131d157ae1ac2cd9c787dc3c1d28e64c682803844Jia Liu//===-- ARMSubtarget.h - Define Subtarget for the ARM ----------*- C++ -*--===// 2a8e2989ece6dc46df59b0768184028257f913843Evan Cheng// 3a8e2989ece6dc46df59b0768184028257f913843Evan Cheng// The LLVM Compiler Infrastructure 4a8e2989ece6dc46df59b0768184028257f913843Evan Cheng// 54ee451de366474b9c228b4e5fa573795a715216dChris Lattner// This file is distributed under the University of Illinois Open Source 64ee451de366474b9c228b4e5fa573795a715216dChris Lattner// License. See LICENSE.TXT for details. 7a8e2989ece6dc46df59b0768184028257f913843Evan Cheng// 8a8e2989ece6dc46df59b0768184028257f913843Evan Cheng//===----------------------------------------------------------------------===// 9a8e2989ece6dc46df59b0768184028257f913843Evan Cheng// 105b1b4489cf3a0f56f8be0673fc5cc380a32d277bEvan Cheng// This file declares the ARM specific subclass of TargetSubtargetInfo. 11a8e2989ece6dc46df59b0768184028257f913843Evan Cheng// 12a8e2989ece6dc46df59b0768184028257f913843Evan Cheng//===----------------------------------------------------------------------===// 13a8e2989ece6dc46df59b0768184028257f913843Evan Cheng 14a8e2989ece6dc46df59b0768184028257f913843Evan Cheng#ifndef ARMSUBTARGET_H 15a8e2989ece6dc46df59b0768184028257f913843Evan Cheng#define ARMSUBTARGET_H 16a8e2989ece6dc46df59b0768184028257f913843Evan Cheng 1794ca42ff0407d71bacc41de4032d8dbe6358d33dEvan Cheng#include "MCTargetDesc/ARMMCTargetDesc.h" 18b72d2a92b75daa9cbac7338aff0cd8ae04c2b4bdEvan Cheng#include "llvm/ADT/Triple.h" 19a1514e24cc24b050f53a12650e047799358833a1Chandler Carruth#include "llvm/MC/MCInstrItineraries.h" 20a1514e24cc24b050f53a12650e047799358833a1Chandler Carruth#include "llvm/Target/TargetSubtargetInfo.h" 21a8e2989ece6dc46df59b0768184028257f913843Evan Cheng#include <string> 22a8e2989ece6dc46df59b0768184028257f913843Evan Cheng 2394214703d97d8d9dfca88174ffc7e94820a85e62Evan Cheng#define GET_SUBTARGETINFO_HEADER 24385e930d55f3ecd3c9538823dfa5896a12461845Evan Cheng#include "ARMGenSubtargetInfo.inc" 2594214703d97d8d9dfca88174ffc7e94820a85e62Evan Cheng 26a8e2989ece6dc46df59b0768184028257f913843Evan Chengnamespace llvm { 27e4e4ed3b56f63e9343e01bf0b2ecd7c1f45d296cEvan Chengclass GlobalValue; 280ddff1b5359433faf2eb1c4ff5320ddcbd42f52fEvan Chengclass StringRef; 293382a840747c42c4a98eac802ee7b347a8ded1e4Renato Golinclass TargetOptions; 30a8e2989ece6dc46df59b0768184028257f913843Evan Cheng 3194214703d97d8d9dfca88174ffc7e94820a85e62Evan Chengclass ARMSubtarget : public ARMGenSubtargetInfo { 32a8e2989ece6dc46df59b0768184028257f913843Evan Chengprotected: 333ef1c8759a20167457eb7fd82ebcaffe7ccaa1d1Evan Cheng enum ARMProcFamilyEnum { 34e0f1d712f656d3f958b616013f1d6008c5678949Quentin Colombet Others, CortexA5, CortexA8, CortexA9, CortexA15, CortexR5, Swift 353ef1c8759a20167457eb7fd82ebcaffe7ccaa1d1Evan Cheng }; 363ef1c8759a20167457eb7fd82ebcaffe7ccaa1d1Evan Cheng 373ef1c8759a20167457eb7fd82ebcaffe7ccaa1d1Evan Cheng /// ARMProcFamily - ARM processor family: Cortex-A8, Cortex-A9, and others. 383ef1c8759a20167457eb7fd82ebcaffe7ccaa1d1Evan Cheng ARMProcFamilyEnum ARMProcFamily; 393ef1c8759a20167457eb7fd82ebcaffe7ccaa1d1Evan Cheng 40849eedce9921eb8f285cd0df0ad69ee5133459d1Joey Gouly /// HasV4TOps, HasV5TOps, HasV5TEOps, 41849eedce9921eb8f285cd0df0ad69ee5133459d1Joey Gouly /// HasV6Ops, HasV6T2Ops, HasV7Ops, HasV8Ops - 4239dfb0ff848be6b380ca81ff95d4ca4e0ae09c76Evan Cheng /// Specify whether target support specific ARM ISA variants. 