15ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka//===-- Mips16ISelLowering.h - Mips16 DAG Lowering Interface ----*- C++ -*-===// 25ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka// 35ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka// The LLVM Compiler Infrastructure 45ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka// 55ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka// This file is distributed under the University of Illinois Open Source 65ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka// License. See LICENSE.TXT for details. 75ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka// 85ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka//===----------------------------------------------------------------------===// 95ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka// 105ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka// Subclass of MipsTargetLowering specialized for mips16. 115ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka// 125ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka//===----------------------------------------------------------------------===// 135ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka#include "Mips16ISelLowering.h" 1436b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines#include "MCTargetDesc/MipsBaseInfo.h" 1537ed9c199ca639565f6ce88105f9e39e898d82d0Stephen Hines#include "Mips16HardFloatInfo.h" 1637ed9c199ca639565f6ce88105f9e39e898d82d0Stephen Hines#include "MipsMachineFunction.h" 175ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka#include "MipsRegisterInfo.h" 1846090914b783b632618268f2a5c99aab83732688Reed Kotler#include "MipsTargetMachine.h" 195ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka#include "llvm/CodeGen/MachineInstrBuilder.h" 205ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka#include "llvm/Support/CommandLine.h" 215ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka#include "llvm/Target/TargetInstrInfo.h" 225ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka 235ac065a79767cc112eba63136183b7103765d0d3Akira Hatanakausing namespace llvm; 245ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka 25dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines#define DEBUG_TYPE "mips-lower" 26dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines 275ac065a79767cc112eba63136183b7103765d0d3Akira Hatanakastatic cl::opt<bool> DontExpandCondPseudos16( 285ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka "mips16-dont-expand-cond-pseudo", 295ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka cl::init(false), 3037ed9c199ca639565f6ce88105f9e39e898d82d0Stephen Hines cl::desc("Don't expand conditional move related " 315ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka "pseudos for Mips 16"), 325ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka cl::Hidden); 335ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka 345ac065a79767cc112eba63136183b7103765d0d3Akira Hatanakanamespace { 3590cd06e90be1db06bc4812ae9ec96b6638847285Benjamin Kramerstruct Mips16Libcall { 3690cd06e90be1db06bc4812ae9ec96b6638847285Benjamin Kramer RTLIB::Libcall Libcall; 3790cd06e90be1db06bc4812ae9ec96b6638847285Benjamin Kramer const char *Name; 3890cd06e90be1db06bc4812ae9ec96b6638847285Benjamin Kramer 3990cd06e90be1db06bc4812ae9ec96b6638847285Benjamin Kramer bool operator<(const Mips16Libcall &RHS) const { 4090cd06e90be1db06bc4812ae9ec96b6638847285Benjamin Kramer return std::strcmp(Name, RHS.Name) < 0; 4190cd06e90be1db06bc4812ae9ec96b6638847285Benjamin Kramer } 4290cd06e90be1db06bc4812ae9ec96b6638847285Benjamin Kramer}; 43b1fa7d4d26533bdd021c3269d14c30eb6096fb7aReed Kotler 44b1fa7d4d26533bdd021c3269d14c30eb6096fb7aReed Kotlerstruct Mips16IntrinsicHelperType{ 45b1fa7d4d26533bdd021c3269d14c30eb6096fb7aReed Kotler const char* Name; 46b1fa7d4d26533bdd021c3269d14c30eb6096fb7aReed Kotler const char* Helper; 47b1fa7d4d26533bdd021c3269d14c30eb6096fb7aReed Kotler 48b1fa7d4d26533bdd021c3269d14c30eb6096fb7aReed Kotler bool operator<(const Mips16IntrinsicHelperType &RHS) const { 49b1fa7d4d26533bdd021c3269d14c30eb6096fb7aReed Kotler return std::strcmp(Name, RHS.Name) < 0; 50b1fa7d4d26533bdd021c3269d14c30eb6096fb7aReed Kotler } 51b1fa7d4d26533bdd021c3269d14c30eb6096fb7aReed Kotler bool operator==(const Mips16IntrinsicHelperType &RHS) const { 52b1fa7d4d26533bdd021c3269d14c30eb6096fb7aReed Kotler return std::strcmp(Name, RHS.Name) == 0; 53b1fa7d4d26533bdd021c3269d14c30eb6096fb7aReed Kotler } 54b1fa7d4d26533bdd021c3269d14c30eb6096fb7aReed Kotler}; 555ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka} 565ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka 5790cd06e90be1db06bc4812ae9ec96b6638847285Benjamin Kramer// Libcalls for which no helper is generated. Sorted by name for binary search. 5890cd06e90be1db06bc4812ae9ec96b6638847285Benjamin Kramerstatic const Mips16Libcall HardFloatLibCalls[] = { 5990cd06e90be1db06bc4812ae9ec96b6638847285Benjamin Kramer { RTLIB::ADD_F64, "__mips16_adddf3" }, 6090cd06e90be1db06bc4812ae9ec96b6638847285Benjamin Kramer { RTLIB::ADD_F32, "__mips16_addsf3" }, 6190cd06e90be1db06bc4812ae9ec96b6638847285Benjamin Kramer { RTLIB::DIV_F64, "__mips16_divdf3" }, 6290cd06e90be1db06bc4812ae9ec96b6638847285Benjamin Kramer { RTLIB::DIV_F32, "__mips16_divsf3" }, 6390cd06e90be1db06bc4812ae9ec96b6638847285Benjamin Kramer { RTLIB::OEQ_F64, "__mips16_eqdf2" }, 6490cd06e90be1db06bc4812ae9ec96b6638847285Benjamin Kramer { RTLIB::OEQ_F32, "__mips16_eqsf2" }, 6590cd06e90be1db06bc4812ae9ec96b6638847285Benjamin Kramer { RTLIB::FPEXT_F32_F64, "__mips16_extendsfdf2" }, 6690cd06e90be1db06bc4812ae9ec96b6638847285Benjamin Kramer { RTLIB::FPTOSINT_F64_I32, "__mips16_fix_truncdfsi" }, 6790cd06e90be1db06bc4812ae9ec96b6638847285Benjamin Kramer { RTLIB::FPTOSINT_F32_I32, "__mips16_fix_truncsfsi" }, 6890cd06e90be1db06bc4812ae9ec96b6638847285Benjamin Kramer { RTLIB::SINTTOFP_I32_F64, "__mips16_floatsidf" }, 6990cd06e90be1db06bc4812ae9ec96b6638847285Benjamin Kramer { RTLIB::SINTTOFP_I32_F32, "__mips16_floatsisf" }, 7090cd06e90be1db06bc4812ae9ec96b6638847285Benjamin Kramer { RTLIB::UINTTOFP_I32_F64, "__mips16_floatunsidf" }, 7190cd06e90be1db06bc4812ae9ec96b6638847285Benjamin Kramer { RTLIB::UINTTOFP_I32_F32, "__mips16_floatunsisf" }, 7290cd06e90be1db06bc4812ae9ec96b6638847285Benjamin Kramer { RTLIB::OGE_F64, "__mips16_gedf2" }, 7390cd06e90be1db06bc4812ae9ec96b6638847285Benjamin Kramer { RTLIB::OGE_F32, "__mips16_gesf2" }, 7490cd06e90be1db06bc4812ae9ec96b6638847285Benjamin Kramer { RTLIB::OGT_F64, "__mips16_gtdf2" }, 7590cd06e90be1db06bc4812ae9ec96b6638847285Benjamin Kramer { RTLIB::OGT_F32, "__mips16_gtsf2" }, 7690cd06e90be1db06bc4812ae9ec96b6638847285Benjamin Kramer { RTLIB::OLE_F64, "__mips16_ledf2" }, 7790cd06e90be1db06bc4812ae9ec96b6638847285Benjamin Kramer { RTLIB::OLE_F32, "__mips16_lesf2" }, 7890cd06e90be1db06bc4812ae9ec96b6638847285Benjamin Kramer { RTLIB::OLT_F64, "__mips16_ltdf2" }, 7990cd06e90be1db06bc4812ae9ec96b6638847285Benjamin Kramer { RTLIB::OLT_F32, "__mips16_ltsf2" }, 8090cd06e90be1db06bc4812ae9ec96b6638847285Benjamin Kramer { RTLIB::MUL_F64, "__mips16_muldf3" }, 8190cd06e90be1db06bc4812ae9ec96b6638847285Benjamin Kramer { RTLIB::MUL_F32, "__mips16_mulsf3" }, 8290cd06e90be1db06bc4812ae9ec96b6638847285Benjamin Kramer { RTLIB::UNE_F64, "__mips16_nedf2" }, 8390cd06e90be1db06bc4812ae9ec96b6638847285Benjamin Kramer { RTLIB::UNE_F32, "__mips16_nesf2" }, 8490cd06e90be1db06bc4812ae9ec96b6638847285Benjamin Kramer { RTLIB::UNKNOWN_LIBCALL, "__mips16_ret_dc" }, // No associated libcall. 8590cd06e90be1db06bc4812ae9ec96b6638847285Benjamin Kramer { RTLIB::UNKNOWN_LIBCALL, "__mips16_ret_df" }, // No associated libcall. 8690cd06e90be1db06bc4812ae9ec96b6638847285Benjamin Kramer { RTLIB::UNKNOWN_LIBCALL, "__mips16_ret_sc" }, // No associated libcall. 8790cd06e90be1db06bc4812ae9ec96b6638847285Benjamin Kramer { RTLIB::UNKNOWN_LIBCALL, "__mips16_ret_sf" }, // No associated libcall. 