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Utils: Add mapping for uniqued MDLocations

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Still doesn't handle distinct ones.  Part of PR21433.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225914 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Duncan P. N. Exon Smith 2015-01-14 01:20:27 +00:00
parent aafca11ff9
commit 74195b2df3
3 changed files with 60 additions and 3 deletions
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26
lib/Transforms/Utils/ValueMapper.cpp
View File

@ -219,8 +219,8 @@ static bool shouldRemapUniquedNode(const UniquableMDNode *Node,
return false;
}
static Metadata *cloneMDTuple(const UniquableMDNode *Node,
ValueToValueMapTy &VM, RemapFlags Flags,
static Metadata *cloneMDTuple(const MDTuple *Node, ValueToValueMapTy &VM,
RemapFlags Flags,
ValueMapTypeRemapper *TypeMapper,
ValueMaterializer *Materializer) {
SmallVector<Metadata *, 4> Elts;
@ -232,6 +232,16 @@ static Metadata *cloneMDTuple(const UniquableMDNode *Node,
return MDTuple::get(Node->getContext(), Elts);
}
static Metadata *cloneMDLocation(const MDLocation *Node, ValueToValueMapTy &VM,
RemapFlags Flags,
ValueMapTypeRemapper *TypeMapper,
ValueMaterializer *Materializer) {
return MDLocation::get(
Node->getContext(), Node->getLine(), Node->getColumn(),
mapMetadataOp(Node->getScope(), VM, Flags, TypeMapper, Materializer),
mapMetadataOp(Node->getInlinedAt(), VM, Flags, TypeMapper, Materializer));
}
/// \brief Map a uniqued MDNode.
///
/// Uniqued nodes may not need to be recreated (they may map to themselves).
@ -254,7 +264,17 @@ static Metadata *mapUniquedNode(const UniquableMDNode *Node,
}
// At least one operand needs remapping.
Metadata *NewMD = cloneMDTuple(Node, VM, Flags, TypeMapper, Materializer);
Metadata *NewMD;
switch (Node->getMetadataID()) {
default:
llvm_unreachable("Invalid UniquableMDNode subclass");
#define HANDLE_UNIQUABLE_LEAF(CLASS) \
case Metadata::CLASS##Kind: \
NewMD = \
clone##CLASS(cast<CLASS>(Node), VM, Flags, TypeMapper, Materializer); \
break;
#include "llvm/IR/Metadata.def"
}
Dummy->replaceAllUsesWith(NewMD);
MDNode::deleteTemporary(Dummy);
return mapToMetadata(VM, Node, NewMD);

10
test/Linker/Inputs/mdlocation.ll Normal file
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@ -0,0 +1,10 @@
!named = !{!0, !1, !2, !3, !4, !5, !6, !7}
!0 = !{} ; Use this as a scope.
!1 = !MDLocation(line: 3, column: 7, scope: !0)
!2 = !MDLocation(line: 3, column: 7, scope: !0, inlinedAt: !1)
!3 = !MDLocation(line: 3, column: 7, scope: !0, inlinedAt: !2)
!4 = distinct !{} ; Test actual remapping.
!5 = !MDLocation(line: 3, column: 7, scope: !4)
!6 = !MDLocation(line: 3, column: 7, scope: !4, inlinedAt: !5)
!7 = !MDLocation(line: 3, column: 7, scope: !4, inlinedAt: !6)

27
test/Linker/mdlocation.ll Normal file
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@ -0,0 +1,27 @@
; RUN: llvm-link %s %S/Inputs/mdlocation.ll -o - -S | FileCheck %s
; Test that MDLocations are remapped properly.
; CHECK: !named = !{!0, !1, !2, !3, !4, !5, !6, !7, !0, !1, !2, !3, !8, !9, !10, !11}
!named = !{!0, !1, !2, !3, !4, !5, !6, !7}
; CHECK: !0 = !{}
; CHECK-NEXT: !1 = !MDLocation(line: 3, column: 7, scope: !0)
; CHECK-NEXT: !2 = !MDLocation(line: 3, column: 7, scope: !0, inlinedAt: !1)
; CHECK-NEXT: !3 = !MDLocation(line: 3, column: 7, scope: !0, inlinedAt: !2)
; CHECK-NEXT: !4 = distinct !{}
; CHECK-NEXT: !5 = !MDLocation(line: 3, column: 7, scope: !4)
; CHECK-NEXT: !6 = !MDLocation(line: 3, column: 7, scope: !4, inlinedAt: !5)
; CHECK-NEXT: !7 = !MDLocation(line: 3, column: 7, scope: !4, inlinedAt: !6)
; CHECK-NEXT: !8 = distinct !{}
; CHECK-NEXT: !9 = !MDLocation(line: 3, column: 7, scope: !8)
; CHECK-NEXT: !10 = !MDLocation(line: 3, column: 7, scope: !8, inlinedAt: !9)
; CHECK-NEXT: !11 = !MDLocation(line: 3, column: 7, scope: !8, inlinedAt: !10)
!0 = !{} ; Use this as a scope.
!1 = !MDLocation(line: 3, column: 7, scope: !0)
!2 = !MDLocation(line: 3, column: 7, scope: !0, inlinedAt: !1)
!3 = !MDLocation(line: 3, column: 7, scope: !0, inlinedAt: !2)
!4 = distinct !{} ; Test actual remapping.
!5 = !MDLocation(line: 3, column: 7, scope: !4)
!6 = !MDLocation(line: 3, column: 7, scope: !4, inlinedAt: !5)
!7 = !MDLocation(line: 3, column: 7, scope: !4, inlinedAt: !6)