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Add a new test case for the StrNCmpOptimization.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21658 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Reid Spencer 2005-05-03 00:50:43 +00:00
parent a1b4390938
commit d2db880222
1 changed files with 26 additions and 0 deletions
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26
test/Transforms/SimplifyLibCalls/StrNCmp.ll Normal file
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; 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
}