4339dfb0ff848be6b380ca81ff95d4ca4e0ae09c76Evan Cheng bool HasV4TOps; 4439dfb0ff848be6b380ca81ff95d4ca4e0ae09c76Evan Cheng bool HasV5TOps; 4539dfb0ff848be6b380ca81ff95d4ca4e0ae09c76Evan Cheng bool HasV5TEOps; 4639dfb0ff848be6b380ca81ff95d4ca4e0ae09c76Evan Cheng bool HasV6Ops; 4739dfb0ff848be6b380ca81ff95d4ca4e0ae09c76Evan Cheng bool HasV6T2Ops; 4839dfb0ff848be6b380ca81ff95d4ca4e0ae09c76Evan Cheng bool HasV7Ops; 49849eedce9921eb8f285cd0df0ad69ee5133459d1Joey Gouly bool HasV8Ops; 5039dfb0ff848be6b380ca81ff95d4ca4e0ae09c76Evan Cheng 5131d2f08f8893f38d2d7293195f3707edfefbeeb6Joey Gouly /// HasVFPv2, HasVFPv3, HasVFPv4, HasV8FP, HasNEON - Specify what 524b4e62219be91839091f9e35d8accf877f925d81Anton Korobeynikov /// floating point ISAs are supported. 5339dfb0ff848be6b380ca81ff95d4ca4e0ae09c76Evan Cheng bool HasVFPv2; 5439dfb0ff848be6b380ca81ff95d4ca4e0ae09c76Evan Cheng bool HasVFPv3; 554b4e62219be91839091f9e35d8accf877f925d81Anton Korobeynikov bool HasVFPv4; 5631d2f08f8893f38d2d7293195f3707edfefbeeb6Joey Gouly bool HasV8FP; 5739dfb0ff848be6b380ca81ff95d4ca4e0ae09c76Evan Cheng bool HasNEON; 58a8e2989ece6dc46df59b0768184028257f913843Evan Cheng 591f0e404c87675ce75e34bcd91395c660fe1d4ac1David Goodwin /// UseNEONForSinglePrecisionFP - if the NEONFP attribute has been 601f0e404c87675ce75e34bcd91395c660fe1d4ac1David Goodwin /// specified. Use the method useNEONForSinglePrecisionFP() to 611f0e404c87675ce75e34bcd91395c660fe1d4ac1David Goodwin /// determine if NEON should actually be used. 6242a83f2d15cbbc08f5be19856198e3c885221e9cDavid Goodwin bool UseNEONForSinglePrecisionFP; 6342a83f2d15cbbc08f5be19856198e3c885221e9cDavid Goodwin 64eb1641d54a7eda7717304bc4d55d059208d8ebedBob Wilson /// UseMulOps - True if non-microcoded fused integer multiply-add and 65eb1641d54a7eda7717304bc4d55d059208d8ebedBob Wilson /// multiply-subtract instructions should be used. 66eb1641d54a7eda7717304bc4d55d059208d8ebedBob Wilson bool UseMulOps; 67eb1641d54a7eda7717304bc4d55d059208d8ebedBob Wilson 6848575f6ea7d5cd21ab29ca370f58fcf9ca31400bEvan Cheng /// SlowFPVMLx - If the VFP2 / NEON instructions are available, indicates 6948575f6ea7d5cd21ab29ca370f58fcf9ca31400bEvan Cheng /// whether the FP VML[AS] instructions are slow (if so, don't use them). 7048575f6ea7d5cd21ab29ca370f58fcf9ca31400bEvan Cheng bool SlowFPVMLx; 712676737e5ed3e4b5c89b4d06b60d998e9318eb73Jim Grosbach 72463d358f1dfdd28a6900f2f109a160be71d2a8efEvan Cheng /// HasVMLxForwarding - If true, NEON has special multiplier accumulator 73463d358f1dfdd28a6900f2f109a160be71d2a8efEvan Cheng /// forwarding to allow mul + mla being issued back to back. 74463d358f1dfdd28a6900f2f109a160be71d2a8efEvan Cheng bool HasVMLxForwarding; 75463d358f1dfdd28a6900f2f109a160be71d2a8efEvan Cheng 767a415999625f9791a8a7eea2027e628e29de15c0Evan Cheng /// SlowFPBrcc - True if floating point compare + branch is slow. 777a415999625f9791a8a7eea2027e628e29de15c0Evan Cheng bool SlowFPBrcc; 787a415999625f9791a8a7eea2027e628e29de15c0Evan Cheng 794761a8d6549125e21d84371a9783bd41de2f55faEvan Cheng /// InThumbMode - True if compiling for Thumb, false for ARM. 80963b03c1a9f6a9742671459f103ee9a566c6de58Evan Cheng bool InThumbMode; 8170459bef9ccd73b3a2a44fdd62f2509861112745Anton Korobeynikov 8294ca42ff0407d71bacc41de4032d8dbe6358d33dEvan Cheng /// HasThumb2 - True if Thumb2 instructions are supported. 8394ca42ff0407d71bacc41de4032d8dbe6358d33dEvan Cheng bool HasThumb2; 84a8e2989ece6dc46df59b0768184028257f913843Evan Cheng 85d598bd3aeea64fb0d2d3bd18de739a8a59cf043dAndrew Trick /// IsMClass - True if the subtarget belongs to the 'M' profile of CPUs - 86acad68da50581de905a994ed3c6b9c197bcea687James Molloy /// v6m, v7m for example. 87acad68da50581de905a994ed3c6b9c197bcea687James Molloy bool IsMClass; 88acad68da50581de905a994ed3c6b9c197bcea687James Molloy 897b4d31176efe6894bcfaa05257dd5783acda5ddcEvan Cheng /// NoARM - True if subtarget does not support ARM mode execution. 907b4d31176efe6894bcfaa05257dd5783acda5ddcEvan Cheng bool NoARM; 917b4d31176efe6894bcfaa05257dd5783acda5ddcEvan Cheng 920dad89fa94536284d51f60868326294b725a0c61David Goodwin /// PostRAScheduler - True if using post-register-allocation scheduler. 