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view test/Transforms/InstCombine/call-intrinsics.ll @ 121:803732b1fca8

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LLVM 5.0
author kono
date Fri, 27 Oct 2017 17:07:41 +0900
parents afa8332a0e37
children 3a76565eade5
line wrap: on
line source

; RUN: opt < %s -instcombine | llvm-dis

@X = global i8 0                ; <i8*> [#uses=3]
@Y = global i8 12               ; <i8*> [#uses=2]

declare void @llvm.memmove.p0i8.p0i8.i32(i8*, i8*, i32, i32, i1)

declare void @llvm.memcpy.p0i8.p0i8.i32(i8*, i8*, i32, i32, i1)

declare void @llvm.memset.p0i8.i32(i8*, i8, i32, i32, i1)

define void @zero_byte_test() {
        ; These process zero bytes, so they are a noop.
        call void @llvm.memmove.p0i8.p0i8.i32( i8* @X, i8* @Y, i32 0, i32 128, i1 false )
        call void @llvm.memcpy.p0i8.p0i8.i32( i8* @X, i8* @Y, i32 0, i32 128, i1 false )
        call void @llvm.memset.p0i8.i32( i8* @X, i8 123, i32 0, i32 128, i1 false )
        ret void
}