xref: /llvm-project-15.0.7/llvm/test/Transforms/RewriteStatepointsForGC/base-pointers-14.ll (revision 084ad1eb)

; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt -S -rewrite-statepoints-for-gc < %s | FileCheck %s

target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128-ni:1-p2:32:8:8:32-ni:2"
target triple = "x86_64-unknown-linux-gnu"

declare void @foo() gc "statepoint-example"

; FIXME: In this test case %b6.base, which is inserted by RS4GC, is identical
; to %b6.
define i8 addrspace(1)* @test1(i1 %c, i8 addrspace(1)* %b1, i8 addrspace(1)* %b2) gc "statepoint-example" {
; CHECK-LABEL: @test1(
; CHECK-NEXT:  left:
; CHECK-NEXT:    br i1 [[C:%.*]], label [[LOOP:%.*]], label [[MERGE2:%.*]]
; CHECK:       loop:
; CHECK-NEXT:    [[B5:%.*]] = phi i8 addrspace(1)* [ [[B2:%.*]], [[LEFT:%.*]] ], [ [[B5]], [[LOOP]] ]
; CHECK-NEXT:    br i1 [[C]], label [[LOOP]], label [[MERGE2]]
; CHECK:       merge2:
; CHECK-NEXT:    [[B6_BASE:%.*]] = phi i8 addrspace(1)* [ [[B1:%.*]], [[LEFT]] ], [ [[B2]], [[LOOP]] ], !is_base_value !0
; CHECK-NEXT:    [[B6:%.*]] = phi i8 addrspace(1)* [ [[B1]], [[LEFT]] ], [ [[B5]], [[LOOP]] ]
; CHECK-NEXT:    [[STATEPOINT_TOKEN:%.*]] = call token (i64, i32, void ()*, i32, i32, ...) @llvm.experimental.gc.statepoint.p0f_isVoidf(i64 2882400000, i32 0, void ()* elementtype(void ()) @foo, i32 0, i32 0, i32 0, i32 0) [ "deopt"(), "gc-live"(i8 addrspace(1)* [[B6]], i8 addrspace(1)* [[B6_BASE]]) ]
; CHECK-NEXT:    [[B6_RELOCATED:%.*]] = call coldcc i8 addrspace(1)* @llvm.experimental.gc.relocate.p1i8(token [[STATEPOINT_TOKEN]], i32 1, i32 0)
; CHECK-NEXT:    [[B6_BASE_RELOCATED:%.*]] = call coldcc i8 addrspace(1)* @llvm.experimental.gc.relocate.p1i8(token [[STATEPOINT_TOKEN]], i32 1, i32 1)
; CHECK-NEXT:    ret i8 addrspace(1)* [[B6_RELOCATED]]
;
left:
  br i1 %c, label %loop, label %merge2

loop:
  %b5 = phi i8 addrspace(1)* [ %b2, %left ], [ %b5, %loop ]
  br i1 %c, label %loop, label %merge2

merge2:
  %b6 = phi i8 addrspace(1)* [ %b1, %left ], [ %b5, %loop ]
  call void @foo() [ "deopt"() ]
  ret i8 addrspace(1)* %b6
}

