Chris Lattner | ea2d52d | 2008-01-06 01:35:39 +0000 | [diff] [blame] | 1 | //===- CodeGenInstruction.cpp - CodeGen Instruction Class Wrapper ---------===// |
| 2 | // |
| 3 | // The LLVM Compiler Infrastructure |
| 4 | // |
| 5 | // This file is distributed under the University of Illinois Open Source |
| 6 | // License. See LICENSE.TXT for details. |
| 7 | // |
| 8 | //===----------------------------------------------------------------------===// |
| 9 | // |
| 10 | // This file implements the CodeGenInstruction class. |
| 11 | // |
| 12 | //===----------------------------------------------------------------------===// |
| 13 | |
| 14 | #include "CodeGenInstruction.h" |
Chris Lattner | 7bc5d9b | 2010-03-27 20:09:24 +0000 | [diff] [blame] | 15 | #include "CodeGenTarget.h" |
Chandler Carruth | 91d19d8 | 2012-12-04 10:37:14 +0000 | [diff] [blame] | 16 | #include "llvm/ADT/STLExtras.h" |
Chris Lattner | ea2d52d | 2008-01-06 01:35:39 +0000 | [diff] [blame] | 17 | #include "llvm/ADT/StringExtras.h" |
Chris Lattner | b625dd2 | 2010-11-06 07:06:09 +0000 | [diff] [blame] | 18 | #include "llvm/ADT/StringMap.h" |
Chandler Carruth | 91d19d8 | 2012-12-04 10:37:14 +0000 | [diff] [blame] | 19 | #include "llvm/TableGen/Error.h" |
| 20 | #include "llvm/TableGen/Record.h" |
Chris Lattner | ea2d52d | 2008-01-06 01:35:39 +0000 | [diff] [blame] | 21 | #include <set> |
| 22 | using namespace llvm; |
| 23 | |
Chris Lattner | d8adec7 | 2010-11-01 04:03:32 +0000 | [diff] [blame] | 24 | //===----------------------------------------------------------------------===// |
| 25 | // CGIOperandList Implementation |
| 26 | //===----------------------------------------------------------------------===// |
Jim Grosbach | 2a282f2 | 2009-12-16 19:43:02 +0000 | [diff] [blame] | 27 | |
Chris Lattner | d8adec7 | 2010-11-01 04:03:32 +0000 | [diff] [blame] | 28 | CGIOperandList::CGIOperandList(Record *R) : TheDef(R) { |
| 29 | isPredicable = false; |
Chris Lattner | ea2d52d | 2008-01-06 01:35:39 +0000 | [diff] [blame] | 30 | hasOptionalDef = false; |
Chris Lattner | f376c99 | 2008-01-07 05:19:29 +0000 | [diff] [blame] | 31 | isVariadic = false; |
NAKAMURA Takumi | 9d29eff | 2011-01-26 02:03:37 +0000 | [diff] [blame] | 32 | |
David Greene | af8ee2c | 2011-07-29 22:43:06 +0000 | [diff] [blame] | 33 | DagInit *OutDI = R->getValueAsDag("OutOperandList"); |
NAKAMURA Takumi | 9d29eff | 2011-01-26 02:03:37 +0000 | [diff] [blame] | 34 | |
Sean Silva | fb509ed | 2012-10-10 20:24:43 +0000 | [diff] [blame] | 35 | if (DefInit *Init = dyn_cast<DefInit>(OutDI->getOperator())) { |
Chris Lattner | 0f03747 | 2010-03-18 20:56:35 +0000 | [diff] [blame] | 36 | if (Init->getDef()->getName() != "outs") |
Joerg Sonnenberger | 635debe | 2012-10-25 20:33:17 +0000 | [diff] [blame] | 37 | PrintFatalError(R->getName() + ": invalid def name for output list: use 'outs'"); |
Chris Lattner | 5f418ea | 2010-03-18 20:50:52 +0000 | [diff] [blame] | 38 | } else |
Joerg Sonnenberger | 635debe | 2012-10-25 20:33:17 +0000 | [diff] [blame] | 39 | PrintFatalError(R->getName() + ": invalid output list: use 'outs'"); |
NAKAMURA Takumi | 9d29eff | 2011-01-26 02:03:37 +0000 | [diff] [blame] | 40 | |
