mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-11-22 18:54:02 +01:00
59f9149f4e
The MemorySSA-based implementation has been enabled without issue for a while now, so keeping the old implementation around doesn't seem useful anymore. This drops the MemDep-based implementation. Differential Revision: https://reviews.llvm.org/D97877
35 lines
1020 B
LLVM
35 lines
1020 B
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
|
|
; RUN: opt -S -scoped-noalias-aa -dse < %s | FileCheck %s
|
|
|
|
; Assume that %p1 != %p2 if and only if %c is true. In that case the noalias
|
|
; metadata is correct, but the first store cannot be eliminated, as it may be
|
|
; read-clobbered by the load.
|
|
define void @test(i1 %c, i8* %p1, i8* %p2) {
|
|
; CHECK-LABEL: @test(
|
|
; CHECK-NEXT: store i8 0, i8* [[P1:%.*]], align 1
|
|
; CHECK-NEXT: [[TMP1:%.*]] = load i8, i8* [[P2:%.*]], align 1, !alias.scope !0
|
|
; CHECK-NEXT: br i1 [[C:%.*]], label [[IF:%.*]], label [[ELSE:%.*]]
|
|
; CHECK: if:
|
|
; CHECK-NEXT: store i8 1, i8* [[P1]], align 1, !noalias !0
|
|
; CHECK-NEXT: ret void
|
|
; CHECK: else:
|
|
; CHECK-NEXT: store i8 2, i8* [[P1]], align 1
|
|
; CHECK-NEXT: ret void
|
|
;
|
|
store i8 0, i8* %p1
|
|
load i8, i8* %p2, !alias.scope !2
|
|
br i1 %c, label %if, label %else
|
|
|
|
if:
|
|
store i8 1, i8* %p1, !noalias !2
|
|
ret void
|
|
|
|
else:
|
|
store i8 2, i8* %p1
|
|
ret void
|
|
}
|
|
|
|
!0 = !{!0}
|
|
!1 = !{!1, !0}
|
|
!2 = !{!1}
|