ARMSubtarget.h revision 02aba73a9ec04d0de9424422249af3948ca9573a
1a8e2989ece6dc46df59b0768184028257f913843Evan Cheng//=====---- 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// 10a8e2989ece6dc46df59b0768184028257f913843Evan Cheng// This file declares the ARM specific subclass of TargetSubtarget. 11a8e2989ece6dc46df59b0768184028257f913843Evan Cheng// 12a8e2989ece6dc46df59b0768184028257f913843Evan Cheng//===----------------------------------------------------------------------===// 13a8e2989ece6dc46df59b0768184028257f913843Evan Cheng 14a8e2989ece6dc46df59b0768184028257f913843Evan Cheng#ifndef ARMSUBTARGET_H 15a8e2989ece6dc46df59b0768184028257f913843Evan Cheng#define ARMSUBTARGET_H 16a8e2989ece6dc46df59b0768184028257f913843Evan Cheng 178557c2bcb8002169d890eb8485e9a1d7219e4343Evan Cheng#include "llvm/Target/TargetInstrItineraries.h" 1863476a80404125e5196b6c09113c1d4796da0604Evan Cheng#include "llvm/Target/TargetMachine.h" 19a8e2989ece6dc46df59b0768184028257f913843Evan Cheng#include "llvm/Target/TargetSubtarget.h" 200855dee564f80160abf95497475306af38ab7f84David Goodwin#include "ARMBaseRegisterInfo.h" 21a8e2989ece6dc46df59b0768184028257f913843Evan Cheng#include <string> 22a8e2989ece6dc46df59b0768184028257f913843Evan Cheng 23a8e2989ece6dc46df59b0768184028257f913843Evan Chengnamespace llvm { 24e4e4ed3b56f63e9343e01bf0b2ecd7c1f45d296cEvan Chengclass GlobalValue; 25a8e2989ece6dc46df59b0768184028257f913843Evan Cheng 26a8e2989ece6dc46df59b0768184028257f913843Evan Chengclass ARMSubtarget : public TargetSubtarget { 27a8e2989ece6dc46df59b0768184028257f913843Evan Chengprotected: 28a8e2989ece6dc46df59b0768184028257f913843Evan Cheng enum ARMArchEnum { 29d6b463225674c10511b00f8f631a89b6da5afc54Evan Cheng V4, V4T, V5T, V5TE, V6, V6M, V6T2, V7A, V7M 30a8e2989ece6dc46df59b0768184028257f913843Evan Cheng }; 31a8e2989ece6dc46df59b0768184028257f913843Evan Cheng 323ef1c8759a20167457eb7fd82ebcaffe7ccaa1d1Evan Cheng enum ARMProcFamilyEnum { 333ef1c8759a20167457eb7fd82ebcaffe7ccaa1d1Evan Cheng Others, CortexA8, CortexA9 343ef1c8759a20167457eb7fd82ebcaffe7ccaa1d1Evan Cheng }; 353ef1c8759a20167457eb7fd82ebcaffe7ccaa1d1Evan Cheng 366d7d2aa38a247426e2ccf53e3c6ad0315c9a4d8cAnton Korobeynikov enum ARMFPEnum { 376d7d2aa38a247426e2ccf53e3c6ad0315c9a4d8cAnton Korobeynikov None, VFPv2, VFPv3, NEON 386d7d2aa38a247426e2ccf53e3c6ad0315c9a4d8cAnton Korobeynikov }; 396d7d2aa38a247426e2ccf53e3c6ad0315c9a4d8cAnton Korobeynikov 40d4022c3fbb0705abdc8eddc3ee4a5059f5ef8094Anton Korobeynikov enum ThumbTypeEnum { 41d4022c3fbb0705abdc8eddc3ee4a5059f5ef8094Anton Korobeynikov Thumb1, 42d4022c3fbb0705abdc8eddc3ee4a5059f5ef8094Anton Korobeynikov Thumb2 43d4022c3fbb0705abdc8eddc3ee4a5059f5ef8094Anton Korobeynikov }; 44d4022c3fbb0705abdc8eddc3ee4a5059f5ef8094Anton Korobeynikov 45ce7bf1c55f5238870bae2909cd368151f1d813d1Anton Korobeynikov /// ARMArchVersion - ARM architecture version: V4, V4T (base), V5T, V5TE, 46b1dc393bd56365ad8fabb51f22c2f3ace707c39aJim Grosbach /// V6, V6T2, V7A, V7M. 47a8e2989ece6dc46df59b0768184028257f913843Evan Cheng ARMArchEnum ARMArchVersion; 48a8e2989ece6dc46df59b0768184028257f913843Evan Cheng 493ef1c8759a20167457eb7fd82ebcaffe7ccaa1d1Evan Cheng /// ARMProcFamily - ARM processor family: Cortex-A8, Cortex-A9, and others. 