fix PR8267 - Instcombine shouldn't optimizer away volatile memcpy's.

[oota-llvm.git] / test / Transforms / InstCombine / memcpy.ll

diff --git a/test/Transforms/InstCombine/memcpy.ll b/test/Transforms/InstCombine/memcpy.ll
index 421156d77129336eed9fe39e6f3d71cdb18435f6..8a2e3aaad0270662277ba4d1ed2fa3433f1322fc 100644 (file)
--- a/test/Transforms/InstCombine/memcpy.ll
+++ b/test/Transforms/InstCombine/memcpy.ll
@@ -2,9 +2,18 @@
 
 declare void @llvm.memcpy.p0i8.p0i8.i32(i8* nocapture, i8* nocapture, i32, i32, i1) nounwind
 
-define void @test4(i8* %a) {
+define void @test1(i8* %a) {
         tail call void @llvm.memcpy.p0i8.p0i8.i32(i8* %a, i8* %a, i32 100, i32 1, i1 false)
         ret void
-}
-; CHECK: define void @test4
+; CHECK: define void @test1
 ; CHECK-NEXT: ret void
+}
+
+
+; PR8267
+define void @test2(i8* %a) {
+        tail call void @llvm.memcpy.p0i8.p0i8.i32(i8* %a, i8* %a, i32 100, i32 1, i1 true)
+        ret void
+; CHECK: define void @test2
+; CHECK-NEXT: call void @llvm.memcpy
+}