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Diffstat (limited to 'test/Transforms/InstCombine/call-intrinsics.ll')
| -rw-r--r-- | test/Transforms/InstCombine/call-intrinsics.ll | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/test/Transforms/InstCombine/call-intrinsics.ll b/test/Transforms/InstCombine/call-intrinsics.ll new file mode 100644 index 0000000..f9d1080 --- /dev/null +++ b/test/Transforms/InstCombine/call-intrinsics.ll @@ -0,0 +1,19 @@ +; RUN: opt < %s -instcombine | llvm-dis + +@X = global i8 0 ; <i8*> [#uses=3] +@Y = global i8 12 ; <i8*> [#uses=2] + +declare void @llvm.memmove.i32(i8*, i8*, i32, i32) + +declare void @llvm.memcpy.i32(i8*, i8*, i32, i32) + +declare void @llvm.memset.i32(i8*, i8, i32, i32) + +define void @zero_byte_test() { + ; These process zero bytes, so they are a noop. + call void @llvm.memmove.i32( i8* @X, i8* @Y, i32 0, i32 100 ) + call void @llvm.memcpy.i32( i8* @X, i8* @Y, i32 0, i32 100 ) + call void @llvm.memset.i32( i8* @X, i8 123, i32 0, i32 100 ) + ret void +} + |