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Diffstat (limited to 'test/Transforms/SimplifyLibCalls/memcmp.ll')
-rw-r--r-- | test/Transforms/SimplifyLibCalls/memcmp.ll | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/test/Transforms/SimplifyLibCalls/memcmp.ll b/test/Transforms/SimplifyLibCalls/memcmp.ll new file mode 100644 index 0000000..640d232 --- /dev/null +++ b/test/Transforms/SimplifyLibCalls/memcmp.ll @@ -0,0 +1,23 @@ +; Test that the memcmpOptimizer works correctly +; RUN: opt < %s -simplify-libcalls -S | not grep {call.*memcmp} + +@h = constant [2 x i8] c"h\00" ; <[2 x i8]*> [#uses=0] +@hel = constant [4 x i8] c"hel\00" ; <[4 x i8]*> [#uses=0] +@hello_u = constant [8 x i8] c"hello_u\00" ; <[8 x i8]*> [#uses=0] + +declare i32 @memcmp(i8*, i8*, i32) + +define void @test(i8* %P, i8* %Q, i32 %N, i32* %IP, i1* %BP) { + %A = call i32 @memcmp( i8* %P, i8* %P, i32 %N ) ; <i32> [#uses=1] + volatile store i32 %A, i32* %IP + %B = call i32 @memcmp( i8* %P, i8* %Q, i32 0 ) ; <i32> [#uses=1] + volatile store i32 %B, i32* %IP + %C = call i32 @memcmp( i8* %P, i8* %Q, i32 1 ) ; <i32> [#uses=1] + volatile store i32 %C, i32* %IP + %F = call i32 @memcmp(i8* getelementptr ([4 x i8]* @hel, i32 0, i32 0), + i8* getelementptr ([8 x i8]* @hello_u, i32 0, i32 0), + i32 3) + volatile store i32 %F, i32* %IP + ret void +} + |