593 lines
23 KiB
C++
593 lines
23 KiB
C++
//===- CodeGenInstruction.cpp - CodeGen Instruction Class Wrapper ---------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// This file implements the CodeGenInstruction class.
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//
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//===----------------------------------------------------------------------===//
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#include "CodeGenInstruction.h"
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#include "CodeGenTarget.h"
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#include "llvm/ADT/StringExtras.h"
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#include "llvm/TableGen/Error.h"
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#include "llvm/TableGen/Record.h"
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#include <set>
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using namespace llvm;
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//===----------------------------------------------------------------------===//
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// CGIOperandList Implementation
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//===----------------------------------------------------------------------===//
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CGIOperandList::CGIOperandList(Record *R) : TheDef(R) {
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isPredicable = false;
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hasOptionalDef = false;
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isVariadic = false;
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DagInit *OutDI = R->getValueAsDag("OutOperandList");
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if (DefInit *Init = dyn_cast<DefInit>(OutDI->getOperator())) {
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if (Init->getDef()->getName() != "outs")
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PrintFatalError(R->getLoc(),
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R->getName() +
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": invalid def name for output list: use 'outs'");
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} else
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PrintFatalError(R->getLoc(),
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R->getName() + ": invalid output list: use 'outs'");
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NumDefs = OutDI->getNumArgs();
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DagInit *InDI = R->getValueAsDag("InOperandList");
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if (DefInit *Init = dyn_cast<DefInit>(InDI->getOperator())) {
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if (Init->getDef()->getName() != "ins")
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PrintFatalError(R->getLoc(),
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R->getName() +
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": invalid def name for input list: use 'ins'");
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} else
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PrintFatalError(R->getLoc(),
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R->getName() + ": invalid input list: use 'ins'");
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unsigned MIOperandNo = 0;
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std::set<std::string> OperandNames;
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unsigned e = InDI->getNumArgs() + OutDI->getNumArgs();
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OperandList.reserve(e);
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bool VariadicOuts = false;
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for (unsigned i = 0; i != e; ++i){
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Init *ArgInit;
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StringRef ArgName;
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if (i < NumDefs) {
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ArgInit = OutDI->getArg(i);
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ArgName = OutDI->getArgNameStr(i);
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} else {
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ArgInit = InDI->getArg(i-NumDefs);
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ArgName = InDI->getArgNameStr(i-NumDefs);
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}
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DagInit *SubArgDag = dyn_cast<DagInit>(ArgInit);
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if (SubArgDag)
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ArgInit = SubArgDag->getOperator();
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DefInit *Arg = dyn_cast<DefInit>(ArgInit);
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if (!Arg)
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PrintFatalError(R->getLoc(), "Illegal operand for the '" + R->getName() +
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"' instruction!");
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Record *Rec = Arg->getDef();
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std::string PrintMethod = "printOperand";
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std::string EncoderMethod;
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std::string OperandType = "OPERAND_UNKNOWN";
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std::string OperandNamespace = "MCOI";
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unsigned NumOps = 1;
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DagInit *MIOpInfo = nullptr;
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if (Rec->isSubClassOf("RegisterOperand")) {
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PrintMethod = std::string(Rec->getValueAsString("PrintMethod"));
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OperandType = std::string(Rec->getValueAsString("OperandType"));
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OperandNamespace = std::string(Rec->getValueAsString("OperandNamespace"));
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EncoderMethod = std::string(Rec->getValueAsString("EncoderMethod"));
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} else if (Rec->isSubClassOf("Operand")) {
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PrintMethod = std::string(Rec->getValueAsString("PrintMethod"));
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OperandType = std::string(Rec->getValueAsString("OperandType"));
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OperandNamespace = std::string(Rec->getValueAsString("OperandNamespace"));
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// If there is an explicit encoder method, use it.
