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84f0cdcd15
llvm-mirror/include/llvm/CodeGen
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Jatin Bhateja 84f0cdcd15 [X86] Improvement in CodeGen instruction selection for LEAs (re-applying post required revision changes.) 
Summary:
   1/  Operand folding during complex pattern matching for LEAs has been
       extended, such that it promotes Scale to accommodate similar operand
       appearing in the DAG.
       e.g.
         T1 = A + B
         T2 = T1 + 10
         T3 = T2 + A
       For above DAG rooted at T3, X86AddressMode will no look like
         Base = B , Index = A , Scale = 2 , Disp = 10

   2/  During OptimizeLEAPass down the pipeline factorization is now performed over LEAs
       so that if there is an opportunity then complex LEAs (having 3 operands)
       could be factored out.
       e.g.
         leal 1(%rax,%rcx,1), %rdx
         leal 1(%rax,%rcx,2), %rcx
       will be factored as following
         leal 1(%rax,%rcx,1), %rdx
         leal (%rdx,%rcx)   , %edx

   3/ Aggressive operand folding for AM based selection for LEAs is sensitive to loops,
      thus avoiding creation of any complex LEAs within a loop.

Reviewers: lsaba, RKSimon, craig.topper, qcolombet, jmolloy

Reviewed By: lsaba

Subscribers: jmolloy, spatel, igorb, llvm-commits

    Differential Revision: https://reviews.llvm.org/D35014

llvm-svn: 314886
2017-10-04 09:02:10 +00:00
..
GlobalISel [CodeGen] Fix some Clang-tidy modernize-use-using and Include What You Use warnings; other minor fixes (NFC). 2017-09-29 21:55:49 +00:00
MIRParser CodeGen: Refactor MIR parsing 2017-06-06 00:44:35 +00:00
PBQP [CodeGen] Fix some Clang-tidy modernize-use-using and Include What You Use warnings; other minor fixes (NFC). 2017-06-01 23:25:02 +00:00
Analysis.h
AsmPrinter.h Change encodeU/SLEB128 to pad to certain number of bytes 2017-09-15 20:34:47 +00:00
AtomicExpandUtils.h [CodeGen] Fix some Clang-tidy modernize-use-using and Include What You Use warnings; other minor fixes (NFC). 2017-05-24 23:10:29 +00:00
BasicTTIImpl.h Revert "Use the basic cost if a GEP is not used as addressing mode" 2017-09-29 22:04:45 +00:00
CalcSpillWeights.h [CodeGen] Fix some Clang-tidy modernize-use-using and Include What You Use warnings; other minor fixes (NFC). 2017-09-29 21:55:49 +00:00
CallingConvLower.h [CodeGen] Fix some Clang-tidy modernize-use-using and Include What You Use warnings; other minor fixes (NFC). 2017-09-29 21:55:49 +00:00
CommandFlags.h Delete Default and JITDefault code models 2017-08-03 02:16:21 +00:00
DAGCombine.h
DFAPacketizer.h [CodeGen] Fix some Clang-tidy modernize-use-using and Include What You Use warnings; other minor fixes (NFC). 2017-06-07 23:53:32 +00:00
DIE.h Mark dump() methods as const. NFC 2017-06-21 22:19:17 +00:00
DIEValue.def
DwarfStringPoolEntry.h
EdgeBundles.h
ExecutionDepsFix.h [CodeGen] Fix some Clang-tidy modernize-use-using and Include What You Use warnings; other minor fixes (NFC). 2017-06-07 23:53:32 +00:00
ExpandReductions.h Add a late IR expansion pass for the experimental reduction intrinsics. 2017-05-10 09:42:49 +00:00
FastISel.h [CodeGen] Fix some Clang-tidy modernize-use-using and Include What You Use warnings; other minor fixes (NFC). 2017-06-07 23:53:32 +00:00
