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
..
Argument.h	IR: make getParamByValType Just Work. NFC.	2019-06-05 20:37:47 +00:00
AssemblyAnnotationWriter.h
Attributes.h	Reapply: IR: add optional type to 'byval' function parameters	2019-05-30 18:48:23 +00:00
Attributes.td	[Attr] Add "willreturn" function attribute	2019-06-27 15:51:40 +00:00
AutoUpgrade.h	[IR] Disallow llvm.global_ctors and llvm.global_dtors of the 2-field form in textual format	2019-05-15 02:35:32 +00:00
BasicBlock.h	[NFC] BasicBlock: generalize replaceSuccessorsPhiUsesWith(), take Old bb	2019-05-05 18:59:45 +00:00
CallingConv.h
CallSite.h	Reapply: IR: add optional type to 'byval' function parameters	2019-05-30 18:48:23 +00:00
CFG.h
CFGDiff.h
CMakeLists.txt
Comdat.h
Constant.h	[InstCombine] canonicalize funnel shift constant shift amount to be modulo bitwidth	2019-03-14 19:22:08 +00:00
ConstantFolder.h	[IRBuilder] Add CreateUnOp(...) to the IRBuilder to support unary FNeg	2019-05-28 13:00:52 +00:00
ConstantRange.h	[ConstantRange] Add sdiv() support	2019-06-03 18:19:54 +00:00
Constants.h
DataLayout.h	[DSE] Bugfix to avoid PartialStoreMerging involving non byte-sized stores	2019-05-24 08:32:02 +00:00
DebugInfo.h
DebugInfoFlags.def	[IR/DIVar] Add the flag for params that have unmodified value	2019-06-26 11:19:26 +00:00
DebugInfoMetadata.h	[DebugInfo] Avoid adding too much indirection to pointer-valued variables	2019-07-01 09:38:23 +00:00
DebugLoc.h
DerivedTypes.h	Revert r363658 "[SVE][IR] Scalable Vector IR Type with pr42210 fix"	2019-06-27 13:55:02 +00:00
DerivedUser.h
DiagnosticHandler.h
DiagnosticInfo.h	[Remarks][NFC] Move the serialization to lib/Remarks	2019-05-30 21:45:59 +00:00
DiagnosticPrinter.h
DIBuilder.h	Fix Wdocumentation warning. NFCI.	2019-04-09 09:38:25 +00:00
Dominators.h
Function.h	IR: make getParamByValType Just Work. NFC.	2019-06-05 20:37:47 +00:00
GetElementPtrTypeIterator.h
GlobalAlias.h
GlobalIFunc.h
GlobalIndirectSymbol.h
GlobalObject.h
GlobalValue.h	Add IR support, ELF section and user documentation for partitioning feature.	2019-05-29 03:29:01 +00:00
GlobalVariable.h
GVMaterializer.h
InlineAsm.h
InstIterator.h
InstrTypes.h	[IR] Add UnaryOperator::CreateFNegFMF(...)	2019-06-07 18:59:51 +00:00
Instruction.def	Implementation of asm-goto support in LLVM	2019-02-08 20:48:56 +00:00
Instruction.h	[NFC] Instruction: introduce replaceSuccessorWith() function, use it	2019-05-05 18:59:22 +00:00
Instructions.h	[NFC] Update documentation for AtomicCmpXchgInst	2019-06-20 09:37:52 +00:00
InstVisitor.h	Implementation of asm-goto support in LLVM	2019-02-08 20:48:56 +00:00
IntrinsicInst.h	[IR] Add SaturatingInst and BinaryOpIntrinsic classes	2019-05-28 18:08:06 +00:00
Intrinsics.h	Improve reduction intrinsics by overloading result value.	2019-06-13 09:37:38 +00:00
Intrinsics.td	[HardwareLoops] Loop counter guard intrinsic	2019-06-28 07:38:16 +00:00
IntrinsicsAArch64.td	Test forward references in IntrinsicEmitter on Neon LD(2|3|4)	2019-06-17 12:01:53 +00:00
IntrinsicsAMDGPU.td	AMDGPU: Make amdgcn.s.get.waveid.in.workgroup inaccessiblememonly	2019-06-25 13:03:06 +00:00