Chris Lattner | 1f22d27 | 2010-03-18 21:07:39 +0000 | [diff] [blame] | 41 | NumDefs = OutDI->getNumArgs(); |
Chris Lattner | d8adec7 | 2010-11-01 04:03:32 +0000 | [diff] [blame] | 42 | |
David Greene | af8ee2c | 2011-07-29 22:43:06 +0000 | [diff] [blame] | 43 | DagInit *InDI = R->getValueAsDag("InOperandList"); |
Sean Silva | fb509ed | 2012-10-10 20:24:43 +0000 | [diff] [blame] | 44 | if (DefInit *Init = dyn_cast<DefInit>(InDI->getOperator())) { |
Chris Lattner | 0f03747 | 2010-03-18 20:56:35 +0000 | [diff] [blame] | 45 | if (Init->getDef()->getName() != "ins") |
Joerg Sonnenberger | 635debe | 2012-10-25 20:33:17 +0000 | [diff] [blame] | 46 | PrintFatalError(R->getName() + ": invalid def name for input list: use 'ins'"); |
Chris Lattner | 5f418ea | 2010-03-18 20:50:52 +0000 | [diff] [blame] | 47 | } else |
Joerg Sonnenberger | 635debe | 2012-10-25 20:33:17 +0000 | [diff] [blame] | 48 | PrintFatalError(R->getName() + ": invalid input list: use 'ins'"); |
NAKAMURA Takumi | 9d29eff | 2011-01-26 02:03:37 +0000 | [diff] [blame] | 49 | |
Chris Lattner | ea2d52d | 2008-01-06 01:35:39 +0000 | [diff] [blame] | 50 | unsigned MIOperandNo = 0; |
| 51 | std::set<std::string> OperandNames; |
Chris Lattner | 1f22d27 | 2010-03-18 21:07:39 +0000 | [diff] [blame] | 52 | for (unsigned i = 0, e = InDI->getNumArgs()+OutDI->getNumArgs(); i != e; ++i){ |
David Greene | af8ee2c | 2011-07-29 22:43:06 +0000 | [diff] [blame] | 53 | Init *ArgInit; |
Chris Lattner | 1f22d27 | 2010-03-18 21:07:39 +0000 | [diff] [blame] | 54 | std::string ArgName; |
| 55 | if (i < NumDefs) { |
| 56 | ArgInit = OutDI->getArg(i); |
| 57 | ArgName = OutDI->getArgName(i); |
| 58 | } else { |
| 59 | ArgInit = InDI->getArg(i-NumDefs); |
| 60 | ArgName = InDI->getArgName(i-NumDefs); |
| 61 | } |
NAKAMURA Takumi | 9d29eff | 2011-01-26 02:03:37 +0000 | [diff] [blame] | 62 | |
Sean Silva | fb509ed | 2012-10-10 20:24:43 +0000 | [diff] [blame] | 63 | DefInit *Arg = dyn_cast<DefInit>(ArgInit); |
Chris Lattner | ea2d52d | 2008-01-06 01:35:39 +0000 | [diff] [blame] | 64 | if (!Arg) |
Joerg Sonnenberger | 635debe | 2012-10-25 20:33:17 +0000 | [diff] [blame] | 65 | PrintFatalError("Illegal operand for the '" + R->getName() + "' instruction!"); |
NAKAMURA Takumi | 9d29eff | 2011-01-26 02:03:37 +0000 | [diff] [blame] | 66 | |
Chris Lattner | ea2d52d | 2008-01-06 01:35:39 +0000 | [diff] [blame] | 67 | Record *Rec = Arg->getDef(); |
| 68 | std::string PrintMethod = "printOperand"; |
Jim Grosbach | 51a12eb | 2010-10-12 22:21:57 +0000 | [diff] [blame] | 69 | std::string EncoderMethod; |
Benjamin Kramer | c8dc46b | 2011-07-14 21:47:18 +0000 | [diff] [blame] | 70 | std::string OperandType = "OPERAND_UNKNOWN"; |
Chris Lattner | ea2d52d | 2008-01-06 01:35:39 +0000 | [diff] [blame] | 71 | unsigned NumOps = 1; |
Craig Topper | 2406477 | 2014-04-15 07:20:03 +0000 | [diff] [blame] | 72 | DagInit *MIOpInfo = nullptr; |
Owen Anderson | a84be6c | 2011-06-27 21:06:21 +0000 | [diff] [blame] | 73 | if (Rec->isSubClassOf("RegisterOperand")) { |
| 74 | PrintMethod = Rec->getValueAsString("PrintMethod"); |
| 75 | } else if (Rec->isSubClassOf("Operand")) { |
