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llvm-mirror/lib/Target/AArch64
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Geoff Berry 0e859047b9 [AArch64] Improve add/sub/cmp isel of uxtw forms. 
Don't match the UXTW extended reg forms of ADD/ADDS/SUB/SUBS if the
32-bit to 64-bit zero-extend can be done for free by taking advantage
of the 32-bit defining instruction zeroing the upper 32-bits of the X
register destination.  This enables better instruction selection in a
few cases, such as:

  sub x0, xzr, x8
  instead of:
  mov x8, xzr
  sub x0, x8, w9, uxtw

  madd x0, x1, x1, x8
  instead of:
  mul x9, x1, x1
  add x0, x9, w8, uxtw

  cmp x2, x8
  instead of:
  sub x8, x2, w8, uxtw
  cmp x8, #0

  add x0, x8, x1, lsl #3
  instead of:
  lsl x9, x1, #3
  add x0, x9, w8, uxtw

Reviewers: t.p.northover, jmolloy

Subscribers: mcrosier, aemerson, llvm-commits, rengolin

Differential Revision: https://reviews.llvm.org/D24747

llvm-svn: 282413
2016-09-26 15:34:47 +00:00
..
AsmParser Defer asm errors to post-statement failure 2016-09-16 18:30:20 +00:00
Disassembler Replace "fallthrough" comments with LLVM_FALLTHROUGH 2016-08-17 05:10:15 +00:00
InstPrinter AArch64: TableGenerate system instruction operands. 2016-07-05 21:23:04 +00:00
MCTargetDesc Revert "AArch64: Set shift bit of TLSLE HI12 add instruction" 2016-09-21 08:24:41 +00:00
TargetInfo
Utils AArch64: try to fix optimized build failure. 2016-07-05 23:15:58 +00:00
AArch64.h [AArch64] Register passes so they can be run by llc 2016-08-01 05:56:57 +00:00
AArch64.td Revert part of "AArch64: Do not test for CPUs, use SubtargetFeatures" 2016-09-20 19:02:09 +00:00
AArch64A53Fix835769.cpp MachineFunctionProperties/MIRParser: Rename AllVRegsAllocated->NoVRegs, compute it 2016-08-25 01:27:13 +00:00
AArch64A57FPLoadBalancing.cpp MachineFunctionProperties/MIRParser: Rename AllVRegsAllocated->NoVRegs, compute it 2016-08-25 01:27:13 +00:00
AArch64AddressTypePromotion.cpp [AArch64] Register passes so they can be run by llc 2016-08-01 05:56:57 +00:00
AArch64AdvSIMDScalarPass.cpp [AArch64] Register passes so they can be run by llc 2016-08-01 05:56:57 +00:00
AArch64AsmPrinter.cpp Use abstraction in AArch64AsmPrinter::lowerSTACKMAP. NFCI 2016-08-31 12:43:49 +00:00
AArch64BranchRelaxation.cpp Finish renaming remaining analyzeBranch functions 2016-09-14 20:43:16 +00:00
AArch64CallingConvention.h
AArch64CallingConvention.td GlobalISel: produce correct code for signext/zeroext ABI flags. 2016-09-21 12:57:45 +00:00
AArch64CallLowering.cpp GlobalISel: handle stack-based parameters on AArch64. 2016-09-22 13:49:25 +00:00
AArch64CallLowering.h GlobalISel: handle stack-based parameters on AArch64. 2016-09-22 13:49:25 +00:00
AArch64CleanupLocalDynamicTLSPass.cpp [AArch64] Register passes so they can be run by llc 2016-08-01 05:56:57 +00:00
AArch64CollectLOH.cpp Replace incorrect "#ifdef DEBUG" with "#ifndef NDEBUG". 2016-08-30 03:16:16 +00:00
AArch64ConditionalCompares.cpp Finish renaming remaining analyzeBranch functions 2016-09-14 20:43:16 +00:00
AArch64ConditionOptimizer.cpp [AArch64] Register passes so they can be run by llc 2016-08-01 05:56:57 +00:00
AArch64DeadRegisterDefinitionsPass.cpp MachineFunctionProperties/MIRParser: Rename AllVRegsAllocated->NoVRegs, compute it 2016-08-25 01:27:13 +00:00
AArch64ExpandPseudoInsts.cpp [AArch64] Register AArch64LoadStoreOptimizer so it can be run by llc -run-pass. NFCI. 2016-07-20 21:45:58 +00:00
AArch64FastISel.cpp Swift Calling Convetion: add support for AArch64. 2016-08-26 19:28:17 +00:00
AArch64FrameLowering.cpp Move helpers into anonymous namespaces. NFC. 2016-08-06 11:13:10 +00:00
AArch64FrameLowering.h [PEI, AArch64] Use empty spaces in stack area for local stack slot allocation. 2016-06-02 16:22:07 +00:00
AArch64GenRegisterBankInfo.def [AArch64][RegisterBankInfo] Switch to TableGen'ed like PartialMapping. 2016-09-23 00:14:36 +00:00
AArch64InstrAtomics.td AArch64: properly calculate cmpxchg status in FastISel. 2016-08-02 20:22:36 +00:00
AArch64InstrFormats.td [SelectionDAG] Rename fextend -> fpextend, fround -> fpround, frnd -> fround 2016-08-18 20:08:15 +00:00
AArch64InstrInfo.cpp [AArch64] Support for FP FMA when -ffp-contract=fast 2016-09-15 19:55:23 +00:00