930dad89fa94536284d51f60868326294b725a0c61David Goodwin bool PostRAScheduler; 940dad89fa94536284d51f60868326294b725a0c61David Goodwin 95a8e2989ece6dc46df59b0768184028257f913843Evan Cheng /// IsR9Reserved - True if R9 is a not available as general purpose register. 96a8e2989ece6dc46df59b0768184028257f913843Evan Cheng bool IsR9Reserved; 973630e78db9268dbe81a9369a33e49b857804f2ecLauro Ramos Venancio 985cdc3a949af0cef7f2163f8a7acbf3049c226321Anton Korobeynikov /// UseMovt - True if MOVT / MOVW pairs are used for materialization of 32-bit 995cdc3a949af0cef7f2163f8a7acbf3049c226321Anton Korobeynikov /// imms (including global addresses). 1005cdc3a949af0cef7f2163f8a7acbf3049c226321Anton Korobeynikov bool UseMovt; 1015cdc3a949af0cef7f2163f8a7acbf3049c226321Anton Korobeynikov 1026d2f9cec715c50bca44816d9bdea97f8b63bf2a0Bob Wilson /// SupportsTailCall - True if the OS supports tail call. The dynamic linker 1036d2f9cec715c50bca44816d9bdea97f8b63bf2a0Bob Wilson /// must be able to synthesize call stubs for interworking between ARM and 1046d2f9cec715c50bca44816d9bdea97f8b63bf2a0Bob Wilson /// Thumb. 1056d2f9cec715c50bca44816d9bdea97f8b63bf2a0Bob Wilson bool SupportsTailCall; 1066d2f9cec715c50bca44816d9bdea97f8b63bf2a0Bob Wilson 107631379e79c0971c5bac13629b8caf8912ed4c35cAnton Korobeynikov /// HasFP16 - True if subtarget supports half-precision FP (We support VFP+HF 108631379e79c0971c5bac13629b8caf8912ed4c35cAnton Korobeynikov /// only so far) 109631379e79c0971c5bac13629b8caf8912ed4c35cAnton Korobeynikov bool HasFP16; 110631379e79c0971c5bac13629b8caf8912ed4c35cAnton Korobeynikov 11177f42b52781b6923924a93b8ab338d183887a592Bob Wilson /// HasD16 - True if subtarget is limited to 16 double precision 11277f42b52781b6923924a93b8ab338d183887a592Bob Wilson /// FP registers for VFPv3. 11377f42b52781b6923924a93b8ab338d183887a592Bob Wilson bool HasD16; 11477f42b52781b6923924a93b8ab338d183887a592Bob Wilson 11529402132f3e890a2771818f44987ede213297431Jim Grosbach /// HasHardwareDivide - True if subtarget supports [su]div 11629402132f3e890a2771818f44987ede213297431Jim Grosbach bool HasHardwareDivide; 11729402132f3e890a2771818f44987ede213297431Jim Grosbach 118eb1641d54a7eda7717304bc4d55d059208d8ebedBob Wilson /// HasHardwareDivideInARM - True if subtarget supports [su]div in ARM mode 119eb1641d54a7eda7717304bc4d55d059208d8ebedBob Wilson bool HasHardwareDivideInARM; 120eb1641d54a7eda7717304bc4d55d059208d8ebedBob Wilson 12129402132f3e890a2771818f44987ede213297431Jim Grosbach /// HasT2ExtractPack - True if subtarget supports thumb2 extract/pack 12229402132f3e890a2771818f44987ede213297431Jim Grosbach /// instructions. 12329402132f3e890a2771818f44987ede213297431Jim Grosbach bool HasT2ExtractPack; 12429402132f3e890a2771818f44987ede213297431Jim Grosbach 12511db068721d44fd5f9b0c2a3a4c90f813d2eae9cEvan Cheng /// HasDataBarrier - True if the subtarget supports DMB / DSB data barrier 12611db068721d44fd5f9b0c2a3a4c90f813d2eae9cEvan Cheng /// instructions. 12711db068721d44fd5f9b0c2a3a4c90f813d2eae9cEvan Cheng bool HasDataBarrier; 12811db068721d44fd5f9b0c2a3a4c90f813d2eae9cEvan Cheng 129e44be6381609d31b2d8879dbd5107e01404fa475Evan Cheng /// Pref32BitThumb - If true, codegen would prefer 32-bit Thumb instructions 130e44be6381609d31b2d8879dbd5107e01404fa475Evan Cheng /// over 16-bit ones. 131e44be6381609d31b2d8879dbd5107e01404fa475Evan Cheng bool Pref32BitThumb; 132e44be6381609d31b2d8879dbd5107e01404fa475Evan Cheng 1335dde893c2bac9e1569c38429f756c1d723e8edf2Bob Wilson /// AvoidCPSRPartialUpdate - If true, codegen would avoid using instructions 1345dde893c2bac9e1569c38429f756c1d723e8edf2Bob Wilson /// that partially update CPSR and add false dependency on the previous 1355dde893c2bac9e1569c38429f756c1d723e8edf2Bob Wilson /// CPSR setting instruction. 