From 155c5e75fb0cb8b9ba8c94ad43c96f63b2df0cfe Mon Sep 17 00:00:00 2001 From: Sean Silva Date: Wed, 15 Jul 2015 23:23:02 +0000 Subject: [PATCH] Add a test for r242281 from an old patch of mine. This isn't thorough, but should serve as a sanity check. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@242356 91177308-0d34-0410-b5e6-96231b3b80d8 --- test/Analysis/GlobalsModRef/atomic-instrs.ll | 37 ++++++++++++++++++++++++++++ 1 file changed, 37 insertions(+) create mode 100644 test/Analysis/GlobalsModRef/atomic-instrs.ll diff --git a/test/Analysis/GlobalsModRef/atomic-instrs.ll b/test/Analysis/GlobalsModRef/atomic-instrs.ll new file mode 100644 index 00000000000..9e163ec4d20 --- /dev/null +++ b/test/Analysis/GlobalsModRef/atomic-instrs.ll @@ -0,0 +1,37 @@ +; RUN: opt < %s -globalsmodref-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 +} -- 2.11.0