Duncan P. N. Exon Smith 7f70bc555a IR: Lazily create ReplaceableMetadataImpl on MDNode ... RAUW support on MDNode usually requires an extra allocation for ReplaceableMetadataImpl. This is only strictly necessary if there are tracking references to the MDNode. Make the construction of ReplaceableMetadataImpl lazy, so that we don't get allocations if we don't need them. Since MDNode::isResolved now checks MDNode::isTemporary and MDNode::NumUnresolved instead of whether a ReplaceableMetadataImpl is allocated, the internal changes are intrusive (at various internal checkpoints, isResolved now has a different answer). However, there should be no real functionality change here; just slightly lazier allocation behaviour. The external semantics should be identical. llvm-svn: 265279		2016-04-03 21:23:52 +00:00
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llvm	IR: Lazily create ReplaceableMetadataImpl on MDNode	2016-04-03 21:23:52 +00:00
llvm-c	Various style fix in Core.h/Core.cpp . NFC	2016-04-03 21:06:04 +00:00