Chris Lattner | ea2d52d | 2008-01-06 01:35:39 +0000 | [diff] [blame] | 76 | PrintMethod = Rec->getValueAsString("PrintMethod"); |
Benjamin Kramer | c8dc46b | 2011-07-14 21:47:18 +0000 | [diff] [blame] | 77 | OperandType = Rec->getValueAsString("OperandType"); |
Jim Grosbach | 51a12eb | 2010-10-12 22:21:57 +0000 | [diff] [blame] | 78 | // If there is an explicit encoder method, use it. |
Chris Lattner | 63274cb | 2010-11-15 05:19:05 +0000 | [diff] [blame] | 79 | EncoderMethod = Rec->getValueAsString("EncoderMethod"); |
Chris Lattner | ea2d52d | 2008-01-06 01:35:39 +0000 | [diff] [blame] | 80 | MIOpInfo = Rec->getValueAsDag("MIOperandInfo"); |
NAKAMURA Takumi | 9d29eff | 2011-01-26 02:03:37 +0000 | [diff] [blame] | 81 | |
Chris Lattner | ea2d52d | 2008-01-06 01:35:39 +0000 | [diff] [blame] | 82 | // Verify that MIOpInfo has an 'ops' root value. |
Sean Silva | 88eb8dd | 2012-10-10 20:24:47 +0000 | [diff] [blame] | 83 | if (!isa<DefInit>(MIOpInfo->getOperator()) || |
| 84 | cast<DefInit>(MIOpInfo->getOperator())->getDef()->getName() != "ops") |
Joerg Sonnenberger | 635debe | 2012-10-25 20:33:17 +0000 | [diff] [blame] | 85 | PrintFatalError("Bad value for MIOperandInfo in operand '" + Rec->getName() + |
| 86 | "'\n"); |
NAKAMURA Takumi | 9d29eff | 2011-01-26 02:03:37 +0000 | [diff] [blame] | 87 | |
Chris Lattner | ea2d52d | 2008-01-06 01:35:39 +0000 | [diff] [blame] | 88 | // If we have MIOpInfo, then we have #operands equal to number of entries |
| 89 | // in MIOperandInfo. |
| 90 | if (unsigned NumArgs = MIOpInfo->getNumArgs()) |
| 91 | NumOps = NumArgs; |
NAKAMURA Takumi | 9d29eff | 2011-01-26 02:03:37 +0000 | [diff] [blame] | 92 | |
Tim Northover | 4218044 | 2013-08-22 09:57:11 +0000 | [diff] [blame] | 93 | if (Rec->isSubClassOf("PredicateOp")) |
Chris Lattner | ea2d52d | 2008-01-06 01:35:39 +0000 | [diff] [blame] | 94 | isPredicable = true; |
| 95 | else if (Rec->isSubClassOf("OptionalDefOperand")) |
| 96 | hasOptionalDef = true; |
| 97 | } else if (Rec->getName() == "variable_ops") { |
Chris Lattner | f376c99 | 2008-01-07 05:19:29 +0000 | [diff] [blame] | 98 | isVariadic = true; |
Chris Lattner | ea2d52d | 2008-01-06 01:35:39 +0000 | [diff] [blame] | 99 | continue; |
Benjamin Kramer | c8dc46b | 2011-07-14 21:47:18 +0000 | [diff] [blame] | 100 | } else if (Rec->isSubClassOf("RegisterClass")) { |
| 101 | OperandType = "OPERAND_REGISTER"; |
| 102 | } else if (!Rec->isSubClassOf("PointerLikeRegClass") && |
Owen Anderson | 16ba4b2 | 2012-09-11 23:47:08 +0000 | [diff] [blame] | 103 | !Rec->isSubClassOf("unknown_class")) |
Joerg Sonnenberger | 635debe | 2012-10-25 20:33:17 +0000 | [diff] [blame] | 104 | PrintFatalError("Unknown operand class '" + Rec->getName() + |
| 105 | "' in '" + R->getName() + "' instruction!"); |
NAKAMURA Takumi | 9d29eff | 2011-01-26 02:03:37 +0000 | [diff] [blame] | 106 | |
Chris Lattner | ea2d52d | 2008-01-06 01:35:39 +0000 | [diff] [blame] | 107 | // Check that the operand has a name and that it's unique. |
Chris Lattner | 1f22d27 | 2010-03-18 21:07:39 +0000 | [diff] [blame] | 108 | if (ArgName.empty()) |
Benjamin Kramer | 48e7e85 | 2014-03-29 17:17:15 +0000 | [diff] [blame] | 109 | PrintFatalError("In instruction '" + R->getName() + "', operand #" + |