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EncoderMethod = std::string(Rec->getValueAsString("EncoderMethod"));
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MIOpInfo = Rec->getValueAsDag("MIOperandInfo");
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// Verify that MIOpInfo has an 'ops' root value.
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if (!isa<DefInit>(MIOpInfo->getOperator()) ||
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cast<DefInit>(MIOpInfo->getOperator())->getDef()->getName() != "ops")
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PrintFatalError(R->getLoc(),
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"Bad value for MIOperandInfo in operand '" +
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Rec->getName() + "'\n");
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// If we have MIOpInfo, then we have #operands equal to number of entries
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// in MIOperandInfo.
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if (unsigned NumArgs = MIOpInfo->getNumArgs())
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NumOps = NumArgs;
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if (Rec->isSubClassOf("PredicateOp"))
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isPredicable = true;
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else if (Rec->isSubClassOf("OptionalDefOperand"))
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hasOptionalDef = true;
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} else if (Rec->getName() == "variable_ops") {
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if (i < NumDefs)
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VariadicOuts = true;
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isVariadic = true;
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continue;
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} else if (Rec->isSubClassOf("RegisterClass")) {
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OperandType = "OPERAND_REGISTER";
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} else if (!Rec->isSubClassOf("PointerLikeRegClass") &&
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!Rec->isSubClassOf("unknown_class")) {
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PrintFatalError(R->getLoc(), "Unknown operand class '" + Rec->getName() +
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"' in '" + R->getName() +
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"' instruction!");
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}
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// Check that the operand has a name and that it's unique.
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if (ArgName.empty())
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PrintFatalError(R->getLoc(), "In instruction '" + R->getName() +
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"', operand #" + Twine(i) +
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" has no name!");
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if (!OperandNames.insert(std::string(ArgName)).second)
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PrintFatalError(R->getLoc(),
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"In instruction '" + R->getName() + "', operand #" +
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Twine(i) +
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" has the same name as a previous operand!");
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OperandInfo &OpInfo = OperandList.emplace_back(
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Rec, std::string(ArgName), std::string(PrintMethod),
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OperandNamespace + "::" + OperandType, MIOperandNo, NumOps, MIOpInfo);
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if (SubArgDag) {
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if (SubArgDag->getNumArgs() != NumOps) {
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PrintFatalError(R->getLoc(), "In instruction '" + R->getName() +
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"', operand #" + Twine(i) + " has " +
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Twine(SubArgDag->getNumArgs()) +
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" sub-arg names, expected " +
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Twine(NumOps) + ".");
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}
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for (unsigned j = 0; j < NumOps; ++j) {
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if (!isa<UnsetInit>(SubArgDag->getArg(j)))
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PrintFatalError(R->getLoc(),
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"In instruction '" + R->getName() + "', operand #" +
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Twine(i) + " sub-arg #" + Twine(j) +
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" has unexpected operand (expected only $name).");
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StringRef SubArgName = SubArgDag->getArgNameStr(j);
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if (SubArgName.empty())
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PrintFatalError(R->getLoc(), "In instruction '" + R->getName() +
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"', operand #" + Twine(i) +
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" has no name!");
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if (!OperandNames.insert(std::string(SubArgName)).second)
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PrintFatalError(R->getLoc(),
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"In instruction '" + R->getName() + "', operand #" +
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Twine(i) + " sub-arg #" + Twine(j) +
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" has the same name as a previous operand!");
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if (auto MaybeEncoderMethod =
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cast<DefInit>(MIOpInfo->getArg(j))
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->getDef()
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->getValueAsOptionalString("EncoderMethod")) {
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OpInfo.EncoderMethodNames[j] = *MaybeEncoderMethod;
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}
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OpInfo.SubOpNames[j] = SubArgName;
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SubOpAliases[SubArgName] = std::make_pair(i, j);
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}
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} else if (!EncoderMethod.empty()) {
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// If we have no explicit sub-op dag, but have an top-level encoder
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// method, the single encoder will multiple sub-ops, itself.
