]]:_(s32), [[K8]]:_(s32)
  CHECK: [[AND0:%[0-9]+]]:_(<2 x s32>) = G_AND [[VEC]]:_, [[SPLATMASK]]:_
  CHECK: [[SHL1:%[0-9]+]]:_(<2 x s32>) = G_SHL [[AND0]]:_, [[SPLAT8]]
  CHECK: [[OR1:%[0-9]+]]:_(<2 x s32>) = G_OR [[OR0]]:_, [[SHL1]]:_
  CHECK: [[SHR1:%[0-9]+]]:_(<2 x s32>) = G_LSHR [[VEC]]:_, [[SPLAT8]]
  CHECK: [[AND1:%[0-9]+]]:_(<2 x s32>) = G_AND [[SHR1]]:_, [[SPLATMASK]]:_
  CHECK: [[BSWAP:%[0-9]+]]:_(<2 x s32>) = G_OR [[OR1]]:_, [[AND1]]:_
  )";

  // Check
  EXPECT_TRUE(CheckMachineFunction(*MF, CheckStr)) << *MF;
}

// Test lowering of G_SDIVREM into G_SDIV and G_SREM
TEST_F(AArch64GISelMITest, LowerSDIVREM) {
  setUp();
  if (!TM)
    return;

  // Declare your legalization info
  DefineLegalizerInfo(
      A, { getActionDefinitionsBuilder(G_SDIVREM).lowerFor({s64}); });

  LLT S64{LLT::scalar(64)};

  // Build Instr
  auto SDivrem =
      B.buildInstr(TargetOpcode::G_SDIVREM, {S64, S64}, {Copies[0], Copies[1]});
  AInfo Info(MF->getSubtarget());
  DummyGISelObserver Observer;
  LegalizerHelper Helper(*MF, Info, Observer, B);
  // Perform Legalization
  EXPECT_EQ(LegalizerHelper::LegalizeResult::Legalized,
            Helper.lower(*SDivrem, 0, S64));

  const auto *CheckStr = R"(
  CHECK: [[DIV:%[0-9]+]]:_(s64) = G_SDIV %0:_, %1:_
  CHECK: [[REM:%[0-9]+]]:_(s64) = G_SREM %0:_, %1:_
  )";

  // Check
  EXPECT_TRUE(CheckMachineFunction(*MF, CheckStr)) << *MF;
}

// Test lowering of G_UDIVREM into G_UDIV and G_UREM
TEST_F(AArch64GISelMITest, LowerUDIVREM) {
  setUp();
  if (!TM)
    return;

  // Declare your legalization info
  DefineLegalizerInfo(
      A, { getActionDefinitionsBuilder(G_UDIVREM).lowerFor({s64}); });

  LLT S64{LLT::scalar(64)};

  // Build Instr
  auto UDivrem =
      B.buildInstr(TargetOpcode::G_UDIVREM, {S64, S64}, {Copies[0], Copies[1]});
  AInfo Info(MF->getSubtarget());
  DummyGISelObserver Observer;
  LegalizerHelper Helper(*MF, Info, Observer, B);
  // Perform Legalization
  EXPECT_EQ(LegalizerHelper::LegalizeResult::Legalized,
            Helper.lower(*UDivrem, 0, S64));

  const auto *CheckStr = R"(
  CHECK: [[DIV:%[0-9]+]]:_(s64) = G_UDIV %0:_, %1:_
  CHECK: [[REM:%[0-9]+]]:_(s64) = G_UREM %0:_, %1:_
  )";

  // Check
  EXPECT_TRUE(CheckMachineFunction(*MF, CheckStr)) << *MF;
}

// Test widening of G_UNMERGE_VALUES
TEST_F(AArch64GISelMITest, WidenUnmerge) {
  setUp();
  if (!TM)
    return;

  DefineLegalizerInfo(A, {});

  // Check that widening G_UNMERGE_VALUES to a larger type than the source type
  // works as expected
  LLT P0{LLT::pointer(0, 64)};
  LLT S32{LLT::scalar(32)};
  LLT S96{LLT::scalar(96)};

  auto IntToPtr = B.buildIntToPtr(P0, Copies[0]);
  auto UnmergePtr = B.buildUnmerge(S32, IntToPtr);
  auto UnmergeScalar = B.buildUnmerge(S32, Copies[0]);

  AInfo Info(MF->getSubtarget());
  DummyGISelObserver Observer;
  LegalizerHelper Helper(*MF, Info, Observer, B);

  // Perform Legalization
  EXPECT_EQ(LegalizerHelper::LegalizeResult::Legalized,
            Helper.widenScalar(*UnmergePtr, 0, S96));

  EXPECT_EQ(LegalizerHelper::LegalizeResult::Legalized,
            Helper.widenScalar(*UnmergeScalar, 0, S96));

  const auto *CheckStr = R"(
  CHECK: [[COPY:%[0-9]+]]:_(s64) = COPY
  CHECK: [[PTR:%[0-9]+]]:_(p0) = G_INTTOPTR [[COPY]]
  CHECK: [[INT:%[0-9]+]]:_(s64) = G_PTRTOINT [[PTR]]
  CHECK: [[ANYEXT:%[0-9]+]]:_(s96) = G_ANYEXT [[INT]]
  CHECK: [[TRUNC:%[0-9]+]]:_(s32) = G_TRUNC [[ANYEXT]]
  CHECK: [[C:%[0-9]+]]:_(s96) = G_CONSTANT i96 32
  CHECK: [[LSHR:%[0-9]+]]:_(s96) = G_LSHR [[ANYEXT]]:_, [[C]]
  CHECK: [[TRUNC:%[0-9]+]]:_(s32) = G_TRUNC [[LSHR]]
  CHECK: [[ANYEXT:%[0-9]+]]:_(s96) = G_ANYEXT [[COPY]]
  CHECK: [[TRUNC:%[0-9]+]]:_(s32) = G_TRUNC [[ANYEXT]]
  CHECK: [[C:%[0-9]+]]:_(s96) = G_CONSTANT i96 32
  CHECK: [[LSHR:%[0-9]+]]:_(s96) = G_LSHR [[ANYEXT]]:_, [[C]]
  CHECK: [[TRUNC1:%[0-9]+]]:_(s32) = G_TRUNC [[LSHR]]
  )";

  // Check
  EXPECT_TRUE(CheckMachineFunction(*MF, CheckStr)) << *MF;
}

TEST_F(AArch64GISelMITest, BitcastLoad) {
  setUp();
  if (!TM)
    return;

  LLT P0 = LLT::pointer(0, 64);
  LLT S32 = LLT::scalar(32);
  LLT V4S8 = LLT::fixed_vector(4, 8);
  auto Ptr = B.buildUndef(P0);

  DefineLegalizerInfo(A, {});

  MachineMemOperand *MMO = B.getMF().getMachineMemOperand(
      MachinePointerInfo(), MachineMemOperand::MOLoad, 4, Align(4));
  auto Load = B.buildLoad(V4S8, Ptr, *MMO);