define i8 addrspace(1)* @test2(i1 %c, i32 %n, i8 addrspace(1)* %b1, i8 addrspace(1)* %b2) gc "statepoint-example" {
; CHECK-LABEL: @test2(
; CHECK-NEXT:  entry:
; CHECK-NEXT:    br label [[LEFT:%.*]]
; CHECK:       left:
; CHECK-NEXT:    br i1 [[C:%.*]], label [[LOOP:%.*]], label [[MERGE2:%.*]]
; CHECK:       loop:
; CHECK-NEXT:    [[B5:%.*]] = phi i8 addrspace(1)* [ [[B2:%.*]], [[LEFT]] ], [ [[B5]], [[LOOP]] ], [ [[B5]], [[LOOP]] ]
; CHECK-NEXT:    switch i32 [[N:%.*]], label [[MERGE2]] [
; CHECK-NEXT:    i32 0, label [[LOOP]]
; CHECK-NEXT:    i32 1, label [[LOOP]]
; CHECK-NEXT:    i32 2, label [[LEFT]]
; CHECK-NEXT:    ]
; CHECK:       merge2:
; CHECK-NEXT:    [[B6_BASE:%.*]] = phi i8 addrspace(1)* [ [[B1:%.*]], [[LEFT]] ], [ [[B2]], [[LOOP]] ], !is_base_value !0
; CHECK-NEXT:    [[B6:%.*]] = phi i8 addrspace(1)* [ [[B1]], [[LEFT]] ], [ [[B5]], [[LOOP]] ]
; CHECK-NEXT:    [[STATEPOINT_TOKEN:%.*]] = call token (i64, i32, void ()*, i32, i32, ...) @llvm.experimental.gc.statepoint.p0f_isVoidf(i64 2882400000, i32 0, void ()* elementtype(void ()) @foo, i32 0, i32 0, i32 0, i32 0) [ "deopt"(), "gc-live"(i8 addrspace(1)* [[B6]], i8 addrspace(1)* [[B6_BASE]]) ]
; CHECK-NEXT:    [[B6_RELOCATED:%.*]] = call coldcc i8 addrspace(1)* @llvm.experimental.gc.relocate.p1i8(token [[STATEPOINT_TOKEN]], i32 1, i32 0)
; CHECK-NEXT:    [[B6_BASE_RELOCATED:%.*]] = call coldcc i8 addrspace(1)* @llvm.experimental.gc.relocate.p1i8(token [[STATEPOINT_TOKEN]], i32 1, i32 1)
; CHECK-NEXT:    ret i8 addrspace(1)* [[B6_RELOCATED]]
;
entry:
  br label %left

left:
  br i1 %c, label %loop, label %merge2

loop:
  %b5 = phi i8 addrspace(1)* [ %b2, %left ], [ %b5, %loop ], [ %b5, %loop ]
  switch i32 %n, label %merge2 [ i32 0, label %loop
  i32 1, label %loop
  i32 2, label %left ]

merge2:
  %b6 = phi i8 addrspace(1)* [ %b1, %left ], [ %b5, %loop ]
  call void @foo() [ "deopt"() ]
  ret i8 addrspace(1)* %b6
}

; FIXME: In this test case %b5.base and %b6.base (inserted by RS4GC) are
; identical to %b5 and %b6 ; correspondingly.
define i8 addrspace(1)* @test3(i1 %c, i8 addrspace(1)* %b1, i8 addrspace(1)* %b2) gc "statepoint-example" {
; CHECK-LABEL: @test3(
; CHECK-NEXT:  left:
; CHECK-NEXT:    br i1 [[C:%.*]], label [[LOOP:%.*]], label [[MERGE2:%.*]]
; CHECK:       loop:
; CHECK-NEXT:    [[B5_BASE:%.*]] = phi i8 addrspace(1)* [ [[B2:%.*]], [[LEFT:%.*]] ], [ [[B5_BASE]], [[LOOP]] ], [ [[B6_BASE_RELOCATED:%.*]], [[MERGE2]] ], !is_base_value !0
; CHECK-NEXT:    [[B5:%.*]] = phi i8 addrspace(1)* [ [[B2]], [[LEFT]] ], [ [[B5]], [[LOOP]] ], [ [[B6_RELOCATED:%.*]], [[MERGE2]] ]
; CHECK-NEXT:    br i1 [[C]], label [[LOOP]], label [[MERGE2]]
; CHECK:       merge2:
; CHECK-NEXT:    [[B6_BASE:%.*]] = phi i8 addrspace(1)* [ [[B1:%.*]], [[LEFT]] ], [ [[B5_BASE]], [[LOOP]] ], !is_base_value !0
; CHECK-NEXT:    [[B6:%.*]] = phi i8 addrspace(1)* [ [[B1]], [[LEFT]] ], [ [[B5]], [[LOOP]] ]
; CHECK-NEXT:    [[STATEPOINT_TOKEN:%.*]] = call token (i64, i32, void ()*, i32, i32, ...) @llvm.experimental.gc.statepoint.p0f_isVoidf(i64 2882400000, i32 0, void ()* elementtype(void ()) @foo, i32 0, i32 0, i32 0, i32 0) [ "deopt"(), "gc-live"(i8 addrspace(1)* [[B6_BASE]], i8 addrspace(1)* [[B6]]) ]
; CHECK-NEXT:    [[B6_BASE_RELOCATED]] = call coldcc i8 addrspace(1)* @llvm.experimental.gc.relocate.p1i8(token [[STATEPOINT_TOKEN]], i32 0, i32 0)
; CHECK-NEXT:    [[B6_RELOCATED]] = call coldcc i8 addrspace(1)* @llvm.experimental.gc.relocate.p1i8(token [[STATEPOINT_TOKEN]], i32 0, i32 1)
; CHECK-NEXT:    br i1 [[C]], label [[LOOP]], label [[EXIT:%.*]]
; CHECK:       exit:
; CHECK-NEXT:    ret i8 addrspace(1)* [[B6_RELOCATED]]
;
left:
  br i1 %c, label %loop, label %merge2