FaultMaps.h [CodeGen] Fix some Clang-tidy modernize-use-using and Include What You Use warnings; other minor fixes (NFC). 2017-05-24 23:10:29 +00:00
FunctionLoweringInfo.h ISel: Fix FastISel of swifterror values 2017-06-15 17:34:42 +00:00
GCMetadata.h [CodeGen] Fix some Clang-tidy modernize-use-using and Include What You Use warnings; other minor fixes (NFC). 2017-06-07 23:53:32 +00:00
GCMetadataPrinter.h [CodeGen] Fix some Clang-tidy modernize-use-using and Include What You Use warnings; other minor fixes (NFC). 2017-06-07 23:53:32 +00:00
GCs.h
GCStrategy.h [CodeGen] Fix some Clang-tidy modernize-use-using and Include What You Use warnings; other minor fixes (NFC). 2017-06-07 23:53:32 +00:00
IntrinsicLowering.h
ISDOpcodes.h Add llvm.codeview.annotation to implement MSVC __annotation 2017-09-05 20:14:58 +00:00
LatencyPriorityQueue.h Remove usages of deprecated std::unary_function and std::binary_function. 2017-09-14 18:33:25 +00:00
LazyMachineBlockFrequencyInfo.h
LexicalScopes.h Mark dump() methods as const. NFC 2017-06-21 22:19:17 +00:00
LinkAllAsmWriterComponents.h
LinkAllCodegenComponents.h
LiveInterval.h Sort the remaining #include lines in include/... and lib/.... 2017-06-06 11:49:48 +00:00
LiveIntervalAnalysis.h [CodeGen] Fix some Clang-tidy modernize-use-using and Include What You Use warnings; other minor fixes (NFC). 2017-05-24 23:10:29 +00:00
LiveIntervalUnion.h [CodeGen] Fix some Clang-tidy modernize-use-using and Include What You Use warnings; other minor fixes (NFC). 2017-05-24 23:10:29 +00:00
LivePhysRegs.h [IfConversion] More simple, correct dead/kill liveness handling 2017-09-14 15:53:11 +00:00
LiveRangeEdit.h [CodeGen] Fix some Clang-tidy modernize-use-using and Include What You Use warnings; other minor fixes (NFC). 2017-05-24 23:10:29 +00:00
LiveRegMatrix.h
LiveRegUnits.h Preserve existing regs when adding pristines to LivePhysRegs/LiveRegUnits 2017-09-08 16:29:50 +00:00
LiveStackAnalysis.h [CodeGen] Fix some Clang-tidy modernize-use-using and Include What You Use warnings; other minor fixes (NFC). 2017-05-24 23:10:29 +00:00
LiveVariables.h
LowLevelType.h
MachineBasicBlock.h Remove usages of deprecated std::unary_function and std::binary_function. 2017-09-14 18:33:25 +00:00
MachineBlockFrequencyInfo.h [CodeGen] Fix some Clang-tidy modernize-use-using and Include What You Use warnings; other minor fixes (NFC). 2017-05-24 23:10:29 +00:00
MachineBranchProbabilityInfo.h
MachineCombinerPattern.h [AArch64][MachineCombine] Fold FNMUL+FSUB -> FNMADD. 2017-05-11 20:07:24 +00:00
MachineConstantPool.h [CodeGen] Fix some Clang-tidy modernize-use-using and Include What You Use warnings; other minor fixes (NFC). 2017-05-31 01:10:10 +00:00
MachineDominanceFrontier.h [Dominators] Change Roots type to SmallVector 2017-07-26 18:27:39 +00:00
MachineDominators.h [Dominators] Change Roots type to SmallVector 2017-07-26 18:27:39 +00:00
MachineFrameInfo.h Add "Restored" flag to CalleeSavedInfo 2017-08-10 16:17:32 +00:00
MachineFunction.h Add llvm.codeview.annotation to implement MSVC __annotation 2017-09-05 20:14:58 +00:00
MachineFunctionPass.h Sort the remaining #include lines in include/... and lib/.... 2017-06-06 11:49:48 +00:00