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OpInfo.EncoderMethodNames[0] = EncoderMethod;
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for (unsigned j = 1; j < NumOps; ++j)
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OpInfo.DoNotEncode[j] = true;
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}
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MIOperandNo += NumOps;
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}
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if (VariadicOuts)
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--NumDefs;
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}
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/// getOperandNamed - Return the index of the operand with the specified
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/// non-empty name. If the instruction does not have an operand with the
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/// specified name, abort.
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///
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unsigned CGIOperandList::getOperandNamed(StringRef Name) const {
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unsigned OpIdx;
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if (hasOperandNamed(Name, OpIdx))
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return OpIdx;
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PrintFatalError(TheDef->getLoc(), "'" + TheDef->getName() +
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"' does not have an operand named '$" +
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Name + "'!");
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}
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/// hasOperandNamed - Query whether the instruction has an operand of the
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/// given name. If so, return true and set OpIdx to the index of the
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/// operand. Otherwise, return false.
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bool CGIOperandList::hasOperandNamed(StringRef Name, unsigned &OpIdx) const {
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assert(!Name.empty() && "Cannot search for operand with no name!");
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for (unsigned i = 0, e = OperandList.size(); i != e; ++i)
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if (OperandList[i].Name == Name) {
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OpIdx = i;
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return true;
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}
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return false;
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}
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bool CGIOperandList::hasSubOperandAlias(
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StringRef Name, std::pair<unsigned, unsigned> &SubOp) const {
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assert(!Name.empty() && "Cannot search for operand with no name!");
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auto SubOpIter = SubOpAliases.find(Name);
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if (SubOpIter != SubOpAliases.end()) {
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SubOp = SubOpIter->second;
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return true;
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}
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return false;
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}
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std::pair<unsigned,unsigned>
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CGIOperandList::ParseOperandName(StringRef Op, bool AllowWholeOp) {
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if (Op.empty() || Op[0] != '$')
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PrintFatalError(TheDef->getLoc(),
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TheDef->getName() + ": Illegal operand name: '" + Op + "'");
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StringRef OpName = Op.substr(1);
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StringRef SubOpName;
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// Check to see if this is $foo.bar.
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StringRef::size_type DotIdx = OpName.find_first_of('.');
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if (DotIdx != StringRef::npos) {
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SubOpName = OpName.substr(DotIdx+1);
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if (SubOpName.empty())
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PrintFatalError(TheDef->getLoc(),
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TheDef->getName() +
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": illegal empty suboperand name in '" + Op + "'");
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OpName = OpName.substr(0, DotIdx);
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}
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unsigned OpIdx;
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if (std::pair<unsigned, unsigned> SubOp; hasSubOperandAlias(OpName, SubOp)) {
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// Found a name for a piece of an operand, just return it directly.
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if (!SubOpName.empty()) {
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PrintFatalError(
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TheDef->getLoc(),
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TheDef->getName() +
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": Cannot use dotted suboperand name within suboperand '" +
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OpName + "'");
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}
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return SubOp;
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}
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OpIdx = getOperandNamed(OpName);
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if (SubOpName.empty()) { // If no suboperand name was specified:
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// If one was needed, throw.
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if (OperandList[OpIdx].MINumOperands > 1 && !AllowWholeOp &&
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SubOpName.empty())
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PrintFatalError(TheDef->getLoc(),
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TheDef->getName() +
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": Illegal to refer to"
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" whole operand part of complex operand '" +
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Op + "'");
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// Otherwise, return the operand.
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return std::make_pair(OpIdx, 0U);
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}
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// Find the suboperand number involved.
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DagInit *MIOpInfo = OperandList[OpIdx].MIOperandInfo;
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if (!MIOpInfo)
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PrintFatalError(TheDef->getLoc(), TheDef->getName() +
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": unknown suboperand name in '" +
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Op + "'");
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// Find the operand with the right name.
