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A new test case for the StrCmpOptimization in -simplify-libcalls. 

llvm-svn: 21623
This commit is contained in:
Reid Spencer 2005-04-30 00:52:04 +00:00
parent 1279398b1c
commit 89339ffb22
1 changed files with 26 additions and 0 deletions
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26
llvm/test/Regression/Transforms/SimplifyLibCalls/StrCmp.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 %strcmp(sbyte*,sbyte*)
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 %strcmp(sbyte* %hello_p, sbyte* %hello_p)
%temp2 = call int %strcmp(sbyte* %null_p, sbyte* %null_p)
%temp3 = call int %strcmp(sbyte* %hello_p, sbyte* %null_p)
%temp4 = call int %strcmp(sbyte* %null_p, sbyte* %hello_p)
%temp5 = call int %strcmp(sbyte* %hell_p, sbyte* %hello_p)
%rslt1 = add int %temp1, %temp2
%rslt2 = add int %rslt1, %temp3
%rslt3 = add int %rslt2, %temp4
%rslt4 = add int %rslt3, %temp5
ret int %rslt4
}