loop:
  %b5 = phi i8 addrspace(1)* [ %b2, %left ], [ %b5, %loop ], [ %b6, %merge2 ]
  br i1 %c, label %loop, label %merge2

merge2:
  %b6 = phi i8 addrspace(1)* [ %b1, %left ], [ %b5, %loop ]
  call void @foo() [ "deopt"() ]
  br i1 %c, label %loop, label %exit

exit:
  ret i8 addrspace(1)* %b6
}

define i8 addrspace(1)* @test4(i1 %c, i8 addrspace(1)* %b1, i8 addrspace(1)* %b2) gc "statepoint-example" {
; CHECK-LABEL: @test4(
; CHECK-NEXT:  left:
; CHECK-NEXT:    br i1 [[C:%.*]], label [[LOOP:%.*]], label [[MERGE2:%.*]]
; CHECK:       loop:
; CHECK-NEXT:    [[B3:%.*]] = phi i8 addrspace(1)* [ [[B2:%.*]], [[LEFT:%.*]] ], [ [[B5:%.*]], [[LOOP]] ]
; CHECK-NEXT:    [[B4:%.*]] = bitcast i8 addrspace(1)* [[B3]] to i32 addrspace(1)*
; CHECK-NEXT:    [[B5]] = bitcast i32 addrspace(1)* [[B4]] to i8 addrspace(1)*
; CHECK-NEXT:    br i1 [[C]], label [[LOOP]], label [[MERGE2]]
; CHECK:       merge2:
; CHECK-NEXT:    [[B6_BASE:%.*]] = phi i8 addrspace(1)* [ [[B1:%.*]], [[LEFT]] ], [ [[B2]], [[LOOP]] ], !is_base_value !0
; CHECK-NEXT:    [[B6:%.*]] = phi i8 addrspace(1)* [ [[B1]], [[LEFT]] ], [ [[B5]], [[LOOP]] ]
; CHECK-NEXT:    [[STATEPOINT_TOKEN:%.*]] = call token (i64, i32, void ()*, i32, i32, ...) @llvm.experimental.gc.statepoint.p0f_isVoidf(i64 2882400000, i32 0, void ()* elementtype(void ()) @foo, i32 0, i32 0, i32 0, i32 0) [ "deopt"(), "gc-live"(i8 addrspace(1)* [[B6]], i8 addrspace(1)* [[B6_BASE]]) ]
; CHECK-NEXT:    [[B6_RELOCATED:%.*]] = call coldcc i8 addrspace(1)* @llvm.experimental.gc.relocate.p1i8(token [[STATEPOINT_TOKEN]], i32 1, i32 0)
; CHECK-NEXT:    [[B6_BASE_RELOCATED:%.*]] = call coldcc i8 addrspace(1)* @llvm.experimental.gc.relocate.p1i8(token [[STATEPOINT_TOKEN]], i32 1, i32 1)
; CHECK-NEXT:    ret i8 addrspace(1)* [[B6_RELOCATED]]
;
left:
  br i1 %c, label %loop, label %merge2

