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llvm-6502/lib/IR
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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 IR: Split Metadata from Value 2014-12-09 18:38:53 +00:00
AsmWriter.h IR: Implement uselistorder assembly directives 2014-08-19 21:30:15 +00:00
AttributeImpl.h Canonicalize header guards into a common format. 2014-08-13 16:26:38 +00:00
Attributes.cpp Revert accidentally committed r217107 2014-09-03 23:38:05 +00:00
AutoUpgrade.cpp IR: Split Metadata from Value 2014-12-09 18:38:53 +00:00
BasicBlock.cpp Move helper for getting a terminating musttail call to BasicBlock 2014-08-12 00:05:15 +00:00
CMakeLists.txt IR: Split Metadata from Value 2014-12-09 18:38:53 +00:00
Comdat.cpp
ConstantFold.cpp ConstantFold: Clean up X * undef code 2014-12-10 21:58:17 +00:00
ConstantFold.h Canonicalize header guards into a common format. 2014-08-13 16:26:38 +00:00
ConstantRange.cpp
Constants.cpp Reapply "LLVMContext: Store APInt/APFloat directly into the ConstantInt/FP DenseMaps." 2014-12-06 13:12:56 +00:00
ConstantsContext.h IR: De-duplicate code for replacing operands in place 2014-08-19 19:13:30 +00:00
Core.cpp IR: Split Metadata from Value 2014-12-09 18:38:53 +00:00
DataLayout.cpp DataLayout: Provide nicer diagnostics for malformed strings 2014-12-10 02:36:41 +00:00
DebugInfo.cpp Try fixing MSVC build after r223802 2014-12-09 20:39:15 +00:00
DebugLoc.cpp IR: Split Metadata from Value 2014-12-09 18:38:53 +00:00
DiagnosticInfo.cpp IR: Split Metadata from Value 2014-12-09 18:38:53 +00:00
DiagnosticPrinter.cpp Fix typos in comments, NFC 2014-08-29 21:53:01 +00:00
DIBuilder.cpp IR: Split Metadata from Value 2014-12-09 18:38:53 +00:00
Dominators.cpp Revert "[C++11] Add predecessors(BasicBlock *) / successors(BasicBlock *) iterator ranges." 2014-07-21 17:06:51 +00:00
Function.cpp Masked Load / Store Intrinsics - the CodeGen part. 2014-12-04 09:40:44 +00:00
GCOV.cpp GCOV: Make sure that function idents in the .gcda and .gcno match 2014-11-06 06:55:02 +00:00
Globals.cpp Copy externally_initialized in GlobalVariable::copyAttributesFrom. 2014-11-10 18:41:59 +00:00
GVMaterializer.cpp
InlineAsm.cpp [inline asm] Add a check in InlineAsm::ConstraintInfo::Parse to make sure '{' 2014-09-05 22:30:32 +00:00
Instruction.cpp Revert "IR: MDNode => Value" 2014-11-11 21:30:22 +00:00
Instructions.cpp IR: Split Metadata from Value 2014-12-09 18:38:53 +00:00
IntrinsicInst.cpp IR: Split Metadata from Value 2014-12-09 18:38:53 +00:00
IRBuilder.cpp Masked Load / Store Intrinsics - the CodeGen part. 2014-12-04 09:40:44 +00:00
IRPrintingPasses.cpp
LeakDetector.cpp IR: Store MDNodes in a separate LeakDetector container 2014-12-11 21:39:39 +00:00
LeaksContext.h IR: Store MDNodes in a separate LeakDetector container 2014-12-11 21:39:39 +00:00
LegacyPassManager.cpp Document that PassManager::add() may delete the pass right away. 2014-12-12 01:27:01 +00:00
LLVMBuild.txt
LLVMContext.cpp Fix LLVMContext to match what MDKind names that the LL parser permits. Fixes PR21799! 2014-12-11 02:10:28 +00:00
LLVMContextImpl.cpp IR: Split Metadata from Value 2014-12-09 18:38:53 +00:00
LLVMContextImpl.h IR: Split Metadata from Value 2014-12-09 18:38:53 +00:00
Makefile
Mangler.cpp Silencing an "enumeral and non-enumeral type in conditional expression" warning; NFC. 2014-10-28 13:12:13 +00:00
MDBuilder.cpp IR: Split Metadata from Value 2014-12-09 18:38:53 +00:00
Metadata.cpp IR: Don't track nullptr on metadata RAUW 2014-12-12 19:24:33 +00:00
MetadataTracking.cpp IR: Split Metadata from Value 2014-12-09 18:38:53 +00:00
Module.cpp IR: Split Metadata from Value 2014-12-09 18:38:53 +00:00
module.modulemap
Pass.cpp
PassManager.cpp Remove unnecessary/redundant std::move 2014-07-16 17:09:21 +00:00
PassRegistry.cpp [PM] Remove an unused and rather expensive mapping from an analysis 2014-10-06 00:30:59 +00:00
Statepoint.cpp Fix a typo: use of cast where dyn_cast was intended 2014-12-04 17:27:58 +00:00
SymbolTableListTraitsImpl.h Canonicalize header guards into a common format. 2014-08-13 16:26:38 +00:00
Type.cpp Turn some DenseMaps that are only used for set operations into DenseSets. 2014-12-06 19:22:54 +00:00
TypeFinder.cpp IR: Split Metadata from Value 2014-12-09 18:38:53 +00:00
Use.cpp Fix a URL (NFC) 2014-08-21 21:09:24 +00:00
UseListOrder.cpp verify-uselistorder: Force -preserve-bc-use-list-order 2014-08-19 21:08:27 +00:00
User.cpp IR: Cleanup comments for Value, User, and MDNode 2014-10-15 20:28:31 +00:00
Value.cpp IR: Split Metadata from Value 2014-12-09 18:38:53 +00:00
ValueSymbolTable.cpp IR: Split Metadata from Value 2014-12-09 18:38:53 +00:00
ValueTypes.cpp
Verifier.cpp IR: Split Metadata from Value 2014-12-09 18:38:53 +00:00