503ef1c8759a20167457eb7fd82ebcaffe7ccaa1d1Evan Cheng ARMProcFamilyEnum ARMProcFamily; 513ef1c8759a20167457eb7fd82ebcaffe7ccaa1d1Evan Cheng 526d7d2aa38a247426e2ccf53e3c6ad0315c9a4d8cAnton Korobeynikov /// ARMFPUType - Floating Point Unit type. 536d7d2aa38a247426e2ccf53e3c6ad0315c9a4d8cAnton Korobeynikov ARMFPEnum ARMFPUType; 54a8e2989ece6dc46df59b0768184028257f913843Evan Cheng 551f0e404c87675ce75e34bcd91395c660fe1d4ac1David Goodwin /// UseNEONForSinglePrecisionFP - if the NEONFP attribute has been 561f0e404c87675ce75e34bcd91395c660fe1d4ac1David Goodwin /// specified. Use the method useNEONForSinglePrecisionFP() to 571f0e404c87675ce75e34bcd91395c660fe1d4ac1David Goodwin /// determine if NEON should actually be used. 5842a83f2d15cbbc08f5be19856198e3c885221e9cDavid Goodwin bool UseNEONForSinglePrecisionFP; 5942a83f2d15cbbc08f5be19856198e3c885221e9cDavid Goodwin 606b2e8dc9a0e4ebda645ee4eba95711eb630b4edfJim Grosbach /// SlowVMLx - If the VFP2 instructions are available, indicates whether 616b2e8dc9a0e4ebda645ee4eba95711eb630b4edfJim Grosbach /// the VML[AS] instructions are slow (if so, don't use them). 626b2e8dc9a0e4ebda645ee4eba95711eb630b4edfJim Grosbach bool SlowVMLx; 632676737e5ed3e4b5c89b4d06b60d998e9318eb73Jim Grosbach 647a415999625f9791a8a7eea2027e628e29de15c0Evan Cheng /// SlowFPBrcc - True if floating point compare + branch is slow. 657a415999625f9791a8a7eea2027e628e29de15c0Evan Cheng bool SlowFPBrcc; 667a415999625f9791a8a7eea2027e628e29de15c0Evan Cheng 6770459bef9ccd73b3a2a44fdd62f2509861112745Anton Korobeynikov /// IsThumb - True if we are in thumb mode, false if in ARM mode. 6870459bef9ccd73b3a2a44fdd62f2509861112745Anton Korobeynikov bool IsThumb; 6970459bef9ccd73b3a2a44fdd62f2509861112745Anton Korobeynikov 7070459bef9ccd73b3a2a44fdd62f2509861112745Anton Korobeynikov /// ThumbMode - Indicates supported Thumb version. 71d4022c3fbb0705abdc8eddc3ee4a5059f5ef8094Anton Korobeynikov ThumbTypeEnum ThumbMode; 72a8e2989ece6dc46df59b0768184028257f913843Evan Cheng 737b4d31176efe6894bcfaa05257dd5783acda5ddcEvan Cheng /// NoARM - True if subtarget does not support ARM mode execution. 747b4d31176efe6894bcfaa05257dd5783acda5ddcEvan Cheng bool NoARM; 757b4d31176efe6894bcfaa05257dd5783acda5ddcEvan Cheng 760dad89fa94536284d51f60868326294b725a0c61David Goodwin /// PostRAScheduler - True if using post-register-allocation scheduler. 770dad89fa94536284d51f60868326294b725a0c61David Goodwin bool PostRAScheduler; 780dad89fa94536284d51f60868326294b725a0c61David Goodwin 79a8e2989ece6dc46df59b0768184028257f913843Evan Cheng /// IsR9Reserved - True if R9 is a not available as general purpose register. 