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; 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
}
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