| 110 | Twine(i) + " has no name!"); |
Chris Lattner | 1f22d27 | 2010-03-18 21:07:39 +0000 | [diff] [blame] | 111 | if (!OperandNames.insert(ArgName).second) |
Benjamin Kramer | 48e7e85 | 2014-03-29 17:17:15 +0000 | [diff] [blame] | 112 | PrintFatalError("In instruction '" + R->getName() + "', operand #" + |
| 113 | Twine(i) + " has the same name as a previous operand!"); |
NAKAMURA Takumi | 9d29eff | 2011-01-26 02:03:37 +0000 | [diff] [blame] | 114 | |
Jim Grosbach | 51a12eb | 2010-10-12 22:21:57 +0000 | [diff] [blame] | 115 | OperandList.push_back(OperandInfo(Rec, ArgName, PrintMethod, EncoderMethod, |
Benjamin Kramer | c8dc46b | 2011-07-14 21:47:18 +0000 | [diff] [blame] | 116 | OperandType, MIOperandNo, NumOps, |
| 117 | MIOpInfo)); |
Chris Lattner | ea2d52d | 2008-01-06 01:35:39 +0000 | [diff] [blame] | 118 | MIOperandNo += NumOps; |
| 119 | } |
NAKAMURA Takumi | 9d29eff | 2011-01-26 02:03:37 +0000 | [diff] [blame] | 120 | |
| 121 | |
Chris Lattner | dd3b09c | 2010-11-01 05:34:34 +0000 | [diff] [blame] | 122 | // Make sure the constraints list for each operand is large enough to hold |
| 123 | // constraint info, even if none is present. |
| 124 | for (unsigned i = 0, e = OperandList.size(); i != e; ++i) |
| 125 | OperandList[i].Constraints.resize(OperandList[i].MINumOperands); |
Chris Lattner | ea2d52d | 2008-01-06 01:35:39 +0000 | [diff] [blame] | 126 | } |
| 127 | |
Chris Lattner | d8adec7 | 2010-11-01 04:03:32 +0000 | [diff] [blame] | 128 | |
Chris Lattner | ea2d52d | 2008-01-06 01:35:39 +0000 | [diff] [blame] | 129 | /// getOperandNamed - Return the index of the operand with the specified |
| 130 | /// non-empty name. If the instruction does not have an operand with the |
Joerg Sonnenberger | 635debe | 2012-10-25 20:33:17 +0000 | [diff] [blame] | 131 | /// specified name, abort. |
Chris Lattner | ea2d52d | 2008-01-06 01:35:39 +0000 | [diff] [blame] | 132 | /// |
Chris Lattner | d8adec7 | 2010-11-01 04:03:32 +0000 | [diff] [blame] | 133 | unsigned CGIOperandList::getOperandNamed(StringRef Name) const { |
Jim Grosbach | 191ad7c | 2010-10-11 18:25:51 +0000 | [diff] [blame] | 134 | unsigned OpIdx; |
| 135 | if (hasOperandNamed(Name, OpIdx)) return OpIdx; |
Benjamin Kramer | 48e7e85 | 2014-03-29 17:17:15 +0000 | [diff] [blame] | 136 | PrintFatalError("'" + TheDef->getName() + |
| 137 | "' does not have an operand named '$" + Name + "'!"); |
Chris Lattner | ea2d52d | 2008-01-06 01:35:39 +0000 | [diff] [blame] | 138 | } |
| 139 | |
Jim Grosbach | 191ad7c | 2010-10-11 18:25:51 +0000 | [diff] [blame] | 140 | /// hasOperandNamed - Query whether the instruction has an operand of the |
| 141 | /// given name. If so, return true and set OpIdx to the index of the |
| 142 | /// operand. Otherwise, return false. |
Chris Lattner | d8adec7 | 2010-11-01 04:03:32 +0000 | [diff] [blame] | 143 | bool CGIOperandList::hasOperandNamed(StringRef Name, unsigned &OpIdx) const { |
Jim Grosbach | 191ad7c | 2010-10-11 18:25:51 +0000 | [diff] [blame] | 144 | assert(!Name.empty() && "Cannot search for operand with no name!"); |
| 145 | for (unsigned i = 0, e = OperandList.size(); i != e; ++i) |
| 146 | if (OperandList[i].Name == Name) { |
| 147 | OpIdx = i; |
