23 lines
725 B
LLVM
23 lines
725 B
LLVM
; RUN: opt < %s -S -basicaa -memcpyopt | FileCheck %s
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target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
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%T = type { i64, i64 }
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define void @test(i8* %src) {
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%tmp = alloca i8
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%dst = alloca i8
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; CHECK: call void @llvm.memcpy.p0i8.p0i8.i64(i8* %dst, i8* %src, i64 1, i32 8, i1 false)
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call void @llvm.memcpy.p0i8.p0i8.i64(i8* %tmp, i8* %src, i64 1, i32 8, i1 false), !noalias !2
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call void @llvm.memcpy.p0i8.p0i8.i64(i8* %dst, i8* %tmp, i64 1, i32 8, i1 false)
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ret void
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}
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declare void @llvm.memcpy.p0i8.p0i8.i64(i8*, i8*, i64, i32, i1)
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; Check that the noalias for "dst" was removed by checking that the metadata is gone
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; CHECK-NOT: "dst"
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!0 = !{!0}
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!1 = distinct !{!1, !0, !"dst"}
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!2 = distinct !{!1}
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