8890cd06e90be1db06bc4812ae9ec96b6638847285Benjamin Kramer { RTLIB::SUB_F64, "__mips16_subdf3" }, 8990cd06e90be1db06bc4812ae9ec96b6638847285Benjamin Kramer { RTLIB::SUB_F32, "__mips16_subsf3" }, 9090cd06e90be1db06bc4812ae9ec96b6638847285Benjamin Kramer { RTLIB::FPROUND_F64_F32, "__mips16_truncdfsf2" }, 9190cd06e90be1db06bc4812ae9ec96b6638847285Benjamin Kramer { RTLIB::UO_F64, "__mips16_unorddf2" }, 9290cd06e90be1db06bc4812ae9ec96b6638847285Benjamin Kramer { RTLIB::UO_F32, "__mips16_unordsf2" } 9390cd06e90be1db06bc4812ae9ec96b6638847285Benjamin Kramer}; 9490cd06e90be1db06bc4812ae9ec96b6638847285Benjamin Kramer 95b1fa7d4d26533bdd021c3269d14c30eb6096fb7aReed Kotlerstatic const Mips16IntrinsicHelperType Mips16IntrinsicHelper[] = { 961e07de352947aaf2f9137113cc594d8204da2b77Reed Kotler {"__fixunsdfsi", "__mips16_call_stub_2" }, 97b1fa7d4d26533bdd021c3269d14c30eb6096fb7aReed Kotler {"ceil", "__mips16_call_stub_df_2"}, 98b1fa7d4d26533bdd021c3269d14c30eb6096fb7aReed Kotler {"ceilf", "__mips16_call_stub_sf_1"}, 99b1fa7d4d26533bdd021c3269d14c30eb6096fb7aReed Kotler {"copysign", "__mips16_call_stub_df_10"}, 100b1fa7d4d26533bdd021c3269d14c30eb6096fb7aReed Kotler {"copysignf", "__mips16_call_stub_sf_5"}, 101b1fa7d4d26533bdd021c3269d14c30eb6096fb7aReed Kotler {"cos", "__mips16_call_stub_df_2"}, 102b1fa7d4d26533bdd021c3269d14c30eb6096fb7aReed Kotler {"cosf", "__mips16_call_stub_sf_1"}, 103b1fa7d4d26533bdd021c3269d14c30eb6096fb7aReed Kotler {"exp2", "__mips16_call_stub_df_2"}, 104b1fa7d4d26533bdd021c3269d14c30eb6096fb7aReed Kotler {"exp2f", "__mips16_call_stub_sf_1"}, 105b1fa7d4d26533bdd021c3269d14c30eb6096fb7aReed Kotler {"floor", "__mips16_call_stub_df_2"}, 106b1fa7d4d26533bdd021c3269d14c30eb6096fb7aReed Kotler {"floorf", "__mips16_call_stub_sf_1"}, 107b1fa7d4d26533bdd021c3269d14c30eb6096fb7aReed Kotler {"log2", "__mips16_call_stub_df_2"}, 108b1fa7d4d26533bdd021c3269d14c30eb6096fb7aReed Kotler {"log2f", "__mips16_call_stub_sf_1"}, 109b1fa7d4d26533bdd021c3269d14c30eb6096fb7aReed Kotler {"nearbyint", "__mips16_call_stub_df_2"}, 110b1fa7d4d26533bdd021c3269d14c30eb6096fb7aReed Kotler {"nearbyintf", "__mips16_call_stub_sf_1"}, 111b1fa7d4d26533bdd021c3269d14c30eb6096fb7aReed Kotler {"rint", "__mips16_call_stub_df_2"}, 112b1fa7d4d26533bdd021c3269d14c30eb6096fb7aReed Kotler {"rintf", "__mips16_call_stub_sf_1"}, 113b1fa7d4d26533bdd021c3269d14c30eb6096fb7aReed Kotler {"sin", "__mips16_call_stub_df_2"}, 114b1fa7d4d26533bdd021c3269d14c30eb6096fb7aReed Kotler {"sinf", "__mips16_call_stub_sf_1"}, 115b1fa7d4d26533bdd021c3269d14c30eb6096fb7aReed Kotler {"sqrt", "__mips16_call_stub_df_2"}, 116b1fa7d4d26533bdd021c3269d14c30eb6096fb7aReed Kotler {"sqrtf", "__mips16_call_stub_sf_1"}, 117b1fa7d4d26533bdd021c3269d14c30eb6096fb7aReed Kotler {"trunc", "__mips16_call_stub_df_2"}, 118b1fa7d4d26533bdd021c3269d14c30eb6096fb7aReed Kotler {"truncf", "__mips16_call_stub_sf_1"}, 119b1fa7d4d26533bdd021c3269d14c30eb6096fb7aReed Kotler}; 120b1fa7d4d26533bdd021c3269d14c30eb6096fb7aReed Kotler 12137ed9c199ca639565f6ce88105f9e39e898d82d0Stephen HinesMips16TargetLowering::Mips16TargetLowering(const MipsTargetMachine &TM, 12237ed9c199ca639565f6ce88105f9e39e898d82d0Stephen Hines const MipsSubtarget &STI) 12337ed9c199ca639565f6ce88105f9e39e898d82d0Stephen Hines : MipsTargetLowering(TM, STI) { 124f8b0a08b6a2e2f4eacdb05eae9a8dd704b692b55Reed Kotler 1255ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka // Set up the register classes 1265ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka addRegisterClass(MVT::i32, &Mips::CPU16RegsRegClass); 1275ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka 1286948897e478cbd66626159776a8017b3c18579b9Pirama Arumuga Nainar if (!Subtarget.useSoftFloat()) 1295ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka setMips16HardFloatLibCalls(); 13090cd06e90be1db06bc4812ae9ec96b6638847285Benjamin Kramer 1315ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka setOperationAction(ISD::ATOMIC_FENCE, MVT::Other, Expand); 1325ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka setOperationAction(ISD::ATOMIC_CMP_SWAP, MVT::i32, Expand); 1335ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka setOperationAction(ISD::ATOMIC_SWAP, MVT::i32, Expand); 1345ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka setOperationAction(ISD::ATOMIC_LOAD_ADD, MVT::i32, Expand); 1355ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka setOperationAction(ISD::ATOMIC_LOAD_SUB, MVT::i32, Expand); 1365ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka setOperationAction(ISD::ATOMIC_LOAD_AND, MVT::i32, Expand); 1375ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka setOperationAction(ISD::ATOMIC_LOAD_OR, MVT::i32, Expand); 1385ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka setOperationAction(ISD::ATOMIC_LOAD_XOR, MVT::i32, Expand); 1395ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka setOperationAction(ISD::ATOMIC_LOAD_NAND, MVT::i32, Expand); 1405ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka setOperationAction(ISD::ATOMIC_LOAD_MIN, MVT::i32, Expand); 1415ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka setOperationAction(ISD::ATOMIC_LOAD_MAX, MVT::i32, Expand); 1425ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka setOperationAction(ISD::ATOMIC_LOAD_UMIN, MVT::i32, Expand); 1435ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka setOperationAction(ISD::ATOMIC_LOAD_UMAX, MVT::i32, Expand); 1445ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka 145b359bda93d410623bbbc96dc9968d94447169a79Reed Kotler setOperationAction(ISD::ROTR, MVT::i32, Expand); 146b359bda93d410623bbbc96dc9968d94447169a79Reed Kotler setOperationAction(ISD::ROTR, MVT::i64, Expand); 147b359bda93d410623bbbc96dc9968d94447169a79Reed Kotler setOperationAction(ISD::BSWAP, MVT::i32, Expand); 148b359bda93d410623bbbc96dc9968d94447169a79Reed Kotler setOperationAction(ISD::BSWAP, MVT::i64, Expand); 149b359bda93d410623bbbc96dc9968d94447169a79Reed Kotler 150ebe69fe11e48d322045d5949c83283927a0d790bStephen Hines computeRegisterProperties(STI.getRegisterInfo()); 1515ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka} 1525ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka 1535ac065a79767cc112eba63136183b7103765d0d3Akira Hatanakaconst MipsTargetLowering * 15437ed9c199ca639565f6ce88105f9e39e898d82d0Stephen Hinesllvm::createMips16TargetLowering(const MipsTargetMachine &TM, 15537ed9c199ca639565f6ce88105f9e39e898d82d0Stephen Hines const MipsSubtarget &STI) { 15637ed9c199ca639565f6ce88105f9e39e898d82d0Stephen Hines return new Mips16TargetLowering(TM, STI); 1575ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka} 1585ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka 1595ac065a79767cc112eba63136183b7103765d0d3Akira Hatanakabool 16037ed9c199ca639565f6ce88105f9e39e898d82d0Stephen HinesMips16TargetLowering::allowsMisalignedMemoryAccesses(EVT VT, 16137ed9c199ca639565f6ce88105f9e39e898d82d0Stephen Hines unsigned, 16237ed9c199ca639565f6ce88105f9e39e898d82d0Stephen Hines unsigned, 16337ed9c199ca639565f6ce88105f9e39e898d82d0Stephen Hines bool *Fast) const { 1645ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka return false; 1655ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka} 1665ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka 1675ac065a79767cc112eba63136183b7103765d0d3Akira HatanakaMachineBasicBlock * 168de2d8694e25a814696358e95141f4b1aa4d8847ePirama Arumuga NainarMips16TargetLowering::EmitInstrWithCustomInserter(MachineInstr &MI, 1695ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka MachineBasicBlock *BB) const { 170de2d8694e25a814696358e95141f4b1aa4d8847ePirama Arumuga Nainar switch (MI.getOpcode()) { 1715ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka default: 1725ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka return MipsTargetLowering::EmitInstrWithCustomInserter(MI, BB); 1735ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka case Mips::SelBeqZ: 1745ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka return emitSel16(Mips::BeqzRxImm16, MI, BB); 1755ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka case Mips::SelBneZ: 1765ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka return emitSel16(Mips::BnezRxImm16, MI, BB); 1775ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka case Mips::SelTBteqZCmpi: 1781703a714954f9ef0c32415423e2a1e15b152e711Reed Kotler return emitSeliT16(Mips::Bteqz16, Mips::CmpiRxImmX16, MI, BB); 1795ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka case Mips::SelTBteqZSlti: 1801703a714954f9ef0c32415423e2a1e15b152e711Reed Kotler return emitSeliT16(Mips::Bteqz16, Mips::SltiRxImmX16, MI, BB); 1815ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka case Mips::SelTBteqZSltiu: 1821703a714954f9ef0c32415423e2a1e15b152e711Reed Kotler return emitSeliT16(Mips::Bteqz16, Mips::SltiuRxImmX16, MI, BB); 1835ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka case Mips::SelTBtneZCmpi: 1841703a714954f9ef0c32415423e2a1e15b152e711Reed Kotler return emitSeliT16(Mips::Btnez16, Mips::CmpiRxImmX16, MI, BB); 1855ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka case Mips::SelTBtneZSlti: 1861703a714954f9ef0c32415423e2a1e15b152e711Reed Kotler return emitSeliT16(Mips::Btnez16, Mips::SltiRxImmX16, MI, BB); 1875ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka case Mips::SelTBtneZSltiu: 1881703a714954f9ef0c32415423e2a1e15b152e711Reed Kotler return emitSeliT16(Mips::Btnez16, Mips::SltiuRxImmX16, MI, BB); 1895ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka case Mips::SelTBteqZCmp: 1901703a714954f9ef0c32415423e2a1e15b152e711Reed Kotler return emitSelT16(Mips::Bteqz16, Mips::CmpRxRy16, MI, BB); 1915ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka case Mips::SelTBteqZSlt: 1921703a714954f9ef0c32415423e2a1e15b152e711Reed Kotler return emitSelT16(Mips::Bteqz16, Mips::SltRxRy16, MI, BB); 1935ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka case Mips::SelTBteqZSltu: 1941703a714954f9ef0c32415423e2a1e15b152e711Reed Kotler return emitSelT16(Mips::Bteqz16, Mips::SltuRxRy16, MI, BB); 1955ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka case Mips::SelTBtneZCmp: 1961703a714954f9ef0c32415423e2a1e15b152e711Reed Kotler return emitSelT16(Mips::Btnez16, Mips::CmpRxRy16, MI, BB); 1975ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka case Mips::SelTBtneZSlt: 1981703a714954f9ef0c32415423e2a1e15b152e711Reed Kotler return emitSelT16(Mips::Btnez16, Mips::SltRxRy16, MI, BB); 1995ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka case Mips::SelTBtneZSltu: 2001703a714954f9ef0c32415423e2a1e15b152e711Reed Kotler return emitSelT16(Mips::Btnez16, Mips::SltuRxRy16, MI, BB); 2015ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka case Mips::BteqzT8CmpX16: 2021703a714954f9ef0c32415423e2a1e15b152e711Reed Kotler return emitFEXT_T8I816_ins(Mips::Bteqz16, Mips::CmpRxRy16, MI, BB); 2035ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka case Mips::BteqzT8SltX16: 2041703a714954f9ef0c32415423e2a1e15b152e711Reed Kotler return emitFEXT_T8I816_ins(Mips::Bteqz16, Mips::SltRxRy16, MI, BB); 2055ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka case Mips::BteqzT8SltuX16: 2065ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka // TBD: figure out a way to get this or remove the instruction 2075ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka // altogether. 