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for (unsigned i = 0, e = MIOpInfo->getNumArgs(); i != e; ++i)
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if (MIOpInfo->getArgNameStr(i) == SubOpName)
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return std::make_pair(OpIdx, i);
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// Otherwise, didn't find it!
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PrintFatalError(TheDef->getLoc(), TheDef->getName() +
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": unknown suboperand name in '" + Op +
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"'");
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return std::make_pair(0U, 0U);
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}
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static void ParseConstraint(StringRef CStr, CGIOperandList &Ops,
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Record *Rec) {
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// EARLY_CLOBBER: @early $reg
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StringRef::size_type wpos = CStr.find_first_of(" \t");
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StringRef::size_type start = CStr.find_first_not_of(" \t");
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StringRef Tok = CStr.substr(start, wpos - start);
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if (Tok == "@earlyclobber") {
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StringRef Name = CStr.substr(wpos+1);
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wpos = Name.find_first_not_of(" \t");
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if (wpos == StringRef::npos)
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PrintFatalError(
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Rec->getLoc(), "Illegal format for @earlyclobber constraint in '" +
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Rec->getName() + "': '" + CStr + "'");
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Name = Name.substr(wpos);
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std::pair<unsigned,unsigned> Op = Ops.ParseOperandName(Name, false);
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// Build the string for the operand
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if (!Ops[Op.first].Constraints[Op.second].isNone())
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PrintFatalError(
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Rec->getLoc(), "Operand '" + Name + "' of '" + Rec->getName() +
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"' cannot have multiple constraints!");
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Ops[Op.first].Constraints[Op.second] =
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CGIOperandList::ConstraintInfo::getEarlyClobber();
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return;
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}
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// Only other constraint is "TIED_TO" for now.
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StringRef::size_type pos = CStr.find_first_of('=');
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if (pos == StringRef::npos)
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PrintFatalError(
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Rec->getLoc(), "Unrecognized constraint '" + CStr +
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"' in '" + Rec->getName() + "'");
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start = CStr.find_first_not_of(" \t");
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// TIED_TO: $src1 = $dst
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wpos = CStr.find_first_of(" \t", start);
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if (wpos == StringRef::npos || wpos > pos)
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PrintFatalError(
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Rec->getLoc(), "Illegal format for tied-to constraint in '" +
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Rec->getName() + "': '" + CStr + "'");
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StringRef LHSOpName = CStr.substr(start, wpos - start);
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std::pair<unsigned,unsigned> LHSOp = Ops.ParseOperandName(LHSOpName, false);
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wpos = CStr.find_first_not_of(" \t", pos + 1);
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if (wpos == StringRef::npos)
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PrintFatalError(
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Rec->getLoc(), "Illegal format for tied-to constraint: '" + CStr + "'");
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StringRef RHSOpName = CStr.substr(wpos);
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std::pair<unsigned,unsigned> RHSOp = Ops.ParseOperandName(RHSOpName, false);
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// Sort the operands into order, which should put the output one
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// first. But keep the original order, for use in diagnostics.
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bool FirstIsDest = (LHSOp < RHSOp);
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std::pair<unsigned,unsigned> DestOp = (FirstIsDest ? LHSOp : RHSOp);
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StringRef DestOpName = (FirstIsDest ? LHSOpName : RHSOpName);
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std::pair<unsigned,unsigned> SrcOp = (FirstIsDest ? RHSOp : LHSOp);
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StringRef SrcOpName = (FirstIsDest ? RHSOpName : LHSOpName);
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// Ensure one operand is a def and the other is a use.
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if (DestOp.first >= Ops.NumDefs)
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PrintFatalError(
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Rec->getLoc(), "Input operands '" + LHSOpName + "' and '" + RHSOpName +
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"' of '" + Rec->getName() + "' cannot be tied!");
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if (SrcOp.first < Ops.NumDefs)
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PrintFatalError(
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Rec->getLoc(), "Output operands '" + LHSOpName + "' and '" + RHSOpName +
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"' of '" + Rec->getName() + "' cannot be tied!");
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// The constraint has to go on the operand with higher index, i.e.
