1 ; RUN: opt < %s -globals-aa -gvn -S | FileCheck %s 2 3 @X = internal global i32 4 4 5 define i32 @test_cmpxchg(i32* %P) { 6 ; CHECK-LABEL: @test_cmpxchg 7 ; CHECK-NEXT: store i32 12, i32* @X 8 ; CHECK-NEXT: call void @modrefX_cmpxchg() 9 ; CHECK-NEXT: %V = load i32, i32* @X 10 ; CHECK-NEXT: ret i32 %V 11 store i32 12, i32* @X 12 call void @modrefX_cmpxchg() 13 %V = load i32, i32* @X 14 ret i32 %V 15 } 16 17 define void @modrefX_cmpxchg() { 18 %1 = cmpxchg i32* @X, i32 0, i32 -1 monotonic monotonic 19 ret void 20 } 21 22 define i32 @test_atomicrmw(i32* %P) { 23 ; CHECK-LABEL: @test_atomicrmw 24 ; CHECK-NEXT: store i32 12, i32* @X 25 ; CHECK-NEXT: call void @modrefXatomicrmw() 26 ; CHECK-NEXT: %V = load i32, i32* @X 27 ; CHECK-NEXT: ret i32 %V 28 store i32 12, i32* @X 29 call void @modrefXatomicrmw() 30 %V = load i32, i32* @X 31 ret i32 %V 32 } 33 34 define void @modrefXatomicrmw() { 35 %1 = atomicrmw add i32* @X, i32 1 acquire 36 ret void 37 } 38