1365dde893c2bac9e1569c38429f756c1d723e8edf2Bob Wilson bool AvoidCPSRPartialUpdate; 1375dde893c2bac9e1569c38429f756c1d723e8edf2Bob Wilson 138139e407d526193017d42473c8d4892933de78f14Evan Cheng /// AvoidMOVsShifterOperand - If true, codegen should avoid using flag setting 139139e407d526193017d42473c8d4892933de78f14Evan Cheng /// movs with shifter operand (i.e. asr, lsl, lsr). 140139e407d526193017d42473c8d4892933de78f14Evan Cheng bool AvoidMOVsShifterOperand; 141139e407d526193017d42473c8d4892933de78f14Evan Cheng 1424bfcd4acbc7d12aa55f8de9af84a38422f0f6d83Evan Cheng /// HasRAS - Some processors perform return stack prediction. CodeGen should 1434bfcd4acbc7d12aa55f8de9af84a38422f0f6d83Evan Cheng /// avoid issue "normal" call instructions to callees which do not return. 1444bfcd4acbc7d12aa55f8de9af84a38422f0f6d83Evan Cheng bool HasRAS; 1454bfcd4acbc7d12aa55f8de9af84a38422f0f6d83Evan Cheng 146dfed19fe2c34c1209108afa58e8ab014ffd894e2Evan Cheng /// HasMPExtension - True if the subtarget supports Multiprocessing 147dfed19fe2c34c1209108afa58e8ab014ffd894e2Evan Cheng /// extension (ARMv7 only). 148dfed19fe2c34c1209108afa58e8ab014ffd894e2Evan Cheng bool HasMPExtension; 149dfed19fe2c34c1209108afa58e8ab014ffd894e2Evan Cheng 150fcba5e6b645df89ae6b93911fe0f80b08fa6b44cJim Grosbach /// FPOnlySP - If true, the floating point unit only supports single 151fcba5e6b645df89ae6b93911fe0f80b08fa6b44cJim Grosbach /// precision. 152fcba5e6b645df89ae6b93911fe0f80b08fa6b44cJim Grosbach bool FPOnlySP; 153fcba5e6b645df89ae6b93911fe0f80b08fa6b44cJim Grosbach 154b94a353242b26af5c0969926a6b84664e342b586Tim Northover /// If true, the processor supports the Performance Monitor Extensions. These 155b94a353242b26af5c0969926a6b84664e342b586Tim Northover /// include a generic cycle-counter as well as more fine-grained (often 156b94a353242b26af5c0969926a6b84664e342b586Tim Northover /// implementation-specific) events. 157b94a353242b26af5c0969926a6b84664e342b586Tim Northover bool HasPerfMon; 158b94a353242b26af5c0969926a6b84664e342b586Tim Northover 1598c9e52a9fc1f99cf80c499ef10e6c8a54ef899d4Tim Northover /// HasTrustZone - if true, processor supports TrustZone security extensions 1608c9e52a9fc1f99cf80c499ef10e6c8a54ef899d4Tim Northover bool HasTrustZone; 1618c9e52a9fc1f99cf80c499ef10e6c8a54ef899d4Tim Northover 16202aba73a9ec04d0de9424422249af3948ca9573aBob Wilson /// AllowsUnalignedMem - If true, the subtarget allows unaligned memory 16302aba73a9ec04d0de9424422249af3948ca9573aBob Wilson /// accesses for some types. For details, see 16402aba73a9ec04d0de9424422249af3948ca9573aBob Wilson /// ARMTargetLowering::allowsUnalignedMemoryAccesses(). 16502aba73a9ec04d0de9424422249af3948ca9573aBob Wilson bool AllowsUnalignedMem; 16602aba73a9ec04d0de9424422249af3948ca9573aBob Wilson 167a7603982dbf9e240ecc7ed6eddcd1cdb868107acJim Grosbach /// Thumb2DSP - If true, the subtarget supports the v7 DSP (saturating arith 168a7603982dbf9e240ecc7ed6eddcd1cdb868107acJim Grosbach /// and such) instructions in Thumb2 code. 169a7603982dbf9e240ecc7ed6eddcd1cdb868107acJim Grosbach bool Thumb2DSP; 170a7603982dbf9e240ecc7ed6eddcd1cdb868107acJim Grosbach 1710f156af8312a0f3ce88e5c006bf2a52691039cebEli Bendersky /// NaCl TRAP instruction is generated instead of the regular TRAP. 1720f156af8312a0f3ce88e5c006bf2a52691039cebEli Bendersky bool UseNaClTrap; 1730f156af8312a0f3ce88e5c006bf2a52691039cebEli Bendersky 1743382a840747c42c4a98eac802ee7b347a8ded1e4Renato Golin /// Target machine allowed unsafe FP math (such as use of NEON fp) 1753382a840747c42c4a98eac802ee7b347a8ded1e4Renato Golin bool UnsafeFPMath; 1763382a840747c42c4a98eac802ee7b347a8ded1e4Renato Golin 177a8e2989ece6dc46df59b0768184028257f913843Evan Cheng /// stackAlignment - The minimum alignment known to hold of the stack frame on 178a8e2989ece6dc46df59b0768184028257f913843Evan Cheng /// entry to the function and which must be maintained by every function. 