2081703a714954f9ef0c32415423e2a1e15b152e711Reed Kotler return emitFEXT_T8I816_ins(Mips::Bteqz16, Mips::SltuRxRy16, MI, BB); 2095ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka case Mips::BtnezT8CmpX16: 2101703a714954f9ef0c32415423e2a1e15b152e711Reed Kotler return emitFEXT_T8I816_ins(Mips::Btnez16, Mips::CmpRxRy16, MI, BB); 2115ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka case Mips::BtnezT8SltX16: 2121703a714954f9ef0c32415423e2a1e15b152e711Reed Kotler return emitFEXT_T8I816_ins(Mips::Btnez16, Mips::SltRxRy16, MI, BB); 2135ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka case Mips::BtnezT8SltuX16: 2145ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka // TBD: figure out a way to get this or remove the instruction 2155ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka // altogether. 2161703a714954f9ef0c32415423e2a1e15b152e711Reed Kotler return emitFEXT_T8I816_ins(Mips::Btnez16, Mips::SltuRxRy16, MI, BB); 2175ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka case Mips::BteqzT8CmpiX16: return emitFEXT_T8I8I16_ins( 2181703a714954f9ef0c32415423e2a1e15b152e711Reed Kotler Mips::Bteqz16, Mips::CmpiRxImm16, Mips::CmpiRxImmX16, false, MI, BB); 2195ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka case Mips::BteqzT8SltiX16: return emitFEXT_T8I8I16_ins( 2201703a714954f9ef0c32415423e2a1e15b152e711Reed Kotler Mips::Bteqz16, Mips::SltiRxImm16, Mips::SltiRxImmX16, true, MI, BB); 2215ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka case Mips::BteqzT8SltiuX16: return emitFEXT_T8I8I16_ins( 2221703a714954f9ef0c32415423e2a1e15b152e711Reed Kotler Mips::Bteqz16, Mips::SltiuRxImm16, Mips::SltiuRxImmX16, false, MI, BB); 2235ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka case Mips::BtnezT8CmpiX16: return emitFEXT_T8I8I16_ins( 2241703a714954f9ef0c32415423e2a1e15b152e711Reed Kotler Mips::Btnez16, Mips::CmpiRxImm16, Mips::CmpiRxImmX16, false, MI, BB); 2255ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka case Mips::BtnezT8SltiX16: return emitFEXT_T8I8I16_ins( 2261703a714954f9ef0c32415423e2a1e15b152e711Reed Kotler Mips::Btnez16, Mips::SltiRxImm16, Mips::SltiRxImmX16, true, MI, BB); 2275ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka case Mips::BtnezT8SltiuX16: return emitFEXT_T8I8I16_ins( 2281703a714954f9ef0c32415423e2a1e15b152e711Reed Kotler Mips::Btnez16, Mips::SltiuRxImm16, Mips::SltiuRxImmX16, false, MI, BB); 2295ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka break; 2305ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka case Mips::SltCCRxRy16: 2315ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka return emitFEXT_CCRX16_ins(Mips::SltRxRy16, MI, BB); 2325ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka break; 2335ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka case Mips::SltiCCRxImmX16: 2345ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka return emitFEXT_CCRXI16_ins 2355ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka (Mips::SltiRxImm16, Mips::SltiRxImmX16, MI, BB); 2365ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka case Mips::SltiuCCRxImmX16: 2375ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka return emitFEXT_CCRXI16_ins 2385ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka (Mips::SltiuRxImm16, Mips::SltiuRxImmX16, MI, BB); 2395ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka case Mips::SltuCCRxRy16: 2405ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka return emitFEXT_CCRX16_ins 2415ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka (Mips::SltuRxRy16, MI, BB); 2425ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka } 2435ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka} 2445ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka 24537ed9c199ca639565f6ce88105f9e39e898d82d0Stephen Hinesbool Mips16TargetLowering::isEligibleForTailCallOptimization( 24637ed9c199ca639565f6ce88105f9e39e898d82d0Stephen Hines const CCState &CCInfo, unsigned NextStackOffset, 24737ed9c199ca639565f6ce88105f9e39e898d82d0Stephen Hines const MipsFunctionInfo &FI) const { 2485ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka // No tail call optimization for mips16. 2495ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka return false; 2505ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka} 2515ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka 2525ac065a79767cc112eba63136183b7103765d0d3Akira Hatanakavoid Mips16TargetLowering::setMips16HardFloatLibCalls() { 25390cd06e90be1db06bc4812ae9ec96b6638847285Benjamin Kramer for (unsigned I = 0; I != array_lengthof(HardFloatLibCalls); ++I) { 25490cd06e90be1db06bc4812ae9ec96b6638847285Benjamin Kramer assert((I == 0 || HardFloatLibCalls[I - 1] < HardFloatLibCalls[I]) && 25590cd06e90be1db06bc4812ae9ec96b6638847285Benjamin Kramer "Array not sorted!"); 25690cd06e90be1db06bc4812ae9ec96b6638847285Benjamin Kramer if (HardFloatLibCalls[I].Libcall != RTLIB::UNKNOWN_LIBCALL) 25790cd06e90be1db06bc4812ae9ec96b6638847285Benjamin Kramer setLibcallName(HardFloatLibCalls[I].Libcall, HardFloatLibCalls[I].Name); 25890cd06e90be1db06bc4812ae9ec96b6638847285Benjamin Kramer } 2595ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka 26090cd06e90be1db06bc4812ae9ec96b6638847285Benjamin Kramer setLibcallName(RTLIB::O_F64, "__mips16_unorddf2"); 26190cd06e90be1db06bc4812ae9ec96b6638847285Benjamin Kramer setLibcallName(RTLIB::O_F32, "__mips16_unordsf2"); 26290cd06e90be1db06bc4812ae9ec96b6638847285Benjamin Kramer} 2635ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka 2645ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka// 2655ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka// The Mips16 hard float is a crazy quilt inherited from gcc. I have a much 2665ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka// cleaner way to do all of this but it will have to wait until the traditional 2675ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka// gcc mechanism is completed. 2685ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka// 2695ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka// For Pic, in order for Mips16 code to call Mips32 code which according the abi 2705ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka// have either arguments or returned values placed in floating point registers, 2715ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka// we use a set of helper functions. (This includes functions which return type 2725ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka// complex which on Mips are returned in a pair of floating point registers). 2735ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka// 2745ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka// This is an encoding that we inherited from gcc. 2755ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka// In Mips traditional O32, N32 ABI, floating point numbers are passed in 2765ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka// floating point argument registers 1,2 only when the first and optionally 2775ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka// the second arguments are float (sf) or double (df). 2785ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka// For Mips16 we are only concerned with the situations where floating point 2795ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka// arguments are being passed in floating point registers by the ABI, because 2805ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka// Mips16 mode code cannot execute floating point instructions to load those 2815ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka// values and hence helper functions are needed. 2825ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka// The possibilities are (), (sf), (sf, sf), (sf, df), (df), (df, sf), (df, df) 2835ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka// the helper function suffixs for these are: 2845ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka// 0, 1, 5, 9, 2, 6, 10 2855ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka// this suffix can then be calculated as follows: 2865ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka// for a given argument Arg: 2875ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka// Arg1x, Arg2x = 1 : Arg is sf 2885ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka// 2 : Arg is df 2895ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka// 0: Arg is neither sf or df 2905ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka// So this stub is the string for number Arg1x + Arg2x*4. 