  AInfo Info(MF->getSubtarget());
  DummyGISelObserver Observer;
  B.setInsertPt(*EntryMBB, Load->getIterator());
  LegalizerHelper Helper(*MF, Info, Observer, B);
  EXPECT_EQ(LegalizerHelper::LegalizeResult::Legalized,
            Helper.bitcast(*Load, 0, S32));

  auto CheckStr = R"(
  CHECK: [[PTR:%[0-9]+]]:_(p0) = G_IMPLICIT_DEF
  CHECK: [[LOAD:%[0-9]+]]:_(s32) = G_LOAD
  CHECK: [[CAST:%[0-9]+]]:_(<4 x s8>) = G_BITCAST [[LOAD]]

  )";

  // Check
  EXPECT_TRUE(CheckMachineFunction(*MF, CheckStr)) << *MF;
}

TEST_F(AArch64GISelMITest, BitcastStore) {
  setUp();
  if (!TM)
    return;

  LLT P0 = LLT::pointer(0, 64);
  LLT S32 = LLT::scalar(32);
  LLT V4S8 = LLT::fixed_vector(4, 8);
  auto Ptr = B.buildUndef(P0);

  DefineLegalizerInfo(A, {});

  MachineMemOperand *MMO = B.getMF().getMachineMemOperand(
      MachinePointerInfo(), MachineMemOperand::MOStore, 4, Align(4));
  auto Val = B.buildUndef(V4S8);
  auto Store = B.buildStore(Val, Ptr, *MMO);

  AInfo Info(MF->getSubtarget());
  DummyGISelObserver Observer;
  LegalizerHelper Helper(*MF, Info, Observer, B);
  B.setInsertPt(*EntryMBB, Store->getIterator());
  EXPECT_EQ(LegalizerHelper::LegalizeResult::Legalized,
            Helper.bitcast(*Store, 0, S32));

  auto CheckStr = R"(
  CHECK: [[VAL:%[0-9]+]]:_(<4 x s8>) = G_IMPLICIT_DEF
  CHECK: [[CAST:%[0-9]+]]:_(s32) = G_BITCAST [[VAL]]
  CHECK: G_STORE [[CAST]]
  )";

  // Check
  EXPECT_TRUE(CheckMachineFunction(*MF, CheckStr)) << *MF;
}

TEST_F(AArch64GISelMITest, BitcastSelect) {
  setUp();
  if (!TM)
    return;

  LLT S1 = LLT::scalar(1);
  LLT S32 = LLT::scalar(32);
  LLT V4S8 = LLT::fixed_vector(4, 8);

  DefineLegalizerInfo(A, {});

  auto Cond = B.buildUndef(S1);
  auto Val0 = B.buildConstant(V4S8, 123);
  auto Val1 = B.buildConstant(V4S8, 99);

  auto Select = B.buildSelect(V4S8, Cond, Val0, Val1);

  AInfo Info(MF->getSubtarget());
  DummyGISelObserver Observer;
  LegalizerHelper Helper(*MF, Info, Observer, B);
  B.setInsertPt(*EntryMBB, Select->getIterator());
  EXPECT_EQ(LegalizerHelper::LegalizeResult::Legalized,
            Helper.bitcast(*Select, 0, S32));

  auto CheckStr = R"(
  CHECK: [[VAL0:%[0-9]+]]:_(<4 x s8>) = G_BUILD_VECTOR
  CHECK: [[VAL1:%[0-9]+]]:_(<4 x s8>) = G_BUILD_VECTOR
  CHECK: [[CAST0:%[0-9]+]]:_(s32) = G_BITCAST [[VAL0]]
  CHECK: [[CAST1:%[0-9]+]]:_(s32) = G_BITCAST [[VAL1]]
  CHECK: [[SELECT:%[0-9]+]]:_(s32) = G_SELECT %{{[0-9]+}}:_(s1), [[CAST0]]:_, [[CAST1]]:_
  CHECK: [[CAST2:%[0-9]+]]:_(<4 x s8>) = G_BITCAST [[SELECT]]
  )";

  // Check
  EXPECT_TRUE(CheckMachineFunction(*MF, CheckStr)) << *MF;

  // Doesn't make sense
  auto VCond = B.buildUndef(LLT::fixed_vector(4, 1));
  auto VSelect = B.buildSelect(V4S8, VCond, Val0, Val1);

  B.setInsertPt(*EntryMBB, VSelect->getIterator());
  EXPECT_EQ(LegalizerHelper::LegalizeResult::UnableToLegalize,
            Helper.bitcast(*VSelect, 0, S32));
  EXPECT_EQ(LegalizerHelper::LegalizeResult::UnableToLegalize,
            Helper.bitcast(*VSelect, 1, LLT::scalar(4)));
}

TEST_F(AArch64GISelMITest, BitcastBitOps) {
  setUp();
  if (!TM)
    return;

  LLT S32 = LLT::scalar(32);
  LLT V4S8 = LLT::fixed_vector(4, 8);

  DefineLegalizerInfo(A, {});

  auto Val0 = B.buildConstant(V4S8, 123);
  auto Val1 = B.buildConstant(V4S8, 99);
  auto And = B.buildAnd(V4S8, Val0, Val1);
  auto Or = B.buildOr(V4S8, Val0, Val1);
  auto Xor = B.buildXor(V4S8, Val0, Val1);

  AInfo Info(MF->getSubtarget());
  DummyGISelObserver Observer;
  LegalizerHelper Helper(*MF, Info, Observer, B);
  B.setInsertPt(*EntryMBB, And->getIterator());
  EXPECT_EQ(LegalizerHelper::LegalizeResult::Legalized,
            Helper.bitcast(*And, 0, S32));

  B.setInsertPt(*EntryMBB, Or->getIterator());
  EXPECT_EQ(LegalizerHelper::LegalizeResult::Legalized,
            Helper.bitcast(*Or, 0, S32));

  B.setInsertPt(*EntryMBB, Xor->getIterator());
  EXPECT_EQ(LegalizerHelper::LegalizeResult::Legalized,
            Helper.bitcast(*Xor, 0, S32));

  auto CheckStr = R"(
  CHECK: [[VAL0:%[0-9]+]]:_(<4 x s8>) = G_BUILD_VECTOR
  CHECK: [[VAL1:%[0-9]+]]:_(<4 x s8>) = G_BUILD_VECTOR
  CHECK: [[CAST0:%[0-9]+]]:_(s32) = G_BITCAST [[VAL0]]
  CHECK: [[CAST1:%[0-9]+]]:_(s32) = G_BITCAST [[VAL1]]
  CHECK: [[AND:%[0-9]+]]:_(s32) = G_AND [[CAST0]]:_, [[CAST1]]:_
  CHECK: [[CAST_AND:%[0-9]+]]:_(<4 x s8>) = G_BITCAST [[AND]]
  CHECK: [[CAST2:%[0-9]+]]:_(s32) = G_BITCAST [[VAL0]]
  CHECK: [[CAST3:%[0-9]+]]:_(s32) = G_BITCAST [[VAL1]]
  CHECK: [[OR:%[0-9]+]]:_(s32) = G_OR [[CAST2]]:_, [[CAST3]]:_
  CHECK: [[CAST_OR:%[0-9]+]]:_(<4 x s8>) = G_BITCAST [[OR]]
  CHECK: [[CAST4:%[0-9]+]]:_(s32) = G_BITCAST [[VAL0]]
  CHECK: [[CAST5:%[0-9]+]]:_(s32) = G_BITCAST [[VAL1]]
  CHECK: [[XOR:%[0-9]+]]:_(s32) = G_XOR [[CAST4]]:_, [[CAST5]]:_
  CHECK: [[CAST_XOR:%[0-9]+]]:_(<4 x s8>) = G_BITCAST [[XOR]]
  )";