| 148 | return true; |
| 149 | } |
| 150 | return false; |
| 151 | } |
| 152 | |
Jim Grosbach | 38c4f4b | 2009-12-15 19:28:13 +0000 | [diff] [blame] | 153 | std::pair<unsigned,unsigned> |
Chris Lattner | d8adec7 | 2010-11-01 04:03:32 +0000 | [diff] [blame] | 154 | CGIOperandList::ParseOperandName(const std::string &Op, bool AllowWholeOp) { |
Chris Lattner | ea2d52d | 2008-01-06 01:35:39 +0000 | [diff] [blame] | 155 | if (Op.empty() || Op[0] != '$') |
Joerg Sonnenberger | 635debe | 2012-10-25 20:33:17 +0000 | [diff] [blame] | 156 | PrintFatalError(TheDef->getName() + ": Illegal operand name: '" + Op + "'"); |
NAKAMURA Takumi | 9d29eff | 2011-01-26 02:03:37 +0000 | [diff] [blame] | 157 | |
Chris Lattner | ea2d52d | 2008-01-06 01:35:39 +0000 | [diff] [blame] | 158 | std::string OpName = Op.substr(1); |
| 159 | std::string SubOpName; |
NAKAMURA Takumi | 9d29eff | 2011-01-26 02:03:37 +0000 | [diff] [blame] | 160 | |
Chris Lattner | ea2d52d | 2008-01-06 01:35:39 +0000 | [diff] [blame] | 161 | // Check to see if this is $foo.bar. |
| 162 | std::string::size_type DotIdx = OpName.find_first_of("."); |
| 163 | if (DotIdx != std::string::npos) { |
| 164 | SubOpName = OpName.substr(DotIdx+1); |
| 165 | if (SubOpName.empty()) |
Joerg Sonnenberger | 635debe | 2012-10-25 20:33:17 +0000 | [diff] [blame] | 166 | PrintFatalError(TheDef->getName() + ": illegal empty suboperand name in '" +Op +"'"); |
Chris Lattner | ea2d52d | 2008-01-06 01:35:39 +0000 | [diff] [blame] | 167 | OpName = OpName.substr(0, DotIdx); |
| 168 | } |
NAKAMURA Takumi | 9d29eff | 2011-01-26 02:03:37 +0000 | [diff] [blame] | 169 | |
Chris Lattner | ea2d52d | 2008-01-06 01:35:39 +0000 | [diff] [blame] | 170 | unsigned OpIdx = getOperandNamed(OpName); |
NAKAMURA Takumi | 9d29eff | 2011-01-26 02:03:37 +0000 | [diff] [blame] | 171 | |
Chris Lattner | ea2d52d | 2008-01-06 01:35:39 +0000 | [diff] [blame] | 172 | if (SubOpName.empty()) { // If no suboperand name was specified: |
| 173 | // If one was needed, throw. |
| 174 | if (OperandList[OpIdx].MINumOperands > 1 && !AllowWholeOp && |
| 175 | SubOpName.empty()) |
Joerg Sonnenberger | 635debe | 2012-10-25 20:33:17 +0000 | [diff] [blame] | 176 | PrintFatalError(TheDef->getName() + ": Illegal to refer to" |
| 177 | " whole operand part of complex operand '" + Op + "'"); |
NAKAMURA Takumi | 9d29eff | 2011-01-26 02:03:37 +0000 | [diff] [blame] | 178 | |
Chris Lattner | ea2d52d | 2008-01-06 01:35:39 +0000 | [diff] [blame] | 179 | // Otherwise, return the operand. |
| 180 | return std::make_pair(OpIdx, 0U); |
| 181 | } |
NAKAMURA Takumi | 9d29eff | 2011-01-26 02:03:37 +0000 | [diff] [blame] | 182 | |
Chris Lattner | ea2d52d | 2008-01-06 01:35:39 +0000 | [diff] [blame] | 183 | // Find the suboperand number involved. |
David Greene | af8ee2c | 2011-07-29 22:43:06 +0000 | [diff] [blame] | 184 | DagInit *MIOpInfo = OperandList[OpIdx].MIOperandInfo; |
Craig Topper | 2406477 | 2014-04-15 07:20:03 +0000 | [diff] [blame] | 185 | if (!MIOpInfo) |
Joerg Sonnenberger | 635debe | 2012-10-25 20:33:17 +0000 | [diff] [blame] | 186 | PrintFatalError(TheDef->getName() + ": unknown suboperand name in '" + Op + "'"); |
