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Propagate whether `MDNode`s are 'distinct' through the other types of IR (assembly and bitcode). This adds the `distinct` keyword to assembly. Currently, no one actually calls `MDNode::getDistinct()`, so these nodes only get created for: - self-references, which are never uniqued, and - nodes whose operands are replaced that hit a uniquing collision. The concept of distinct nodes is still not quite first-class, since distinct-ness doesn't yet survive across `MapMetadata()`. Part of PR22111. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225474 91177308-0d34-0410-b5e6-96231b3b80d8
98 lines
4.0 KiB
LLVM
98 lines
4.0 KiB
LLVM
; RUN: opt -inline -enable-noalias-to-md-conversion -S < %s | FileCheck %s
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target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128"
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target triple = "x86_64-unknown-linux-gnu"
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define void @hello(float* noalias nocapture %a, float* noalias nocapture readonly %c) #0 {
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entry:
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%0 = load float* %c, align 4
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%arrayidx = getelementptr inbounds float* %a, i64 5
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store float %0, float* %arrayidx, align 4
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ret void
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}
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define void @foo(float* noalias nocapture %a, float* noalias nocapture readonly %c) #0 {
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entry:
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tail call void @hello(float* %a, float* %c)
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%0 = load float* %c, align 4
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%arrayidx = getelementptr inbounds float* %a, i64 7
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store float %0, float* %arrayidx, align 4
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ret void
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}
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; CHECK: define void @foo(float* noalias nocapture %a, float* noalias nocapture readonly %c) #0 {
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; CHECK: entry:
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; CHECK: %0 = load float* %c, align 4, !alias.scope !0, !noalias !3
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; CHECK: %arrayidx.i = getelementptr inbounds float* %a, i64 5
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; CHECK: store float %0, float* %arrayidx.i, align 4, !alias.scope !3, !noalias !0
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; CHECK: %1 = load float* %c, align 4
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; CHECK: %arrayidx = getelementptr inbounds float* %a, i64 7
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; CHECK: store float %1, float* %arrayidx, align 4
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; CHECK: ret void
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; CHECK: }
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define void @hello2(float* noalias nocapture %a, float* noalias nocapture %b, float* nocapture readonly %c) #0 {
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entry:
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%0 = load float* %c, align 4
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%arrayidx = getelementptr inbounds float* %a, i64 6
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store float %0, float* %arrayidx, align 4
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%arrayidx1 = getelementptr inbounds float* %b, i64 8
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store float %0, float* %arrayidx1, align 4
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ret void
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}
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; Check that when hello() is inlined into foo(), and then foo() is inlined into
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; foo2(), the noalias scopes are properly concatenated.
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define void @foo2(float* nocapture %a, float* nocapture %b, float* nocapture readonly %c) #0 {
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entry:
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tail call void @foo(float* %a, float* %c)
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tail call void @hello2(float* %a, float* %b, float* %c)
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%0 = load float* %c, align 4
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%arrayidx = getelementptr inbounds float* %a, i64 7
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store float %0, float* %arrayidx, align 4
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ret void
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}
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; CHECK: define void @foo2(float* nocapture %a, float* nocapture %b, float* nocapture readonly %c) #0 {
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; CHECK: entry:
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; CHECK: %0 = load float* %c, align 4, !alias.scope !5, !noalias !10
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; CHECK: %arrayidx.i.i = getelementptr inbounds float* %a, i64 5
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; CHECK: store float %0, float* %arrayidx.i.i, align 4, !alias.scope !10, !noalias !5
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; CHECK: %1 = load float* %c, align 4, !alias.scope !13, !noalias !14
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; CHECK: %arrayidx.i = getelementptr inbounds float* %a, i64 7
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; CHECK: store float %1, float* %arrayidx.i, align 4, !alias.scope !14, !noalias !13
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; CHECK: %2 = load float* %c, align 4, !noalias !15
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; CHECK: %arrayidx.i1 = getelementptr inbounds float* %a, i64 6
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; CHECK: store float %2, float* %arrayidx.i1, align 4, !alias.scope !19, !noalias !20
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; CHECK: %arrayidx1.i = getelementptr inbounds float* %b, i64 8
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; CHECK: store float %2, float* %arrayidx1.i, align 4, !alias.scope !20, !noalias !19
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; CHECK: %3 = load float* %c, align 4
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; CHECK: %arrayidx = getelementptr inbounds float* %a, i64 7
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; CHECK: store float %3, float* %arrayidx, align 4
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; CHECK: ret void
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; CHECK: }
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; CHECK: !0 = !{!1}
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; CHECK: !1 = distinct !{!1, !2, !"hello: %c"}
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; CHECK: !2 = distinct !{!2, !"hello"}
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; CHECK: !3 = !{!4}
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; CHECK: !4 = distinct !{!4, !2, !"hello: %a"}
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; CHECK: !5 = !{!6, !8}
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; CHECK: !6 = distinct !{!6, !7, !"hello: %c"}
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; CHECK: !7 = distinct !{!7, !"hello"}
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; CHECK: !8 = distinct !{!8, !9, !"foo: %c"}
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; CHECK: !9 = distinct !{!9, !"foo"}
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; CHECK: !10 = !{!11, !12}
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; CHECK: !11 = distinct !{!11, !7, !"hello: %a"}
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; CHECK: !12 = distinct !{!12, !9, !"foo: %a"}
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; CHECK: !13 = !{!8}
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; CHECK: !14 = !{!12}
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; CHECK: !15 = !{!16, !18}
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; CHECK: !16 = distinct !{!16, !17, !"hello2: %a"}
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; CHECK: !17 = distinct !{!17, !"hello2"}
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; CHECK: !18 = distinct !{!18, !17, !"hello2: %b"}
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; CHECK: !19 = !{!16}
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; CHECK: !20 = !{!18}
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attributes #0 = { nounwind uwtable }
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