mirror of
https://github.com/RPCS3/llvm.git
synced 2024-12-05 18:28:29 +00:00
89e0f4b5b0
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138964 91177308-0d34-0410-b5e6-96231b3b80d8
31 lines
644 B
LLVM
31 lines
644 B
LLVM
; RUN: opt < %s -ipsccp -S | FileCheck %s
|
|
|
|
; This transformation is safe for atomic loads and stores; check that it works.
|
|
|
|
@G = internal global i32 17
|
|
@C = internal constant i32 222
|
|
|
|
define i32 @test1() {
|
|
%V = load atomic i32* @G seq_cst, align 4
|
|
%C = icmp eq i32 %V, 17
|
|
br i1 %C, label %T, label %F
|
|
T:
|
|
store atomic i32 17, i32* @G seq_cst, align 4
|
|
ret i32 %V
|
|
F:
|
|
store atomic i32 123, i32* @G seq_cst, align 4
|
|
ret i32 0
|
|
}
|
|
; CHECK: define i32 @test1
|
|
; CHECK-NOT: store
|
|
; CHECK: ret i32 17
|
|
|
|
define i32 @test2() {
|
|
%V = load atomic i32* @C seq_cst, align 4
|
|
ret i32 %V
|
|
}
|
|
|
|
; CHECK: define i32 @test2
|
|
; CHECK-NOT: load
|
|
; CHECK: ret i32 222
|