diff options
Diffstat (limited to 'llvm/test/Transforms/SimplifyLibCalls/StrNCmp.ll')
| -rw-r--r-- | llvm/test/Transforms/SimplifyLibCalls/StrNCmp.ll | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/llvm/test/Transforms/SimplifyLibCalls/StrNCmp.ll b/llvm/test/Transforms/SimplifyLibCalls/StrNCmp.ll new file mode 100644 index 00000000000..278861a9acd --- /dev/null +++ b/llvm/test/Transforms/SimplifyLibCalls/StrNCmp.ll @@ -0,0 +1,26 @@ +; Test that the StrNCmpOptimizer works correctly +; RUN: llvm-upgrade < %s | llvm-as | opt -simplify-libcalls | llvm-dis | not grep 'call.*strncmp' + +declare int %strncmp(sbyte*,sbyte*,int) +declare int %puts(sbyte*) +%hello = constant [6 x sbyte] c"hello\00" +%hell = constant [5 x sbyte] c"hell\00" +%null = constant [1 x sbyte] c"\00" + +implementation ; Functions: + +int %main () { + %hello_p = getelementptr [6 x sbyte]* %hello, int 0, int 0 + %hell_p = getelementptr [5 x sbyte]* %hell, int 0, int 0 + %null_p = getelementptr [1 x sbyte]* %null, int 0, int 0 + %temp1 = call int %strncmp(sbyte* %hello_p, sbyte* %hello_p,int 5) + %temp2 = call int %strncmp(sbyte* %null_p, sbyte* %null_p,int 0) + %temp3 = call int %strncmp(sbyte* %hello_p, sbyte* %null_p,int 0) + %temp4 = call int %strncmp(sbyte* %null_p, sbyte* %hello_p,int 0) + %temp5 = call int %strncmp(sbyte* %hell_p, sbyte* %hello_p,int 4) + %rslt1 = add int %temp1, %temp2 + %rslt2 = add int %rslt1, %temp3 + %rslt3 = add int %rslt2, %temp4 + %rslt4 = add int %rslt3, %temp5 + ret int %rslt4 +} |