80a8e2989ece6dc46df59b0768184028257f913843Evan Cheng bool IsR9Reserved; 813630e78db9268dbe81a9369a33e49b857804f2ecLauro Ramos Venancio 825cdc3a949af0cef7f2163f8a7acbf3049c226321Anton Korobeynikov /// UseMovt - True if MOVT / MOVW pairs are used for materialization of 32-bit 835cdc3a949af0cef7f2163f8a7acbf3049c226321Anton Korobeynikov /// imms (including global addresses). 845cdc3a949af0cef7f2163f8a7acbf3049c226321Anton Korobeynikov bool UseMovt; 855cdc3a949af0cef7f2163f8a7acbf3049c226321Anton Korobeynikov 86631379e79c0971c5bac13629b8caf8912ed4c35cAnton Korobeynikov /// HasFP16 - True if subtarget supports half-precision FP (We support VFP+HF 87631379e79c0971c5bac13629b8caf8912ed4c35cAnton Korobeynikov /// only so far) 88631379e79c0971c5bac13629b8caf8912ed4c35cAnton Korobeynikov bool HasFP16; 89631379e79c0971c5bac13629b8caf8912ed4c35cAnton Korobeynikov 9029402132f3e890a2771818f44987ede213297431Jim Grosbach /// HasHardwareDivide - True if subtarget supports [su]div 9129402132f3e890a2771818f44987ede213297431Jim Grosbach bool HasHardwareDivide; 9229402132f3e890a2771818f44987ede213297431Jim Grosbach 9329402132f3e890a2771818f44987ede213297431Jim Grosbach /// HasT2ExtractPack - True if subtarget supports thumb2 extract/pack 9429402132f3e890a2771818f44987ede213297431Jim Grosbach /// instructions. 9529402132f3e890a2771818f44987ede213297431Jim Grosbach bool HasT2ExtractPack; 9629402132f3e890a2771818f44987ede213297431Jim Grosbach 9711db068721d44fd5f9b0c2a3a4c90f813d2eae9cEvan Cheng /// HasDataBarrier - True if the subtarget supports DMB / DSB data barrier 9811db068721d44fd5f9b0c2a3a4c90f813d2eae9cEvan Cheng /// instructions. 9911db068721d44fd5f9b0c2a3a4c90f813d2eae9cEvan Cheng bool HasDataBarrier; 10011db068721d44fd5f9b0c2a3a4c90f813d2eae9cEvan Cheng 101e44be6381609d31b2d8879dbd5107e01404fa475Evan Cheng /// Pref32BitThumb - If true, codegen would prefer 32-bit Thumb instructions 102e44be6381609d31b2d8879dbd5107e01404fa475Evan Cheng /// over 16-bit ones. 103e44be6381609d31b2d8879dbd5107e01404fa475Evan Cheng bool Pref32BitThumb; 104e44be6381609d31b2d8879dbd5107e01404fa475Evan Cheng 105fcba5e6b645df89ae6b93911fe0f80b08fa6b44cJim Grosbach /// FPOnlySP - If true, the floating point unit only supports single 106fcba5e6b645df89ae6b93911fe0f80b08fa6b44cJim Grosbach /// precision. 107fcba5e6b645df89ae6b93911fe0f80b08fa6b44cJim Grosbach bool FPOnlySP; 108fcba5e6b645df89ae6b93911fe0f80b08fa6b44cJim Grosbach 10902aba73a9ec04d0de9424422249af3948ca9573aBob Wilson /// AllowsUnalignedMem - If true, the subtarget allows unaligned memory 11002aba73a9ec04d0de9424422249af3948ca9573aBob Wilson /// accesses for some types. For details, see 11102aba73a9ec04d0de9424422249af3948ca9573aBob Wilson /// ARMTargetLowering::allowsUnalignedMemoryAccesses(). 