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IR: Metadata/Value split: RAUW in a deterministic order

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RAUW in a deterministic order to try to recover the hexagon bot [1],
whose tests started failing once my GCC fixes were in for r223802.

Otherwise, I'm not sure why tests would fail there and not here.

[1]: http://lab.llvm.org:8011/builders/llvm-hexagon-elf/builds/13426

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@223829 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Duncan P. N. Exon Smith
2014-12-09 21:12:56 +00:00
parent b2a5bf25f9
commit 90cd6f1113
2 changed files with 41 additions and 22 deletions
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4
include/llvm/IR/Metadata.h
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@@ -141,9 +141,11 @@ public:
typedef MetadataTracking::OwnerTy OwnerTy;
private:
SmallDenseMap<void *, OwnerTy, 4> UseMap;
uint64_t NextIndex;
SmallDenseMap<void *, std::pair<OwnerTy, uint64_t>, 4> UseMap;
public:
ReplaceableMetadataImpl() : NextIndex(0) {}
~ReplaceableMetadataImpl() {
assert(UseMap.empty() && "Cannot destroy in-use replaceable metadata");
}