MachineInstr.h [X86] Improvement in CodeGen instruction selection for LEAs (re-applying post required revision changes.) 2017-10-04 09:02:10 +00:00
MachineInstrBuilder.h [DebugInfo] Add missing DW_OP_deref when an NRVO pointer is spilled 2017-09-15 21:49:56 +00:00
MachineInstrBundle.h
MachineInstrBundleIterator.h [CodeGen] Fix some Clang-tidy modernize-use-using and Include What You Use warnings; other minor fixes (NFC). 2017-05-31 01:10:10 +00:00
MachineJumpTableInfo.h
MachineLoopInfo.h Use a BumpPtrAllocator for Loop objects 2017-09-28 02:45:42 +00:00
MachineMemOperand.h Add an ID field to StackObjects 2017-07-20 21:03:45 +00:00
MachineModuleInfo.h [CodeGen] Emit necessary .note sections for -fsplit-stack 2017-09-27 19:34:00 +00:00
MachineModuleInfoImpls.h [WebAssembly] Use __stack_pointer global when writing wasm binary 2017-06-16 23:59:10 +00:00
MachineOperand.h Pacify gcc's -Wnum-compare after r313775 2017-09-20 18:00:02 +00:00
MachineOptimizationRemarkEmitter.h This patch fixes https://bugs.llvm.org/show_bug.cgi?id=32352 2017-09-15 20:10:09 +00:00
MachinePassRegistry.h [CodeGen] Fix some Clang-tidy modernize-use-using and Include What You Use warnings; other minor fixes (NFC). 2017-06-26 22:44:03 +00:00
MachinePostDominators.h [Dominators] Change Roots type to SmallVector 2017-07-26 18:27:39 +00:00
MachineRegionInfo.h [CodeGen] Fix some Clang-tidy modernize-use-using and Include What You Use warnings; other minor fixes (NFC). 2017-06-01 23:25:02 +00:00
MachineRegisterInfo.h Cleanup some problems with LLVM_ENABLE_DUMP in release builds, and 2017-09-27 21:19:56 +00:00
MachineScheduler.h Cleanup some problems with LLVM_ENABLE_DUMP in release builds, and 2017-09-27 21:19:56 +00:00
MachineSSAUpdater.h [CodeGen] Fix some Clang-tidy modernize-use-using and Include What You Use warnings; other minor fixes (NFC). 2017-09-11 23:00:48 +00:00
MachineTraceMetrics.h Recommit [MachineCombiner] Update instruction depths incrementally for large BBs. 2017-09-20 11:54:37 +00:00
MachineValueType.h Revert r313782 "[TableGen] Add a DenseMapInfo for MachineValueType." 2017-09-21 04:54:59 +00:00
MachORelocation.h
MacroFusion.h [CodeGen] Fix some Clang-tidy modernize-use-using and Include What You Use warnings; other minor fixes (NFC). 2017-06-26 22:44:03 +00:00
MIRPrinter.h MIParser/MIRPrinter: Compute block successors if not explicitely specified 2017-05-05 21:09:30 +00:00
MIRYamlMapping.h MIR: Serialize CaleeSavedInfo Restored flag 2017-09-28 18:52:14 +00:00
ParallelCG.h
Passes.h Revert "Re-enable "[MachineCopyPropagation] Extend pass to do COPY source forwarding"" 2017-10-03 16:59:13 +00:00
PBQPRAConstraint.h [CodeGen] Fix some Clang-tidy modernize-use-using and Include What You Use warnings; other minor fixes (NFC). 2017-06-01 23:25:02 +00:00
PreISelIntrinsicLowering.h [CodeGen] Fix some Clang-tidy modernize and Include What You Use warnings; other minor fixes (NFC). 2017-09-13 21:15:20 +00:00
PseudoSourceValue.h Add AddresSpace to PseudoSourceValue. 2017-09-14 20:53:51 +00:00
RegAllocPBQP.h [CodeGen] Fix some Clang-tidy modernize-use-using and Include What You Use warnings; other minor fixes (NFC). 2017-06-01 23:25:02 +00:00
RegAllocRegistry.h [CodeGen] Fix some Clang-tidy modernize-use-using and Include What You Use warnings; other minor fixes (NFC). 2017-06-07 23:53:32 +00:00
