[tsan] make sure memset/memcpy/memmove are not inlined in tsan mode

[oota-llvm.git] / test / Instrumentation / ThreadSanitizer / tsan_basic.ll

diff --git a/test/Instrumentation/ThreadSanitizer/tsan_basic.ll b/test/Instrumentation/ThreadSanitizer/tsan_basic.ll
index 33c703b4c9bd8e1f74e4e07e576e4124030885b6..0ecff40493a240271f57d2f62e15a1247cdde5d7 100644 (file)
--- a/test/Instrumentation/ThreadSanitizer/tsan_basic.ll
+++ b/test/Instrumentation/ThreadSanitizer/tsan_basic.ll
@@ -20,3 +20,36 @@ entry:
 ; CHECK: ret i32
 
 
+declare void @llvm.memcpy.p0i8.p0i8.i64(i8* nocapture, i8* nocapture, i64, i32, i1)
+declare void @llvm.memmove.p0i8.p0i8.i64(i8* nocapture, i8* nocapture, i64, i32, i1)
+declare void @llvm.memset.p0i8.i64(i8* nocapture, i8, i64, i32, i1)
+
+
+; Check that tsan converts mem intrinsics back to function calls.
+
+define void @MemCpyTest(i8* nocapture %x, i8* nocapture %y) {
+entry:
+    tail call void @llvm.memcpy.p0i8.p0i8.i64(i8* %x, i8* %y, i64 16, i32 4, i1 false)
+    ret void
+; CHECK: define void @MemCpyTest
+; CHECK: call i8* @memcpy
+; CHECK: ret void
+}
+
+define void @MemMoveTest(i8* nocapture %x, i8* nocapture %y) {
+entry:
+    tail call void @llvm.memmove.p0i8.p0i8.i64(i8* %x, i8* %y, i64 16, i32 4, i1 false)
+    ret void
+; CHECK: define void @MemMoveTest
+; CHECK: call i8* @memmove
+; CHECK: ret void
+}
+
+define void @MemSetTest(i8* nocapture %x)  {
+entry:
+    tail call void @llvm.memset.p0i8.i64(i8* %x, i8 77, i64 16, i32 4, i1 false)
+    ret void
+; CHECK define void @MemSetTest
+; CHECK: call i8* @memset
+; CHECK: ret void
+}