loop:
  %b3 = phi i8 addrspace(1)* [ %b2, %left ], [ %b5, %loop ]
  %b4 = bitcast i8 addrspace(1)* %b3 to i32 addrspace(1)*
  %b5 = bitcast i32 addrspace(1)* %b4 to i8 addrspace(1)*
  br i1 %c, label %loop, label %merge2

merge2:
  %b6 = phi i8 addrspace(1)* [ %b1, %left ], [ %b5, %loop ]
  call void @foo() [ "deopt"() ]
  ret i8 addrspace(1)* %b6
}

define i8 addrspace(1)* @test5(i1 %c1, i1 %c2, i8 addrspace(1)* %b1, i8 addrspace(1)* %b2) gc "statepoint-example" {
; CHECK-LABEL: @test5(
; CHECK-NEXT:  entry:
; CHECK-NEXT:    br i1 [[C1:%.*]], label [[LOOP:%.*]], label [[MERGE2:%.*]]
; CHECK:       loop:
; CHECK-NEXT:    [[B3:%.*]] = phi i8 addrspace(1)* [ [[B2:%.*]], [[ENTRY:%.*]] ], [ [[B5:%.*]], [[LEFT:%.*]] ]
; CHECK-NEXT:    [[B4:%.*]] = addrspacecast i8 addrspace(1)* [[B3]] to i8*
; CHECK-NEXT:    br i1 [[C1]], label [[LEFT]], label [[MERGE2]]
; CHECK:       left:
; CHECK-NEXT:    [[B5]] = addrspacecast i8* [[B4]] to i8 addrspace(1)*
; CHECK-NEXT:    br i1 [[C2:%.*]], label [[LOOP]], label [[MERGE2]]
; CHECK:       merge2:
; CHECK-NEXT:    [[B6_BASE:%.*]] = phi i8 addrspace(1)* [ [[B1:%.*]], [[ENTRY]] ], [ [[B2]], [[LOOP]] ], [ [[B2]], [[LEFT]] ], !is_base_value !0
; CHECK-NEXT:    [[B6:%.*]] = phi i8 addrspace(1)* [ [[B1]], [[ENTRY]] ], [ [[B3]], [[LOOP]] ], [ [[B5]], [[LEFT]] ]
; CHECK-NEXT:    [[STATEPOINT_TOKEN:%.*]] = call token (i64, i32, void ()*, i32, i32, ...) @llvm.experimental.gc.statepoint.p0f_isVoidf(i64 2882400000, i32 0, void ()* elementtype(void ()) @foo, i32 0, i32 0, i32 0, i32 0) [ "deopt"(), "gc-live"(i8 addrspace(1)* [[B6]], i8 addrspace(1)* [[B6_BASE]]) ]
; CHECK-NEXT:    [[B6_RELOCATED:%.*]] = call coldcc i8 addrspace(1)* @llvm.experimental.gc.relocate.p1i8(token [[STATEPOINT_TOKEN]], i32 1, i32 0)
; CHECK-NEXT:    [[B6_BASE_RELOCATED:%.*]] = call coldcc i8 addrspace(1)* @llvm.experimental.gc.relocate.p1i8(token [[STATEPOINT_TOKEN]], i32 1, i32 1)
; CHECK-NEXT:    ret i8 addrspace(1)* [[B6_RELOCATED]]
;
entry:
  br i1 %c1, label %loop, label %merge2

loop:
  %b3 = phi i8 addrspace(1)* [ %b2, %entry ], [ %b5, %left ]
  %b4 = addrspacecast i8 addrspace(1)* %b3 to i8*
  br i1 %c1, label %left, label %merge2