2915ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka// However not all numbers between 0 and 10 are possible, we check anyway and 2925ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka// assert if the impossible exists. 2935ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka// 2945ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka 2955ac065a79767cc112eba63136183b7103765d0d3Akira Hatanakaunsigned int Mips16TargetLowering::getMips16HelperFunctionStubNumber 2965ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka (ArgListTy &Args) const { 2975ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka unsigned int resultNum = 0; 2985ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka if (Args.size() >= 1) { 2995ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka Type *t = Args[0].Ty; 3005ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka if (t->isFloatTy()) { 3015ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka resultNum = 1; 3025ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka } 3035ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka else if (t->isDoubleTy()) { 3045ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka resultNum = 2; 3055ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka } 3065ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka } 3075ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka if (resultNum) { 3085ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka if (Args.size() >=2) { 3095ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka Type *t = Args[1].Ty; 3105ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka if (t->isFloatTy()) { 3115ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka resultNum += 4; 3125ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka } 3135ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka else if (t->isDoubleTy()) { 3145ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka resultNum += 8; 3155ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka } 3165ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka } 3175ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka } 3185ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka return resultNum; 3195ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka} 3205ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka 3215ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka// 32237ed9c199ca639565f6ce88105f9e39e898d82d0Stephen Hines// Prefixes are attached to stub numbers depending on the return type. 3235ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka// return type: float sf_ 3245ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka// double df_ 3255ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka// single complex sc_ 3265ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka// double complext dc_ 3275ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka// others NO PREFIX 3285ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka// 3295ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka// 3305ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka// The full name of a helper function is__mips16_call_stub + 3315ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka// return type dependent prefix + stub number 3325ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka// 33337ed9c199ca639565f6ce88105f9e39e898d82d0Stephen Hines// FIXME: This is something that probably should be in a different source file 33437ed9c199ca639565f6ce88105f9e39e898d82d0Stephen Hines// and perhaps done differently but my main purpose is to not waste runtime 3355ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka// on something that we can enumerate in the source. Another possibility is 3365ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka// to have a python script to generate these mapping tables. This will do 3375ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka// for now. There are a whole series of helper function mapping arrays, one 3385ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka// for each return type class as outlined above. There there are 11 possible 33937ed9c199ca639565f6ce88105f9e39e898d82d0Stephen Hines// entries. Ones with 0 are ones which should never be selected. 3405ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka// 3415ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka// All the arrays are similar except for ones which return neither 34237ed9c199ca639565f6ce88105f9e39e898d82d0Stephen Hines// sf, df, sc, dc, in which we only care about ones which have sf or df as a 3435ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka// first parameter. 3445ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka// 3455ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka#define P_ "__mips16_call_stub_" 3465ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka#define MAX_STUB_NUMBER 10 3475ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka#define T1 P "1", P "2", 0, 0, P "5", P "6", 0, 0, P "9", P "10" 3485ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka#define T P "0" , T1 3495ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka#define P P_ 3505ac065a79767cc112eba63136183b7103765d0d3Akira Hatanakastatic char const * vMips16Helper[MAX_STUB_NUMBER+1] = 351dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines {nullptr, T1 }; 3525ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka#undef P 3535ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka#define P P_ "sf_" 3545ac065a79767cc112eba63136183b7103765d0d3Akira Hatanakastatic char const * sfMips16Helper[MAX_STUB_NUMBER+1] = 3555ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka { T }; 3565ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka#undef P 3575ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka#define P P_ "df_" 3585ac065a79767cc112eba63136183b7103765d0d3Akira Hatanakastatic char const * dfMips16Helper[MAX_STUB_NUMBER+1] = 3595ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka { T }; 3605ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka#undef P 3615ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka#define P P_ "sc_" 3625ac065a79767cc112eba63136183b7103765d0d3Akira Hatanakastatic char const * scMips16Helper[MAX_STUB_NUMBER+1] = 3635ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka { T }; 3645ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka#undef P 3655ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka#define P P_ "dc_" 3665ac065a79767cc112eba63136183b7103765d0d3Akira Hatanakastatic char const * dcMips16Helper[MAX_STUB_NUMBER+1] = 3675ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka { T }; 3685ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka#undef P 3695ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka#undef P_ 3705ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka 3715ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka 3725ac065a79767cc112eba63136183b7103765d0d3Akira Hatanakaconst char* Mips16TargetLowering:: 3735ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka getMips16HelperFunction 3745ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka (Type* RetTy, ArgListTy &Args, bool &needHelper) const { 3755ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka const unsigned int stubNum = getMips16HelperFunctionStubNumber(Args); 3765ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka#ifndef NDEBUG 3775ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka const unsigned int maxStubNum = 10; 3785ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka assert(stubNum <= maxStubNum); 3795ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka const bool validStubNum[maxStubNum+1] = 3805ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka {true, true, true, false, false, true, true, false, false, true, true}; 3815ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka assert(validStubNum[stubNum]); 3825ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka#endif 3835ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka const char *result; 3845ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka if (RetTy->isFloatTy()) { 3855ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka result = sfMips16Helper[stubNum]; 3865ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka } 3875ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka else if (RetTy ->isDoubleTy()) { 3885ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka result = dfMips16Helper[stubNum]; 3895ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka } 3905ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka else if (RetTy->isStructTy()) { 3915ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka // check if it's complex 3925ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka if (RetTy->getNumContainedTypes() == 2) { 3935ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka if ((RetTy->getContainedType(0)->isFloatTy()) && 3945ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka (RetTy->getContainedType(1)->isFloatTy())) { 3955ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka result = scMips16Helper[stubNum]; 3965ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka } 3975ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka else if ((RetTy->getContainedType(0)->isDoubleTy()) && 