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// the source one. Check there isn't another constraint there
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// already.
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if (!Ops[SrcOp.first].Constraints[SrcOp.second].isNone())
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PrintFatalError(
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Rec->getLoc(), "Operand '" + SrcOpName + "' of '" + Rec->getName() +
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"' cannot have multiple constraints!");
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unsigned DestFlatOpNo = Ops.getFlattenedOperandNumber(DestOp);
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auto NewConstraint = CGIOperandList::ConstraintInfo::getTied(DestFlatOpNo);
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// Check that the earlier operand is not the target of another tie
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// before making it the target of this one.
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for (const CGIOperandList::OperandInfo &Op : Ops) {
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for (unsigned i = 0; i < Op.MINumOperands; i++)
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if (Op.Constraints[i] == NewConstraint)
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PrintFatalError(
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Rec->getLoc(), "Operand '" + DestOpName + "' of '" + Rec->getName() +
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"' cannot have multiple operands tied to it!");
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}
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Ops[SrcOp.first].Constraints[SrcOp.second] = NewConstraint;
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}
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static void ParseConstraints(StringRef CStr, CGIOperandList &Ops, Record *Rec) {
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if (CStr.empty()) return;
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StringRef delims(",");
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StringRef::size_type bidx, eidx;
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bidx = CStr.find_first_not_of(delims);
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while (bidx != StringRef::npos) {
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eidx = CStr.find_first_of(delims, bidx);
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if (eidx == StringRef::npos)
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eidx = CStr.size();
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ParseConstraint(CStr.substr(bidx, eidx - bidx), Ops, Rec);
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bidx = CStr.find_first_not_of(delims, eidx);
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}
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}
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void CGIOperandList::ProcessDisableEncoding(StringRef DisableEncoding) {
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while (true) {
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StringRef OpName;
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std::tie(OpName, DisableEncoding) = getToken(DisableEncoding, " ,\t");
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if (OpName.empty()) break;
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// Figure out which operand this is.
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std::pair<unsigned,unsigned> Op = ParseOperandName(OpName, false);
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// Mark the operand as not-to-be encoded.
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OperandList[Op.first].DoNotEncode[Op.second] = true;
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}
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}
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//===----------------------------------------------------------------------===//
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// CodeGenInstruction Implementation
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//===----------------------------------------------------------------------===//
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CodeGenInstruction::CodeGenInstruction(Record *R)
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: TheDef(R), Operands(R), InferredFrom(nullptr) {
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Namespace = R->getValueAsString("Namespace");
