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0c58cacb7a
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50469 91177308-0d34-0410-b5e6-96231b3b80d8
23 lines
869 B
LLVM
23 lines
869 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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@h = constant [2 x i8] c"h\00" ; <[2 x i8]*> [#uses=0]
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@hel = constant [4 x i8] c"hel\00" ; <[4 x i8]*> [#uses=0]
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@hello_u = constant [8 x i8] c"hello_u\00" ; <[8 x i8]*> [#uses=0]
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declare i32 @memcmp(i8*, i8*, i32)
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define void @test(i8* %P, i8* %Q, i32 %N, i32* %IP, i1* %BP) {
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%A = call i32 @memcmp( i8* %P, i8* %P, i32 %N ) ; <i32> [#uses=1]
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volatile store i32 %A, i32* %IP
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%B = call i32 @memcmp( i8* %P, i8* %Q, i32 0 ) ; <i32> [#uses=1]
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volatile store i32 %B, i32* %IP
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%C = call i32 @memcmp( i8* %P, i8* %Q, i32 1 ) ; <i32> [#uses=1]
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volatile store i32 %C, i32* %IP
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%D = call i32 @memcmp( i8* %P, i8* %Q, i32 2 ) ; <i32> [#uses=1]
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%E = icmp eq i32 %D, 0 ; <i1> [#uses=1]
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volatile store i1 %E, i1* %BP
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ret void
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}
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