11202aba73a9ec04d0de9424422249af3948ca9573aBob Wilson bool AllowsUnalignedMem; 11302aba73a9ec04d0de9424422249af3948ca9573aBob Wilson 114a8e2989ece6dc46df59b0768184028257f913843Evan Cheng /// stackAlignment - The minimum alignment known to hold of the stack frame on 115a8e2989ece6dc46df59b0768184028257f913843Evan Cheng /// entry to the function and which must be maintained by every function. 116a8e2989ece6dc46df59b0768184028257f913843Evan Cheng unsigned stackAlignment; 117a8e2989ece6dc46df59b0768184028257f913843Evan Cheng 11841a024385f1220eadc48b48cb4c044a5fbc1b361Anton Korobeynikov /// CPUString - String name of used CPU. 11941a024385f1220eadc48b48cb4c044a5fbc1b361Anton Korobeynikov std::string CPUString; 12041a024385f1220eadc48b48cb4c044a5fbc1b361Anton Korobeynikov 1218557c2bcb8002169d890eb8485e9a1d7219e4343Evan Cheng /// Selected instruction itineraries (one entry per itinerary class.) 1228557c2bcb8002169d890eb8485e9a1d7219e4343Evan Cheng InstrItineraryData InstrItins; 123764ab52dd80310a205c9888bf166d09dab858f90Jim Grosbach 124a8e2989ece6dc46df59b0768184028257f913843Evan Cheng public: 1251a3771e30e48b9cc21ccdc79fc9cf37ec4104b17Evan Cheng enum { 1261a3771e30e48b9cc21ccdc79fc9cf37ec4104b17Evan Cheng isELF, isDarwin 1271a3771e30e48b9cc21ccdc79fc9cf37ec4104b17Evan Cheng } TargetType; 1281a3771e30e48b9cc21ccdc79fc9cf37ec4104b17Evan Cheng 1293630e78db9268dbe81a9369a33e49b857804f2ecLauro Ramos Venancio enum { 1303630e78db9268dbe81a9369a33e49b857804f2ecLauro Ramos Venancio ARM_ABI_APCS, 1313630e78db9268dbe81a9369a33e49b857804f2ecLauro Ramos Venancio ARM_ABI_AAPCS // ARM EABI 1323630e78db9268dbe81a9369a33e49b857804f2ecLauro Ramos Venancio } TargetABI; 1333630e78db9268dbe81a9369a33e49b857804f2ecLauro Ramos Venancio 134a8e2989ece6dc46df59b0768184028257f913843Evan Cheng /// This constructor initializes the data members to match that 1353be03406c9c3b2075d5ae416499af2f15f703d6fDaniel Dunbar /// of the specified triple. 136a8e2989ece6dc46df59b0768184028257f913843Evan Cheng /// 1373be03406c9c3b2075d5ae416499af2f15f703d6fDaniel Dunbar ARMSubtarget(const std::string &TT, const std::string &FS, bool isThumb); 138a8e2989ece6dc46df59b0768184028257f913843Evan Cheng 139707e0184233f27e0e9f9aee0309f2daab8cfe7f8Dan Gohman /// getMaxInlineSizeThreshold - Returns the maximum memset / memcpy size 140707e0184233f27e0e9f9aee0309f2daab8cfe7f8Dan Gohman /// that still makes it profitable to inline the call. 141e0703c84ddeb1a1276de4e38210c1127ef5df130Rafael Espindola unsigned getMaxInlineSizeThreshold() const { 1424d6113ee0699ac1eff46971881179de53e2eb810Bob Wilson // FIXME: For now, we don't lower memcpy's to loads / stores for Thumb1. 1434d6113ee0699ac1eff46971881179de53e2eb810Bob Wilson // Change this once Thumb1 ldmia / stmia support is added. 1444d6113ee0699ac1eff46971881179de53e2eb810Bob Wilson return isThumb1Only() ? 0 : 64; 145e0703c84ddeb1a1276de4e38210c1127ef5df130Rafael Espindola } 1466d7d2aa38a247426e2ccf53e3c6ad0315c9a4d8cAnton Korobeynikov /// ParseSubtargetFeatures - Parses features string setting specified 147a8e2989ece6dc46df59b0768184028257f913843Evan Cheng /// subtarget options. Definition of function is auto generated by tblgen. 