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02474a32eb
llvm-6502/include/llvm/CodeGen
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Adrian Prantl 02474a32eb Move the complex address expression out of DIVariable and into an extra 
argument of the llvm.dbg.declare/llvm.dbg.value intrinsics.

Previously, DIVariable was a variable-length field that has an optional
reference to a Metadata array consisting of a variable number of
complex address expressions. In the case of OpPiece expressions this is
wasting a lot of storage in IR, because when an aggregate type is, e.g.,
SROA'd into all of its n individual members, the IR will contain n copies
of the DIVariable, all alike, only differing in the complex address
reference at the end.

By making the complex address into an extra argument of the
dbg.value/dbg.declare intrinsics, all of the pieces can reference the
same variable and the complex address expressions can be uniqued across
the CU, too.
Down the road, this will allow us to move other flags, such as
"indirection" out of the DIVariable, too.

The new intrinsics look like this:
declare void @llvm.dbg.declare(metadata %storage, metadata %var, metadata %expr)
declare void @llvm.dbg.value(metadata %storage, i64 %offset, metadata %var, metadata %expr)

This patch adds a new LLVM-local tag to DIExpressions, so we can detect
and pretty-print DIExpression metadata nodes.

What this patch doesn't do:

This patch does not touch the "Indirect" field in DIVariable; but moving
that into the expression would be a natural next step.

http://reviews.llvm.org/D4919
rdar://problem/17994491

Thanks to dblaikie and dexonsmith for reviewing this patch!