3985ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka (RetTy->getContainedType(1)->isDoubleTy())) { 3995ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka result = dcMips16Helper[stubNum]; 4005ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka } 4015ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka else { 4025ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka llvm_unreachable("Uncovered condition"); 4035ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka } 4045ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka } 4055ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka else { 4065ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka llvm_unreachable("Uncovered condition"); 4075ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka } 4085ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka } 4095ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka else { 4105ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka if (stubNum == 0) { 4115ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka needHelper = false; 4125ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka return ""; 4135ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka } 4145ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka result = vMips16Helper[stubNum]; 4155ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka } 4165ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka needHelper = true; 4175ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka return result; 4185ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka} 4195ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka 4205ac065a79767cc112eba63136183b7103765d0d3Akira Hatanakavoid Mips16TargetLowering:: 4215ac065a79767cc112eba63136183b7103765d0d3Akira HatanakagetOpndList(SmallVectorImpl<SDValue> &Ops, 4225ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka std::deque< std::pair<unsigned, SDValue> > &RegsToPass, 4235ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka bool IsPICCall, bool GlobalOrExternal, bool InternalLinkage, 42437ed9c199ca639565f6ce88105f9e39e898d82d0Stephen Hines bool IsCallReloc, CallLoweringInfo &CLI, SDValue Callee, 42537ed9c199ca639565f6ce88105f9e39e898d82d0Stephen Hines SDValue Chain) const { 4265ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka SelectionDAG &DAG = CLI.DAG; 4276ff59a16a05d43fdda587ce600b5b42a63cf3d33Akira Hatanaka MachineFunction &MF = DAG.getMachineFunction(); 4286ff59a16a05d43fdda587ce600b5b42a63cf3d33Akira Hatanaka MipsFunctionInfo *FuncInfo = MF.getInfo<MipsFunctionInfo>(); 429dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines const char* Mips16HelperFunction = nullptr; 4305ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka bool NeedMips16Helper = false; 4315ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka 43237ed9c199ca639565f6ce88105f9e39e898d82d0Stephen Hines if (Subtarget.inMips16HardFloat()) { 4335ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka // 4345ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka // currently we don't have symbols tagged with the mips16 or mips32 4355ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka // qualifier so we will assume that we don't know what kind it is. 4365ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka // and generate the helper 4375ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka // 4385ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka bool LookupHelper = true; 4395ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka if (ExternalSymbolSDNode *S = dyn_cast<ExternalSymbolSDNode>(CLI.Callee)) { 44090cd06e90be1db06bc4812ae9ec96b6638847285Benjamin Kramer Mips16Libcall Find = { RTLIB::UNKNOWN_LIBCALL, S->getSymbol() }; 44190cd06e90be1db06bc4812ae9ec96b6638847285Benjamin Kramer 442dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines if (std::binary_search(std::begin(HardFloatLibCalls), 443dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines std::end(HardFloatLibCalls), Find)) 4445ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka LookupHelper = false; 445b1fa7d4d26533bdd021c3269d14c30eb6096fb7aReed Kotler else { 44636b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines const char *Symbol = S->getSymbol(); 44736b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines Mips16IntrinsicHelperType IntrinsicFind = { Symbol, "" }; 44836b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines const Mips16HardFloatInfo::FuncSignature *Signature = 44936b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines Mips16HardFloatInfo::findFuncSignature(Symbol); 45036b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines if (!IsPICCall && (Signature && (FuncInfo->StubsNeeded.find(Symbol) == 45136b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines FuncInfo->StubsNeeded.end()))) { 45236b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines FuncInfo->StubsNeeded[Symbol] = Signature; 45336b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines // 45436b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines // S2 is normally saved if the stub is for a function which 45536b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines // returns a float or double value and is not otherwise. This is 45636b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines // because more work is required after the function the stub 45736b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines // is calling completes, and so the stub cannot directly return 45836b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines // and the stub has no stack space to store the return address so 45936b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines // S2 is used for that purpose. 46036b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines // In order to take advantage of not saving S2, we need to also 46136b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines // optimize the call in the stub and this requires some further 46236b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines // functionality in MipsAsmPrinter which we don't have yet. 46336b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines // So for now we always save S2. The optimization will be done 46436b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines // in a follow-on patch. 46536b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines // 46636b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines if (1 || (Signature->RetSig != Mips16HardFloatInfo::NoFPRet)) 46736b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines FuncInfo->setSaveS2(); 46836b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines } 469b1fa7d4d26533bdd021c3269d14c30eb6096fb7aReed Kotler // one more look at list of intrinsics 470dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines const Mips16IntrinsicHelperType *Helper = 471dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines std::lower_bound(std::begin(Mips16IntrinsicHelper), 472dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines std::end(Mips16IntrinsicHelper), IntrinsicFind); 473dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines if (Helper != std::end(Mips16IntrinsicHelper) && 474dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines *Helper == IntrinsicFind) { 475dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines Mips16HelperFunction = Helper->Helper; 476b1fa7d4d26533bdd021c3269d14c30eb6096fb7aReed Kotler NeedMips16Helper = true; 477b1fa7d4d26533bdd021c3269d14c30eb6096fb7aReed Kotler LookupHelper = false; 478b1fa7d4d26533bdd021c3269d14c30eb6096fb7aReed Kotler } 479b1fa7d4d26533bdd021c3269d14c30eb6096fb7aReed Kotler 480b1fa7d4d26533bdd021c3269d14c30eb6096fb7aReed Kotler } 48190cd06e90be1db06bc4812ae9ec96b6638847285Benjamin Kramer } else if (GlobalAddressSDNode *G = 48290cd06e90be1db06bc4812ae9ec96b6638847285Benjamin Kramer dyn_cast<GlobalAddressSDNode>(CLI.Callee)) { 48390cd06e90be1db06bc4812ae9ec96b6638847285Benjamin Kramer Mips16Libcall Find = { RTLIB::UNKNOWN_LIBCALL, 48490cd06e90be1db06bc4812ae9ec96b6638847285Benjamin Kramer G->getGlobal()->getName().data() }; 48590cd06e90be1db06bc4812ae9ec96b6638847285Benjamin Kramer 486dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines if (std::binary_search(std::begin(HardFloatLibCalls), 487dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines std::end(HardFloatLibCalls), Find)) 488bf00bf9ad2f07c5c06986930842ace28b8fb2518Reed Kotler LookupHelper = false; 489bf00bf9ad2f07c5c06986930842ace28b8fb2518Reed Kotler } 490dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines if (LookupHelper) 491dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines Mips16HelperFunction = 492dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines getMips16HelperFunction(CLI.RetTy, CLI.getArgs(), NeedMips16Helper); 4935ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka } 4945ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka 4955ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka SDValue JumpTarget = Callee; 4965ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka 4975ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka // T9 should contain the address of the callee function if 498ebe69fe11e48d322045d5949c83283927a0d790bStephen Hines // -relocation-model=pic or it is an indirect call. 4995ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka if (IsPICCall || !GlobalOrExternal) { 5005ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka unsigned V0Reg = Mips::V0; 5015ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka if (NeedMips16Helper) { 5025ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka RegsToPass.push_front(std::make_pair(V0Reg, Callee)); 503f3ef5332fa3f4d5ec72c178a2b19dac363a19383Pirama Arumuga Nainar JumpTarget = DAG.getExternalSymbol(Mips16HelperFunction, 504f3ef5332fa3f4d5ec72c178a2b19dac363a19383Pirama Arumuga Nainar getPointerTy(DAG.getDataLayout())); 5056ff59a16a05d43fdda587ce600b5b42a63cf3d33Akira Hatanaka ExternalSymbolSDNode *S = cast<ExternalSymbolSDNode>(JumpTarget); 506ebe69fe11e48d322045d5949c83283927a0d790bStephen Hines JumpTarget = getAddrGlobal(S, CLI.DL, JumpTarget.getValueType(), DAG, 5076ff59a16a05d43fdda587ce600b5b42a63cf3d33Akira Hatanaka MipsII::MO_GOT, Chain, 5086ff59a16a05d43fdda587ce600b5b42a63cf3d33Akira Hatanaka FuncInfo->callPtrInfo(S->getSymbol())); 5095ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka } else 5105ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka RegsToPass.push_front(std::make_pair((unsigned)Mips::T9, Callee)); 5115ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka } 5125ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka 5135ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka Ops.push_back(JumpTarget); 5145ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka 5155ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka MipsTargetLowering::getOpndList(Ops, RegsToPass, IsPICCall, GlobalOrExternal, 51637ed9c199ca639565f6ce88105f9e39e898d82d0Stephen Hines InternalLinkage, IsCallReloc, CLI, Callee, 51737ed9c199ca639565f6ce88105f9e39e898d82d0Stephen Hines Chain); 5185ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka} 5195ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka 520de2d8694e25a814696358e95141f4b1aa4d8847ePirama Arumuga NainarMachineBasicBlock * 521de2d8694e25a814696358e95141f4b1aa4d8847ePirama Arumuga NainarMips16TargetLowering::emitSel16(unsigned Opc, MachineInstr &MI, 522de2d8694e25a814696358e95141f4b1aa4d8847ePirama Arumuga Nainar MachineBasicBlock *BB) const { 5235ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka if (DontExpandCondPseudos16) 5245ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka return BB; 525ebe69fe11e48d322045d5949c83283927a0d790bStephen Hines const TargetInstrInfo *TII = Subtarget.getInstrInfo(); 526de2d8694e25a814696358e95141f4b1aa4d8847ePirama Arumuga Nainar DebugLoc DL = MI.getDebugLoc(); 5275ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka // To "insert" a SELECT_CC instruction, we actually have to insert the 5285ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka // diamond control-flow pattern. The incoming instruction knows the 5295ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka // destination vreg to set, the condition code register to branch on, the 5305ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka // true/false values to select between, and a branch opcode to use. 5315ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka const BasicBlock *LLVM_BB = BB->getBasicBlock(); 532f3ef5332fa3f4d5ec72c178a2b19dac363a19383Pirama Arumuga Nainar MachineFunction::iterator It = ++BB->getIterator(); 5335ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka 5345ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka // thisMBB: 5355ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka // ... 5365ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka // TrueVal = ... 5375ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka // setcc r1, r2, r3 5385ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka // bNE r1, r0, copy1MBB 5395ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka // fallthrough --> copy0MBB 5405ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka MachineBasicBlock *thisMBB = BB; 5415ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka MachineFunction *F = BB->getParent(); 5425ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka MachineBasicBlock *copy0MBB = F->CreateMachineBasicBlock(LLVM_BB); 5435ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka MachineBasicBlock *sinkMBB = F->CreateMachineBasicBlock(LLVM_BB); 5445ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka F->insert(It, copy0MBB); 5455ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka F->insert(It, sinkMBB); 5465ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka 5475ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka // Transfer the remainder of BB and its successor edges to sinkMBB. 5485ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka sinkMBB->splice(sinkMBB->begin(), BB, 54936b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines std::next(MachineBasicBlock::iterator(MI)), BB->end()); 5505ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka sinkMBB->transferSuccessorsAndUpdatePHIs(BB); 5515ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka 5525ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka // Next, add the true and fallthrough blocks as its successors. 5535ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka BB->addSuccessor(copy0MBB); 5545ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka BB->addSuccessor(sinkMBB); 5555ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka 556de2d8694e25a814696358e95141f4b1aa4d8847ePirama Arumuga Nainar BuildMI(BB, DL, TII->get(Opc)) 557de2d8694e25a814696358e95141f4b1aa4d8847ePirama Arumuga Nainar .addReg(MI.getOperand(3).getReg()) 558de2d8694e25a814696358e95141f4b1aa4d8847ePirama Arumuga Nainar .addMBB(sinkMBB); 5595ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka 5605ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka // copy0MBB: 5615ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka // %FalseValue = ... 5625ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka // # fallthrough to sinkMBB 5635ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka BB = copy0MBB; 5645ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka 5655ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka // Update machine-CFG edges 5665ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka BB->addSuccessor(sinkMBB); 5675ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka 5685ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka // sinkMBB: 5695ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka // %Result = phi [ %TrueValue, thisMBB ], [ %FalseValue, copy0MBB ] 5705ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka // ... 5715ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka BB = sinkMBB; 5725ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka 573de2d8694e25a814696358e95141f4b1aa4d8847ePirama Arumuga Nainar BuildMI(*BB, BB->begin(), DL, TII->get(Mips::PHI), MI.getOperand(0).getReg()) 574de2d8694e25a814696358e95141f4b1aa4d8847ePirama Arumuga Nainar .addReg(MI.getOperand(1).getReg()) 575de2d8694e25a814696358e95141f4b1aa4d8847ePirama Arumuga Nainar .addMBB(thisMBB) 576de2d8694e25a814696358e95141f4b1aa4d8847ePirama Arumuga Nainar .addReg(MI.getOperand(2).getReg()) 577de2d8694e25a814696358e95141f4b1aa4d8847ePirama Arumuga Nainar .addMBB(copy0MBB); 5785ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka 579de2d8694e25a814696358e95141f4b1aa4d8847ePirama Arumuga Nainar MI.eraseFromParent(); // The pseudo instruction is gone now. 5805ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka return BB; 5815ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka} 5825ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka 583ebe69fe11e48d322045d5949c83283927a0d790bStephen HinesMachineBasicBlock * 584de2d8694e25a814696358e95141f4b1aa4d8847ePirama Arumuga NainarMips16TargetLowering::emitSelT16(unsigned Opc1, unsigned Opc2, MachineInstr &MI, 585ebe69fe11e48d322045d5949c83283927a0d790bStephen Hines MachineBasicBlock *BB) const { 5865ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka if (DontExpandCondPseudos16) 5875ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka return BB; 588ebe69fe11e48d322045d5949c83283927a0d790bStephen Hines const TargetInstrInfo *TII = Subtarget.getInstrInfo(); 589de2d8694e25a814696358e95141f4b1aa4d8847ePirama Arumuga Nainar DebugLoc DL = MI.getDebugLoc(); 5905ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka // To "insert" a SELECT_CC instruction, we actually have to insert the 5915ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka // diamond control-flow pattern. The incoming instruction knows the 5925ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka // destination vreg to set, the condition code register to branch on, the 5935ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka // true/false values to select between, and a branch opcode to use. 5945ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka const BasicBlock *LLVM_BB = BB->getBasicBlock(); 595f3ef5332fa3f4d5ec72c178a2b19dac363a19383Pirama Arumuga Nainar MachineFunction::iterator It = ++BB->getIterator(); 5965ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka 5975ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka // thisMBB: 5985ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka // ... 