  // Check
  EXPECT_TRUE(CheckMachineFunction(*MF, CheckStr)) << *MF;
}

TEST_F(AArch64GISelMITest, CreateLibcall) {
  setUp();
  if (!TM)
    return;

  DefineLegalizerInfo(A, {});

  AInfo Info(MF->getSubtarget());
  DummyGISelObserver Observer;

  LLVMContext &Ctx = MF->getFunction().getContext();
  auto *RetTy = Type::getVoidTy(Ctx);

  EXPECT_EQ(LegalizerHelper::LegalizeResult::Legalized,
            createLibcall(B, "abort", {{}, RetTy, 0}, {}, CallingConv::C));

  auto CheckStr = R"(
  CHECK: ADJCALLSTACKDOWN 0, 0, implicit-def $sp, implicit $sp
  CHECK: BL &abort
  CHECK: ADJCALLSTACKUP 0, 0, implicit-def $sp, implicit $sp
  )";

  // Check
  EXPECT_TRUE(CheckMachineFunction(*MF, CheckStr)) << *MF;
}

// Test narrowing of G_IMPLICIT_DEF
TEST_F(AArch64GISelMITest, NarrowImplicitDef) {
  setUp();
  if (!TM)
    return;

  DefineLegalizerInfo(A, {});

  // Make sure that G_IMPLICIT_DEF can be narrowed if the original size is not a
  // multiple of narrow size
  LLT S32{LLT::scalar(32)};
  LLT S48{LLT::scalar(48)};
  LLT S64{LLT::scalar(64)};
  LLT V2S64{{LLT::fixed_vector(2, 64)}};

  auto Implicit1 = B.buildUndef(S64);
  auto Implicit2 = B.buildUndef(S64);
  auto Implicit3 = B.buildUndef(V2S64);
  auto Implicit4 = B.buildUndef(V2S64);

  AInfo Info(MF->getSubtarget());
  DummyGISelObserver Observer;
  LegalizerHelper Helper(*MF, Info, Observer, B);

  // Perform Legalization

  B.setInsertPt(*EntryMBB, Implicit1->getIterator());
  EXPECT_EQ(LegalizerHelper::LegalizeResult::Legalized,
            Helper.narrowScalar(*Implicit1, 0, S48));

  B.setInsertPt(*EntryMBB, Implicit2->getIterator());
  EXPECT_EQ(LegalizerHelper::LegalizeResult::Legalized,
            Helper.narrowScalar(*Implicit2, 0, S32));

  B.setInsertPt(*EntryMBB, Implicit3->getIterator());
  EXPECT_EQ(LegalizerHelper::LegalizeResult::Legalized,
            Helper.narrowScalar(*Implicit3, 0, S48));

  B.setInsertPt(*EntryMBB, Implicit4->getIterator());
  EXPECT_EQ(LegalizerHelper::LegalizeResult::Legalized,
            Helper.narrowScalar(*Implicit4, 0, S32));

  const auto *CheckStr = R"(
  CHECK: [[DEF:%[0-9]+]]:_(s48) = G_IMPLICIT_DEF
  CHECK: [[ANYEXT:%[0-9]+]]:_(s64) = G_ANYEXT [[DEF]]

  CHECK: [[DEF:%[0-9]+]]:_(s32) = G_IMPLICIT_DEF
  CHECK: [[DEF1:%[0-9]+]]:_(s32) = G_IMPLICIT_DEF
  CHECK: [[MV:%[0-9]+]]:_(s64) = G_MERGE_VALUES [[DEF]]:_(s32), [[DEF1]]

  CHECK: [[DEF:%[0-9]+]]:_(<2 x s48>) = G_IMPLICIT_DEF
  CHECK: [[ANYEXT:%[0-9]+]]:_(<2 x s64>) = G_ANYEXT [[DEF]]

  CHECK: [[DEF:%[0-9]+]]:_(s32) = G_IMPLICIT_DEF
  CHECK: [[DEF1:%[0-9]+]]:_(s32) = G_IMPLICIT_DEF
  CHECK: [[DEF2:%[0-9]+]]:_(s32) = G_IMPLICIT_DEF
  CHECK: [[DEF3:%[0-9]+]]:_(s32) = G_IMPLICIT_DEF
  CHECK: [[BV:%[0-9]+]]:_(<2 x s64>) = G_BUILD_VECTOR [[DEF]]:_(s32), [[DEF1]]:_(s32), [[DEF2]]:_(s32), [[DEF3]]:_(s32)
  )";

  // Check
  EXPECT_TRUE(CheckMachineFunction(*MF, CheckStr)) << *MF;
}

// Test widening of G_FREEZE
TEST_F(AArch64GISelMITest, WidenFreeze) {
  setUp();
  if (!TM)
    return;

  DefineLegalizerInfo(A, {});

  // Make sure that G_FREEZE is widened with anyext
  LLT S64{LLT::scalar(64)};
  LLT S128{LLT::scalar(128)};
  LLT V2S32{LLT::fixed_vector(2, 32)};
  LLT V2S64{LLT::fixed_vector(2, 64)};

  auto Vector = B.buildBitcast(V2S32, Copies[0]);

  auto FreezeScalar = B.buildInstr(TargetOpcode::G_FREEZE, {S64}, {Copies[0]});
  auto FreezeVector = B.buildInstr(TargetOpcode::G_FREEZE, {V2S32}, {Vector});

  AInfo Info(MF->getSubtarget());
  DummyGISelObserver Observer;
  LegalizerHelper Helper(*MF, Info, Observer, B);

  // Perform Legalization

  B.setInsertPt(*EntryMBB, FreezeScalar->getIterator());
  EXPECT_EQ(LegalizerHelper::LegalizeResult::Legalized,
            Helper.widenScalar(*FreezeScalar, 0, S128));

  B.setInsertPt(*EntryMBB, FreezeVector->getIterator());
  EXPECT_EQ(LegalizerHelper::LegalizeResult::Legalized,
            Helper.widenScalar(*FreezeVector, 0, V2S64));

  const auto *CheckStr = R"(
  CHECK: [[COPY:%[0-9]+]]:_(s64) = COPY
  CHECK: [[BITCAST:%[0-9]+]]:_(<2 x s32>) = G_BITCAST [[COPY]]

