xref: /llvm-project-15.0.7/llvm/test/Transforms/RewriteStatepointsForGC/base-pointers-14.ll (revision 2603dcdd)

; 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
}

; FIXME: In this test case %b5.base and %b6.base (inserted by RS4GC) are
; identical to %b5 and %b6 ; correspondingly.
define i8 addrspace(1)* @test2(i1 %c, i8 addrspace(1)* %b1, i8 addrspace(1)* %b2) gc "statepoint-example" {
; CHECK-LABEL: @test2(
; 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
}