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28 lines
1.0 KiB
LLVM
28 lines
1.0 KiB
LLVM
; Test that the StrNCmpOptimizer works correctly
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; RUN: llvm-upgrade < %s | llvm-as | opt -simplify-libcalls | llvm-dis | \
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; RUN: not grep {call.*strncmp}
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declare int %strncmp(sbyte*,sbyte*,int)
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declare int %puts(sbyte*)
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%hello = constant [6 x sbyte] c"hello\00"
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%hell = constant [5 x sbyte] c"hell\00"
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%null = constant [1 x sbyte] c"\00"
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implementation ; Functions:
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int %main () {
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%hello_p = getelementptr [6 x sbyte]* %hello, int 0, int 0
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%hell_p = getelementptr [5 x sbyte]* %hell, int 0, int 0
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%null_p = getelementptr [1 x sbyte]* %null, int 0, int 0
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%temp1 = call int %strncmp(sbyte* %hello_p, sbyte* %hello_p,int 5)
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%temp2 = call int %strncmp(sbyte* %null_p, sbyte* %null_p,int 0)
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%temp3 = call int %strncmp(sbyte* %hello_p, sbyte* %null_p,int 0)
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%temp4 = call int %strncmp(sbyte* %null_p, sbyte* %hello_p,int 0)
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%temp5 = call int %strncmp(sbyte* %hell_p, sbyte* %hello_p,int 4)
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%rslt1 = add int %temp1, %temp2
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%rslt2 = add int %rslt1, %temp3
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%rslt3 = add int %rslt2, %temp4
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%rslt4 = add int %rslt3, %temp5
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ret int %rslt4
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}
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