Note: I accidentally committed a bogus older version of this patch previously.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@218787 91177308-0d34-0410-b5e6-96231b3b80d8
2014-10-01 18:55:02 +00:00
..
PBQP Use CostPool::PoolRef typedef some more 2014-09-11 00:08:54 +00:00
Analysis.h Refactor duplicated code. 2014-07-30 19:42:16 +00:00
AsmPrinter.h Debug info: Infrastructure to support debug locations for fragmented 2014-08-01 22:11:58 +00:00
CalcSpillWeights.h
CallingConvLower.h [mips] Add CCValAssign::[ASZ]ExtUpper and CCPromoteToUpperBitsInType and handle struct's correctly on big-endian N32/N64 return values. 2014-09-25 12:15:05 +00:00
CommandFlags.h Replace -use-init-array with -use-ctors. 2014-09-02 13:54:53 +00:00
DAGCombine.h
DFAPacketizer.h Cleanup: Delete seemingly unused reference to MachineDominatorTree from ScheduleDAGInstrs. 2014-08-20 20:57:26 +00:00
EdgeBundles.h [modules] "Specialize" a function by actually specializing a function template 2014-04-24 18:27:29 +00:00
FastISel.h [FastISel][AArch64] Add lowering support for frem. 2014-09-15 22:07:49 +00:00
FunctionLoweringInfo.h Optimize sext/zext insertion algorithm in back-end. 2014-09-19 05:30:35 +00:00
GCMetadata.h Use unique_ptr to manage ownership of GCStrategy objects in GCMetadata 2014-04-15 05:34:49 +00:00
GCMetadataPrinter.h
GCs.h Test commit: Remove trailing whitespace. 2014-03-10 22:24:07 +00:00
GCStrategy.h Use unique_ptr to manage ownership of GCFunctionInfos in GCStrategy 2014-04-15 06:07:26 +00:00
IntrinsicLowering.h Rename some member variables from TD to DL. 2014-02-18 15:33:12 +00:00
ISDOpcodes.h CodeGen: extend f16 conversions to permit types > float. 2014-07-17 10:51:23 +00:00
JumpInstrTables.h Escape "@function" with \verbatim. [-Wdocumentation] 2014-06-08 23:25:02 +00:00
LatencyPriorityQueue.h [C++11] More 'nullptr' conversion. In some cases just using a boolean check instead of comparing to nullptr. 2014-04-14 00:51:57 +00:00
LexicalScopes.h Repace SmallPtrSet with SmallPtrSetImpl in function arguments to avoid needing to mention the size. 2014-08-21 05:55:13 +00:00
LinkAllAsmWriterComponents.h
LinkAllCodegenComponents.h [C++] Use 'nullptr'. 2014-04-24 06:44:33 +00:00
LiveInterval.h [C++11] More 'nullptr' conversion. In some cases just using a boolean check instead of comparing to nullptr. 2014-04-14 00:51:57 +00:00
LiveIntervalAnalysis.h Canonicalize header guards into a common format. 2014-08-13 16:26:38 +00:00
LiveIntervalUnion.h [C++11] More 'nullptr' conversion. In some cases just using a boolean check instead of comparing to nullptr. 2014-04-14 00:51:57 +00:00
LivePhysRegs.h Canonicalize header guards into a common format. 2014-08-13 16:26:38 +00:00
LiveRangeEdit.h Remove unnecessary getTarget call now that the subtarget is cached 2014-09-03 20:36:26 +00:00
LiveRegMatrix.h [C++11] Replace OwningPtr with std::unique_ptr in places where it doesn't break the API. 2014-04-21 09:34:48 +00:00
LiveStackAnalysis.h [C++11] More 'nullptr' conversion. In some cases just using a boolean check instead of comparing to nullptr. 2014-04-14 00:51:57 +00:00
LiveVariables.h CodeGen/LiveVariables: hoist out code in nested loops 2014-08-25 01:59:49 +00:00
MachineBasicBlock.h Fix missing const 2014-07-02 06:45:26 +00:00
MachineBlockFrequencyInfo.h blockfreq: Remove unnecessary template parameters 2014-04-11 23:21:02 +00:00
MachineBranchProbabilityInfo.h blockfreq: Use const in MachineBlockFrequencyInfo 2014-03-25 18:01:32 +00:00
MachineCombinerPattern.h MachineCombiner Pass for selecting faster instruction 2014-08-03 21:35:39 +00:00
MachineConstantPool.h CodeGen: Add a getSectionKind method to MachineConstantPoolEntry 2014-07-14 22:06:29 +00:00
MachineDominanceFrontier.h Try to fix MSVC build 2014-07-12 23:09:02 +00:00
MachineDominators.h [MachineDominatorTree] Provide a method to inform a MachineDominatorTree that a 2014-08-13 21:00:07 +00:00
MachineFrameInfo.h musttail: Forward regparms of variadic functions on x86_64 2014-08-29 21:42:08 +00:00
MachineFunction.h Have setSubtarget take a const subtarget. 2014-09-26 01:28:13 +00:00
MachineFunctionAnalysis.h [C++11] Add 'override' keyword to virtual methods that override their base class. 2014-03-07 09:26:03 +00:00
MachineFunctionPass.h [C++11] Add 'override' keyword to virtual methods that override their base class. 2014-03-07 09:26:03 +00:00
MachineInstr.h Move the complex address expression out of DIVariable and into an extra 2014-10-01 18:55:02 +00:00
MachineInstrBuilder.h Move the complex address expression out of DIVariable and into an extra 2014-10-01 18:55:02 +00:00