RegisterClassInfo.h
RegisterPressure.h [CodeGen] Fix some Clang-tidy modernize-use-using and Include What You Use warnings; other minor fixes (NFC). 2017-06-06 22:22:41 +00:00
RegisterScavenging.h RegScavenging: Add scavengeRegisterBackwards() 2017-06-17 02:08:18 +00:00
RegisterUsageInfo.h [CodeGen] Fix some Clang-tidy modernize-use-using and Include What You Use warnings; other minor fixes (NFC). 2017-06-06 22:22:41 +00:00
ResourcePriorityQueue.h Remove usages of deprecated std::unary_function and std::binary_function. 2017-09-14 18:33:25 +00:00
RuntimeLibcalls.def Move Runtime libcall definitions to a .def file 2017-07-19 21:53:30 +00:00
RuntimeLibcalls.h Move Runtime libcall definitions to a .def file 2017-07-19 21:53:30 +00:00
ScheduleDAG.h [CodeGen] Add dependency printer 2017-07-12 15:30:59 +00:00
ScheduleDAGInstrs.h [SystemZ, MachineScheduler] Improve post-RA scheduling. 2017-08-17 08:33:44 +00:00
ScheduleDAGMutation.h
ScheduleDFS.h Sort the remaining #include lines in include/... and lib/.... 2017-06-06 11:49:48 +00:00
ScheduleHazardRecognizer.h
SchedulerRegistry.h [CodeGen] Fix some Clang-tidy modernize-use-using and Include What You Use warnings; other minor fixes (NFC). 2017-06-06 22:22:41 +00:00
ScoreboardHazardRecognizer.h
SelectionDAG.h [X86] Improvement in CodeGen instruction selection for LEAs (re-applying post required revision changes.) 2017-10-04 09:02:10 +00:00
SelectionDAGAddressAnalysis.h [CodeGen] Fix some Clang-tidy modernize and Include What You Use warnings; other minor fixes (NFC). 2017-09-13 21:15:20 +00:00
SelectionDAGISel.h
SelectionDAGNodes.h [SelectionDAG] Teach simplifyDemandedBits to handle shifts by constant splat vectors 2017-09-25 19:26:08 +00:00
SelectionDAGTargetInfo.h [CodeGen] Fix some Clang-tidy modernize and Include What You Use warnings; other minor fixes (NFC). 2017-09-13 21:15:20 +00:00
SlotIndexes.h Sort the remaining #include lines in include/... and lib/.... 2017-06-06 11:49:48 +00:00
StackMaps.h [CodeGen] Fix some Clang-tidy modernize-use-using and Include What You Use warnings; other minor fixes (NFC). 2017-06-03 00:22:41 +00:00
StackProtector.h [CodeGen] Fix some Clang-tidy modernize-use-using and Include What You Use warnings; other minor fixes (NFC). 2017-06-07 23:53:32 +00:00
TailDuplicator.h Add test case for r311511 2017-08-23 03:17:59 +00:00
TargetLoweringObjectFileImpl.h IR: Replace the "Linker Options" module flag with "llvm.linker.options" named metadata. 2017-06-12 20:10:48 +00:00
TargetPassConfig.h [TargetPassConfig] Feature generic options to setup start/stop-after/before 2017-07-31 18:24:07 +00:00
TargetSchedule.h Cleanup some problems with LLVM_ENABLE_DUMP in release builds, and 2017-09-27 21:19:56 +00:00
UnreachableBlockElim.h
ValueTypes.h [CodeGen] Fix some Clang-tidy modernize-use-using and Include What You Use warnings; other minor fixes (NFC). 2017-06-26 22:44:03 +00:00
ValueTypes.td [MVT] add v1i1 MVT 2017-05-18 11:29:41 +00:00
VirtRegMap.h [CodeGen] Fix some Clang-tidy modernize and Include What You Use warnings; other minor fixes (NFC). 2017-09-13 21:15:20 +00:00
WinEHFuncInfo.h [CodeGen] Fix some Clang-tidy modernize-use-using and Include What You Use warnings; other minor fixes (NFC). 2017-06-03 00:22:41 +00:00