diff options
Diffstat (limited to 'test/Transforms/SimplifyLibCalls/memcmp.ll')
| -rw-r--r-- | test/Transforms/SimplifyLibCalls/memcmp.ll | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/test/Transforms/SimplifyLibCalls/memcmp.ll b/test/Transforms/SimplifyLibCalls/memcmp.ll new file mode 100644 index 0000000..bea9eed --- /dev/null +++ b/test/Transforms/SimplifyLibCalls/memcmp.ll @@ -0,0 +1,24 @@ +; Test that the memcmpOptimizer works correctly +; RUN: llvm-upgrade < %s | llvm-as | opt -simplify-libcalls | llvm-dis | \ +; RUN: not grep {call.*memcmp} +; RUN: llvm-upgrade < %s | llvm-as | opt -simplify-libcalls -disable-output + +declare int %memcmp(sbyte*,sbyte*,int) +%h = constant [2 x sbyte] c"h\00" +%hel = constant [4 x sbyte] c"hel\00" +%hello_u = constant [8 x sbyte] c"hello_u\00" + +implementation + +void %test(sbyte *%P, sbyte *%Q, int %N, int* %IP, bool *%BP) { + %A = call int %memcmp(sbyte *%P, sbyte* %P, int %N) + volatile store int %A, int* %IP + %B = call int %memcmp(sbyte *%P, sbyte* %Q, int 0) + volatile store int %B, int* %IP + %C = call int %memcmp(sbyte *%P, sbyte* %Q, int 1) + volatile store int %C, int* %IP + %D = call int %memcmp(sbyte *%P, sbyte* %Q, int 2) + %E = seteq int %D, 0 + volatile store bool %E, bool* %BP + ret void +} |