NAKAMURA Takumi | 9d29eff | 2011-01-26 02:03:37 +0000 | [diff] [blame] | 187 | |
Chris Lattner | ea2d52d | 2008-01-06 01:35:39 +0000 | [diff] [blame] | 188 | // Find the operand with the right name. |
| 189 | for (unsigned i = 0, e = MIOpInfo->getNumArgs(); i != e; ++i) |
| 190 | if (MIOpInfo->getArgName(i) == SubOpName) |
| 191 | return std::make_pair(OpIdx, i); |
NAKAMURA Takumi | 9d29eff | 2011-01-26 02:03:37 +0000 | [diff] [blame] | 192 | |
Chris Lattner | ea2d52d | 2008-01-06 01:35:39 +0000 | [diff] [blame] | 193 | // Otherwise, didn't find it! |
Joerg Sonnenberger | 635debe | 2012-10-25 20:33:17 +0000 | [diff] [blame] | 194 | PrintFatalError(TheDef->getName() + ": unknown suboperand name in '" + Op + "'"); |
Aaron Ballman | 414a0cd | 2013-08-16 01:43:31 +0000 | [diff] [blame] | 195 | return std::make_pair(0U, 0U); |
Chris Lattner | ea2d52d | 2008-01-06 01:35:39 +0000 | [diff] [blame] | 196 | } |
Chris Lattner | 7bc5d9b | 2010-03-27 20:09:24 +0000 | [diff] [blame] | 197 | |
Chris Lattner | d8adec7 | 2010-11-01 04:03:32 +0000 | [diff] [blame] | 198 | static void ParseConstraint(const std::string &CStr, CGIOperandList &Ops) { |
| 199 | // EARLY_CLOBBER: @early $reg |
| 200 | std::string::size_type wpos = CStr.find_first_of(" \t"); |
| 201 | std::string::size_type start = CStr.find_first_not_of(" \t"); |
| 202 | std::string Tok = CStr.substr(start, wpos - start); |
| 203 | if (Tok == "@earlyclobber") { |
| 204 | std::string Name = CStr.substr(wpos+1); |
| 205 | wpos = Name.find_first_not_of(" \t"); |
| 206 | if (wpos == std::string::npos) |
Joerg Sonnenberger | 635debe | 2012-10-25 20:33:17 +0000 | [diff] [blame] | 207 | PrintFatalError("Illegal format for @earlyclobber constraint: '" + CStr + "'"); |
Chris Lattner | d8adec7 | 2010-11-01 04:03:32 +0000 | [diff] [blame] | 208 | Name = Name.substr(wpos); |
| 209 | std::pair<unsigned,unsigned> Op = Ops.ParseOperandName(Name, false); |
NAKAMURA Takumi | 9d29eff | 2011-01-26 02:03:37 +0000 | [diff] [blame] | 210 | |
Chris Lattner | d8adec7 | 2010-11-01 04:03:32 +0000 | [diff] [blame] | 211 | // Build the string for the operand |
| 212 | if (!Ops[Op.first].Constraints[Op.second].isNone()) |
Joerg Sonnenberger | 635debe | 2012-10-25 20:33:17 +0000 | [diff] [blame] | 213 | PrintFatalError("Operand '" + Name + "' cannot have multiple constraints!"); |
Chris Lattner | d8adec7 | 2010-11-01 04:03:32 +0000 | [diff] [blame] | 214 | Ops[Op.first].Constraints[Op.second] = |
| 215 | CGIOperandList::ConstraintInfo::getEarlyClobber(); |
| 216 | return; |
| 217 | } |
NAKAMURA Takumi | 9d29eff | 2011-01-26 02:03:37 +0000 | [diff] [blame] | 218 | |
Chris Lattner | d8adec7 | 2010-11-01 04:03:32 +0000 | [diff] [blame] | 219 | // Only other constraint is "TIED_TO" for now. |
| 220 | std::string::size_type pos = CStr.find_first_of('='); |
| 221 | assert(pos != std::string::npos && "Unrecognized constraint"); |
| 222 | start = CStr.find_first_not_of(" \t"); |
| 223 | std::string Name = CStr.substr(start, pos - start); |
NAKAMURA Takumi | 9d29eff | 2011-01-26 02:03:37 +0000 | [diff] [blame] | 224 | |
Chris Lattner | d8adec7 | 2010-11-01 04:03:32 +0000 | [diff] [blame] | 225 | // TIED_TO: $src1 = $dst |
| 226 | wpos = Name.find_first_of(" \t"); |