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AsmString = std::string(R->getValueAsString("AsmString"));
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isPreISelOpcode = R->getValueAsBit("isPreISelOpcode");
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isReturn = R->getValueAsBit("isReturn");
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isEHScopeReturn = R->getValueAsBit("isEHScopeReturn");
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isBranch = R->getValueAsBit("isBranch");
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isIndirectBranch = R->getValueAsBit("isIndirectBranch");
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isCompare = R->getValueAsBit("isCompare");
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isMoveImm = R->getValueAsBit("isMoveImm");
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isMoveReg = R->getValueAsBit("isMoveReg");
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isBitcast = R->getValueAsBit("isBitcast");
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isSelect = R->getValueAsBit("isSelect");
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isBarrier = R->getValueAsBit("isBarrier");
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isCall = R->getValueAsBit("isCall");
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isAdd = R->getValueAsBit("isAdd");
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isTrap = R->getValueAsBit("isTrap");
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canFoldAsLoad = R->getValueAsBit("canFoldAsLoad");
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isPredicable = !R->getValueAsBit("isUnpredicable") && (
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Operands.isPredicable || R->getValueAsBit("isPredicable"));
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isConvertibleToThreeAddress = R->getValueAsBit("isConvertibleToThreeAddress");
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isCommutable = R->getValueAsBit("isCommutable");
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isTerminator = R->getValueAsBit("isTerminator");
|
|
isReMaterializable = R->getValueAsBit("isReMaterializable");
|
|
hasDelaySlot = R->getValueAsBit("hasDelaySlot");
|
|
usesCustomInserter = R->getValueAsBit("usesCustomInserter");
|
|
hasPostISelHook = R->getValueAsBit("hasPostISelHook");
|
|
hasCtrlDep = R->getValueAsBit("hasCtrlDep");
|
|
isNotDuplicable = R->getValueAsBit("isNotDuplicable");
|
|
isRegSequence = R->getValueAsBit("isRegSequence");
|
|
isExtractSubreg = R->getValueAsBit("isExtractSubreg");
|
|
isInsertSubreg = R->getValueAsBit("isInsertSubreg");
|
|
isConvergent = R->getValueAsBit("isConvergent");
|
|
hasNoSchedulingInfo = R->getValueAsBit("hasNoSchedulingInfo");
|
|
FastISelShouldIgnore = R->getValueAsBit("FastISelShouldIgnore");
|
|
variadicOpsAreDefs = R->getValueAsBit("variadicOpsAreDefs");
|
|
isAuthenticated = R->getValueAsBit("isAuthenticated");
|
|
|
|
bool Unset;
|
|
mayLoad = R->getValueAsBitOrUnset("mayLoad", Unset);
|
|
mayLoad_Unset = Unset;
|
|
mayStore = R->getValueAsBitOrUnset("mayStore", Unset);
|
|
mayStore_Unset = Unset;
|
|
mayRaiseFPException = R->getValueAsBit("mayRaiseFPException");
|
|
hasSideEffects = R->getValueAsBitOrUnset("hasSideEffects", Unset);
|
|
hasSideEffects_Unset = Unset;
|
|
|
|
isAsCheapAsAMove = R->getValueAsBit("isAsCheapAsAMove");
|
|
hasExtraSrcRegAllocReq = R->getValueAsBit("hasExtraSrcRegAllocReq");
|
|
hasExtraDefRegAllocReq = R->getValueAsBit("hasExtraDefRegAllocReq");
|
|
isCodeGenOnly = R->getValueAsBit("isCodeGenOnly");
|
|
isPseudo = R->getValueAsBit("isPseudo");
|
|
isMeta = R->getValueAsBit("isMeta");
|
|
ImplicitDefs = R->getValueAsListOfDefs("Defs");
|
|
ImplicitUses = R->getValueAsListOfDefs("Uses");
|
|
|
|
// This flag is only inferred from the pattern.
|
|
hasChain = false;
|
|
hasChain_Inferred = false;
|
|
|
|
// Parse Constraints.
|
|
ParseConstraints(R->getValueAsString("Constraints"), Operands, R);
|
|
|
|
// Parse the DisableEncoding field.
|
|
Operands.ProcessDisableEncoding(
|
|
R->getValueAsString("DisableEncoding"));
|
|
|
|
// First check for a ComplexDeprecationPredicate.
|
|
if (R->getValue("ComplexDeprecationPredicate")) {
|
|
HasComplexDeprecationPredicate = true;
|
|
DeprecatedReason =
|
|
std::string(R->getValueAsString("ComplexDeprecationPredicate"));
|
|
} else if (RecordVal *Dep = R->getValue("DeprecatedFeatureMask")) {
|
|
// Check if we have a Subtarget feature mask.
|
|
HasComplexDeprecationPredicate = false;
|
|
DeprecatedReason = Dep->getValue()->getAsString();
|
|
} else {
|
|
// This instruction isn't deprecated.