left:
  %b5 = addrspacecast i8* %b4 to i8 addrspace(1)*
  br i1 %c2, label %loop, label %merge2

merge2:
  %b6 = phi i8 addrspace(1)* [ %b1, %entry ], [ %b3, %loop ], [ %b5, %left ]
  call void @foo() [ "deopt"() ]
  ret i8 addrspace(1)* %b6
}

define i8 addrspace(1)* @test6(i1 %c1, i1 %c2, i8 addrspace(1)* %b1, i8 addrspace(1)* %b2) gc "statepoint-example" {
; CHECK-LABEL: @test6(
; CHECK-NEXT:  entry:
; CHECK-NEXT:    br i1 [[C1:%.*]], label [[LOOP:%.*]], label [[MERGE2:%.*]]
; CHECK:       loop:
; CHECK-NEXT:    [[B3:%.*]] = phi i8 addrspace(1)* [ [[B2:%.*]], [[ENTRY:%.*]] ], [ [[B3]], [[LEFT:%.*]] ]
; CHECK-NEXT:    br i1 [[C1]], label [[LEFT]], label [[MERGE2]]
; CHECK:       left:
; CHECK-NEXT:    br i1 [[C2:%.*]], label [[LOOP]], label [[MERGE2]]
; CHECK:       merge2:
; CHECK-NEXT:    [[B6_BASE:%.*]] = phi i8 addrspace(1)* [ [[B1:%.*]], [[ENTRY]] ], [ [[B2]], [[LOOP]] ], [ [[B2]], [[LEFT]] ], !is_base_value !0
; CHECK-NEXT:    [[B6:%.*]] = phi i8 addrspace(1)* [ [[B1]], [[ENTRY]] ], [ [[B3]], [[LOOP]] ], [ [[B3]], [[LEFT]] ]
; CHECK-NEXT:    [[STATEPOINT_TOKEN:%.*]] = call token (i64, i32, void ()*, i32, i32, ...) @llvm.experimental.gc.statepoint.p0f_isVoidf(i64 2882400000, i32 0, void ()* elementtype(void ()) @foo, i32 0, i32 0, i32 0, i32 0) [ "deopt"(), "gc-live"(i8 addrspace(1)* [[B6]], i8 addrspace(1)* [[B6_BASE]]) ]
; CHECK-NEXT:    [[B6_RELOCATED:%.*]] = call coldcc i8 addrspace(1)* @llvm.experimental.gc.relocate.p1i8(token [[STATEPOINT_TOKEN]], i32 1, i32 0)
; CHECK-NEXT:    [[B6_BASE_RELOCATED:%.*]] = call coldcc i8 addrspace(1)* @llvm.experimental.gc.relocate.p1i8(token [[STATEPOINT_TOKEN]], i32 1, i32 1)
; CHECK-NEXT:    ret i8 addrspace(1)* [[B6_RELOCATED]]
;
entry:
  br i1 %c1, label %loop, label %merge2

loop:
  %b3 = phi i8 addrspace(1)* [ %b2, %entry ], [ %b4, %left ]
  br i1 %c1, label %left, label %merge2

left:
  %b4 = phi i8 addrspace(1)* [ %b3, %loop ]
  br i1 %c2, label %loop, label %merge2

merge2:
  %b6 = phi i8 addrspace(1)* [ %b1, %entry ], [ %b3, %loop ], [ %b4, %left ]
  call void @foo() [ "deopt"() ]
  ret i8 addrspace(1)* %b6
}

declare i8 addrspace(1)* @returned_arg(i8 addrspace(1)* returned %p)