  CHECK: [[ANYEXT:%[0-9]+]]:_(s128) = G_ANYEXT [[COPY]]
  CHECK: [[FREEZE:%[0-9]+]]:_(s128) = G_FREEZE [[ANYEXT]]
  CHECK: [[TRUNC:%[0-9]+]]:_(s64) = G_TRUNC [[FREEZE]]

  CHECK: [[ANYEXT1:%[0-9]+]]:_(<2 x s64>) = G_ANYEXT [[BITCAST]]
  CHECK: [[FREEZE1:%[0-9]+]]:_(<2 x s64>) = G_FREEZE [[ANYEXT1]]
  CHECK: [[TRUNC1:%[0-9]+]]:_(<2 x s32>) = G_TRUNC [[FREEZE1]]
  )";

  // Check
  EXPECT_TRUE(CheckMachineFunction(*MF, CheckStr)) << *MF;
}

// Test narrowing of G_FREEZE
TEST_F(AArch64GISelMITest, NarrowFreeze) {
  setUp();
  if (!TM)
    return;

  DefineLegalizerInfo(A, {});

  // Make sure that G_FREEZE is narrowed using unmerge/extract
  LLT S32{LLT::scalar(32)};
  LLT S33{LLT::scalar(33)};
  LLT S48{LLT::scalar(48)};
  LLT S64{LLT::scalar(64)};
  LLT V2S16{LLT::fixed_vector(2, 16)};
  LLT V3S16{LLT::fixed_vector(3, 16)};
  LLT V4S16{LLT::fixed_vector(4, 16)};

  auto Trunc = B.buildTrunc(S33, {Copies[0]});
  auto Trunc1 = B.buildTrunc(S48, {Copies[0]});
  auto Vector = B.buildBitcast(V3S16, Trunc1);

  auto FreezeScalar = B.buildInstr(TargetOpcode::G_FREEZE, {S64}, {Copies[0]});
  auto FreezeOdd = B.buildInstr(TargetOpcode::G_FREEZE, {S33}, {Trunc});
  auto FreezeVector = B.buildInstr(TargetOpcode::G_FREEZE, {V3S16}, {Vector});
  auto FreezeVector1 = B.buildInstr(TargetOpcode::G_FREEZE, {V3S16}, {Vector});

  AInfo Info(MF->getSubtarget());
  DummyGISelObserver Observer;
  LegalizerHelper Helper(*MF, Info, Observer, B);

  // Perform Legalization

  B.setInsertPt(*EntryMBB, FreezeScalar->getIterator());
  EXPECT_EQ(LegalizerHelper::LegalizeResult::Legalized,
            Helper.narrowScalar(*FreezeScalar, 0, S32));

  // This should be followed by narrowScalar to S32.
  B.setInsertPt(*EntryMBB, FreezeOdd->getIterator());
  EXPECT_EQ(LegalizerHelper::LegalizeResult::Legalized,
            Helper.widenScalar(*FreezeOdd, 0, S64));

  B.setInsertPt(*EntryMBB, FreezeVector->getIterator());
  EXPECT_EQ(LegalizerHelper::LegalizeResult::Legalized,
            Helper.fewerElementsVector(*FreezeVector, 0, V2S16));

  // This should be followed by fewerElements to V2S16.
  B.setInsertPt(*EntryMBB, FreezeVector1->getIterator());
  EXPECT_EQ(LegalizerHelper::LegalizeResult::Legalized,
            Helper.moreElementsVector(*FreezeVector1, 0, V4S16));

  const auto *CheckStr = R"(
  CHECK: [[COPY:%[0-9]+]]:_(s64) = COPY
  CHECK: [[TRUNC:%[0-9]+]]:_(s33) = G_TRUNC [[COPY]]
  CHECK: [[TRUNC1:%[0-9]+]]:_(s48) = G_TRUNC [[COPY]]
  CHECK: [[BITCAST:%[0-9]+]]:_(<3 x s16>) = G_BITCAST [[TRUNC1]]

  CHECK: [[UV:%[0-9]+]]:_(s32), [[UV1:%[0-9]+]]:_(s32) = G_UNMERGE_VALUES [[COPY]]
  CHECK: [[FREEZE:%[0-9]+]]:_(s32) = G_FREEZE [[UV]]
  CHECK: [[FREEZE1:%[0-9]+]]:_(s32) = G_FREEZE [[UV1]]
  CHECK: [[MV:%[0-9]+]]:_(s64) = G_MERGE_VALUES [[FREEZE]]:_(s32), [[FREEZE1]]

  CHECK: [[ANYEXT:%[0-9]+]]:_(s64) = G_ANYEXT [[TRUNC]]
  CHECK: [[FREEZE2:%[0-9]+]]:_(s64) = G_FREEZE [[ANYEXT]]
  CHECK: [[TRUNC1:%[0-9]+]]:_(s33) = G_TRUNC [[FREEZE2]]

  CHECK: [[UV2:%[0-9]+]]:_(s16), [[UV3:%[0-9]+]]:_(s16), [[UV4:%[0-9]+]]:_(s16) = G_UNMERGE_VALUES [[BITCAST]]
  CHECK: [[BV:%[0-9]+]]:_(<2 x s16>) = G_BUILD_VECTOR [[UV2]]:_(s16), [[UV3]]:_(s16)
  CHECK: [[FREEZE3:%[0-9]+]]:_(<2 x s16>) = G_FREEZE [[BV]]
  CHECK: [[FREEZE4:%[0-9]+]]:_(s16) = G_FREEZE [[UV4]]
  CHECK: [[FREEZE3_E0:%[0-9]+]]:_(s16), [[FREEZE3_E1:%[0-9]+]]:_(s16) = G_UNMERGE_VALUES [[FREEZE3]]
  CHECK: [[BV1:%[0-9]+]]:_(<3 x s16>) = G_BUILD_VECTOR [[FREEZE3_E0]]:_(s16), [[FREEZE3_E1]]:_(s16), [[FREEZE4]]:_(s16)

  CHECK: [[UV5:%[0-9]+]]:_(s16), [[UV6:%[0-9]+]]:_(s16), [[UV7:%[0-9]+]]:_(s16) = G_UNMERGE_VALUES [[BITCAST]]
  CHECK: [[IMP_DEF:%[0-9]+]]:_(s16) = G_IMPLICIT_DEF
  CHECK: [[BV1:%[0-9]+]]:_(<4 x s16>) = G_BUILD_VECTOR [[UV5]]:_(s16), [[UV6]]:_(s16), [[UV7]]:_(s16), [[IMP_DEF]]:_(s16)
  CHECK: [[FREEZE5:%[0-9]+]]:_(<4 x s16>) = G_FREEZE [[BV1]]
  CHECK: [[FREEZE5_E0:%[0-9]+]]:_(s16), [[FREEZE5_E1:%[0-9]+]]:_(s16), [[FREEZE5_E2:%[0-9]+]]:_(s16), [[FREEZE5_E3:%[0-9]+]]:_(s16) = G_UNMERGE_VALUES [[FREEZE5]]
  CHECK: [[BV2:%[0-9]+]]:_(<3 x s16>) = G_BUILD_VECTOR [[FREEZE5_E0]]:_(s16), [[FREEZE5_E1]]:_(s16), [[FREEZE5_E2]]:_(s16)
  )";