MachineInstrBundle.h [C++11] More 'nullptr' conversion. In some cases just using a boolean check instead of comparing to nullptr. 2014-04-14 00:51:57 +00:00
MachineJumpTableInfo.h
MachineLoopInfo.h [C++11] Add 'override' keyword to virtual methods that override their base class. 2014-03-07 09:26:03 +00:00
MachineMemOperand.h AA metadata refactoring (introduce AAMDNodes) 2014-07-24 12:16:19 +00:00
MachineModuleInfo.h Move the complex address expression out of DIVariable and into an extra 2014-10-01 18:55:02 +00:00
MachineModuleInfoImpls.h
MachineOperand.h Add MachineOperand::ChangeToFPImmediate and setFPImm 2014-09-28 19:24:59 +00:00
MachinePassRegistry.h [C++11] More 'nullptr' conversion. In some cases just using a boolean check instead of comparing to nullptr. 2014-04-14 00:51:57 +00:00
MachinePostDominators.h Fix typos in comments, NFC 2014-08-29 21:53:01 +00:00
MachineRegionInfo.h Templatify RegionInfo so it works on MachineBasicBlocks 2014-07-19 18:29:29 +00:00
MachineRegisterInfo.h CodeGen: switch raw array to std::vector 2014-08-25 00:28:31 +00:00
MachineScheduler.h Cleanup: Delete seemingly unused reference to MachineDominatorTree from ScheduleDAGInstrs. 2014-08-20 20:57:26 +00:00
MachineSSAUpdater.h [C++11] More 'nullptr' conversion. In some cases just using a boolean check instead of comparing to nullptr. 2014-04-14 00:51:57 +00:00
MachineTraceMetrics.h Canonicalize header guards into a common format. 2014-08-13 16:26:38 +00:00
MachineValueType.h Teach the AArch64 backend about v4f16 and v8f16 2014-08-27 16:16:04 +00:00
MachORelocation.h
Passes.h Rename AtomicExpandLoadLinked into AtomicExpand 2014-08-21 21:50:01 +00:00
PseudoSourceValue.h Fix broken build of llvm using clang. 2014-04-15 08:10:46 +00:00
RegAllocPBQP.h unique_ptrify PBQPBuilder::build 2014-09-02 17:42:01 +00:00
RegAllocRegistry.h
RegisterClassInfo.h [C++11] Replace OwningPtr with std::unique_ptr in places where it doesn't break the API. 2014-04-21 09:34:48 +00:00
RegisterPressure.h Move remaining LLVM_ENABLE_DUMP conditionals out of the headers 2014-07-01 21:19:13 +00:00
RegisterScavenging.h Changed the liveness tracking in the RegisterScavenger 2014-08-04 23:07:49 +00:00
ResourcePriorityQueue.h [C++11] More 'nullptr' conversion. In some cases just using a boolean check instead of comparing to nullptr. 2014-04-15 06:32:26 +00:00
RuntimeLibcalls.h CodeGen: generate single libcall for fptrunc -> f16 operations. 2014-07-17 11:12:12 +00:00
ScheduleDAG.h [C++11] More 'nullptr' conversion. In some cases just using a boolean check instead of comparing to nullptr. 2014-04-14 00:51:57 +00:00
ScheduleDAGInstrs.h Cleanup: Delete seemingly unused reference to MachineDominatorTree from ScheduleDAGInstrs. 2014-08-20 20:57:26 +00:00
ScheduleDFS.h Move remaining LLVM_ENABLE_DUMP conditionals out of the headers 2014-07-01 21:19:13 +00:00
ScheduleHazardRecognizer.h
SchedulerRegistry.h
ScoreboardHazardRecognizer.h [C++11] More 'nullptr' conversion. In some cases just using a boolean check instead of comparing to nullptr. 2014-04-14 00:51:57 +00:00
SelectionDAG.h Move the complex address expression out of DIVariable and into an extra 2014-10-01 18:55:02 +00:00
SelectionDAGISel.h Remove the TargetMachine forwards for TargetSubtargetInfo based 2014-08-04 21:25:23 +00:00
SelectionDAGNodes.h Repace SmallPtrSet with SmallPtrSetImpl in function arguments to avoid needing to mention the size. 2014-08-21 05:55:13 +00:00
SlotIndexes.h [C++11] More 'nullptr' conversion. In some cases just using a boolean check instead of comparing to nullptr. 2014-04-14 00:51:57 +00:00
StackMapLivenessAnalysis.h Canonicalize header guards into a common format. 2014-08-13 16:26:38 +00:00
StackMaps.h Add and update reset() and doInitialization() methods to MC* and passes. 2014-09-17 09:25:36 +00:00
StackProtector.h [C++11] More 'nullptr' conversion. In some cases just using a boolean check instead of comparing to nullptr. 2014-04-14 00:51:57 +00:00
TargetLoweringObjectFileImpl.h CodeGen: Stick constant pool entries in COMDAT sections for WinCOFF 2014-07-14 22:57:27 +00:00
TargetSchedule.h Change MCSchedModel to be a struct of statically initialized data. 2014-09-02 17:43:54 +00:00
ValueTypes.h [C++11] More 'nullptr' conversion or in some cases just using a boolean check instead of comparing to nullptr. 2014-04-09 06:08:46 +00:00
ValueTypes.td
VirtRegMap.h [C++11] More 'nullptr' conversion. In some cases just using a boolean check instead of comparing to nullptr. 2014-04-14 00:51:57 +00:00