Jeremy Morse 75cb40612e [DebugInfo] Avoid adding too much indirection to pointer-valued variables ... This patch addresses PR41675, where a stack-pointer variable is dereferenced too many times by its location expression, presenting a value on the stack as the pointer to the stack. The difference between a stack *pointer* DBG_VALUE and one that refers to a value on the stack, is currently the indirect flag. However the DWARF backend will also try to guess whether something is a memory location or not, based on whether there is any computation in the location expression. By simply prepending the stack offset to existing expressions, we can accidentally convert a register location into a memory location, which introduces a suprise (and unintended) dereference. The solution is to add DW_OP_stack_value whenever we add a DIExpression computation to a stack *pointer*. It's an implicit location computed on the expression stack, thus needs to be flagged as a stack_value. For the edge case where the offset is zero and the location could be a register location, DIExpression::prepend will still generate opcodes, and thus DW_OP_stack_value must still be added. Differential Revision: https://reviews.llvm.org/D63429 llvm-svn: 364736		2019-07-01 09:38:23 +00:00
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AbstractCallSite.cpp	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
AsmWriter.cpp	Revert r363658 "[SVE][IR] Scalable Vector IR Type with pr42210 fix"	2019-06-27 13:55:02 +00:00
AttributeImpl.h	Reapply: IR: add optional type to 'byval' function parameters	2019-05-30 18:48:23 +00:00
Attributes.cpp	[Attr] Add "willreturn" function attribute	2019-06-27 15:51:40 +00:00
AttributesCompatFunc.td
AutoUpgrade.cpp	Change semantics of fadd/fmul vector reductions.	2019-06-11 08:22:10 +00:00
BasicBlock.cpp	[NFC] BasicBlock: generalize replaceSuccessorsPhiUsesWith(), take Old bb	2019-05-05 18:59:45 +00:00
CMakeLists.txt	Reland "[Remarks] Refactor remark diagnostic emission in a RemarkStreamer"	2019-03-06 15:20:13 +00:00
Comdat.cpp	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
ConstantFold.cpp	Add FNeg IR constant folding support	2019-05-05 16:07:09 +00:00
ConstantFold.h	Add FNeg IR constant folding support	2019-05-05 16:07:09 +00:00
ConstantRange.cpp	[ConstantRange] Add sdiv() support	2019-06-03 18:19:54 +00:00
Constants.cpp	[Constants] Simplify type checking switch in ConstantExpr::get.	2019-05-05 17:19:16 +00:00
ConstantsContext.h	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
Core.cpp	[LLVM-C] Deprecate the LLVMValueRef-returning metadata creation functions	2019-04-24 17:05:08 +00:00
DataLayout.cpp	Cleanup: llvm::bsearch -> llvm::partition_point after r364719	2019-06-30 11:19:56 +00:00
DebugInfo.cpp	[DebugInfo] Delete TypedDINodeRef	2019-05-07 02:06:37 +00:00
DebugInfoMetadata.cpp	[DebugInfo] Avoid adding too much indirection to pointer-valued variables	2019-07-01 09:38:23 +00:00
DebugLoc.cpp	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
DiagnosticHandler.cpp	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
DiagnosticInfo.cpp	[Remarks][NFC] Move the serialization to lib/Remarks	2019-05-30 21:45:59 +00:00
DiagnosticPrinter.cpp	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
DIBuilder.cpp	[DebugInfo] Delete TypedDINodeRef	2019-05-07 02:06:37 +00:00
Dominators.cpp	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
Function.cpp	Cleanup: llvm::bsearch -> llvm::partition_point after r364719	2019-06-30 11:19:56 +00:00
Globals.cpp	Add IR support, ELF section and user documentation for partitioning feature.	2019-05-29 03:29:01 +00:00
GVMaterializer.cpp	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
InlineAsm.cpp	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
Instruction.cpp	[NFC] Instruction: introduce replaceSuccessorWith() function, use it	2019-05-05 18:59:22 +00:00
Instructions.cpp	Silenced a warning "implicit conversion turns string literal into bool" introduced in r362473	2019-06-04 09:31:07 +00:00
IntrinsicInst.cpp	[IR] Add SaturatingInst and BinaryOpIntrinsic classes	2019-05-28 18:08:06 +00:00
IRBuilder.cpp	Improve reduction intrinsics by overloading result value.	2019-06-13 09:37:38 +00:00
IRPrintingPasses.cpp	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
LegacyPassManager.cpp	ftime-trace: Trace the name of the currently active pass as well.	2019-04-20 23:22:45 +00:00
LLVMBuild.txt	[Remarks] Add string deduplication using a string table	2019-04-24 00:06:24 +00:00
LLVMContext.cpp	Reland "[Remarks] Refactor remark diagnostic emission in a RemarkStreamer"	2019-03-06 15:20:13 +00:00
LLVMContextImpl.cpp	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
LLVMContextImpl.h	Revert r363658 "[SVE][IR] Scalable Vector IR Type with pr42210 fix"	2019-06-27 13:55:02 +00:00
Mangler.cpp	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
MDBuilder.cpp	Use llvm::stable_sort	2019-04-23 14:51:27 +00:00
Metadata.cpp	Use llvm::stable_sort	2019-04-23 14:51:27 +00:00
MetadataImpl.h	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
Module.cpp	[PGO] Context sensitive PGO (part 2)	2019-02-28 19:55:07 +00:00
ModuleSummaryIndex.cpp	[ThinLTO] Auto-hide prevailing linkonce_odr only when all copies eligible	2019-05-10 20:08:24 +00:00
Operator.cpp	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
OptBisect.cpp	Fix IR/Analysis layering issue with OptBisect	2019-02-28 04:00:55 +00:00
Pass.cpp	[IR] Refactor attribute methods in Function class (NFC)	2019-04-04 22:40:06 +00:00
PassInstrumentation.cpp	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
PassManager.cpp	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
PassRegistry.cpp	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
PassTimingInfo.cpp	[Legacy][TimePasses] allow -time-passes reporting into a custom stream	2019-03-22 23:11:08 +00:00
ProfileSummary.cpp	[PGO] Context sensitive PGO (part 2)	2019-02-28 19:55:07 +00:00
RemarkStreamer.cpp	[Remarks] Extend -fsave-optimization-record to specify the format	2019-06-17 16:06:00 +00:00
SafepointIRVerifier.cpp	SafepointIRVerifier port to new Pass Manager	2019-03-31 10:15:39 +00:00
Statepoint.cpp	[CallSite removal] Migrate the statepoint GC infrastructure to use the	2019-02-11 07:42:30 +00:00
SymbolTableListTraitsImpl.h	[ADT] Notify ilist traits about in-list transfers	2019-01-23 22:59:52 +00:00
Type.cpp	Revert r363658 "[SVE][IR] Scalable Vector IR Type with pr42210 fix"	2019-06-27 13:55:02 +00:00
TypeFinder.cpp	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
Use.cpp	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
User.cpp	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
Value.cpp	Introduce Value::stripPointerCastsSameRepresentation	2019-06-04 20:21:46 +00:00
ValueSymbolTable.cpp	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
Verifier.cpp	[Attr] Add "willreturn" function attribute	2019-06-27 15:51:40 +00:00