  // Check
  EXPECT_TRUE(CheckMachineFunction(*MF, CheckStr)) << *MF;
}

// Test fewer elements of G_FREEZE
TEST_F(AArch64GISelMITest, FewerElementsFreeze) {
  setUp();
  if (!TM)
    return;

  DefineLegalizerInfo(A, {});

  LLT S32{LLT::scalar(32)};
  LLT V2S16{LLT::fixed_vector(2, 16)};
  LLT V2S32{LLT::fixed_vector(2, 32)};
  LLT V4S16{LLT::fixed_vector(4, 16)};

  auto Vector1 = B.buildBitcast(V2S32, Copies[0]);
  auto Vector2 = B.buildBitcast(V4S16, Copies[0]);

  auto FreezeVector1 = B.buildInstr(TargetOpcode::G_FREEZE, {V2S32}, {Vector1});
  auto FreezeVector2 = B.buildInstr(TargetOpcode::G_FREEZE, {V4S16}, {Vector2});

  AInfo Info(MF->getSubtarget());
  DummyGISelObserver Observer;
  LegalizerHelper Helper(*MF, Info, Observer, B);

  // Perform Legalization

  B.setInsertPt(*EntryMBB, FreezeVector1->getIterator());
  EXPECT_EQ(LegalizerHelper::LegalizeResult::Legalized,
            Helper.fewerElementsVector(*FreezeVector1, 0, S32));

  B.setInsertPt(*EntryMBB, FreezeVector2->getIterator());
  EXPECT_EQ(LegalizerHelper::LegalizeResult::Legalized,
            Helper.fewerElementsVector(*FreezeVector2, 0, V2S16));

  const auto *CheckStr = R"(
  CHECK: [[COPY:%[0-9]+]]:_(s64) = COPY
  CHECK: [[BITCAST:%[0-9]+]]:_(<2 x s32>) = G_BITCAST [[COPY]]
  CHECK: [[BITCAST1:%[0-9]+]]:_(<4 x s16>) = G_BITCAST [[COPY]]

  CHECK: [[UV:%[0-9]+]]:_(s32), [[UV1:%[0-9]+]]:_(s32) = G_UNMERGE_VALUES [[BITCAST]]
  CHECK: [[FREEZE:%[0-9]+]]:_(s32) = G_FREEZE [[UV]]
  CHECK: [[FREEZE1:%[0-9]+]]:_(s32) = G_FREEZE [[UV1]]
  CHECK: [[MV:%[0-9]+]]:_(<2 x s32>) = G_BUILD_VECTOR [[FREEZE]]:_(s32), [[FREEZE1]]

  CHECK: [[UV:%[0-9]+]]:_(<2 x s16>), [[UV1:%[0-9]+]]:_(<2 x s16>) = G_UNMERGE_VALUES [[BITCAST1]]
  CHECK: [[FREEZE2:%[0-9]+]]:_(<2 x s16>) = G_FREEZE [[UV]]
  CHECK: [[FREEZE3:%[0-9]+]]:_(<2 x s16>) = G_FREEZE [[UV1]]
  CHECK: [[MV:%[0-9]+]]:_(<4 x s16>) = G_CONCAT_VECTORS [[FREEZE2]]:_(<2 x s16>), [[FREEZE3]]
  )";

  // Check
  EXPECT_TRUE(CheckMachineFunction(*MF, CheckStr)) << *MF;
}

// Test more elements of G_FREEZE
TEST_F(AArch64GISelMITest, MoreElementsFreeze) {
  setUp();
  if (!TM)
    return;

  DefineLegalizerInfo(A, {});

  LLT V2S32{LLT::fixed_vector(2, 32)};
  LLT V4S32{LLT::fixed_vector(4, 32)};

  auto Vector1 = B.buildBitcast(V2S32, Copies[0]);
  auto FreezeVector1 = B.buildInstr(TargetOpcode::G_FREEZE, {V2S32}, {Vector1});

  AInfo Info(MF->getSubtarget());
  DummyGISelObserver Observer;
  LegalizerHelper Helper(*MF, Info, Observer, B);

  // Perform Legalization
  B.setInsertPt(*EntryMBB, FreezeVector1->getIterator());
  EXPECT_EQ(LegalizerHelper::LegalizeResult::Legalized,
            Helper.moreElementsVector(*FreezeVector1, 0, V4S32));

  const auto *CheckStr = R"(
  CHECK: [[COPY:%[0-9]+]]:_(s64) = COPY
  CHECK: [[BITCAST:%[0-9]+]]:_(<2 x s32>) = G_BITCAST [[COPY]]
  CHECK: [[BITCAST_E0:%[0-9]+]]:_(s32), [[BITCAST_E1:%[0-9]+]]:_(s32) = G_UNMERGE_VALUES [[BITCAST]]:_(<2 x s32>)
  CHECK: [[IMP_DEF:%[0-9]+]]:_(s32) = G_IMPLICIT_DEF
  CHECK: [[BITCAST_LARGE:%[0-9]+]]:_(<4 x s32>) = G_BUILD_VECTOR [[BITCAST_E0]]:_(s32), [[BITCAST_E1]]:_(s32), [[IMP_DEF]]:_(s32), [[IMP_DEF]]:_(s32)
  CHECK: [[FREEZE:%[0-9]+]]:_(<4 x s32>) = G_FREEZE [[BITCAST_LARGE]]
  CHECK: [[FREEZE_E0:%[0-9]+]]:_(s32), [[FREEZE_E1:%[0-9]+]]:_(s32), [[FREEZE_E2:%[0-9]+]]:_(s32), [[FREEZE_E3:%[0-9]+]]:_(s32) = G_UNMERGE_VALUES [[FREEZE]]:_(<4 x s32>)
  CHECK: (<2 x s32>) = G_BUILD_VECTOR [[FREEZE_E0]]:_(s32), [[FREEZE_E1]]:_(s32)
  )";

  // Check
  EXPECT_TRUE(CheckMachineFunction(*MF, CheckStr)) << *MF;
}

// Test fewer elements of G_INSERT_VECTOR_ELEMENT
TEST_F(AArch64GISelMITest, FewerElementsInsertVectorElt) {
  setUp();
  if (!TM)
    return;

  DefineLegalizerInfo(A, {});