179a8e2989ece6dc46df59b0768184028257f913843Evan Cheng unsigned stackAlignment; 180a8e2989ece6dc46df59b0768184028257f913843Evan Cheng 18141a024385f1220eadc48b48cb4c044a5fbc1b361Anton Korobeynikov /// CPUString - String name of used CPU. 18241a024385f1220eadc48b48cb4c044a5fbc1b361Anton Korobeynikov std::string CPUString; 18341a024385f1220eadc48b48cb4c044a5fbc1b361Anton Korobeynikov 184b72d2a92b75daa9cbac7338aff0cd8ae04c2b4bdEvan Cheng /// TargetTriple - What processor and OS we're targeting. 185b72d2a92b75daa9cbac7338aff0cd8ae04c2b4bdEvan Cheng Triple TargetTriple; 186b72d2a92b75daa9cbac7338aff0cd8ae04c2b4bdEvan Cheng 187d43b5c97cff06d7840b974ca84fa0639d2567968Andrew Trick /// SchedModel - Processor specific instruction costs. 188d43b5c97cff06d7840b974ca84fa0639d2567968Andrew Trick const MCSchedModel *SchedModel; 189d43b5c97cff06d7840b974ca84fa0639d2567968Andrew Trick 1908557c2bcb8002169d890eb8485e9a1d7219e4343Evan Cheng /// Selected instruction itineraries (one entry per itinerary class.) 1918557c2bcb8002169d890eb8485e9a1d7219e4343Evan Cheng InstrItineraryData InstrItins; 192764ab52dd80310a205c9888bf166d09dab858f90Jim Grosbach 1933382a840747c42c4a98eac802ee7b347a8ded1e4Renato Golin /// Options passed via command line that could influence the target 1943382a840747c42c4a98eac802ee7b347a8ded1e4Renato Golin const TargetOptions &Options; 1953382a840747c42c4a98eac802ee7b347a8ded1e4Renato Golin 196a8e2989ece6dc46df59b0768184028257f913843Evan Cheng public: 1971a3771e30e48b9cc21ccdc79fc9cf37ec4104b17Evan Cheng enum { 1983630e78db9268dbe81a9369a33e49b857804f2ecLauro Ramos Venancio ARM_ABI_APCS, 1993630e78db9268dbe81a9369a33e49b857804f2ecLauro Ramos Venancio ARM_ABI_AAPCS // ARM EABI 2003630e78db9268dbe81a9369a33e49b857804f2ecLauro Ramos Venancio } TargetABI; 2013630e78db9268dbe81a9369a33e49b857804f2ecLauro Ramos Venancio 202a8e2989ece6dc46df59b0768184028257f913843Evan Cheng /// This constructor initializes the data members to match that 2033be03406c9c3b2075d5ae416499af2f15f703d6fDaniel Dunbar /// of the specified triple. 204a8e2989ece6dc46df59b0768184028257f913843Evan Cheng /// 205276365dd4bc0c2160f91fd8062ae1fc90c86c324Evan Cheng ARMSubtarget(const std::string &TT, const std::string &CPU, 2063382a840747c42c4a98eac802ee7b347a8ded1e4Renato Golin const std::string &FS, const TargetOptions &Options); 207a8e2989ece6dc46df59b0768184028257f913843Evan Cheng 208707e0184233f27e0e9f9aee0309f2daab8cfe7f8Dan Gohman /// getMaxInlineSizeThreshold - Returns the maximum memset / memcpy size 209707e0184233f27e0e9f9aee0309f2daab8cfe7f8Dan Gohman /// that still makes it profitable to inline the call. 210e0703c84ddeb1a1276de4e38210c1127ef5df130Rafael Espindola unsigned getMaxInlineSizeThreshold() const { 2114d6113ee0699ac1eff46971881179de53e2eb810Bob Wilson // FIXME: For now, we don't lower memcpy's to loads / stores for Thumb1. 2124d6113ee0699ac1eff46971881179de53e2eb810Bob Wilson // Change this once Thumb1 ldmia / stmia support is added. 2134d6113ee0699ac1eff46971881179de53e2eb810Bob Wilson return isThumb1Only() ? 0 : 64; 214e0703c84ddeb1a1276de4e38210c1127ef5df130Rafael Espindola } 2156d7d2aa38a247426e2ccf53e3c6ad0315c9a4d8cAnton Korobeynikov /// ParseSubtargetFeatures - Parses features string setting specified 216a8e2989ece6dc46df59b0768184028257f913843Evan Cheng /// subtarget options. Definition of function is auto generated by tblgen. 2170ddff1b5359433faf2eb1c4ff5320ddcbd42f52fEvan Cheng void ParseSubtargetFeatures(StringRef CPU, StringRef FS); 218a8e2989ece6dc46df59b0768184028257f913843Evan Cheng 219b26f98fa1f098b527cc84ef7535fe84d89953c21Renato Golin /// \brief Reset the features for the ARM target. 