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| author | Dan Gohman <gohman@apple.com> | 2010-08-20 22:02:26 +0000 |
|---|---|---|
| committer | Dan Gohman <gohman@apple.com> | 2010-08-20 22:02:26 +0000 |
| commit | 489b29b0a4ee4526e3d50ad88d3d48745baf5042 (patch) | |
| tree | 6602f14da364b9d6e0714e7b327adf14d7ffac23 /lib/AsmParser | |
| parent | 95c79302259c03aa99010bbbc7d8ffeae3fa9740 (diff) | |
| download | external_llvm-489b29b0a4ee4526e3d50ad88d3d48745baf5042.zip external_llvm-489b29b0a4ee4526e3d50ad88d3d48745baf5042.tar.gz external_llvm-489b29b0a4ee4526e3d50ad88d3d48745baf5042.tar.bz2 | |
Introduce a new temporary MDNode concept. Temporary MDNodes are
not part of the IR, are not uniqued, and may be safely RAUW'd.
This replaces a variety of alternate mechanisms for achieving
the same effect.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@111681 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/AsmParser')
| -rw-r--r-- | lib/AsmParser/LLParser.cpp | 10 |
1 files changed, 4 insertions, 6 deletions
diff --git a/lib/AsmParser/LLParser.cpp b/lib/AsmParser/LLParser.cpp index c55a165..dc545ff 100644 --- a/lib/AsmParser/LLParser.cpp +++ b/lib/AsmParser/LLParser.cpp @@ -517,11 +517,7 @@ bool LLParser::ParseMDNodeID(MDNode *&Result) { if (Result) return false; // Otherwise, create MDNode forward reference. - - // FIXME: This is not unique enough! - std::string FwdRefName = "llvm.mdnode.fwdref." + utostr(MID); - Value *V = MDString::get(Context, FwdRefName); - MDNode *FwdNode = MDNode::get(Context, &V, 1); + MDNode *FwdNode = MDNode::getTemporary(Context, 0, 0); ForwardRefMDNodes[MID] = std::make_pair(FwdNode, Lex.getLoc()); if (NumberedMetadata.size() <= MID) @@ -585,7 +581,9 @@ bool LLParser::ParseStandaloneMetadata() { std::map<unsigned, std::pair<TrackingVH<MDNode>, LocTy> >::iterator FI = ForwardRefMDNodes.find(MetadataID); if (FI != ForwardRefMDNodes.end()) { - FI->second.first->replaceAllUsesWith(Init); + MDNode *Temp = FI->second.first; + Temp->replaceAllUsesWith(Init); + MDNode::deleteTemporary(Temp); ForwardRefMDNodes.erase(FI); assert(NumberedMetadata[MetadataID] == Init && "Tracking VH didn't work"); |