CodeGenInstruction.cpp revision f523e476c2e199220306b367b7bd834978fb93d6
1ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown//===- CodeGenInstruction.cpp - CodeGen Instruction Class Wrapper ---------===// 2ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown// 3ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown// The LLVM Compiler Infrastructure 4ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown// 5ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown// This file is distributed under the University of Illinois Open Source 6ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown// License. See LICENSE.TXT for details. 7ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown// 8ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown//===----------------------------------------------------------------------===// 9ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown// 10ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown// This file implements the CodeGenInstruction class. 11ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown// 12ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown//===----------------------------------------------------------------------===// 13ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 14ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown#include "CodeGenInstruction.h" 15ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown#include "CodeGenTarget.h" 16ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown#include "Record.h" 17ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown#include "llvm/ADT/StringExtras.h" 18ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown#include "llvm/ADT/STLExtras.h" 19ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown#include <set> 20ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brownusing namespace llvm; 21ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 22ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brownstatic void ParseConstraint(const std::string &CStr, CodeGenInstruction *I) { 23ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown // EARLY_CLOBBER: @early $reg 24ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown std::string::size_type wpos = CStr.find_first_of(" \t"); 25ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown std::string::size_type start = CStr.find_first_not_of(" \t"); 26ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown std::string Tok = CStr.substr(start, wpos - start); 27ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown if (Tok == "@earlyclobber") { 28ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown std::string Name = CStr.substr(wpos+1); 29ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown wpos = Name.find_first_not_of(" \t"); 30ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown if (wpos == std::string::npos) 31ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown throw "Illegal format for @earlyclobber constraint: '" + CStr + "'"; 32ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown Name = Name.substr(wpos); 33ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown std::pair<unsigned,unsigned> Op = 34ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown I->ParseOperandName(Name, false); 35ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 36ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown // Build the string for the operand 37ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown if (!I->OperandList[Op.first].Constraints[Op.second].isNone()) 38ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown throw "Operand '" + Name + "' cannot have multiple constraints!"; 39ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown I->OperandList[Op.first].Constraints[Op.second] = 40ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown CodeGenInstruction::ConstraintInfo::getEarlyClobber(); 41ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown return; 42ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown } 43ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 44ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown // Only other constraint is "TIED_TO" for now. 45ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown std::string::size_type pos = CStr.find_first_of('='); 46ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown assert(pos != std::string::npos && "Unrecognized constraint"); 47ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown start = CStr.find_first_not_of(" \t"); 48ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown std::string Name = CStr.substr(start, pos - start); 49ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 50ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown // TIED_TO: $src1 = $dst 51ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown wpos = Name.find_first_of(" \t"); 52ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown if (wpos == std::string::npos) 53ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown throw "Illegal format for tied-to constraint: '" + CStr + "'"; 54ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown std::string DestOpName = Name.substr(0, wpos); 55ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown std::pair<unsigned,unsigned> DestOp = I->ParseOperandName(DestOpName, false); 56ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 57ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown Name = CStr.substr(pos+1); 58ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown wpos = Name.find_first_not_of(" \t"); 59ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown if (wpos == std::string::npos) 60ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown throw "Illegal format for tied-to constraint: '" + CStr + "'"; 61ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 62ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown std::pair<unsigned,unsigned> SrcOp = 63ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown I->ParseOperandName(Name.substr(wpos), false); 64ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown if (SrcOp > DestOp) 65ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown throw "Illegal tied-to operand constraint '" + CStr + "'"; 66ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 67ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 68ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown unsigned FlatOpNo = I->getFlattenedOperandNumber(SrcOp); 69ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 70ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown if (!I->OperandList[DestOp.first].Constraints[DestOp.second].isNone()) 71ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown throw "Operand '" + DestOpName + "' cannot have multiple constraints!"; 72ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown I->OperandList[DestOp.first].Constraints[DestOp.second] = 73ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown CodeGenInstruction::ConstraintInfo::getTied(FlatOpNo); 74ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown} 75ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 76ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brownstatic void ParseConstraints(const std::string &CStr, CodeGenInstruction *I) { 77ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown // Make sure the constraints list for each operand is large enough to hold 78ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown // constraint info, even if none is present. 79ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown for (unsigned i = 0, e = I->OperandList.size(); i != e; ++i) 80ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown I->OperandList[i].Constraints.resize(I->OperandList[i].MINumOperands); 81ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 82ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown if (CStr.empty()) return; 83ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 84ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown const std::string delims(","); 85ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown std::string::size_type bidx, eidx; 86ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 87ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown bidx = CStr.find_first_not_of(delims); 88ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown while (bidx != std::string::npos) { 89ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown eidx = CStr.find_first_of(delims, bidx); 90ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown if (eidx == std::string::npos) 91ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown eidx = CStr.length(); 92ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 93ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown ParseConstraint(CStr.substr(bidx, eidx - bidx), I); 94ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown bidx = CStr.find_first_not_of(delims, eidx); 95ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown } 96ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown} 97ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 98ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff BrownCodeGenInstruction::CodeGenInstruction(Record *R, const std::string &AsmStr) 99ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown : TheDef(R), AsmString(AsmStr) { 100ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown Namespace = R->getValueAsString("Namespace"); 101ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 102ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown isReturn = R->getValueAsBit("isReturn"); 103ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown isBranch = R->getValueAsBit("isBranch"); 104ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown isIndirectBranch = R->getValueAsBit("isIndirectBranch"); 105ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown isCompare = R->getValueAsBit("isCompare"); 106ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown isBarrier = R->getValueAsBit("isBarrier"); 107ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown isCall = R->getValueAsBit("isCall"); 108ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown canFoldAsLoad = R->getValueAsBit("canFoldAsLoad"); 109ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown mayLoad = R->getValueAsBit("mayLoad"); 110ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown mayStore = R->getValueAsBit("mayStore"); 111ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown isPredicable = R->getValueAsBit("isPredicable"); 112ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown isConvertibleToThreeAddress = R->getValueAsBit("isConvertibleToThreeAddress"); 113ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown isCommutable = R->getValueAsBit("isCommutable"); 114ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown isTerminator = R->getValueAsBit("isTerminator"); 115ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown isReMaterializable = R->getValueAsBit("isReMaterializable"); 116ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown hasDelaySlot = R->getValueAsBit("hasDelaySlot"); 117ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown usesCustomInserter = R->getValueAsBit("usesCustomInserter"); 118ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown hasCtrlDep = R->getValueAsBit("hasCtrlDep"); 119ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown isNotDuplicable = R->getValueAsBit("isNotDuplicable"); 120ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown hasSideEffects = R->getValueAsBit("hasSideEffects"); 121ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown neverHasSideEffects = R->getValueAsBit("neverHasSideEffects"); 122ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown isAsCheapAsAMove = R->getValueAsBit("isAsCheapAsAMove"); 123ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown hasExtraSrcRegAllocReq = R->getValueAsBit("hasExtraSrcRegAllocReq"); 124ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown hasExtraDefRegAllocReq = R->getValueAsBit("hasExtraDefRegAllocReq"); 125ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown hasOptionalDef = false; 126ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown isVariadic = false; 127ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown ImplicitDefs = R->getValueAsListOfDefs("Defs"); 128ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown ImplicitUses = R->getValueAsListOfDefs("Uses"); 129ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 130ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown if (neverHasSideEffects + hasSideEffects > 1) 131ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown throw R->getName() + ": multiple conflicting side-effect flags set!"; 132ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 133ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown DagInit *OutDI = R->getValueAsDag("OutOperandList"); 134ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 135ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown if (DefInit *Init = dynamic_cast<DefInit*>(OutDI->getOperator())) { 136ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown if (Init->getDef()->getName() != "outs") 137ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown throw R->getName() + ": invalid def name for output list: use 'outs'"; 138ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown } else 139ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown throw R->getName() + ": invalid output list: use 'outs'"; 140ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 141ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown NumDefs = OutDI->getNumArgs(); 142ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 143ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown DagInit *InDI = R->getValueAsDag("InOperandList"); 144ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown if (DefInit *Init = dynamic_cast<DefInit*>(InDI->getOperator())) { 145ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown if (Init->getDef()->getName() != "ins") 146ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown throw R->getName() + ": invalid def name for input list: use 'ins'"; 147ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown } else 148ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown throw R->getName() + ": invalid input list: use 'ins'"; 149ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 150ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown unsigned MIOperandNo = 0; 151ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown std::set<std::string> OperandNames; 152ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown for (unsigned i = 0, e = InDI->getNumArgs()+OutDI->getNumArgs(); i != e; ++i){ 153ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown Init *ArgInit; 154ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown std::string ArgName; 155ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown if (i < NumDefs) { 156ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown ArgInit = OutDI->getArg(i); 157ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown ArgName = OutDI->getArgName(i); 158ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown } else { 159ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown ArgInit = InDI->getArg(i-NumDefs); 160ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown ArgName = InDI->getArgName(i-NumDefs); 161ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown } 162ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 163ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown DefInit *Arg = dynamic_cast<DefInit*>(ArgInit); 164ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown if (!Arg) 165ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown throw "Illegal operand for the '" + R->getName() + "' instruction!"; 166ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 167ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown Record *Rec = Arg->getDef(); 168ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown std::string PrintMethod = "printOperand"; 169ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown unsigned NumOps = 1; 170ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown DagInit *MIOpInfo = 0; 171ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown if (Rec->isSubClassOf("Operand")) { 172ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown PrintMethod = Rec->getValueAsString("PrintMethod"); 173ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown MIOpInfo = Rec->getValueAsDag("MIOperandInfo"); 174ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 175ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown // Verify that MIOpInfo has an 'ops' root value. 176ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown if (!dynamic_cast<DefInit*>(MIOpInfo->getOperator()) || 177ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown dynamic_cast<DefInit*>(MIOpInfo->getOperator()) 178ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown ->getDef()->getName() != "ops") 179ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown throw "Bad value for MIOperandInfo in operand '" + Rec->getName() + 180ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown "'\n"; 181ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 182ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown // If we have MIOpInfo, then we have #operands equal to number of entries 183ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown // in MIOperandInfo. 184ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown if (unsigned NumArgs = MIOpInfo->getNumArgs()) 185ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown NumOps = NumArgs; 186ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 187ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown if (Rec->isSubClassOf("PredicateOperand")) 188ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown isPredicable = true; 189ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown else if (Rec->isSubClassOf("OptionalDefOperand")) 190ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown hasOptionalDef = true; 191ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown } else if (Rec->getName() == "variable_ops") { 192ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown isVariadic = true; 193ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown continue; 194ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown } else if (!Rec->isSubClassOf("RegisterClass") && 195ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown Rec->getName() != "ptr_rc" && Rec->getName() != "unknown") 196ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown throw "Unknown operand class '" + Rec->getName() + 197ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown "' in '" + R->getName() + "' instruction!"; 198ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 199ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown // Check that the operand has a name and that it's unique. 200ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown if (ArgName.empty()) 201ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown throw "In instruction '" + R->getName() + "', operand #" + utostr(i) + 202ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown " has no name!"; 203ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown if (!OperandNames.insert(ArgName).second) 204ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown throw "In instruction '" + R->getName() + "', operand #" + utostr(i) + 205ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown " has the same name as a previous operand!"; 206ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 207ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown OperandList.push_back(OperandInfo(Rec, ArgName, PrintMethod, 208ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown MIOperandNo, NumOps, MIOpInfo)); 209ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown MIOperandNo += NumOps; 210ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown } 211ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 212ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown // Parse Constraints. 213ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown ParseConstraints(R->getValueAsString("Constraints"), this); 214ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 215ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown // Parse the DisableEncoding field. 216ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown std::string DisableEncoding = R->getValueAsString("DisableEncoding"); 217ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown while (1) { 218ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown std::string OpName; 219ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown tie(OpName, DisableEncoding) = getToken(DisableEncoding, " ,\t"); 220ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown if (OpName.empty()) break; 221ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 222ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown // Figure out which operand this is. 223ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown std::pair<unsigned,unsigned> Op = ParseOperandName(OpName, false); 224ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 225ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown // Mark the operand as not-to-be encoded. 226ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown if (Op.second >= OperandList[Op.first].DoNotEncode.size()) 227ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown OperandList[Op.first].DoNotEncode.resize(Op.second+1); 228ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown OperandList[Op.first].DoNotEncode[Op.second] = true; 229ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown } 230ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown} 231ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 232ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown/// getOperandNamed - Return the index of the operand with the specified 233ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown/// non-empty name. If the instruction does not have an operand with the 234ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown/// specified name, throw an exception. 235ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown/// 236ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brownunsigned CodeGenInstruction::getOperandNamed(const std::string &Name) const { 237ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown assert(!Name.empty() && "Cannot search for operand with no name!"); 238ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown for (unsigned i = 0, e = OperandList.size(); i != e; ++i) 239ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown if (OperandList[i].Name == Name) return i; 240ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown throw "Instruction '" + TheDef->getName() + 241ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown "' does not have an operand named '$" + Name + "'!"; 242ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown} 243ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 244ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brownstd::pair<unsigned,unsigned> 245ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff BrownCodeGenInstruction::ParseOperandName(const std::string &Op, 246ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown bool AllowWholeOp) { 247ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown if (Op.empty() || Op[0] != '$') 248ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown throw TheDef->getName() + ": Illegal operand name: '" + Op + "'"; 249ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 250ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown std::string OpName = Op.substr(1); 251ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown std::string SubOpName; 252ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 253ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown // Check to see if this is $foo.bar. 254ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown std::string::size_type DotIdx = OpName.find_first_of("."); 255ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown if (DotIdx != std::string::npos) { 256ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown SubOpName = OpName.substr(DotIdx+1); 257ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown if (SubOpName.empty()) 258ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown throw TheDef->getName() + ": illegal empty suboperand name in '" +Op +"'"; 259ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown OpName = OpName.substr(0, DotIdx); 260ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown } 261ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 262ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown unsigned OpIdx = getOperandNamed(OpName); 263ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 264ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown if (SubOpName.empty()) { // If no suboperand name was specified: 265ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown // If one was needed, throw. 266ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown if (OperandList[OpIdx].MINumOperands > 1 && !AllowWholeOp && 267ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown SubOpName.empty()) 268ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown throw TheDef->getName() + ": Illegal to refer to" 269ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown " whole operand part of complex operand '" + Op + "'"; 270ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown 271ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown // Otherwise, return the operand. 272ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown return std::make_pair(OpIdx, 0U); 273ed07e00d438c74b7a23c01bfffde77e3968305e4Jeff Brown } 274 275 // Find the suboperand number involved. 276 DagInit *MIOpInfo = OperandList[OpIdx].MIOperandInfo; 277 if (MIOpInfo == 0) 278 throw TheDef->getName() + ": unknown suboperand name in '" + Op + "'"; 279 280 // Find the operand with the right name. 281 for (unsigned i = 0, e = MIOpInfo->getNumArgs(); i != e; ++i) 282 if (MIOpInfo->getArgName(i) == SubOpName) 283 return std::make_pair(OpIdx, i); 284 285 // Otherwise, didn't find it! 286 throw TheDef->getName() + ": unknown suboperand name in '" + Op + "'"; 287} 288 289 290/// HasOneImplicitDefWithKnownVT - If the instruction has at least one 291/// implicit def and it has a known VT, return the VT, otherwise return 292/// MVT::Other. 293MVT::SimpleValueType CodeGenInstruction:: 294HasOneImplicitDefWithKnownVT(const CodeGenTarget &TargetInfo) const { 295 if (ImplicitDefs.empty()) return MVT::Other; 296 297 // Check to see if the first implicit def has a resolvable type. 298 Record *FirstImplicitDef = ImplicitDefs[0]; 299 assert(FirstImplicitDef->isSubClassOf("Register")); 300 const std::vector<MVT::SimpleValueType> &RegVTs = 301 TargetInfo.getRegisterVTs(FirstImplicitDef); 302 if (RegVTs.size() == 1) 303 return RegVTs[0]; 304 return MVT::Other; 305} 306 307