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author | Reid Spencer <rspencer@reidspencer.com> | 2005-05-03 00:50:43 +0000 |
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committer | Reid Spencer <rspencer@reidspencer.com> | 2005-05-03 00:50:43 +0000 |
commit | d2db880222cfc8ac471a1fa4c3a5a83309c1d595 (patch) | |
tree | 5a643c861a30f6f940fc4c70956812e91a96614b /test/Transforms/SimplifyLibCalls/StrNCmp.ll | |
parent | a1b43909389a06186394cb895ad18a7d25ea050f (diff) | |
download | external_llvm-d2db880222cfc8ac471a1fa4c3a5a83309c1d595.zip external_llvm-d2db880222cfc8ac471a1fa4c3a5a83309c1d595.tar.gz external_llvm-d2db880222cfc8ac471a1fa4c3a5a83309c1d595.tar.bz2 |
Add a new test case for the StrNCmpOptimization.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21658 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/Transforms/SimplifyLibCalls/StrNCmp.ll')
-rw-r--r-- | test/Transforms/SimplifyLibCalls/StrNCmp.ll | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/test/Transforms/SimplifyLibCalls/StrNCmp.ll b/test/Transforms/SimplifyLibCalls/StrNCmp.ll new file mode 100644 index 0000000..1b16149 --- /dev/null +++ b/test/Transforms/SimplifyLibCalls/StrNCmp.ll @@ -0,0 +1,26 @@ +; Test that the StrCmpOptimizer works correctly +; RUN: llvm-as < %s | opt -simplify-libcalls | llvm-dis | not grep 'call.*strcmp' + +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 +} |