Add an atomic lowering pass

[oota-llvm.git] / test / Transforms / LowerAtomic / atomic-swap.ll

diff --git a/test/Transforms/LowerAtomic/atomic-swap.ll b/test/Transforms/LowerAtomic/atomic-swap.ll
new file mode 100644 (file)
index 0000000..0a59c85
--- /dev/null
+++ b/test/Transforms/LowerAtomic/atomic-swap.ll
@@ -0,0 +1,26 @@
+; RUN: opt < %s -loweratomic -S | FileCheck %s
+
+declare i8 @llvm.atomic.cmp.swap.i8.p0i8(i8* %ptr, i8 %cmp, i8 %val)
+declare i8 @llvm.atomic.swap.i8.p0i8(i8* %ptr, i8 %val)
+
+define i8 @cmpswap() {
+; CHECK: @cmpswap
+  %i = alloca i8
+  %j = call i8 @llvm.atomic.cmp.swap.i8.p0i8(i8* %i, i8 0, i8 42)
+; CHECK: [[INST:%[a-z0-9]+]] = load
+; CHECK-NEXT: icmp
+; CHECK-NEXT: select
+; CHECK-NEXT: store
+  ret i8 %j
+; CHECK: ret i8 [[INST]]
+}
+
+define i8 @swap() {
+; CHECK: @swap
+  %i = alloca i8
+  %j = call i8 @llvm.atomic.swap.i8.p0i8(i8* %i, i8 42)
+; CHECK: [[INST:%[a-z0-9]+]] = load
+; CHECK-NEXT: store
+  ret i8 %j
+; CHECK: ret i8 [[INST]]
+}