diff options
Diffstat (limited to 'llvm/test/Transforms/ScalarRepl/2009-03-04-MemCpyAlign.ll')
| -rw-r--r-- | llvm/test/Transforms/ScalarRepl/2009-03-04-MemCpyAlign.ll | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/llvm/test/Transforms/ScalarRepl/2009-03-04-MemCpyAlign.ll b/llvm/test/Transforms/ScalarRepl/2009-03-04-MemCpyAlign.ll new file mode 100644 index 00000000000..4fc491b2979 --- /dev/null +++ b/llvm/test/Transforms/ScalarRepl/2009-03-04-MemCpyAlign.ll @@ -0,0 +1,19 @@ +; The store into %p should end up with a known alignment of 1, since the memcpy +; is only known to access it with 1-byte alignment. +; RUN: llvm-as < %s | opt -scalarrepl | llvm-dis | grep {store i16 1, .*, align 1} +; PR3720 + + %struct.st = type { i16 } + +define void @f(i8* %p) nounwind { +entry: + %s = alloca %struct.st, align 4 ; <%struct.st*> [#uses=2] + %0 = getelementptr %struct.st* %s, i32 0, i32 0 ; <i16*> [#uses=1] + store i16 1, i16* %0, align 4 + %s1 = bitcast %struct.st* %s to i8* ; <i8*> [#uses=1] + call void @llvm.memcpy.i32(i8* %p, i8* %s1, i32 2, i32 1) + ret void +} + +declare void @llvm.memcpy.i32(i8* nocapture, i8* nocapture, i32, i32) nounwind + |