| 227 | if (wpos == std::string::npos) |
Joerg Sonnenberger | 635debe | 2012-10-25 20:33:17 +0000 | [diff] [blame] | 228 | PrintFatalError("Illegal format for tied-to constraint: '" + CStr + "'"); |
Chris Lattner | d8adec7 | 2010-11-01 04:03:32 +0000 | [diff] [blame] | 229 | std::string DestOpName = Name.substr(0, wpos); |
| 230 | std::pair<unsigned,unsigned> DestOp = Ops.ParseOperandName(DestOpName, false); |
NAKAMURA Takumi | 9d29eff | 2011-01-26 02:03:37 +0000 | [diff] [blame] | 231 | |
Chris Lattner | d8adec7 | 2010-11-01 04:03:32 +0000 | [diff] [blame] | 232 | Name = CStr.substr(pos+1); |
| 233 | wpos = Name.find_first_not_of(" \t"); |
| 234 | if (wpos == std::string::npos) |
Joerg Sonnenberger | 635debe | 2012-10-25 20:33:17 +0000 | [diff] [blame] | 235 | PrintFatalError("Illegal format for tied-to constraint: '" + CStr + "'"); |
NAKAMURA Takumi | 9d29eff | 2011-01-26 02:03:37 +0000 | [diff] [blame] | 236 | |
Lang Hames | cdd40bd | 2012-10-20 22:44:13 +0000 | [diff] [blame] | 237 | std::string SrcOpName = Name.substr(wpos); |
| 238 | std::pair<unsigned,unsigned> SrcOp = Ops.ParseOperandName(SrcOpName, false); |
| 239 | if (SrcOp > DestOp) { |
| 240 | std::swap(SrcOp, DestOp); |
| 241 | std::swap(SrcOpName, DestOpName); |
| 242 | } |
NAKAMURA Takumi | 9d29eff | 2011-01-26 02:03:37 +0000 | [diff] [blame] | 243 | |
Chris Lattner | d8adec7 | 2010-11-01 04:03:32 +0000 | [diff] [blame] | 244 | unsigned FlatOpNo = Ops.getFlattenedOperandNumber(SrcOp); |
NAKAMURA Takumi | 9d29eff | 2011-01-26 02:03:37 +0000 | [diff] [blame] | 245 | |
Chris Lattner | d8adec7 | 2010-11-01 04:03:32 +0000 | [diff] [blame] | 246 | if (!Ops[DestOp.first].Constraints[DestOp.second].isNone()) |
Joerg Sonnenberger | 635debe | 2012-10-25 20:33:17 +0000 | [diff] [blame] | 247 | PrintFatalError("Operand '" + DestOpName + |
| 248 | "' cannot have multiple constraints!"); |
Chris Lattner | d8adec7 | 2010-11-01 04:03:32 +0000 | [diff] [blame] | 249 | Ops[DestOp.first].Constraints[DestOp.second] = |
Jim Grosbach | 7b03fbd | 2011-11-15 01:05:12 +0000 | [diff] [blame] | 250 | CGIOperandList::ConstraintInfo::getTied(FlatOpNo); |
Chris Lattner | d8adec7 | 2010-11-01 04:03:32 +0000 | [diff] [blame] | 251 | } |
| 252 | |
| 253 | static void ParseConstraints(const std::string &CStr, CGIOperandList &Ops) { |
Chris Lattner | d8adec7 | 2010-11-01 04:03:32 +0000 | [diff] [blame] | 254 | if (CStr.empty()) return; |
NAKAMURA Takumi | 9d29eff | 2011-01-26 02:03:37 +0000 | [diff] [blame] | 255 | |
Chris Lattner | d8adec7 | 2010-11-01 04:03:32 +0000 | [diff] [blame] | 256 | const std::string delims(","); |
| 257 | std::string::size_type bidx, eidx; |
NAKAMURA Takumi | 9d29eff | 2011-01-26 02:03:37 +0000 | [diff] [blame] | 258 | |
Chris Lattner | d8adec7 | 2010-11-01 04:03:32 +0000 | [diff] [blame] | 259 | bidx = CStr.find_first_not_of(delims); |
| 260 | while (bidx != std::string::npos) { |
| 261 | eidx = CStr.find_first_of(delims, bidx); |
| 262 | if (eidx == std::string::npos) |
| 263 | eidx = CStr.length(); |
NAKAMURA Takumi | 9d29eff | 2011-01-26 02:03:37 +0000 | [diff] [blame] | 264 | |
Chris Lattner | d8adec7 | 2010-11-01 04:03:32 +0000 | [diff] [blame] | 265 | ParseConstraint(CStr.substr(bidx, eidx - bidx), Ops); |