14841a024385f1220eadc48b48cb4c044a5fbc1b361Anton Korobeynikov std::string ParseSubtargetFeatures(const std::string &FS, 14941a024385f1220eadc48b48cb4c044a5fbc1b361Anton Korobeynikov const std::string &CPU); 150a8e2989ece6dc46df59b0768184028257f913843Evan Cheng 1516d7d2aa38a247426e2ccf53e3c6ad0315c9a4d8cAnton Korobeynikov bool hasV4TOps() const { return ARMArchVersion >= V4T; } 1526d7d2aa38a247426e2ccf53e3c6ad0315c9a4d8cAnton Korobeynikov bool hasV5TOps() const { return ARMArchVersion >= V5T; } 153a8e2989ece6dc46df59b0768184028257f913843Evan Cheng bool hasV5TEOps() const { return ARMArchVersion >= V5TE; } 1546d7d2aa38a247426e2ccf53e3c6ad0315c9a4d8cAnton Korobeynikov bool hasV6Ops() const { return ARMArchVersion >= V6; } 155e481f127497b20d3abe625ca4c086f85bf8b126fBob Wilson bool hasV6T2Ops() const { return ARMArchVersion >= V6T2; } 1566d7d2aa38a247426e2ccf53e3c6ad0315c9a4d8cAnton Korobeynikov bool hasV7Ops() const { return ARMArchVersion >= V7A; } 157a8e2989ece6dc46df59b0768184028257f913843Evan Cheng 1583ef1c8759a20167457eb7fd82ebcaffe7ccaa1d1Evan Cheng bool isCortexA8() const { return ARMProcFamily == CortexA8; } 1593ef1c8759a20167457eb7fd82ebcaffe7ccaa1d1Evan Cheng bool isCortexA9() const { return ARMProcFamily == CortexA9; } 1603ef1c8759a20167457eb7fd82ebcaffe7ccaa1d1Evan Cheng 1617b4d31176efe6894bcfaa05257dd5783acda5ddcEvan Cheng bool hasARMOps() const { return !NoARM; } 1627b4d31176efe6894bcfaa05257dd5783acda5ddcEvan Cheng 1636d7d2aa38a247426e2ccf53e3c6ad0315c9a4d8cAnton Korobeynikov bool hasVFP2() const { return ARMFPUType >= VFPv2; } 1646d7d2aa38a247426e2ccf53e3c6ad0315c9a4d8cAnton Korobeynikov bool hasVFP3() const { return ARMFPUType >= VFPv3; } 1656d7d2aa38a247426e2ccf53e3c6ad0315c9a4d8cAnton Korobeynikov bool hasNEON() const { return ARMFPUType >= NEON; } 166764ab52dd80310a205c9888bf166d09dab858f90Jim Grosbach bool useNEONForSinglePrecisionFP() const { 16742a83f2d15cbbc08f5be19856198e3c885221e9cDavid Goodwin return hasNEON() && UseNEONForSinglePrecisionFP; } 168eae216c6d3d29cb9024ddf436a8f2ce222bb9ec8Shantonu Sen bool hasDivide() const { return HasHardwareDivide; } 169eae216c6d3d29cb9024ddf436a8f2ce222bb9ec8Shantonu Sen bool hasT2ExtractPack() const { return HasT2ExtractPack; } 17011db068721d44fd5f9b0c2a3a4c90f813d2eae9cEvan Cheng bool hasDataBarrier() const { return HasDataBarrier; } 1716b2e8dc9a0e4ebda645ee4eba95711eb630b4edfJim Grosbach bool useVMLx() const {return hasVFP2() && !SlowVMLx; } 1727a415999625f9791a8a7eea2027e628e29de15c0Evan Cheng bool isFPBrccSlow() const { return SlowFPBrcc; } 173fcba5e6b645df89ae6b93911fe0f80b08fa6b44cJim Grosbach bool isFPOnlySP() const { return FPOnlySP; } 174e44be6381609d31b2d8879dbd5107e01404fa475Evan Cheng bool prefers32BitThumb() const { return Pref32BitThumb; } 175764ab52dd80310a205c9888bf166d09dab858f90Jim Grosbach 176631379e79c0971c5bac13629b8caf8912ed4c35cAnton Korobeynikov