5995ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka // TrueVal = ... 6005ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka // setcc r1, r2, r3 6015ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka // bNE r1, r0, copy1MBB 6025ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka // fallthrough --> copy0MBB 6035ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka MachineBasicBlock *thisMBB = BB; 6045ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka MachineFunction *F = BB->getParent(); 6055ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka MachineBasicBlock *copy0MBB = F->CreateMachineBasicBlock(LLVM_BB); 6065ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka MachineBasicBlock *sinkMBB = F->CreateMachineBasicBlock(LLVM_BB); 6075ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka F->insert(It, copy0MBB); 6085ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka F->insert(It, sinkMBB); 6095ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka 6105ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka // Transfer the remainder of BB and its successor edges to sinkMBB. 6115ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka sinkMBB->splice(sinkMBB->begin(), BB, 61236b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines std::next(MachineBasicBlock::iterator(MI)), BB->end()); 6135ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka sinkMBB->transferSuccessorsAndUpdatePHIs(BB); 6145ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka 6155ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka // Next, add the true and fallthrough blocks as its successors. 6165ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka BB->addSuccessor(copy0MBB); 6175ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka BB->addSuccessor(sinkMBB); 6185ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka 619de2d8694e25a814696358e95141f4b1aa4d8847ePirama Arumuga Nainar BuildMI(BB, DL, TII->get(Opc2)) 620de2d8694e25a814696358e95141f4b1aa4d8847ePirama Arumuga Nainar .addReg(MI.getOperand(3).getReg()) 621de2d8694e25a814696358e95141f4b1aa4d8847ePirama Arumuga Nainar .addReg(MI.getOperand(4).getReg()); 6225ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka BuildMI(BB, DL, TII->get(Opc1)).addMBB(sinkMBB); 6235ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka 6245ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka // copy0MBB: 6255ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka // %FalseValue = ... 6265ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka // # fallthrough to sinkMBB 6275ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka BB = copy0MBB; 6285ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka 6295ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka // Update machine-CFG edges 6305ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka BB->addSuccessor(sinkMBB); 6315ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka 6325ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka // sinkMBB: 6335ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka // %Result = phi [ %TrueValue, thisMBB ], [ %FalseValue, copy0MBB ] 6345ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka // ... 6355ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka BB = sinkMBB; 6365ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka 637de2d8694e25a814696358e95141f4b1aa4d8847ePirama Arumuga Nainar BuildMI(*BB, BB->begin(), DL, TII->get(Mips::PHI), MI.getOperand(0).getReg()) 638de2d8694e25a814696358e95141f4b1aa4d8847ePirama Arumuga Nainar .addReg(MI.getOperand(1).getReg()) 639de2d8694e25a814696358e95141f4b1aa4d8847ePirama Arumuga Nainar .addMBB(thisMBB) 640de2d8694e25a814696358e95141f4b1aa4d8847ePirama Arumuga Nainar .addReg(MI.getOperand(2).getReg()) 641de2d8694e25a814696358e95141f4b1aa4d8847ePirama Arumuga Nainar .addMBB(copy0MBB); 6425ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka 643de2d8694e25a814696358e95141f4b1aa4d8847ePirama Arumuga Nainar MI.eraseFromParent(); // The pseudo instruction is gone now. 6445ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka return BB; 6455ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka 6465ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka} 6475ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka 648ebe69fe11e48d322045d5949c83283927a0d790bStephen HinesMachineBasicBlock * 649ebe69fe11e48d322045d5949c83283927a0d790bStephen HinesMips16TargetLowering::emitSeliT16(unsigned Opc1, unsigned Opc2, 650de2d8694e25a814696358e95141f4b1aa4d8847ePirama Arumuga Nainar MachineInstr &MI, 651ebe69fe11e48d322045d5949c83283927a0d790bStephen Hines MachineBasicBlock *BB) const { 6525ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka if (DontExpandCondPseudos16) 6535ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka return BB; 654ebe69fe11e48d322045d5949c83283927a0d790bStephen Hines const TargetInstrInfo *TII = Subtarget.getInstrInfo(); 655de2d8694e25a814696358e95141f4b1aa4d8847ePirama Arumuga Nainar DebugLoc DL = MI.getDebugLoc(); 6565ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka // To "insert" a SELECT_CC instruction, we actually have to insert the 6575ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka // diamond control-flow pattern. The incoming instruction knows the 6585ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka // destination vreg to set, the condition code register to branch on, the 6595ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka // true/false values to select between, and a branch opcode to use. 6605ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka const BasicBlock *LLVM_BB = BB->getBasicBlock(); 661f3ef5332fa3f4d5ec72c178a2b19dac363a19383Pirama Arumuga Nainar MachineFunction::iterator It = ++BB->getIterator(); 6625ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka 6635ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka // thisMBB: 6645ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka // ... 6655ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka // TrueVal = ... 6665ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka // setcc r1, r2, r3 6675ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka // bNE r1, r0, copy1MBB 6685ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka // fallthrough --> copy0MBB 6695ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka MachineBasicBlock *thisMBB = BB; 6705ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka MachineFunction *F = BB->getParent(); 6715ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka MachineBasicBlock *copy0MBB = F->CreateMachineBasicBlock(LLVM_BB); 6725ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka MachineBasicBlock *sinkMBB = F->CreateMachineBasicBlock(LLVM_BB); 6735ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka F->insert(It, copy0MBB); 6745ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka F->insert(It, sinkMBB); 6755ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka 6765ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka // Transfer the remainder of BB and its successor edges to sinkMBB. 6775ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka sinkMBB->splice(sinkMBB->begin(), BB, 67836b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines std::next(MachineBasicBlock::iterator(MI)), BB->end()); 6795ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka sinkMBB->transferSuccessorsAndUpdatePHIs(BB); 6805ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka 6815ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka // Next, add the true and fallthrough blocks as its successors. 6825ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka BB->addSuccessor(copy0MBB); 6835ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka BB->addSuccessor(sinkMBB); 6845ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka 685de2d8694e25a814696358e95141f4b1aa4d8847ePirama Arumuga Nainar BuildMI(BB, DL, TII->get(Opc2)) 686de2d8694e25a814696358e95141f4b1aa4d8847ePirama Arumuga Nainar .addReg(MI.getOperand(3).getReg()) 687de2d8694e25a814696358e95141f4b1aa4d8847ePirama Arumuga Nainar .addImm(MI.getOperand(4).getImm()); 6885ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka BuildMI(BB, DL, TII->get(Opc1)).addMBB(sinkMBB); 6895ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka 6905ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka // copy0MBB: 6915ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka // %FalseValue = ... 6925ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka // # fallthrough to sinkMBB 6935ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka BB = copy0MBB; 6945ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka 6955ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka // Update machine-CFG edges 6965ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka BB->addSuccessor(sinkMBB); 6975ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka 6985ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka // sinkMBB: 6995ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka // %Result = phi [ %TrueValue, thisMBB ], [ %FalseValue, copy0MBB ] 7005ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka // ... 