  LLT P0{LLT::pointer(0, 64)};
  LLT S64{LLT::scalar(64)};
  LLT S16{LLT::scalar(16)};
  LLT V2S16{LLT::fixed_vector(2, 16)};
  LLT V3S16{LLT::fixed_vector(3, 16)};
  LLT V8S16{LLT::fixed_vector(8, 16)};

  auto Ptr0 = B.buildIntToPtr(P0, Copies[0]);
  auto VectorV8 = B.buildLoad(V8S16, Ptr0, MachinePointerInfo(), Align(8));
  auto Value = B.buildTrunc(S16, Copies[1]);

  auto Seven = B.buildConstant(S64, 7);
  auto InsertV8Constant7_0 =
      B.buildInsertVectorElement(V8S16, VectorV8, Value, Seven);
  auto InsertV8Constant7_1 =
      B.buildInsertVectorElement(V8S16, VectorV8, Value, Seven);

  B.buildStore(InsertV8Constant7_0, Ptr0, MachinePointerInfo(), Align(8),
               MachineMemOperand::MOVolatile);
  B.buildStore(InsertV8Constant7_1, Ptr0, MachinePointerInfo(), Align(8),
               MachineMemOperand::MOVolatile);

  AInfo Info(MF->getSubtarget());
  DummyGISelObserver Observer;
  LegalizerHelper Helper(*MF, Info, Observer, B);

  // Perform Legalization
  B.setInsertPt(*EntryMBB, InsertV8Constant7_0->getIterator());

  // This should index the high element of the 4th piece of an unmerge.
  EXPECT_EQ(LegalizerHelper::LegalizeResult::Legalized,
            Helper.fewerElementsVector(*InsertV8Constant7_0, 0, V2S16));

  // This case requires extracting an intermediate vector type into the target
  // v4s16.
  B.setInsertPt(*EntryMBB, InsertV8Constant7_1->getIterator());
  EXPECT_EQ(LegalizerHelper::LegalizeResult::Legalized,
            Helper.fewerElementsVector(*InsertV8Constant7_1, 0, V3S16));

  const auto *CheckStr = R"(
  CHECK: [[COPY0:%[0-9]+]]:_(s64) = COPY
  CHECK: [[COPY1:%[0-9]+]]:_(s64) = COPY
  CHECK: [[COPY2:%[0-9]+]]:_(s64) = COPY
  CHECK: [[PTR0:%[0-9]+]]:_(p0) = G_INTTOPTR [[COPY0]]
  CHECK: [[VEC8:%[0-9]+]]:_(<8 x s16>) = G_LOAD [[PTR0]]:_(p0) :: (load (<8 x s16>), align 8)
  CHECK: [[INSERT_VAL:%[0-9]+]]:_(s16) = G_TRUNC [[COPY1]]


  CHECK: [[UNMERGE0:%[0-9]+]]:_(<2 x s16>), [[UNMERGE1:%[0-9]+]]:_(<2 x s16>), [[UNMERGE2:%[0-9]+]]:_(<2 x s16>), [[UNMERGE3:%[0-9]+]]:_(<2 x s16>) = G_UNMERGE_VALUES [[VEC8]]
  CHECK: [[ONE:%[0-9]+]]:_(s64) = G_CONSTANT i64 1
  CHECK: [[SUB_INSERT_7:%[0-9]+]]:_(<2 x s16>) = G_INSERT_VECTOR_ELT [[UNMERGE3]]:_, [[INSERT_VAL]]:_(s16), [[ONE]]
  CHECK: [[INSERT_V8_7_0:%[0-9]+]]:_(<8 x s16>) = G_CONCAT_VECTORS [[UNMERGE0]]:_(<2 x s16>), [[UNMERGE1]]:_(<2 x s16>), [[UNMERGE2]]:_(<2 x s16>), [[SUB_INSERT_7]]:_(<2 x s16>)


  CHECK: [[UNMERGE1_0:%[0-9]+]]:_(s16), [[UNMERGE1_1:%[0-9]+]]:_(s16), [[UNMERGE1_2:%[0-9]+]]:_(s16), [[UNMERGE1_3:%[0-9]+]]:_(s16), [[UNMERGE1_4:%[0-9]+]]:_(s16), [[UNMERGE1_5:%[0-9]+]]:_(s16), [[UNMERGE1_6:%[0-9]+]]:_(s16), [[UNMERGE1_7:%[0-9]+]]:_(s16) = G_UNMERGE_VALUES [[VEC8]]:_(<8 x s16>)
  CHECK: [[IMPDEF_S16:%[0-9]+]]:_(s16) = G_IMPLICIT_DEF
  CHECK: [[BUILD0:%[0-9]+]]:_(<3 x s16>) = G_BUILD_VECTOR [[UNMERGE1_0]]:_(s16), [[UNMERGE1_1]]:_(s16), [[UNMERGE1_2]]:_(s16)
  CHECK: [[BUILD1:%[0-9]+]]:_(<3 x s16>) = G_BUILD_VECTOR [[UNMERGE1_3]]:_(s16), [[UNMERGE1_4]]:_(s16), [[UNMERGE1_5]]:_(s16)
  CHECK: [[BUILD2:%[0-9]+]]:_(<3 x s16>) = G_BUILD_VECTOR [[UNMERGE1_6]]:_(s16), [[UNMERGE1_7]]:_(s16), [[IMPDEF_S16]]:_(s16)
  CHECK: [[IMPDEF_V3S16:%[0-9]+]]:_(<3 x s16>) = G_IMPLICIT_DEF
  CHECK: [[ONE_1:%[0-9]+]]:_(s64) = G_CONSTANT i64 1
  CHECK: [[SUB_INSERT_7_V3S16:%[0-9]+]]:_(<3 x s16>) = G_INSERT_VECTOR_ELT [[BUILD2]]:_, [[INSERT_VAL]]:_(s16), [[ONE_1]]

  CHECK: [[WIDE_CONCAT_DEAD:%[0-9]+]]:_(<24 x s16>) = G_CONCAT_VECTORS [[BUILD0]]:_(<3 x s16>), [[BUILD1]]:_(<3 x s16>), [[SUB_INSERT_7_V3S16]]:_(<3 x s16>), [[IMPDEF_V3S16]]:_(<3 x s16>), [[IMPDEF_V3S16]]:_(<3 x s16>), [[IMPDEF_V3S16]]:_(<3 x s16>), [[IMPDEF_V3S16]]:_(<3 x s16>), [[IMPDEF_V3S16]]:_(<3 x s16>)
  CHECK: [[WIDE_CONCAT:%[0-9]+]]:_(<24 x s16>) = G_CONCAT_VECTORS [[BUILD0]]:_(<3 x s16>), [[BUILD1]]:_(<3 x s16>), [[SUB_INSERT_7_V3S16]]:_(<3 x s16>), [[IMPDEF_V3S16]]:_(<3 x s16>), [[IMPDEF_V3S16]]:_(<3 x s16>), [[IMPDEF_V3S16]]:_(<3 x s16>), [[IMPDEF_V3S16]]:_(<3 x s16>), [[IMPDEF_V3S16]]:_(<3 x s16>)
  CHECK: [[INSERT_V8_7_1:%[0-9]+]]:_(<8 x s16>), %{{[0-9]+}}:_(<8 x s16>), %{{[0-9]+}}:_(<8 x s16>) = G_UNMERGE_VALUES [[WIDE_CONCAT]]:_(<24 x s16>)


