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Diffstat (limited to 'test/Transforms/InstCombine/2007-10-10-EliminateMemCpy.ll')
| -rw-r--r-- | test/Transforms/InstCombine/2007-10-10-EliminateMemCpy.ll | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/test/Transforms/InstCombine/2007-10-10-EliminateMemCpy.ll b/test/Transforms/InstCombine/2007-10-10-EliminateMemCpy.ll new file mode 100644 index 000000000000..6d251b12cf4f --- /dev/null +++ b/test/Transforms/InstCombine/2007-10-10-EliminateMemCpy.ll @@ -0,0 +1,20 @@ +; RUN: llvm-as < %s | opt -instcombine | llvm-dis | not grep call +; RUN: llvm-as < %s | opt -std-compile-opts | llvm-dis | not grep xyz + +@.str = internal constant [4 x i8] c"xyz\00" ; <[4 x i8]*> [#uses=1] + +define void @foo(i8* %P) { +entry: + %P_addr = alloca i8* ; <i8**> [#uses=2] + %"alloca point" = bitcast i32 0 to i32 ; <i32> [#uses=0] + store i8* %P, i8** %P_addr + %tmp = load i8** %P_addr, align 4 ; <i8*> [#uses=1] + %tmp1 = getelementptr [4 x i8]* @.str, i32 0, i32 0 ; <i8*> [#uses=1] + call void @llvm.memcpy.i32( i8* %tmp, i8* %tmp1, i32 4, i32 1 ) + br label %return + +return: ; preds = %entry + ret void +} + +declare void @llvm.memcpy.i32(i8*, i8*, i32, i32) |