define i8 addrspace(1)* @test7(i1 %c1, i1 %c2, i8 addrspace(1)* %b1, i8 addrspace(1)* %b2) gc "statepoint-example" {
; CHECK-LABEL: @test7(
; CHECK-NEXT:  entry:
; CHECK-NEXT:    br i1 [[C1:%.*]], label [[LOOP:%.*]], label [[MERGE2:%.*]]
; CHECK:       loop:
; CHECK-NEXT:    [[B3_BASE:%.*]] = phi i8 addrspace(1)* [ [[B2:%.*]], [[ENTRY:%.*]] ], [ [[B41:%.*]], [[LEFT:%.*]] ], !is_base_value !0
; CHECK-NEXT:    [[B3:%.*]] = phi i8 addrspace(1)* [ [[B2]], [[ENTRY]] ], [ [[B41]], [[LEFT]] ]
; CHECK-NEXT:    br i1 [[C1]], label [[LEFT]], label [[MERGE2]]
; CHECK:       left:
; CHECK-NEXT:    [[STATEPOINT_TOKEN:%.*]] = call token (i64, i32, i8 addrspace(1)* (i8 addrspace(1)*)*, i32, i32, ...) @llvm.experimental.gc.statepoint.p0f_p1i8p1i8f(i64 2882400000, i32 0, i8 addrspace(1)* (i8 addrspace(1)*)* elementtype(i8 addrspace(1)* (i8 addrspace(1)*)) @returned_arg, i32 1, i32 0, i8 addrspace(1)* [[B3]], i32 0, i32 0) [ "gc-live"(i8 addrspace(1)* [[B3_BASE]], i8 addrspace(1)* [[B3]]) ]
; CHECK-NEXT:    [[B41]] = call i8 addrspace(1)* @llvm.experimental.gc.result.p1i8(token [[STATEPOINT_TOKEN]])
; CHECK-NEXT:    [[B3_BASE_RELOCATED:%.*]] = call coldcc i8 addrspace(1)* @llvm.experimental.gc.relocate.p1i8(token [[STATEPOINT_TOKEN]], i32 0, i32 0)
; CHECK-NEXT:    [[B3_RELOCATED:%.*]] = call coldcc i8 addrspace(1)* @llvm.experimental.gc.relocate.p1i8(token [[STATEPOINT_TOKEN]], i32 0, i32 1)
; CHECK-NEXT:    br i1 [[C2:%.*]], label [[LOOP]], label [[MERGE2]]
; CHECK:       merge2:
; CHECK-NEXT:    [[B6_BASE:%.*]] = phi i8 addrspace(1)* [ [[B1:%.*]], [[ENTRY]] ], [ [[B3_BASE]], [[LOOP]] ], [ [[B41]], [[LEFT]] ], !is_base_value !0
; CHECK-NEXT:    [[B6:%.*]] = phi i8 addrspace(1)* [ [[B1]], [[ENTRY]] ], [ [[B3]], [[LOOP]] ], [ [[B41]], [[LEFT]] ]
; CHECK-NEXT:    [[STATEPOINT_TOKEN2:%.*]] = call token (i64, i32, void ()*, i32, i32, ...) @llvm.experimental.gc.statepoint.p0f_isVoidf(i64 2882400000, i32 0, void ()* elementtype(void ()) @foo, i32 0, i32 0, i32 0, i32 0) [ "deopt"(), "gc-live"(i8 addrspace(1)* [[B6]], i8 addrspace(1)* [[B6_BASE]]) ]
; CHECK-NEXT:    [[B6_RELOCATED:%.*]] = call coldcc i8 addrspace(1)* @llvm.experimental.gc.relocate.p1i8(token [[STATEPOINT_TOKEN2]], i32 1, i32 0)
; CHECK-NEXT:    [[B6_BASE_RELOCATED:%.*]] = call coldcc i8 addrspace(1)* @llvm.experimental.gc.relocate.p1i8(token [[STATEPOINT_TOKEN2]], i32 1, i32 1)
; CHECK-NEXT:    ret i8 addrspace(1)* [[B6_RELOCATED]]
;
entry:
  br i1 %c1, label %loop, label %merge2

loop:
  %b3 = phi i8 addrspace(1)* [ %b2, %entry ], [ %b4, %left ]
  br i1 %c1, label %left, label %merge2