  CHECK: G_STORE [[INSERT_V8_7_0]]
  CHECK: G_STORE [[INSERT_V8_7_1]]
  )";

  // Check
  EXPECT_TRUE(CheckMachineFunction(*MF, CheckStr)) << *MF;
}

// Test widen scalar of G_UNMERGE_VALUES
TEST_F(AArch64GISelMITest, widenScalarUnmerge) {
  setUp();
  if (!TM)
    return;

  DefineLegalizerInfo(A, {});

  LLT S96{LLT::scalar(96)};
  LLT S64{LLT::scalar(64)};
  LLT S48{LLT::scalar(48)};

  auto Src = B.buildAnyExt(S96, Copies[0]);
  auto Unmerge = B.buildUnmerge(S48, Src);

  AInfo Info(MF->getSubtarget());
  DummyGISelObserver Observer;
  LegalizerHelper Helper(*MF, Info, Observer, B);

  // Perform Legalization
  B.setInsertPt(*EntryMBB, Unmerge->getIterator());

  // This should create unmerges to a GCD type (S16), then remerge to S48
  EXPECT_EQ(LegalizerHelper::LegalizeResult::Legalized,
            Helper.widenScalar(*Unmerge, 0, S64));

  const auto *CheckStr = R"(
  CHECK: [[COPY0:%[0-9]+]]:_(s64) = COPY
  CHECK: [[COPY1:%[0-9]+]]:_(s64) = COPY
  CHECK: [[COPY2:%[0-9]+]]:_(s64) = COPY
  CHECK: [[ANYEXT:%[0-9]+]]:_(s96) = G_ANYEXT [[COPY0]]
  CHECK: [[ANYEXT1:%[0-9]+]]:_(s192) = G_ANYEXT [[ANYEXT]]
  CHECK: [[UNMERGE:%[0-9]+]]:_(s64), [[UNMERGE1:%[0-9]+]]:_(s64), [[UNMERGE2:%[0-9]+]]:_(s64) = G_UNMERGE_VALUES [[ANYEXT1]]
  CHECK: [[UNMERGE3:%[0-9]+]]:_(s16), [[UNMERGE4:%[0-9]+]]:_(s16), [[UNMERGE5:%[0-9]+]]:_(s16), [[UNMERGE6:%[0-9]+]]:_(s16) = G_UNMERGE_VALUES [[UNMERGE]]
  CHECK: [[UNMERGE7:%[0-9]+]]:_(s16), [[UNMERGE8:%[0-9]+]]:_(s16), [[UNMERGE9:%[0-9]+]]:_(s16), [[UNMERGE10:%[0-9]+]]:_(s16) = G_UNMERGE_VALUES [[UNMERGE1]]
  CHECK: [[UNMERGE11:%[0-9]+]]:_(s16), [[UNMERGE12:%[0-9]+]]:_(s16), [[UNMERGE13:%[0-9]+]]:_(s16), [[UNMERGE14:%[0-9]+]]:_(s16) = G_UNMERGE_VALUES [[UNMERGE2]]
  CHECK: [[MERGE:%[0-9]+]]:_(s48) = G_MERGE_VALUES [[UNMERGE3]]:_(s16), [[UNMERGE4]]:_(s16), [[UNMERGE5]]:_(s16)
  CHECK: [[MERGE1:%[0-9]+]]:_(s48) = G_MERGE_VALUES [[UNMERGE6]]:_(s16), [[UNMERGE7]]:_(s16), [[UNMERGE8]]:_(s16)
  )";

  // Check
  EXPECT_TRUE(CheckMachineFunction(*MF, CheckStr)) << *MF;
}

// Test moreElements of G_SHUFFLE_VECTOR.
TEST_F(AArch64GISelMITest, moreElementsShuffle) {
  setUp();
  if (!TM)
    return;

  DefineLegalizerInfo(A, {});

  LLT S64{LLT::scalar(64)};
  LLT V6S64 = LLT::fixed_vector(6, S64);

  auto V1 = B.buildBuildVector(V6S64, {Copies[0], Copies[1], Copies[0],
                                       Copies[1], Copies[0], Copies[1]});
  auto V2 = B.buildBuildVector(V6S64, {Copies[0], Copies[1], Copies[0],
                                       Copies[1], Copies[0], Copies[1]});
  auto Shuffle = B.buildShuffleVector(V6S64, V1, V2, {3, 4, 7, 0, 1, 11});

  AInfo Info(MF->getSubtarget());
  DummyGISelObserver Observer;
  LegalizerHelper Helper(*MF, Info, Observer, B);

  // Perform Legalization
  B.setInsertPt(*EntryMBB, Shuffle->getIterator());

  EXPECT_EQ(LegalizerHelper::LegalizeResult::Legalized,
            Helper.moreElementsVector(*Shuffle, 0, LLT::fixed_vector(8, S64)));

  const auto *CheckStr = R"(
  CHECK: [[COPY0:%[0-9]+]]:_(s64) = COPY
  CHECK: [[COPY1:%[0-9]+]]:_(s64) = COPY
  CHECK: [[COPY2:%[0-9]+]]:_(s64) = COPY
  CHECK: [[BV1:%[0-9]+]]:_(<6 x s64>) = G_BUILD_VECTOR
  CHECK: [[BV2:%[0-9]+]]:_(<6 x s64>) = G_BUILD_VECTOR

  CHECK: [[BV1_E0:%[0-9]+]]:_(s64), [[BV1_E1:%[0-9]+]]:_(s64), [[BV1_E2:%[0-9]+]]:_(s64), [[BV1_E3:%[0-9]+]]:_(s64), [[BV1_E4:%[0-9]+]]:_(s64), [[BV1_E5:%[0-9]+]]:_(s64) = G_UNMERGE_VALUES [[BV1]]:_(<6 x s64>)
  CHECK: [[IMP_DEF0:%[0-9]+]]:_(s64) = G_IMPLICIT_DEF
  CHECK: [[BV1_LARGE:%[0-9]+]]:_(<8 x s64>) = G_BUILD_VECTOR [[BV1_E0]]:_(s64), [[BV1_E1]]:_(s64), [[BV1_E2]]:_(s64), [[BV1_E3]]:_(s64), [[BV1_E4]]:_(s64), [[BV1_E5]]:_(s64), [[IMP_DEF0]]:_(s64), [[IMP_DEF0]]:_(s64)

  CHECK: [[BV2_E0:%[0-9]+]]:_(s64), [[BV2_E1:%[0-9]+]]:_(s64), [[BV2_E2:%[0-9]+]]:_(s64), [[BV2_E3:%[0-9]+]]:_(s64), [[BV2_E4:%[0-9]+]]:_(s64), [[BV2_E5:%[0-9]+]]:_(s64) = G_UNMERGE_VALUES [[BV2]]:_(<6 x s64>)
  CHECK: [[IMP_DEF1:%[0-9]+]]:_(s64) = G_IMPLICIT_DEF
  CHECK: [[BV2_LARGE:%[0-9]+]]:_(<8 x s64>) = G_BUILD_VECTOR [[BV2_E0]]:_(s64), [[BV2_E1]]:_(s64), [[BV2_E2]]:_(s64), [[BV2_E3]]:_(s64), [[BV2_E4]]:_(s64), [[BV2_E5]]:_(s64), [[IMP_DEF1]]:_(s64), [[IMP_DEF1]]:_(s64)