7015ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka BB = sinkMBB; 7025ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka 703de2d8694e25a814696358e95141f4b1aa4d8847ePirama Arumuga Nainar BuildMI(*BB, BB->begin(), DL, TII->get(Mips::PHI), MI.getOperand(0).getReg()) 704de2d8694e25a814696358e95141f4b1aa4d8847ePirama Arumuga Nainar .addReg(MI.getOperand(1).getReg()) 705de2d8694e25a814696358e95141f4b1aa4d8847ePirama Arumuga Nainar .addMBB(thisMBB) 706de2d8694e25a814696358e95141f4b1aa4d8847ePirama Arumuga Nainar .addReg(MI.getOperand(2).getReg()) 707de2d8694e25a814696358e95141f4b1aa4d8847ePirama Arumuga Nainar .addMBB(copy0MBB); 7085ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka 709de2d8694e25a814696358e95141f4b1aa4d8847ePirama Arumuga Nainar MI.eraseFromParent(); // The pseudo instruction is gone now. 7105ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka return BB; 7115ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka 7125ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka} 7135ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka 714ebe69fe11e48d322045d5949c83283927a0d790bStephen HinesMachineBasicBlock * 715ebe69fe11e48d322045d5949c83283927a0d790bStephen HinesMips16TargetLowering::emitFEXT_T8I816_ins(unsigned BtOpc, unsigned CmpOpc, 716de2d8694e25a814696358e95141f4b1aa4d8847ePirama Arumuga Nainar MachineInstr &MI, 717ebe69fe11e48d322045d5949c83283927a0d790bStephen Hines MachineBasicBlock *BB) const { 7185ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka if (DontExpandCondPseudos16) 7195ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka return BB; 720ebe69fe11e48d322045d5949c83283927a0d790bStephen Hines const TargetInstrInfo *TII = Subtarget.getInstrInfo(); 721de2d8694e25a814696358e95141f4b1aa4d8847ePirama Arumuga Nainar unsigned regX = MI.getOperand(0).getReg(); 722de2d8694e25a814696358e95141f4b1aa4d8847ePirama Arumuga Nainar unsigned regY = MI.getOperand(1).getReg(); 723de2d8694e25a814696358e95141f4b1aa4d8847ePirama Arumuga Nainar MachineBasicBlock *target = MI.getOperand(2).getMBB(); 724de2d8694e25a814696358e95141f4b1aa4d8847ePirama Arumuga Nainar BuildMI(*BB, MI, MI.getDebugLoc(), TII->get(CmpOpc)) 725de2d8694e25a814696358e95141f4b1aa4d8847ePirama Arumuga Nainar .addReg(regX) 726de2d8694e25a814696358e95141f4b1aa4d8847ePirama Arumuga Nainar .addReg(regY); 727de2d8694e25a814696358e95141f4b1aa4d8847ePirama Arumuga Nainar BuildMI(*BB, MI, MI.getDebugLoc(), TII->get(BtOpc)).addMBB(target); 728de2d8694e25a814696358e95141f4b1aa4d8847ePirama Arumuga Nainar MI.eraseFromParent(); // The pseudo instruction is gone now. 7295ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka return BB; 7305ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka} 7315ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka 7325ac065a79767cc112eba63136183b7103765d0d3Akira HatanakaMachineBasicBlock *Mips16TargetLowering::emitFEXT_T8I8I16_ins( 733ebe69fe11e48d322045d5949c83283927a0d790bStephen Hines unsigned BtOpc, unsigned CmpiOpc, unsigned CmpiXOpc, bool ImmSigned, 734de2d8694e25a814696358e95141f4b1aa4d8847ePirama Arumuga Nainar MachineInstr &MI, MachineBasicBlock *BB) const { 7355ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka if (DontExpandCondPseudos16) 7365ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka return BB; 737ebe69fe11e48d322045d5949c83283927a0d790bStephen Hines const TargetInstrInfo *TII = Subtarget.getInstrInfo(); 738de2d8694e25a814696358e95141f4b1aa4d8847ePirama Arumuga Nainar unsigned regX = MI.getOperand(0).getReg(); 739de2d8694e25a814696358e95141f4b1aa4d8847ePirama Arumuga Nainar int64_t imm = MI.getOperand(1).getImm(); 740de2d8694e25a814696358e95141f4b1aa4d8847ePirama Arumuga Nainar MachineBasicBlock *target = MI.getOperand(2).getMBB(); 7415ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka unsigned CmpOpc; 7425ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka if (isUInt<8>(imm)) 7435ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka CmpOpc = CmpiOpc; 744b0ee97a366a07c05b2c8ab314e29f5e72a9b7bfbReed Kotler else if ((!ImmSigned && isUInt<16>(imm)) || 745b0ee97a366a07c05b2c8ab314e29f5e72a9b7bfbReed Kotler (ImmSigned && isInt<16>(imm))) 7465ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka CmpOpc = CmpiXOpc; 7475ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka else 7485ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka llvm_unreachable("immediate field not usable"); 749de2d8694e25a814696358e95141f4b1aa4d8847ePirama Arumuga Nainar BuildMI(*BB, MI, MI.getDebugLoc(), TII->get(CmpOpc)).addReg(regX).addImm(imm); 750de2d8694e25a814696358e95141f4b1aa4d8847ePirama Arumuga Nainar BuildMI(*BB, MI, MI.getDebugLoc(), TII->get(BtOpc)).addMBB(target); 751de2d8694e25a814696358e95141f4b1aa4d8847ePirama Arumuga Nainar MI.eraseFromParent(); // The pseudo instruction is gone now. 7525ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka return BB; 7535ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka} 7545ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka 7555ac065a79767cc112eba63136183b7103765d0d3Akira Hatanakastatic unsigned Mips16WhichOp8uOr16simm 7565ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka (unsigned shortOp, unsigned longOp, int64_t Imm) { 7575ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka if (isUInt<8>(Imm)) 7585ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka return shortOp; 7595ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka else if (isInt<16>(Imm)) 7605ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka return longOp; 7615ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka else 7625ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka llvm_unreachable("immediate field not usable"); 7635ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka} 7645ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka 765ebe69fe11e48d322045d5949c83283927a0d790bStephen HinesMachineBasicBlock * 766de2d8694e25a814696358e95141f4b1aa4d8847ePirama Arumuga NainarMips16TargetLowering::emitFEXT_CCRX16_ins(unsigned SltOpc, MachineInstr &MI, 767ebe69fe11e48d322045d5949c83283927a0d790bStephen Hines MachineBasicBlock *BB) const { 7685ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka if (DontExpandCondPseudos16) 7695ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka return BB; 770ebe69fe11e48d322045d5949c83283927a0d790bStephen Hines const TargetInstrInfo *TII = Subtarget.getInstrInfo(); 771de2d8694e25a814696358e95141f4b1aa4d8847ePirama Arumuga Nainar unsigned CC = MI.getOperand(0).getReg(); 772de2d8694e25a814696358e95141f4b1aa4d8847ePirama Arumuga Nainar unsigned regX = MI.getOperand(1).getReg(); 773de2d8694e25a814696358e95141f4b1aa4d8847ePirama Arumuga Nainar unsigned regY = MI.getOperand(2).getReg(); 774de2d8694e25a814696358e95141f4b1aa4d8847ePirama Arumuga Nainar BuildMI(*BB, MI, MI.getDebugLoc(), TII->get(SltOpc)) 775de2d8694e25a814696358e95141f4b1aa4d8847ePirama Arumuga Nainar .addReg(regX) 776de2d8694e25a814696358e95141f4b1aa4d8847ePirama Arumuga Nainar .addReg(regY); 777de2d8694e25a814696358e95141f4b1aa4d8847ePirama Arumuga Nainar BuildMI(*BB, MI, MI.getDebugLoc(), TII->get(Mips::MoveR3216), CC) 778de2d8694e25a814696358e95141f4b1aa4d8847ePirama Arumuga Nainar .addReg(Mips::T8); 779de2d8694e25a814696358e95141f4b1aa4d8847ePirama Arumuga Nainar MI.eraseFromParent(); // The pseudo instruction is gone now. 7805ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka return BB; 7815ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka} 7825ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka 783ebe69fe11e48d322045d5949c83283927a0d790bStephen HinesMachineBasicBlock * 784ebe69fe11e48d322045d5949c83283927a0d790bStephen HinesMips16TargetLowering::emitFEXT_CCRXI16_ins(unsigned SltiOpc, unsigned SltiXOpc, 785de2d8694e25a814696358e95141f4b1aa4d8847ePirama Arumuga Nainar MachineInstr &MI, 786ebe69fe11e48d322045d5949c83283927a0d790bStephen Hines MachineBasicBlock *BB) const { 7875ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka if (DontExpandCondPseudos16) 7885ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka return BB; 789ebe69fe11e48d322045d5949c83283927a0d790bStephen Hines const TargetInstrInfo *TII = Subtarget.getInstrInfo(); 790de2d8694e25a814696358e95141f4b1aa4d8847ePirama Arumuga Nainar unsigned CC = MI.getOperand(0).getReg(); 791de2d8694e25a814696358e95141f4b1aa4d8847ePirama Arumuga Nainar unsigned regX = MI.getOperand(1).getReg(); 792de2d8694e25a814696358e95141f4b1aa4d8847ePirama Arumuga Nainar int64_t Imm = MI.getOperand(2).getImm(); 7935ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka unsigned SltOpc = Mips16WhichOp8uOr16simm(SltiOpc, SltiXOpc, Imm); 794de2d8694e25a814696358e95141f4b1aa4d8847ePirama Arumuga Nainar BuildMI(*BB, MI, MI.getDebugLoc(), TII->get(SltOpc)).addReg(regX).addImm(Imm); 795de2d8694e25a814696358e95141f4b1aa4d8847ePirama Arumuga Nainar BuildMI(*BB, MI, MI.getDebugLoc(), TII->get(Mips::MoveR3216), CC) 796de2d8694e25a814696358e95141f4b1aa4d8847ePirama Arumuga Nainar .addReg(Mips::T8); 797de2d8694e25a814696358e95141f4b1aa4d8847ePirama Arumuga Nainar MI.eraseFromParent(); // The pseudo instruction is gone now. 7985ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka return BB; 7995ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka 8005ac065a79767cc112eba63136183b7103765d0d3Akira Hatanaka} 801