forked from OSchip/llvm-project
24 lines
820 B
LLVM
24 lines
820 B
LLVM
; Test that the memcmpOptimizer works correctly
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; RUN: llvm-as < %s | opt -simplify-libcalls | llvm-dis | not grep 'call.*memcmp' &&
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; RUN: llvm-as < %s | opt -simplify-libcalls -disable-output
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declare int %memcmp(sbyte*,sbyte*,int)
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%h = constant [2 x sbyte] c"h\00"
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%hel = constant [4 x sbyte] c"hel\00"
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%hello_u = constant [8 x sbyte] c"hello_u\00"
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implementation
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void %test(sbyte *%P, sbyte *%Q, int %N, int* %IP, bool *%BP) {
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%A = call int %memcmp(sbyte *%P, sbyte* %P, int %N)
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volatile store int %A, int* %IP
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%B = call int %memcmp(sbyte *%P, sbyte* %Q, int 0)
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volatile store int %B, int* %IP
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%C = call int %memcmp(sbyte *%P, sbyte* %Q, int 1)
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volatile store int %C, int* %IP
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%D = call int %memcmp(sbyte *%P, sbyte* %Q, int 2)
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%E = seteq int %D, 0
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volatile store bool %E, bool* %BP
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ret void
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}
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