| ; Test that the memcmpOptimizer works correctly |
| ; RUN: llvm-as < %s | opt -simplify-libcalls | llvm-dis | not grep 'call.*memcmp' && |
| ; RUN: llvm-as < %s | 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 |
| } |