diff options
| -rw-r--r-- | test/Transforms/InstCombine/call-intrinsics.ll | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/test/Transforms/InstCombine/call-intrinsics.ll b/test/Transforms/InstCombine/call-intrinsics.ll new file mode 100644 index 0000000000..07435c4a3b --- /dev/null +++ b/test/Transforms/InstCombine/call-intrinsics.ll @@ -0,0 +1,17 @@ +; RUN: llvm-as < %s | opt -instcombine | llvm-dis + +declare void %llvm.memmove(sbyte*, sbyte*, uint, uint) +declare void %llvm.memcpy(sbyte*, sbyte*, uint, uint) +declare void %llvm.memset(sbyte*, ubyte, uint, uint) + +%X = global sbyte 0 +%Y = global sbyte 12 + +void %zero_byte_test() { + ; These process zero bytes, so they are a noop. + call void %llvm.memmove(sbyte* %X, sbyte* %Y, uint 0, uint 100) + call void %llvm.memcpy(sbyte* %X, sbyte* %Y, uint 0, uint 100) + call void %llvm.memset(sbyte* %X, ubyte 123, uint 0, uint 100) + ret void +} + |