1 files changed, 24 insertions, 0 deletions
diff --git a/test/Transforms/InstCombine/atomic.ll b/test/Transforms/InstCombine/atomic.ll
new file mode 100644
index 0000000..097cf5e
--- /dev/null
+++ b/test/Transforms/InstCombine/atomic.ll
@@ -0,0 +1,24 @@
+; RUN: opt -S < %s -instcombine | FileCheck %s
+
+target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64"
+target triple = "x86_64-apple-macosx10.7.0"
+
+; Check transforms involving atomic operations
+
+define i32* @test1(i8** %p) {
+; CHECK: define i32* @test1
+; CHECK: load atomic i8** %p monotonic, align 8
+  %c = bitcast i8** %p to i32**
+  %r = load atomic i32** %c monotonic, align 8
+  ret i32* %r
+}
+
+define i32 @test2(i32* %p) {
+; CHECK: define i32 @test2
+; CHECK: %x = load atomic i32* %p seq_cst, align 4
+; CHECK: shl i32 %x, 1
+  %x = load atomic i32* %p seq_cst, align 4
+  %y = load i32* %p, align 4
+  %z = add i32 %x, %y
+  ret i32 %z
+}