bool hasFP16() const { return HasFP16; } 177631379e79c0971c5bac13629b8caf8912ed4c35cAnton Korobeynikov 1781a3771e30e48b9cc21ccdc79fc9cf37ec4104b17Evan Cheng bool isTargetDarwin() const { return TargetType == isDarwin; } 1791a3771e30e48b9cc21ccdc79fc9cf37ec4104b17Evan Cheng bool isTargetELF() const { return TargetType == isELF; } 1801a3771e30e48b9cc21ccdc79fc9cf37ec4104b17Evan Cheng 1813630e78db9268dbe81a9369a33e49b857804f2ecLauro Ramos Venancio bool isAPCS_ABI() const { return TargetABI == ARM_ABI_APCS; } 1823630e78db9268dbe81a9369a33e49b857804f2ecLauro Ramos Venancio bool isAAPCS_ABI() const { return TargetABI == ARM_ABI_AAPCS; } 1833630e78db9268dbe81a9369a33e49b857804f2ecLauro Ramos Venancio 18470459bef9ccd73b3a2a44fdd62f2509861112745Anton Korobeynikov bool isThumb() const { return IsThumb; } 185bb6296234238aab74a531b382d92342269bea902Anton Korobeynikov bool isThumb1Only() const { return IsThumb && (ThumbMode == Thumb1); } 1863147fb2cff9ca0d258f8ab20ff23b9c447024df1Evan Cheng bool isThumb2() const { return IsThumb && (ThumbMode == Thumb2); } 187d770d9e7d1f5c65b185897dcf226b3fc64598683Evan Cheng bool hasThumb2() const { return ThumbMode >= Thumb2; } 188a8e2989ece6dc46df59b0768184028257f913843Evan Cheng 189a8e2989ece6dc46df59b0768184028257f913843Evan Cheng bool isR9Reserved() const { return IsR9Reserved; } 190a8e2989ece6dc46df59b0768184028257f913843Evan Cheng 1915cdc3a949af0cef7f2163f8a7acbf3049c226321Anton Korobeynikov bool useMovt() const { return UseMovt && hasV6T2Ops(); } 1925cdc3a949af0cef7f2163f8a7acbf3049c226321Anton Korobeynikov 19302aba73a9ec04d0de9424422249af3948ca9573aBob Wilson bool allowsUnalignedMem() const { return AllowsUnalignedMem; } 19402aba73a9ec04d0de9424422249af3948ca9573aBob Wilson 19541a024385f1220eadc48b48cb4c044a5fbc1b361Anton Korobeynikov const std::string & getCPUString() const { return CPUString; } 1965cdc3a949af0cef7f2163f8a7acbf3049c226321Anton Korobeynikov 197c2e8a7e8d2ab156afaa8ab0d0317dd9ee3db7d30David Goodwin /// enablePostRAScheduler - True at 'More' optimization. 1984c3715c2e5e17d7216a96ac2baf9720630f04408David Goodwin bool enablePostRAScheduler(CodeGenOpt::Level OptLevel, 1990855dee564f80160abf95497475306af38ab7f84David Goodwin TargetSubtarget::AntiDepBreakMode& Mode, 20087d21b92fc42f6b3bd8567a83fc5b5191c1205e5David Goodwin RegClassVector& CriticalPathRCs) const; 20141a024385f1220eadc48b48cb4c044a5fbc1b361Anton Korobeynikov 202764ab52dd80310a205c9888bf166d09dab858f90Jim Grosbach /// getInstrItins - Return the instruction itineraies based on subtarget 2038557c2bcb8002169d890eb8485e9a1d7219e4343Evan Cheng /// selection. 2048557c2bcb8002169d890eb8485e9a1d7219e4343Evan Cheng const InstrItineraryData &getInstrItineraryData() const { return InstrItins; } 2058557c2bcb8002169d890eb8485e9a1d7219e4343Evan Cheng 206a8e2989ece6dc46df59b0768184028257f913843Evan Cheng /// getStackAlignment - Returns the minimum alignment known to hold of the 207a8e2989ece6dc46df59b0768184028257f913843Evan Cheng /// stack frame on entry to the function and which must be maintained by every 208a8e2989ece6dc46df59b0768184028257f913843Evan Cheng /// function for this subtarget. 