AArch64InstrInfo.h Finish renaming remaining analyzeBranch functions 2016-09-14 20:43:16 +00:00
AArch64InstrInfo.td [AArch64] Improve add/sub/cmp isel of uxtw forms. 2016-09-26 15:34:47 +00:00
AArch64InstructionSelector.cpp GlobalISel: remove "unsized" LLT 2016-09-15 10:09:59 +00:00
AArch64InstructionSelector.h [GlobalISel] Introduce an instruction selector. 2016-07-27 14:31:55 +00:00
AArch64ISelDAGToDAG.cpp [AArch64] Improve add/sub/cmp isel of uxtw forms. 2016-09-26 15:34:47 +00:00
AArch64ISelLowering.cpp Add support to optionally limit the size of jump tables. 2016-09-26 15:32:33 +00:00
AArch64ISelLowering.h [AArch64] Improve add/sub/cmp isel of uxtw forms. 2016-09-26 15:34:47 +00:00
AArch64LoadStoreOptimizer.cpp MachineFunctionProperties/MIRParser: Rename AllVRegsAllocated->NoVRegs, compute it 2016-08-25 01:27:13 +00:00
AArch64MachineFunctionInfo.h [AArch64] Mark various *Info classes as 'final'. NFC. 2016-07-27 14:31:46 +00:00
AArch64MachineLegalizer.cpp GlobalISel: legalize GEP instructions with small offsets. 2016-09-15 11:02:19 +00:00
AArch64MachineLegalizer.h Fix include case. NFC. 2016-07-22 20:15:19 +00:00
AArch64MCInstLower.cpp
AArch64MCInstLower.h
AArch64PBQPRegAlloc.cpp CodeGen: Take MachineInstr& in SlotIndexes and LiveIntervals, NFC 2016-02-27 06:40:41 +00:00
AArch64PBQPRegAlloc.h
AArch64PerfectShuffle.h
AArch64PromoteConstant.cpp [AArch64] Register passes so they can be run by llc 2016-08-01 05:56:57 +00:00
AArch64RedundantCopyElimination.cpp MachineFunctionProperties/MIRParser: Rename AllVRegsAllocated->NoVRegs, compute it 2016-08-25 01:27:13 +00:00
AArch64RegisterBankInfo.cpp [RegisterBankInfo] Uniquely generate ValueMapping. 2016-09-24 04:53:52 +00:00
AArch64RegisterBankInfo.h [RegisterBankInfo] Move to statically allocated RegisterBank. 2016-09-22 02:10:37 +00:00
AArch64RegisterInfo.cpp MachineFunction: Return reference for getFrameInfo(); NFC 2016-07-28 18:40:00 +00:00
AArch64RegisterInfo.h [AArch64] Mark various *Info classes as 'final'. NFC. 2016-07-27 14:31:46 +00:00
AArch64RegisterInfo.td Fix typo in comment. NFC 2016-04-24 17:55:57 +00:00
AArch64SchedA53.td Remove MinLatency in SchedMachineModel. NFC. 2016-04-26 00:37:46 +00:00
AArch64SchedA57.td AArch64: Reenable CompleteModel for A53, A57 and Kryo models 2016-03-01 21:55:35 +00:00
AArch64SchedA57WriteRes.td
AArch64SchedCyclone.td CodeGen: Use MachineInstr& in TargetInstrInfo, NFC 2016-06-30 00:01:54 +00:00
AArch64SchedKryo.td AArch64: Reenable CompleteModel for A53, A57 and Kryo models 2016-03-01 21:55:35 +00:00
AArch64SchedKryoDetails.td
AArch64SchedM1.td [AArch64] Adjust the scheduling model for Exynos M1. 2016-09-06 19:22:29 +00:00
AArch64Schedule.td CodeGen: Use MachineInstr& in TargetInstrInfo, NFC 2016-06-30 00:01:54 +00:00
AArch64SchedVulcan.td [AArch64] Add Broadcom Vulcan scheduling model. 2016-06-30 06:42:31 +00:00
AArch64SelectionDAGInfo.cpp [SDAG] Remove FixedArgs parameter from CallLoweringInfo::setCallee 2016-06-22 12:54:25 +00:00
AArch64SelectionDAGInfo.h Pass DebugLoc and SDLoc by const ref. 2016-06-12 15:39:02 +00:00
AArch64StorePairSuppress.cpp [AArch64] Register passes so they can be run by llc 2016-08-01 05:56:57 +00:00
AArch64Subtarget.cpp Add support to optionally limit the size of jump tables. 2016-09-26 15:32:33 +00:00
AArch64Subtarget.h Add support to optionally limit the size of jump tables. 2016-09-26 15:32:33 +00:00
AArch64SystemOperands.td AArch64: TableGenerate system instruction operands. 2016-07-05 21:23:04 +00:00
AArch64TargetMachine.cpp Revert "[AArch64] Use the reciprocal estimation machinery" 2016-09-20 19:02:06 +00:00
AArch64TargetMachine.h Revert "[AArch64] Use the reciprocal estimation machinery" 2016-09-20 19:02:06 +00:00
AArch64TargetObjectFile.cpp Move the Mangler from the AsmPrinter down to TLOF and clean up the 2016-09-16 07:33:15 +00:00
AArch64TargetObjectFile.h Move the Mangler from the AsmPrinter down to TLOF and clean up the 2016-09-16 07:33:15 +00:00
AArch64TargetTransformInfo.cpp AArch64: Do not test for CPUs, use SubtargetFeatures 2016-06-02 18:03:53 +00:00
AArch64TargetTransformInfo.h [TTI] Add hook for vector extract with extension 2016-04-27 15:20:21 +00:00
CMakeLists.txt [GlobalISel] Introduce an instruction selector. 2016-07-27 14:31:55 +00:00
LLVMBuild.txt