2204788d14b484ba9e2fe19855fd6c97a3659980fcaBill Wendling virtual void resetSubtargetFeatures(const MachineFunction *MF); 221901d80065c9afa0ba33e8546c2e1e99a00aceb14Bill Wendlingprivate: 222901d80065c9afa0ba33e8546c2e1e99a00aceb14Bill Wendling void initializeEnvironment(); 2234788d14b484ba9e2fe19855fd6c97a3659980fcaBill Wendling void resetSubtargetFeatures(StringRef CPU, StringRef FS); 224901d80065c9afa0ba33e8546c2e1e99a00aceb14Bill Wendlingpublic: 2252da8bc8a5f7705ac131184cd247f48500da0d74eAndrew Trick void computeIssueWidth(); 2262da8bc8a5f7705ac131184cd247f48500da0d74eAndrew Trick 22739dfb0ff848be6b380ca81ff95d4ca4e0ae09c76Evan Cheng bool hasV4TOps() const { return HasV4TOps; } 22839dfb0ff848be6b380ca81ff95d4ca4e0ae09c76Evan Cheng bool hasV5TOps() const { return HasV5TOps; } 22939dfb0ff848be6b380ca81ff95d4ca4e0ae09c76Evan Cheng bool hasV5TEOps() const { return HasV5TEOps; } 23039dfb0ff848be6b380ca81ff95d4ca4e0ae09c76Evan Cheng bool hasV6Ops() const { return HasV6Ops; } 23139dfb0ff848be6b380ca81ff95d4ca4e0ae09c76Evan Cheng bool hasV6T2Ops() const { return HasV6T2Ops; } 23239dfb0ff848be6b380ca81ff95d4ca4e0ae09c76Evan Cheng bool hasV7Ops() const { return HasV7Ops; } 233849eedce9921eb8f285cd0df0ad69ee5133459d1Joey Gouly bool hasV8Ops() const { return HasV8Ops; } 234a8e2989ece6dc46df59b0768184028257f913843Evan Cheng 2358facb9ecf21fc97409121842882dbc1dfd87b944Quentin Colombet bool isCortexA5() const { return ARMProcFamily == CortexA5; } 2363ef1c8759a20167457eb7fd82ebcaffe7ccaa1d1Evan Cheng bool isCortexA8() const { return ARMProcFamily == CortexA8; } 2373ef1c8759a20167457eb7fd82ebcaffe7ccaa1d1Evan Cheng bool isCortexA9() const { return ARMProcFamily == CortexA9; } 238616471d4bfe4717fa86259ff4534703357b3b723Silviu Baranga bool isCortexA15() const { return ARMProcFamily == CortexA15; } 239eb1641d54a7eda7717304bc4d55d059208d8ebedBob Wilson bool isSwift() const { return ARMProcFamily == Swift; } 24044ee4714a8c245d4fdfd03840efcf58c3f66c6bcEvan Cheng bool isCortexM3() const { return CPUString == "cortex-m3"; } 241616471d4bfe4717fa86259ff4534703357b3b723Silviu Baranga bool isLikeA9() const { return isCortexA9() || isCortexA15(); } 242e0f1d712f656d3f958b616013f1d6008c5678949Quentin Colombet bool isCortexR5() const { return ARMProcFamily == CortexR5; } 2433ef1c8759a20167457eb7fd82ebcaffe7ccaa1d1Evan Cheng 2447b4d31176efe6894bcfaa05257dd5783acda5ddcEvan Cheng bool hasARMOps() const { return !NoARM; } 2457b4d31176efe6894bcfaa05257dd5783acda5ddcEvan Cheng 24639dfb0ff848be6b380ca81ff95d4ca4e0ae09c76Evan Cheng bool hasVFP2() const { return HasVFPv2; } 24739dfb0ff848be6b380ca81ff95d4ca4e0ae09c76Evan Cheng bool hasVFP3() const { return HasVFPv3; } 2484b4e62219be91839091f9e35d8accf877f925d81Anton Korobeynikov bool hasVFP4() const { return HasVFPv4; } 24931d2f08f8893f38d2d7293195f3707edfefbeeb6Joey Gouly bool hasV8FP() const { return HasV8FP; } 25039dfb0ff848be6b380ca81ff95d4ca4e0ae09c76Evan Cheng bool hasNEON() const { return HasNEON; } 251764ab52dd80310a205c9888bf166d09dab858f90Jim Grosbach bool useNEONForSinglePrecisionFP() const { 25242a83f2d15cbbc08f5be19856198e3c885221e9cDavid Goodwin return hasNEON() && UseNEONForSinglePrecisionFP; } 25339dfb0ff848be6b380ca81ff95d4ca4e0ae09c76Evan Cheng 254eae216c6d3d29cb9024ddf436a8f2ce222bb9ec8Shantonu Sen bool hasDivide() const { return HasHardwareDivide; } 255eb1641d54a7eda7717304bc4d55d059208d8ebedBob Wilson bool hasDivideInARMMode() const { return HasHardwareDivideInARM; } 256eae216c6d3d29cb9024ddf436a8f2ce222bb9ec8Shantonu Sen bool hasT2ExtractPack() const { return HasT2ExtractPack; } 25711db068721d44fd5f9b0c2a3a4c90f813d2eae9cEvan Cheng bool hasDataBarrier() const { return HasDataBarrier; } 258eb1641d54a7eda7717304bc4d55d059208d8ebedBob Wilson bool useMulOps() const { return UseMulOps; } 25948575f6ea7d5cd21ab29ca370f58fcf9ca31400bEvan Cheng bool useFPVMLx() const { return !SlowFPVMLx; } 260463d358f1dfdd28a6900f2f109a160be71d2a8efEvan Cheng bool hasVMLxForwarding() const { return HasVMLxForwarding; } 2617a415999625f9791a8a7eea2027e628e29de15c0Evan Cheng bool isFPBrccSlow() const { return SlowFPBrcc; } 262fcba5e6b645df89ae6b93911fe0f80b08fa6b44cJim Grosbach bool isFPOnlySP() const { return FPOnlySP; } 263b94a353242b26af5c0969926a6b84664e342b586Tim Northover bool hasPerfMon() const { return HasPerfMon; } 2648c9e52a9fc1f99cf80c499ef10e6c8a54ef899d4Tim Northover bool hasTrustZone() const { return HasTrustZone; } 265e44be6381609d31b2d8879dbd5107e01404fa475Evan Cheng bool prefers32BitThumb() const { return Pref32BitThumb; } 2665dde893c2bac9e1569c38429f756c1d723e8edf2Bob Wilson bool avoidCPSRPartialUpdate() const { return AvoidCPSRPartialUpdate; } 267139e407d526193017d42473c8d4892933de78f14Evan Cheng bool avoidMOVsShifterOperand() const { return AvoidMOVsShifterOperand; } 2684bfcd4acbc7d12aa55f8de9af84a38422f0f6d83Evan Cheng bool hasRAS() const { return HasRAS; } 269dfed19fe2c34c1209108afa58e8ab014ffd894e2Evan Cheng bool hasMPExtension() const { return HasMPExtension; } 270a7603982dbf9e240ecc7ed6eddcd1cdb868107acJim Grosbach bool hasThumb2DSP() const { return Thumb2DSP; } 2710f156af8312a0f3ce88e5c006bf2a52691039cebEli Bendersky bool useNaClTrap() const { return UseNaClTrap; } 272764ab52dd80310a205c9888bf166d09dab858f90Jim Grosbach 273631379e79c0971c5bac13629b8caf8912ed4c35cAnton Korobeynikov bool hasFP16() const { return HasFP16; } 27477f42b52781b6923924a93b8ab338d183887a592Bob Wilson bool hasD16() const { return HasD16; } 275631379e79c0971c5bac13629b8caf8912ed4c35cAnton Korobeynikov 276c8578948c9b35080dedd6527abf4f48fc4de43d3Evan Cheng const Triple &getTargetTriple() const { return TargetTriple; } 277c8578948c9b35080dedd6527abf4f48fc4de43d3Evan Cheng 278afff941211526a31f931aa9fcac84ae42ff60ef0Evan Cheng bool isTargetIOS() const { return TargetTriple.getOS() == Triple::IOS; } 279912225e18559a73228099330a4c253fdccf9fa3dDaniel Dunbar bool isTargetDarwin() const { return TargetTriple.isOSDarwin(); } 280bab06ba696694e7f62f964af7ee5290a13f78340JF Bastien bool isTargetNaCl() const { return TargetTriple.getOS() == Triple::NaCl; } 281bab06ba696694e7f62f964af7ee5290a13f78340JF Bastien bool isTargetLinux() const { return TargetTriple.getOS() == Triple::Linux; } 282b72d2a92b75daa9cbac7338aff0cd8ae04c2b4bdEvan Cheng bool isTargetELF() const { return !isTargetDarwin(); } 283103ba845f09252d90a05109af7174f54bf412dafRenato Golin // ARM EABI is the bare-metal EABI described in ARM ABI documents and 284103ba845f09252d90a05109af7174f54bf412dafRenato Golin // can be accessed via -target arm-none-eabi. This is NOT GNUEABI. 285103ba845f09252d90a05109af7174f54bf412dafRenato Golin // FIXME: Add a flag for bare-metal for that target and set Triple::EABI 286103ba845f09252d90a05109af7174f54bf412dafRenato Golin // even for GNUEABI, so we can make a distinction here and still conform to 287103ba845f09252d90a05109af7174f54bf412dafRenato Golin // the EABI on GNU (and Android) mode. This requires change in Clang, too. 288103ba845f09252d90a05109af7174f54bf412dafRenato Golin bool isTargetAEABI() const { 289103ba845f09252d90a05109af7174f54bf412dafRenato Golin return TargetTriple.getEnvironment() == Triple::EABI; 290103ba845f09252d90a05109af7174f54bf412dafRenato Golin } 2911a3771e30e48b9cc21ccdc79fc9cf37ec4104b17Evan Cheng 2923630e78db9268dbe81a9369a33e49b857804f2ecLauro Ramos Venancio bool isAPCS_ABI() const { return TargetABI == ARM_ABI_APCS; } 2933630e78db9268dbe81a9369a33e49b857804f2ecLauro