From: Evandro Menezes Date: Tue, 16 Oct 2018 17:19:28 +0000 (+0000) Subject: [NFC][AArch64] Refactor macro fusion X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=de655c6d3af9850521d3908779b13bb41a82a02e;p=platform%2Fupstream%2Fllvm.git [NFC][AArch64] Refactor macro fusion Simplify API of checking functions. llvm-svn: 344624 --- diff --git a/llvm/lib/Target/AArch64/AArch64MacroFusion.cpp b/llvm/lib/Target/AArch64/AArch64MacroFusion.cpp index 43ebcfd..3d1ca7c 100644 --- a/llvm/lib/Target/AArch64/AArch64MacroFusion.cpp +++ b/llvm/lib/Target/AArch64/AArch64MacroFusion.cpp @@ -21,14 +21,16 @@ using namespace llvm; namespace { /// CMN, CMP, TST followed by Bcc -static bool isArithmeticBccPair(unsigned FirstOpcode, unsigned SecondOpcode, - const MachineInstr *FirstMI) { - if (SecondOpcode != AArch64::Bcc) +static bool isArithmeticBccPair(const MachineInstr *FirstMI, + const MachineInstr &SecondMI) { + if (SecondMI.getOpcode() != AArch64::Bcc) return false; - switch (FirstOpcode) { - case AArch64::INSTRUCTION_LIST_END: + // Assume the 1st instr to be a wildcard if it is unspecified. + if (FirstMI == nullptr) return true; + + switch (FirstMI->getOpcode()) { case AArch64::ADDSWri: case AArch64::ADDSWrr: case AArch64::ADDSXri: @@ -55,21 +57,28 @@ static bool isArithmeticBccPair(unsigned FirstOpcode, unsigned SecondOpcode, // Shift value can be 0 making these behave like the "rr" variant... return !AArch64InstrInfo::hasShiftedReg(*FirstMI); } + return false; } /// ALU operations followed by CBZ/CBNZ. -static bool isArithmeticCbzPair(unsigned FirstOpcode, unsigned SecondOpcode, - const MachineInstr *FirstMI) { - if (SecondOpcode != AArch64::CBNZW && - SecondOpcode != AArch64::CBNZX && - SecondOpcode != AArch64::CBZW && - SecondOpcode != AArch64::CBZX) +static bool isArithmeticCbzPair(const MachineInstr *FirstMI, + const MachineInstr &SecondMI) { + switch (SecondMI.getOpcode()) { + default: return false; + case AArch64::CBNZW: + case AArch64::CBNZX: + case AArch64::CBZW: + case AArch64::CBZX: + LLVM_FALLTHROUGH; + } - switch (FirstOpcode) { - case AArch64::INSTRUCTION_LIST_END: + // Assume the 1st instr to be a wildcard if it is unspecified. + if (FirstMI == nullptr) return true; + + switch (FirstMI->getOpcode()) { case AArch64::ADDWri: case AArch64::ADDWrr: case AArch64::ADDXri: @@ -102,34 +111,39 @@ static bool isArithmeticCbzPair(unsigned FirstOpcode, unsigned SecondOpcode, // Shift value can be 0 making these behave like the "rr" variant... return !AArch64InstrInfo::hasShiftedReg(*FirstMI); } + return false; } /// AES crypto encoding or decoding. -static bool isAESPair(unsigned FirstOpcode, unsigned SecondOpcode) { +static bool isAESPair(const MachineInstr *FirstMI, + const MachineInstr &SecondMI) { + // Assume the 1st instr to be a wildcard if it is unspecified. + switch (SecondMI.getOpcode()) { // AES encode. - if ((FirstOpcode == AArch64::INSTRUCTION_LIST_END || - FirstOpcode == AArch64::AESErr) && - (SecondOpcode == AArch64::AESMCrr || - SecondOpcode == AArch64::AESMCrrTied)) - return true; + case AArch64::AESMCrr: + case AArch64::AESMCrrTied: + return FirstMI == nullptr || FirstMI->getOpcode() == AArch64::AESErr; // AES decode. - else if ((FirstOpcode == AArch64::INSTRUCTION_LIST_END || - FirstOpcode == AArch64::AESDrr) && - (SecondOpcode == AArch64::AESIMCrr || - SecondOpcode == AArch64::AESIMCrrTied)) - return true; + case AArch64::AESIMCrr: + case AArch64::AESIMCrrTied: + return FirstMI == nullptr || FirstMI->getOpcode() == AArch64::AESDrr; + } return false; } /// AESE/AESD/PMULL + EOR. -static bool isCryptoEORPair(unsigned FirstOpcode, unsigned SecondOpcode) { - if (SecondOpcode != AArch64::EORv16i8) +static bool isCryptoEORPair(const MachineInstr *FirstMI, + const MachineInstr &SecondMI) { + if (SecondMI.getOpcode() != AArch64::EORv16i8) return false; - switch (FirstOpcode) { - case AArch64::INSTRUCTION_LIST_END: + // Assume the 1st instr to be a wildcard if it is unspecified. + if (FirstMI == nullptr) + return true; + + switch (FirstMI->getOpcode()) { case AArch64::AESErr: case AArch64::AESDrr: case AArch64::PMULLv16i8: @@ -138,45 +152,47 @@ static bool isCryptoEORPair(unsigned FirstOpcode, unsigned SecondOpcode) { case AArch64::PMULLv2i64: return true; } + return false; } /// Literal generation. -static bool isLiteralsPair(unsigned FirstOpcode, unsigned SecondOpcode, - const MachineInstr *FirstMI, +static bool isLiteralsPair(const MachineInstr *FirstMI, const MachineInstr &SecondMI) { + // Assume the 1st instr to be a wildcard if it is unspecified. + // PC relative address. - if ((FirstOpcode == AArch64::INSTRUCTION_LIST_END || - FirstOpcode == AArch64::ADRP) && - SecondOpcode == AArch64::ADDXri) + if ((FirstMI == nullptr || FirstMI->getOpcode() == AArch64::ADRP) && + SecondMI.getOpcode() == AArch64::ADDXri) return true; + // 32 bit immediate. - else if ((FirstOpcode == AArch64::INSTRUCTION_LIST_END || - FirstOpcode == AArch64::MOVZWi) && - (SecondOpcode == AArch64::MOVKWi && - SecondMI.getOperand(3).getImm() == 16)) + if ((FirstMI == nullptr || FirstMI->getOpcode() == AArch64::MOVZWi) && + (SecondMI.getOpcode() == AArch64::MOVKWi && + SecondMI.getOperand(3).getImm() == 16)) return true; + // Lower half of 64 bit immediate. - else if((FirstOpcode == AArch64::INSTRUCTION_LIST_END || - FirstOpcode == AArch64::MOVZXi) && - (SecondOpcode == AArch64::MOVKXi && - SecondMI.getOperand(3).getImm() == 16)) + if((FirstMI == nullptr || FirstMI->getOpcode() == AArch64::MOVZXi) && + (SecondMI.getOpcode() == AArch64::MOVKXi && + SecondMI.getOperand(3).getImm() == 16)) return true; + // Upper half of 64 bit immediate. - else if ((FirstOpcode == AArch64::INSTRUCTION_LIST_END || - (FirstOpcode == AArch64::MOVKXi && - FirstMI->getOperand(3).getImm() == 32)) && - (SecondOpcode == AArch64::MOVKXi && - SecondMI.getOperand(3).getImm() == 48)) + if ((FirstMI == nullptr || + (FirstMI->getOpcode() == AArch64::MOVKXi && + FirstMI->getOperand(3).getImm() == 32)) && + (SecondMI.getOpcode() == AArch64::MOVKXi && + SecondMI.getOperand(3).getImm() == 48)) return true; return false; } -// Fuse address generation and loads or stores. -static bool isAddressLdStPair(unsigned FirstOpcode, unsigned SecondOpcode, +/// Fuse address generation and loads or stores. +static bool isAddressLdStPair(const MachineInstr *FirstMI, const MachineInstr &SecondMI) { - switch (SecondOpcode) { + switch (SecondMI.getOpcode()) { case AArch64::STRBBui: case AArch64::STRBui: case AArch64::STRDui: @@ -200,29 +216,32 @@ static bool isAddressLdStPair(unsigned FirstOpcode, unsigned SecondOpcode, case AArch64::LDRSHWui: case AArch64::LDRSHXui: case AArch64::LDRSWui: - switch (FirstOpcode) { - case AArch64::INSTRUCTION_LIST_END: + // Assume the 1st instr to be a wildcard if it is unspecified. + if (FirstMI == nullptr) return true; + + switch (FirstMI->getOpcode()) { case AArch64::ADR: return SecondMI.getOperand(2).getImm() == 0; case AArch64::ADRP: return true; } } + return false; } -// Compare and conditional select. -static bool isCCSelectPair(unsigned FirstOpcode, unsigned SecondOpcode, - const MachineInstr *FirstMI) { +/// Compare and conditional select. +static bool isCCSelectPair(const MachineInstr *FirstMI, + const MachineInstr &SecondMI) { // 32 bits - if (SecondOpcode == AArch64::CSELWr) { + if (SecondMI.getOpcode() == AArch64::CSELWr) { // Assume the 1st instr to be a wildcard if it is unspecified. - if (FirstOpcode == AArch64::INSTRUCTION_LIST_END) + if (FirstMI == nullptr) return true; if (FirstMI->definesRegister(AArch64::WZR)) - switch (FirstOpcode) { + switch (FirstMI->getOpcode()) { case AArch64::SUBSWrs: return !AArch64InstrInfo::hasShiftedReg(*FirstMI); case AArch64::SUBSWrx: @@ -232,14 +251,15 @@ static bool isCCSelectPair(unsigned FirstOpcode, unsigned SecondOpcode, return true; } } + // 64 bits - else if (SecondOpcode == AArch64::CSELXr) { + if (SecondMI.getOpcode() == AArch64::CSELXr) { // Assume the 1st instr to be a wildcard if it is unspecified. - if (FirstOpcode == AArch64::INSTRUCTION_LIST_END) + if (FirstMI == nullptr) return true; if (FirstMI->definesRegister(AArch64::XZR)) - switch (FirstOpcode) { + switch (FirstMI->getOpcode()) { case AArch64::SUBSXrs: return !AArch64InstrInfo::hasShiftedReg(*FirstMI); case AArch64::SUBSXrx: @@ -250,6 +270,7 @@ static bool isCCSelectPair(unsigned FirstOpcode, unsigned SecondOpcode, return true; } } + return false; } @@ -262,28 +283,21 @@ static bool shouldScheduleAdjacent(const TargetInstrInfo &TII, const MachineInstr &SecondMI) { const AArch64Subtarget &ST = static_cast(TSI); - // Assume the 1st instr to be a wildcard if it is unspecified. - unsigned FirstOpc = - FirstMI ? FirstMI->getOpcode() - : static_cast(AArch64::INSTRUCTION_LIST_END); - unsigned SecondOpc = SecondMI.getOpcode(); - - if (ST.hasArithmeticBccFusion() && - isArithmeticBccPair(FirstOpc, SecondOpc, FirstMI)) + // All checking functions assume that the 1st instr is a wildcard if it is + // unspecified. + if (ST.hasArithmeticBccFusion() && isArithmeticBccPair(FirstMI, SecondMI)) return true; - if (ST.hasArithmeticCbzFusion() && - isArithmeticCbzPair(FirstOpc, SecondOpc, FirstMI)) + if (ST.hasArithmeticCbzFusion() && isArithmeticCbzPair(FirstMI, SecondMI)) return true; - if (ST.hasFuseAES() && isAESPair(FirstOpc, SecondOpc)) + if (ST.hasFuseAES() && isAESPair(FirstMI, SecondMI)) return true; - if (ST.hasFuseCryptoEOR() && isCryptoEORPair(FirstOpc, SecondOpc)) + if (ST.hasFuseCryptoEOR() && isCryptoEORPair(FirstMI, SecondMI)) return true; - if (ST.hasFuseLiterals() && - isLiteralsPair(FirstOpc, SecondOpc, FirstMI, SecondMI)) + if (ST.hasFuseLiterals() && isLiteralsPair(FirstMI, SecondMI)) return true; - if (ST.hasFuseAddress() && isAddressLdStPair(FirstOpc, SecondOpc, SecondMI)) + if (ST.hasFuseAddress() && isAddressLdStPair(FirstMI, SecondMI)) return true; - if (ST.hasFuseCCSelect() && isCCSelectPair(FirstOpc, SecondOpc, FirstMI)) + if (ST.hasFuseCCSelect() && isCCSelectPair(FirstMI, SecondMI)) return true; return false;