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Diffstat (limited to 'test/Transforms/SimplifyLibCalls/MemCpy.ll')
| -rw-r--r-- | test/Transforms/SimplifyLibCalls/MemCpy.ll | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/test/Transforms/SimplifyLibCalls/MemCpy.ll b/test/Transforms/SimplifyLibCalls/MemCpy.ll new file mode 100644 index 000000000000..4e33b0755f94 --- /dev/null +++ b/test/Transforms/SimplifyLibCalls/MemCpy.ll @@ -0,0 +1,20 @@ +; RUN: llvm-as < %s | opt -constprop -instcombine | llvm-dis | not grep {call.*llvm.memcpy.i32} + +@h = constant [2 x i8] c"h\00" ; <[2 x i8]*> [#uses=1] +@hel = constant [4 x i8] c"hel\00" ; <[4 x i8]*> [#uses=1] +@hello_u = constant [8 x i8] c"hello_u\00" ; <[8 x i8]*> [#uses=1] + +declare void @llvm.memcpy.i32(i8*, i8*, i32, i32) + +define i32 @main() { + %h_p = getelementptr [2 x i8]* @h, i32 0, i32 0 ; <i8*> [#uses=1] + %hel_p = getelementptr [4 x i8]* @hel, i32 0, i32 0 ; <i8*> [#uses=1] + %hello_u_p = getelementptr [8 x i8]* @hello_u, i32 0, i32 0 ; <i8*> [#uses=1] + %target = alloca [1024 x i8] ; <[1024 x i8]*> [#uses=1] + %target_p = getelementptr [1024 x i8]* %target, i32 0, i32 0 ; <i8*> [#uses=3] + call void @llvm.memcpy.i32( i8* %target_p, i8* %h_p, i32 2, i32 2 ) + call void @llvm.memcpy.i32( i8* %target_p, i8* %hel_p, i32 4, i32 4 ) + call void @llvm.memcpy.i32( i8* %target_p, i8* %hello_u_p, i32 8, i32 8 ) + ret i32 0 +} + |