Ramos Venancio bool isAAPCS_ABI() const { return TargetABI == ARM_ABI_AAPCS; } 2943630e78db9268dbe81a9369a33e49b857804f2ecLauro Ramos Venancio 295963b03c1a9f6a9742671459f103ee9a566c6de58Evan Cheng bool isThumb() const { return InThumbMode; } 296963b03c1a9f6a9742671459f103ee9a566c6de58Evan Cheng bool isThumb1Only() const { return InThumbMode && !HasThumb2; } 297963b03c1a9f6a9742671459f103ee9a566c6de58Evan Cheng bool isThumb2() const { return InThumbMode && HasThumb2; } 29894ca42ff0407d71bacc41de4032d8dbe6358d33dEvan Cheng bool hasThumb2() const { return HasThumb2; } 299acad68da50581de905a994ed3c6b9c197bcea687James Molloy bool isMClass() const { return IsMClass; } 300acad68da50581de905a994ed3c6b9c197bcea687James Molloy bool isARClass() const { return !IsMClass; } 301a8e2989ece6dc46df59b0768184028257f913843Evan Cheng 302a8e2989ece6dc46df59b0768184028257f913843Evan Cheng bool isR9Reserved() const { return IsR9Reserved; } 303a8e2989ece6dc46df59b0768184028257f913843Evan Cheng 3045cdc3a949af0cef7f2163f8a7acbf3049c226321Anton Korobeynikov bool useMovt() const { return UseMovt && hasV6T2Ops(); } 3056d2f9cec715c50bca44816d9bdea97f8b63bf2a0Bob Wilson bool supportsTailCall() const { return SupportsTailCall; } 3065cdc3a949af0cef7f2163f8a7acbf3049c226321Anton Korobeynikov 30702aba73a9ec04d0de9424422249af3948ca9573aBob Wilson bool allowsUnalignedMem() const { return AllowsUnalignedMem; } 30802aba73a9ec04d0de9424422249af3948ca9573aBob Wilson 30941a024385f1220eadc48b48cb4c044a5fbc1b361Anton Korobeynikov const std::string & getCPUString() const { return CPUString; } 3105cdc3a949af0cef7f2163f8a7acbf3049c226321Anton Korobeynikov 311654d5440a477b1f6c89b051107e041a331f78e27Owen Anderson unsigned getMispredictionPenalty() const; 3126e8f4c404825b79f9b9176483653f1aa927dfbdeAndrew Trick 313c2e8a7e8d2ab156afaa8ab0d0317dd9ee3db7d30David Goodwin /// enablePostRAScheduler - True at 'More' optimization. 3144c3715c2e5e17d7216a96ac2baf9720630f04408David Goodwin bool enablePostRAScheduler(CodeGenOpt::Level OptLevel, 3155b1b4489cf3a0f56f8be0673fc5cc380a32d277bEvan Cheng TargetSubtargetInfo::AntiDepBreakMode& Mode, 31687d21b92fc42f6b3bd8567a83fc5b5191c1205e5David Goodwin RegClassVector& CriticalPathRCs) const; 31741a024385f1220eadc48b48cb4c044a5fbc1b361Anton Korobeynikov 318764ab52dd80310a205c9888bf166d09dab858f90Jim Grosbach /// getInstrItins - Return the instruction itineraies based on subtarget 3198557c2bcb8002169d890eb8485e9a1d7219e4343Evan Cheng /// selection. 3208557c2bcb8002169d890eb8485e9a1d7219e4343Evan Cheng const InstrItineraryData &getInstrItineraryData() const { return InstrItins; } 3218557c2bcb8002169d890eb8485e9a1d7219e4343Evan Cheng 322a8e2989ece6dc46df59b0768184028257f913843Evan Cheng /// getStackAlignment - Returns the minimum alignment known to hold of the 323a8e2989ece6dc46df59b0768184028257f913843Evan Cheng /// stack frame on entry to the function and which must be maintained by every 324a8e2989ece6dc46df59b0768184028257f913843Evan Cheng /// function for this subtarget. 325a8e2989ece6dc46df59b0768184028257f913843Evan Cheng unsigned getStackAlignment() const { return stackAlignment; } 326e4e4ed3b56f63e9343e01bf0b2ecd7c1f45d296cEvan Cheng 327e4e4ed3b56f63e9343e01bf0b2ecd7c1f45d296cEvan Cheng /// GVIsIndirectSymbol - true if the GV will be accessed via an indirect 328e4e4ed3b56f63e9343e01bf0b2ecd7c1f45d296cEvan Cheng /// symbol. 32946510a73e977273ec67747eb34cbdb43f815e451Dan Gohman bool GVIsIndirectSymbol(const GlobalValue *GV, Reloc::Model RelocM) const; 330a8e2989ece6dc46df59b0768184028257f913843Evan Cheng}; 331a8e2989ece6dc46df59b0768184028257f913843Evan Cheng} // End llvm namespace 332a8e2989ece6dc46df59b0768184028257f913843Evan Cheng 333a8e2989ece6dc46df59b0768184028257f913843Evan Cheng#endif // ARMSUBTARGET_H 334