diff options
| author | Ed Schouten <ed@FreeBSD.org> | 2009-06-02 17:52:33 +0000 |
|---|---|---|
| committer | Ed Schouten <ed@FreeBSD.org> | 2009-06-02 17:52:33 +0000 |
| commit | 009b1c42aa6266385f2c37e227516b24077e6dd7 (patch) | |
| tree | 64ba909838c23261cace781ece27d106134ea451 /test/Transforms/SimplifyLibCalls/memcmp.ll | |
Diffstat (limited to 'test/Transforms/SimplifyLibCalls/memcmp.ll')
| -rw-r--r-- | test/Transforms/SimplifyLibCalls/memcmp.ll | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/test/Transforms/SimplifyLibCalls/memcmp.ll b/test/Transforms/SimplifyLibCalls/memcmp.ll new file mode 100644 index 0000000000000..7bdbc8d17e4f9 --- /dev/null +++ b/test/Transforms/SimplifyLibCalls/memcmp.ll @@ -0,0 +1,22 @@ +; Test that the memcmpOptimizer works correctly +; RUN: llvm-as < %s | opt -simplify-libcalls | llvm-dis | 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 + %D = call i32 @memcmp( i8* %P, i8* %Q, i32 2 ) ; <i32> [#uses=1] + %E = icmp eq i32 %D, 0 ; <i1> [#uses=1] + volatile store i1 %E, i1* %BP + ret void +} + |