Duncan P. N. Exon Smith 85cbe57fc5 IR: Don't track nullptr on metadata RAUW ... The RAUW support in `Metadata` supports going to `nullptr` specifically to handle values being deleted, causing `ValueAsMetadata` to be deleted. Fix the case where the reference is from a `TrackingMDRef` (as opposed to an `MDOperand` or a `MetadataAsValue`). This is surprisingly rare -- metadata tracked by `TrackingMDRef` going to null -- but it came up in an openSUSE bootstrap during inlining. The tracking ref was held by the `ValueMap` because it was referencing a local, the basic block containing the local became dead after it had been merged in, and when the local was deleted, the tracking ref asserted in an `isa`. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@224146 91177308-0d34-0410-b5e6-96231b3b80d8		2014-12-12 19:24:33 +00:00
..
AsmWriter.cpp
AsmWriter.h
AttributeImpl.h
Attributes.cpp
AutoUpgrade.cpp
BasicBlock.cpp
CMakeLists.txt
Comdat.cpp
ConstantFold.cpp
ConstantFold.h
ConstantRange.cpp
Constants.cpp
ConstantsContext.h
Core.cpp
DataLayout.cpp
DebugInfo.cpp
DebugLoc.cpp
DiagnosticInfo.cpp
DiagnosticPrinter.cpp
DIBuilder.cpp
Dominators.cpp
Function.cpp
GCOV.cpp
Globals.cpp
GVMaterializer.cpp
InlineAsm.cpp
Instruction.cpp
Instructions.cpp
IntrinsicInst.cpp
IRBuilder.cpp
IRPrintingPasses.cpp
LeakDetector.cpp
LeaksContext.h
LegacyPassManager.cpp
LLVMBuild.txt
LLVMContext.cpp
LLVMContextImpl.cpp
LLVMContextImpl.h
Makefile
Mangler.cpp
MDBuilder.cpp
Metadata.cpp	IR: Don't track nullptr on metadata RAUW	2014-12-12 19:24:33 +00:00
MetadataTracking.cpp
Module.cpp
module.modulemap
Pass.cpp
PassManager.cpp
PassRegistry.cpp
Statepoint.cpp
SymbolTableListTraitsImpl.h
Type.cpp
TypeFinder.cpp
Use.cpp
UseListOrder.cpp
User.cpp
Value.cpp
ValueSymbolTable.cpp
ValueTypes.cpp
Verifier.cpp