  CHECK: [[SHUF:%[0-9]+]]:_(<8 x s64>) = G_SHUFFLE_VECTOR [[BV1_LARGE]]:_(<8 x s64>), [[BV2_LARGE]]:_, shufflemask(3, 4, 9, 0, 1, 13, undef, undef)

  CHECK: [[SHUF_E0:%[0-9]+]]:_(s64), [[SHUF_E1:%[0-9]+]]:_(s64), [[SHUF_E2:%[0-9]+]]:_(s64), [[SHUF_E3:%[0-9]+]]:_(s64), [[SHUF_E4:%[0-9]+]]:_(s64), [[SHUF_E5:%[0-9]+]]:_(s64), [[SHUF_E6:%[0-9]+]]:_(s64), [[SHUF_E7:%[0-9]+]]:_(s64) = G_UNMERGE_VALUES [[SHUF]]:_(<8 x s64>)
  CHECK: (<6 x s64>) = G_BUILD_VECTOR [[SHUF_E0]]:_(s64), [[SHUF_E1]]:_(s64), [[SHUF_E2]]:_(s64), [[SHUF_E3]]:_(s64), [[SHUF_E4]]:_(s64), [[SHUF_E5]]:_(s64)
  )";

  // Check
  EXPECT_TRUE(CheckMachineFunction(*MF, CheckStr)) << *MF;
}

// Test narror scalar of G_SHL with constant shift amount
TEST_F(AArch64GISelMITest, narrowScalarShiftByConstant) {
  setUp();
  if (!TM)
    return;

  DefineLegalizerInfo(A, {});

  LLT S64{LLT::scalar(64)};
  LLT S32{LLT::scalar(32)};

  auto Constant = B.buildConstant(S64, 33);
  auto Trunc = B.buildTrunc(S32, Constant);
  auto Shift = B.buildShl(S64, Copies[0], Trunc);

  AInfo Info(MF->getSubtarget());
  DummyGISelObserver Observer;
  LegalizerHelper Helper(*MF, Info, Observer, B);

  // Perform Legalization
  B.setInsertPt(*EntryMBB, Shift->getIterator());

  // This should detect the G_CONSTANT feeding the G_SHL through a G_TRUNC
  EXPECT_EQ(LegalizerHelper::LegalizeResult::Legalized,
            Helper.narrowScalarShift(*Shift, 0, S32));

  const auto *CheckStr = R"(
  CHECK: [[COPY0:%[0-9]+]]:_(s64) = COPY
  CHECK: [[COPY1:%[0-9]+]]:_(s64) = COPY
  CHECK: [[COPY2:%[0-9]+]]:_(s64) = COPY
  CHECK: [[THIRTY3:%[0-9]+]]:_(s64) = G_CONSTANT i64 33
  CHECK: [[TRUNC:%[0-9]+]]:_(s32) = G_TRUNC %4:_(s64)
  CHECK: [[UNMERGE:%[0-9]+]]:_(s32), [[UNMERGE2:%[0-9]+]]:_(s32) = G_UNMERGE_VALUES [[COPY0]]
  CHECK: [[ZERO:%[0-9]+]]:_(s32) = G_CONSTANT i32 0
  CHECK: [[ONE:%[0-9]+]]:_(s32) = G_CONSTANT i32 1
  CHECK: [[SHIFT:%[0-9]+]]:_(s32) = G_SHL [[UNMERGE]]:_, [[ONE]]:_(s32)
  CHECK: [[MERGE:%[0-9]+]]:_(s64) = G_MERGE_VALUES [[ZERO]]:_(s32), [[SHIFT]]:_(s32)
  )";

  // Check
  EXPECT_TRUE(CheckMachineFunction(*MF, CheckStr)) << *MF;
}

TEST_F(AArch64GISelMITest, MoreElementsSelect) {
  setUp();
  if (!TM)
    return;

  LLT s1 = LLT::scalar(1);
  LLT s64 = LLT::scalar(64);
  LLT v2s1 = LLT::fixed_vector(2, 1);
  LLT v2s32 = LLT::fixed_vector(2, 32);

  LegalizerInfo LI;
  DummyGISelObserver Observer;
  LegalizerHelper Helper(*MF, LI, Observer, B);

  B.setInsertPt(*EntryMBB, EntryMBB->end());

  auto Val0 = B.buildBitcast(v2s32, Copies[0]);
  auto Val1 = B.buildBitcast(v2s32, Copies[1]);

  // Build select of vectors with scalar condition.
  auto Zero = B.buildConstant(s64, 0);
  auto Cond = B.buildICmp(CmpInst::ICMP_EQ, s1, Copies[2], Zero);
  auto Select = B.buildSelect(v2s32, Cond, Val0, Val1);

  // Splat the condition into a vector select
  B.setInstr(*Select);

  EXPECT_EQ(LegalizerHelper::LegalizeResult::UnableToLegalize,
            Helper.moreElementsVector(*Select, 1, LLT::fixed_vector(3, 1)));
  EXPECT_EQ(LegalizerHelper::LegalizeResult::Legalized,
            Helper.moreElementsVector(*Select, 1, v2s1));

  auto CheckStr = R"(
  CHECK: [[BITCAST0:%[0-9]+]]:_(<2 x s32>) = G_BITCAST
  CHECK: [[BITCAST1:%[0-9]+]]:_(<2 x s32>) = G_BITCAST
  CHECK: [[ZERO0:%[0-9]+]]:_(s64) = G_CONSTANT i64 0
  CHECK: [[CMP:%[0-9]+]]:_(s1) = G_ICMP intpred(eq), %{{[0-9]+}}:_(s64), [[ZERO0]]
  CHECK: [[IMPDEF:%[0-9]+]]:_(<2 x s1>) = G_IMPLICIT_DEF
  CHECK: [[ZERO1:%[0-9]+]]:_(s64) = G_CONSTANT i64 0
  CHECK: [[INSERT:%[0-9]+]]:_(<2 x s1>) = G_INSERT_VECTOR_ELT [[IMPDEF]]:_, [[CMP]]:_(s1), [[ZERO1]]
  CHECK: [[SHUFFLE:%[0-9]+]]:_(<2 x s1>) = G_SHUFFLE_VECTOR [[INSERT]]:_(<2 x s1>), [[IMPDEF]]:_, shufflemask(0, 0)
  CHECK: [[SELECT:%[0-9]+]]:_(<2 x s32>) = G_SELECT [[SHUFFLE]]:_(<2 x s1>), [[BITCAST0]]:_, [[BITCAST1]]:_
  )";

  EXPECT_TRUE(CheckMachineFunction(*MF, CheckStr)) << *MF;
}

} // namespace