|
|
HasComplexDeprecationPredicate = false;
|
|
DeprecatedReason = "";
|
|
}
|
|
}
|
|
|
|
/// HasOneImplicitDefWithKnownVT - If the instruction has at least one
|
|
/// implicit def and it has a known VT, return the VT, otherwise return
|
|
/// MVT::Other.
|
|
MVT::SimpleValueType CodeGenInstruction::
|
|
HasOneImplicitDefWithKnownVT(const CodeGenTarget &TargetInfo) const {
|
|
if (ImplicitDefs.empty()) return MVT::Other;
|
|
|
|
// Check to see if the first implicit def has a resolvable type.
|
|
Record *FirstImplicitDef = ImplicitDefs[0];
|
|
assert(FirstImplicitDef->isSubClassOf("Register"));
|
|
const std::vector<ValueTypeByHwMode> &RegVTs =
|
|
TargetInfo.getRegisterVTs(FirstImplicitDef);
|
|
if (RegVTs.size() == 1 && RegVTs[0].isSimple())
|
|
return RegVTs[0].getSimple().SimpleTy;
|
|
return MVT::Other;
|
|
}
|
|
|
|
|
|
/// FlattenAsmStringVariants - Flatten the specified AsmString to only
|
|
/// include text from the specified variant, returning the new string.
|
|
std::string CodeGenInstruction::
|
|
FlattenAsmStringVariants(StringRef Cur, unsigned Variant) {
|
|
std::string Res;
|
|
|
|
for (;;) {
|
|
// Find the start of the next variant string.
|
|
size_t VariantsStart = 0;
|
|
for (size_t e = Cur.size(); VariantsStart != e; ++VariantsStart)
|
|
if (Cur[VariantsStart] == '{' &&
|
|
(VariantsStart == 0 || (Cur[VariantsStart-1] != '$' &&
|
|
Cur[VariantsStart-1] != '\\')))
|
|
break;
|
|
|
|
// Add the prefix to the result.
|
|
Res += Cur.slice(0, VariantsStart);
|
|
if (VariantsStart == Cur.size())
|
|
break;
|
|
|
|
++VariantsStart; // Skip the '{'.
|
|
|
|
// Scan to the end of the variants string.
|
|
size_t VariantsEnd = VariantsStart;
|
|
unsigned NestedBraces = 1;
|
|
for (size_t e = Cur.size(); VariantsEnd != e; ++VariantsEnd) {
|
|
if (Cur[VariantsEnd] == '}' && Cur[VariantsEnd-1] != '\\') {
|
|
if (--NestedBraces == 0)
|
|
break;
|
|
} else if (Cur[VariantsEnd] == '{')
|
|
++NestedBraces;
|
|
}
|
|
|
|
// Select the Nth variant (or empty).
|
|
StringRef Selection = Cur.slice(VariantsStart, VariantsEnd);
|
|
for (unsigned i = 0; i != Variant; ++i)
|
|
Selection = Selection.split('|').second;
|
|
Res += Selection.split('|').first;
|
|
|
|
assert(VariantsEnd != Cur.size() &&
|
|
"Unterminated variants in assembly string!");
|
|
Cur = Cur.substr(VariantsEnd + 1);
|
|
}
|
|
|
|
return Res;
|
|
}
|
|
|
|
bool CodeGenInstruction::isOperandImpl(StringRef OpListName, unsigned i,
|
|
StringRef PropertyName) const {
|
|
DagInit *ConstraintList = TheDef->getValueAsDag(OpListName);
|
|
if (!ConstraintList || i >= ConstraintList->getNumArgs())
|
|
return false;
|
|
|
|
DefInit *Constraint = dyn_cast<DefInit>(ConstraintList->getArg(i));
|
|
if (!Constraint)
|
|
return false;
|
|
|
|
return Constraint->getDef()->isSubClassOf("TypedOperand") &&
|
|
Constraint->getDef()->getValueAsBit(PropertyName);
|
|
}
|