209a8e2989ece6dc46df59b0768184028257f913843Evan Cheng unsigned getStackAlignment() const { return stackAlignment; } 210e4e4ed3b56f63e9343e01bf0b2ecd7c1f45d296cEvan Cheng 211e4e4ed3b56f63e9343e01bf0b2ecd7c1f45d296cEvan Cheng /// GVIsIndirectSymbol - true if the GV will be accessed via an indirect 212e4e4ed3b56f63e9343e01bf0b2ecd7c1f45d296cEvan Cheng /// symbol. 21346510a73e977273ec67747eb34cbdb43f815e451Dan Gohman bool GVIsIndirectSymbol(const GlobalValue *GV, Reloc::Model RelocM) const; 214fd9493d74e5429eab44638cd9badbad9090cd713Rafael Espindola 215fd9493d74e5429eab44638cd9badbad9090cd713Rafael Espindola /// getDataLayout() - returns the ARM/Thumb specific TargetLayout string 216fd9493d74e5429eab44638cd9badbad9090cd713Rafael Espindola std::string getDataLayout() const { 217fd9493d74e5429eab44638cd9badbad9090cd713Rafael Espindola if (isThumb()) { 218fd9493d74e5429eab44638cd9badbad9090cd713Rafael Espindola if (isAPCS_ABI()) { 219fd9493d74e5429eab44638cd9badbad9090cd713Rafael Espindola return std::string("e-p:32:32-f64:32:32-i64:32:32-" 220fd9493d74e5429eab44638cd9badbad9090cd713Rafael Espindola "i16:16:32-i8:8:32-i1:8:32-" 221fd9493d74e5429eab44638cd9badbad9090cd713Rafael Espindola "v128:32:128-v64:32:64-a:0:32-n32"); 222fd9493d74e5429eab44638cd9badbad9090cd713Rafael Espindola } else { 223fd9493d74e5429eab44638cd9badbad9090cd713Rafael Espindola return std::string("e-p:32:32-f64:64:64-i64:64:64-" 224fd9493d74e5429eab44638cd9badbad9090cd713Rafael Espindola "i16:16:32-i8:8:32-i1:8:32-" 225fd9493d74e5429eab44638cd9badbad9090cd713Rafael Espindola "v128:64:128-v64:64:64-a:0:32-n32"); 226fd9493d74e5429eab44638cd9badbad9090cd713Rafael Espindola } 227fd9493d74e5429eab44638cd9badbad9090cd713Rafael Espindola } else { 228fd9493d74e5429eab44638cd9badbad9090cd713Rafael Espindola if (isAPCS_ABI()) { 229fd9493d74e5429eab44638cd9badbad9090cd713Rafael Espindola return std::string("e-p:32:32-f64:32:32-i64:32:32-" 230fd9493d74e5429eab44638cd9badbad9090cd713Rafael Espindola "v128:32:128-v64:32:64-n32"); 231fd9493d74e5429eab44638cd9badbad9090cd713Rafael Espindola } else { 232fd9493d74e5429eab44638cd9badbad9090cd713Rafael Espindola return std::string("e-p:32:32-f64:64:64-i64:64:64-" 233fd9493d74e5429eab44638cd9badbad9090cd713Rafael Espindola "v128:64:128-v64:64:64-n32"); 234fd9493d74e5429eab44638cd9badbad9090cd713Rafael Espindola } 235fd9493d74e5429eab44638cd9badbad9090cd713Rafael Espindola } 2363b9569e70db0b5a0d1389384a07fecbea8dc7dc2Daniel Dunbar } 237a8e2989ece6dc46df59b0768184028257f913843Evan Cheng}; 238a8e2989ece6dc46df59b0768184028257f913843Evan Cheng} // End llvm namespace 239a8e2989ece6dc46df59b0768184028257f913843Evan Cheng 240a8e2989ece6dc46df59b0768184028257f913843Evan Cheng#endif // ARMSUBTARGET_H 241