left:
  %b4 = call i8 addrspace(1)* @returned_arg(i8 addrspace(1)* %b3)
  br i1 %c2, label %loop, label %merge2

merge2:
  %b6 = phi i8 addrspace(1)* [ %b1, %entry ], [ %b3, %loop ], [ %b4, %left ]
  call void @foo() [ "deopt"() ]
  ret i8 addrspace(1)* %b6
}

define i8 addrspace(1)* @test8(i1 %c, i32 %n, i8 addrspace(1)* %b1, i8 addrspace(1)* %b2) gc "statepoint-example" {
; CHECK-LABEL: @test8(
; CHECK-NEXT:  entry:
; CHECK-NEXT:    br label [[LEFT:%.*]]
; CHECK:       left:
; CHECK-NEXT:    br i1 [[C:%.*]], label [[LOOP:%.*]], label [[MERGE2:%.*]]
; CHECK:       loop:
; CHECK-NEXT:    [[B3:%.*]] = phi i8 addrspace(1)* [ [[B2:%.*]], [[LEFT]] ], [ [[B5:%.*]], [[LOOP]] ], [ [[B5]], [[LOOP]] ]
; CHECK-NEXT:    [[B4:%.*]] = bitcast i8 addrspace(1)* [[B3]] to i32 addrspace(1)*
; CHECK-NEXT:    [[B5]] = bitcast i32 addrspace(1)* [[B4]] to i8 addrspace(1)*
; CHECK-NEXT:    switch i32 [[N:%.*]], label [[MERGE2]] [
; CHECK-NEXT:    i32 0, label [[LOOP]]
; CHECK-NEXT:    i32 1, label [[LOOP]]
; CHECK-NEXT:    i32 2, label [[LEFT]]
; CHECK-NEXT:    ]
; CHECK:       merge2:
; CHECK-NEXT:    [[B6_BASE:%.*]] = phi i8 addrspace(1)* [ [[B1:%.*]], [[LEFT]] ], [ [[B2]], [[LOOP]] ], !is_base_value !0
; CHECK-NEXT:    [[B6:%.*]] = phi i8 addrspace(1)* [ [[B1]], [[LEFT]] ], [ [[B5]], [[LOOP]] ]
; CHECK-NEXT:    [[STATEPOINT_TOKEN:%.*]] = call token (i64, i32, void ()*, i32, i32, ...) @llvm.experimental.gc.statepoint.p0f_isVoidf(i64 2882400000, i32 0, void ()* elementtype(void ()) @foo, i32 0, i32 0, i32 0, i32 0) [ "deopt"(), "gc-live"(i8 addrspace(1)* [[B6]], i8 addrspace(1)* [[B6_BASE]]) ]
; CHECK-NEXT:    [[B6_RELOCATED:%.*]] = call coldcc i8 addrspace(1)* @llvm.experimental.gc.relocate.p1i8(token [[STATEPOINT_TOKEN]], i32 1, i32 0)
; CHECK-NEXT:    [[B6_BASE_RELOCATED:%.*]] = call coldcc i8 addrspace(1)* @llvm.experimental.gc.relocate.p1i8(token [[STATEPOINT_TOKEN]], i32 1, i32 1)
; CHECK-NEXT:    ret i8 addrspace(1)* [[B6_RELOCATED]]
;
entry:
  br label %left

left:
  br i1 %c, label %loop, label %merge2

loop:
  %b3 = phi i8 addrspace(1)* [ %b2, %left ], [ %b5, %loop ], [ %b5, %loop ]
  %b4 = bitcast i8 addrspace(1)* %b3 to i32 addrspace(1)*
  %b5 = bitcast i32 addrspace(1)* %b4 to i8 addrspace(1)*
  switch i32 %n, label %merge2 [ i32 0, label %loop
  i32 1, label %loop
  i32 2, label %left ]

merge2:
  %b6 = phi i8 addrspace(1)* [ %b1, %left ], [ %b5, %loop ]
  call void @foo() [ "deopt"() ]
  ret i8 addrspace(1)* %b6
}