forked from OSchip/llvm-project
105 lines
4.3 KiB
TableGen
105 lines
4.3 KiB
TableGen
//==-- AArch64Schedule.td - AArch64 Scheduling Definitions -*- tablegen -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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// Define TII for use in SchedVariant Predicates.
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// const MachineInstr *MI and const TargetSchedModel *SchedModel
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// are defined by default.
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def : PredicateProlog<[{
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const AArch64InstrInfo *TII =
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static_cast<const AArch64InstrInfo*>(SchedModel->getInstrInfo());
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(void)TII;
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}]>;
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// AArch64 Scheduler Definitions
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def WriteImm : SchedWrite; // MOVN, MOVZ
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// TODO: Provide variants for MOV32/64imm Pseudos that dynamically
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// select the correct sequence of WriteImms.
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def WriteI : SchedWrite; // ALU
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def WriteISReg : SchedWrite; // ALU of Shifted-Reg
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def WriteIEReg : SchedWrite; // ALU of Extended-Reg
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def ReadI : SchedRead; // ALU
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def ReadISReg : SchedRead; // ALU of Shifted-Reg
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def ReadIEReg : SchedRead; // ALU of Extended-Reg
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def WriteExtr : SchedWrite; // EXTR shifts a reg pair
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def ReadExtrHi : SchedRead; // Read the high reg of the EXTR pair
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def WriteIS : SchedWrite; // Shift/Scale
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def WriteID32 : SchedWrite; // 32-bit Divide
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def WriteID64 : SchedWrite; // 64-bit Divide
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def ReadID : SchedRead; // 32/64-bit Divide
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def WriteIM32 : SchedWrite; // 32-bit Multiply
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def WriteIM64 : SchedWrite; // 64-bit Multiply
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def ReadIM : SchedRead; // 32/64-bit Multiply
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def ReadIMA : SchedRead; // 32/64-bit Multiply Accumulate
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def WriteBr : SchedWrite; // Branch
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def WriteBrReg : SchedWrite; // Indirect Branch
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def WriteLD : SchedWrite; // Load from base addr plus immediate offset
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def WriteST : SchedWrite; // Store to base addr plus immediate offset
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def WriteSTP : SchedWrite; // Store a register pair.
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def WriteAdr : SchedWrite; // Address pre/post increment.
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def WriteLDIdx : SchedWrite; // Load from a register index (maybe scaled).
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def WriteSTIdx : SchedWrite; // Store to a register index (maybe scaled).
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def ReadAdrBase : SchedRead; // Read the base resister of a reg-offset LD/ST.
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// Predicate for determining when a shiftable register is shifted.
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def RegShiftedPred : SchedPredicate<[{TII->hasShiftedReg(MI)}]>;
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// Predicate for determining when a extendedable register is extended.
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def RegExtendedPred : SchedPredicate<[{TII->hasExtendedReg(MI)}]>;
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// ScaledIdxPred is true if a WriteLDIdx operand will be
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// scaled. Subtargets can use this to dynamically select resources and
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// latency for WriteLDIdx and ReadAdrBase.
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def ScaledIdxPred : SchedPredicate<[{TII->isScaledAddr(MI)}]>;
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// Serialized two-level address load.
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// EXAMPLE: LOADGot
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def WriteLDAdr : WriteSequence<[WriteAdr, WriteLD]>;
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// Serialized two-level address lookup.
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// EXAMPLE: MOVaddr...
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def WriteAdrAdr : WriteSequence<[WriteAdr, WriteAdr]>;
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// The second register of a load-pair.
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// LDP,LDPSW,LDNP,LDXP,LDAXP
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def WriteLDHi : SchedWrite;
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// Store-exclusive is a store followed by a dependent load.
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def WriteSTX : WriteSequence<[WriteST, WriteLD]>;
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def WriteSys : SchedWrite; // Long, variable latency system ops.
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def WriteBarrier : SchedWrite; // Memory barrier.
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def WriteHint : SchedWrite; // Hint instruction.
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def WriteF : SchedWrite; // General floating-point ops.
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def WriteFCmp : SchedWrite; // Floating-point compare.
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def WriteFCvt : SchedWrite; // Float conversion.
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def WriteFCopy : SchedWrite; // Float-int register copy.
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def WriteFImm : SchedWrite; // Floating-point immediate.
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def WriteFMul : SchedWrite; // Floating-point multiply.
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def WriteFDiv : SchedWrite; // Floating-point division.
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def WriteV : SchedWrite; // Vector ops.
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def WriteVLD : SchedWrite; // Vector loads.
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def WriteVST : SchedWrite; // Vector stores.
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// Read the unwritten lanes of the VLD's destination registers.
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def ReadVLD : SchedRead;
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// Sequential vector load and shuffle.
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def WriteVLDShuffle : WriteSequence<[WriteVLD, WriteV]>;
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def WriteVLDPairShuffle : WriteSequence<[WriteVLD, WriteV, WriteV]>;
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// Store a shuffled vector.
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def WriteVSTShuffle : WriteSequence<[WriteV, WriteVST]>;
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def WriteVSTPairShuffle : WriteSequence<[WriteV, WriteV, WriteVST]>;
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