38 lines
886 B
LLVM
38 lines
886 B
LLVM
; RUN: opt < %s -globals-aa -gvn -S | FileCheck %s
|
|
|
|
@X = internal global i32 4
|
|
|
|
define i32 @test_cmpxchg(i32* %P) {
|
|
; CHECK-LABEL: @test_cmpxchg
|
|
; CHECK-NEXT: store i32 12, i32* @X
|
|
; CHECK-NEXT: call void @modrefX_cmpxchg()
|
|
; CHECK-NEXT: %V = load i32, i32* @X
|
|
; CHECK-NEXT: ret i32 %V
|
|
store i32 12, i32* @X
|
|
call void @modrefX_cmpxchg()
|
|
%V = load i32, i32* @X
|
|
ret i32 %V
|
|
}
|
|
|
|
define void @modrefX_cmpxchg() {
|
|
%1 = cmpxchg i32* @X, i32 0, i32 -1 monotonic monotonic
|
|
ret void
|
|
}
|
|
|
|
define i32 @test_atomicrmw(i32* %P) {
|
|
; CHECK-LABEL: @test_atomicrmw
|
|
; CHECK-NEXT: store i32 12, i32* @X
|
|
; CHECK-NEXT: call void @modrefXatomicrmw()
|
|
; CHECK-NEXT: %V = load i32, i32* @X
|
|
; CHECK-NEXT: ret i32 %V
|
|
store i32 12, i32* @X
|
|
call void @modrefXatomicrmw()
|
|
%V = load i32, i32* @X
|
|
ret i32 %V
|
|
}
|
|
|
|
define void @modrefXatomicrmw() {
|
|
%1 = atomicrmw add i32* @X, i32 1 acquire
|
|
ret void
|
|
}
|