IntrinsicsARM.td	[ARM][CMSE] Add cmse intrinsics for TT instructions	2019-05-14 16:14:24 +00:00
IntrinsicsBPF.td
IntrinsicsHexagon.td	Hexagon: Add ImmArg to intrinsics	2019-03-13 19:46:33 +00:00
IntrinsicsMips.td	Mips: Add ImmArg to intrinsics	2019-03-13 19:07:59 +00:00
IntrinsicsNVVM.td	Revert "[NVPTX][NFC] Fix documentation for shfl instructions." The	2019-06-24 23:29:20 +00:00
IntrinsicsPowerPC.td	Add __builtin_dcbf support for PPC	2019-04-29 23:25:33 +00:00
IntrinsicsRISCV.td	[RISCV] Add ImmArg to intrinsics	2019-03-18 06:01:27 +00:00
IntrinsicsSystemZ.td	SystemZ: Add ImmArg to intrinsics	2019-03-13 19:46:32 +00:00
IntrinsicsWebAssembly.td	[WebAssembly] Add immarg attribute to intrinsics	2019-03-19 05:02:30 +00:00
IntrinsicsX86.td	[X86] Add missing properties on llvm.x86.sse.{st,ld}mxcsr	2019-06-19 08:44:31 +00:00
IntrinsicsXCore.td
IRBuilder.h	[NFC][IR] Move CreateFNegFMF(...) next to CreateFNeg(...).	2019-06-19 16:35:15 +00:00
IRPrintingPasses.h
LegacyPassManager.h
LegacyPassManagers.h
LegacyPassNameParser.h
LLVMContext.h	Reland "[Remarks] Refactor remark diagnostic emission in a RemarkStreamer"	2019-03-06 15:20:13 +00:00
Mangler.h
MDBuilder.h
Metadata.def	Add LLVM IR debug info support for Fortran COMMON blocks	2019-04-08 19:13:55 +00:00
Metadata.h
Module.h	[PGO] Remove the default parameter in ProfileSummary API. NFC	2019-03-01 18:36:24 +00:00
ModuleSlotTracker.h
ModuleSummaryIndex.h	[ThinLTO] Auto-hide prevailing linkonce_odr only when all copies eligible	2019-05-10 20:08:24 +00:00
ModuleSummaryIndexYAML.h	[ThinLTO] Auto-hide prevailing linkonce_odr only when all copies eligible	2019-05-10 20:08:24 +00:00
NoFolder.h	[IRBuilder] Add CreateUnOp(...) to the IRBuilder to support unary FNeg	2019-05-28 13:00:52 +00:00
OperandTraits.h
Operator.h	Reland "Relax constraints for reduction vectorization"	2019-03-12 01:31:44 +00:00
OptBisect.h	Fix IR/Analysis layering issue with OptBisect	2019-02-28 04:00:55 +00:00
PassInstrumentation.h
PassManager.h	[AliasAnalysis/NewPassManager] Invalidate AAManager less often.	2019-04-30 22:15:47 +00:00
PassManagerInternal.h
PassTimingInfo.h	[Legacy][TimePasses] allow -time-passes reporting into a custom stream	2019-03-22 23:11:08 +00:00
PatternMatch.h	[IR][Patternmatch] Add m_SpecificInt_ULT() predicate	2019-06-29 11:51:37 +00:00
PredIteratorCache.h
ProfileSummary.h	[PGO] Context sensitive PGO (part 2)	2019-02-28 19:55:07 +00:00
RemarkStreamer.h	[Remarks] Extend -fsave-optimization-record to specify the format	2019-06-17 16:06:00 +00:00
RuntimeLibcalls.def	[CodeGen] Add lrint/llrint builtins	2019-05-28 20:47:44 +00:00
SafepointIRVerifier.h	SafepointIRVerifier port to new Pass Manager	2019-03-31 10:15:39 +00:00
Statepoint.h	Fix uninitialized value warnings in StatepointBase constructors. NFCI.	2019-05-09 12:21:00 +00:00
SymbolTableListTraits.h
TrackingMDRef.h
Type.h	Revert r363658 "[SVE][IR] Scalable Vector IR Type with pr42210 fix"	2019-06-27 13:55:02 +00:00
TypeFinder.h
Use.h
UseListOrder.h
User.h
Value.def
Value.h	Introduce Value::stripPointerCastsSameRepresentation	2019-06-04 20:21:46 +00:00
ValueHandle.h
ValueMap.h
ValueSymbolTable.h
Verifier.h