| 266 | bidx = CStr.find_first_not_of(delims, eidx); |
| 267 | } |
| 268 | } |
| 269 | |
| 270 | void CGIOperandList::ProcessDisableEncoding(std::string DisableEncoding) { |
| 271 | while (1) { |
Chris Lattner | 5cf753c | 2011-07-21 06:21:31 +0000 | [diff] [blame] | 272 | std::pair<StringRef, StringRef> P = getToken(DisableEncoding, " ,\t"); |
| 273 | std::string OpName = P.first; |
| 274 | DisableEncoding = P.second; |
Chris Lattner | d8adec7 | 2010-11-01 04:03:32 +0000 | [diff] [blame] | 275 | if (OpName.empty()) break; |
NAKAMURA Takumi | 9d29eff | 2011-01-26 02:03:37 +0000 | [diff] [blame] | 276 | |
Chris Lattner | d8adec7 | 2010-11-01 04:03:32 +0000 | [diff] [blame] | 277 | // Figure out which operand this is. |
| 278 | std::pair<unsigned,unsigned> Op = ParseOperandName(OpName, false); |
NAKAMURA Takumi | 9d29eff | 2011-01-26 02:03:37 +0000 | [diff] [blame] | 279 | |
Chris Lattner | d8adec7 | 2010-11-01 04:03:32 +0000 | [diff] [blame] | 280 | // Mark the operand as not-to-be encoded. |
| 281 | if (Op.second >= OperandList[Op.first].DoNotEncode.size()) |
| 282 | OperandList[Op.first].DoNotEncode.resize(Op.second+1); |
| 283 | OperandList[Op.first].DoNotEncode[Op.second] = true; |
| 284 | } |
NAKAMURA Takumi | 9d29eff | 2011-01-26 02:03:37 +0000 | [diff] [blame] | 285 | |
Chris Lattner | d8adec7 | 2010-11-01 04:03:32 +0000 | [diff] [blame] | 286 | } |
| 287 | |
| 288 | //===----------------------------------------------------------------------===// |
| 289 | // CodeGenInstruction Implementation |
| 290 | //===----------------------------------------------------------------------===// |
| 291 | |
Jakob Stoklund Olesen | 94ed4d4 | 2012-08-24 00:31:16 +0000 | [diff] [blame] | 292 | CodeGenInstruction::CodeGenInstruction(Record *R) |
Craig Topper | 2406477 | 2014-04-15 07:20:03 +0000 | [diff] [blame] | 293 | : TheDef(R), Operands(R), InferredFrom(nullptr) { |
Chris Lattner | d8adec7 | 2010-11-01 04:03:32 +0000 | [diff] [blame] | 294 | Namespace = R->getValueAsString("Namespace"); |
| 295 | AsmString = R->getValueAsString("AsmString"); |
| 296 | |
| 297 | isReturn = R->getValueAsBit("isReturn"); |
| 298 | isBranch = R->getValueAsBit("isBranch"); |
| 299 | isIndirectBranch = R->getValueAsBit("isIndirectBranch"); |
| 300 | isCompare = R->getValueAsBit("isCompare"); |
Evan Cheng | 7f8ab6e | 2010-11-17 20:13:28 +0000 | [diff] [blame] | 301 | isMoveImm = R->getValueAsBit("isMoveImm"); |
Evan Cheng | 880e299d | 2011-03-15 05:09:26 +0000 | [diff] [blame] | 302 | isBitcast = R->getValueAsBit("isBitcast"); |
Jakob Stoklund Olesen | 2382d32 | 2012-08-16 23:11:47 +0000 | [diff] [blame] | 303 | isSelect = R->getValueAsBit("isSelect"); |
Chris Lattner | d8adec7 | 2010-11-01 04:03:32 +0000 | [diff] [blame] | 304 | isBarrier = R->getValueAsBit("isBarrier"); |
| 305 | isCall = R->getValueAsBit("isCall"); |
| 306 | canFoldAsLoad = R->getValueAsBit("canFoldAsLoad"); |
Chris Lattner | d8adec7 | 2010-11-01 04:03:32 +0000 | [diff] [blame] | 307 | isPredicable = Operands.isPredicable || R->getValueAsBit("isPredicable"); |
| 308 | isConvertibleToThreeAddress = R->getValueAsBit("isConvertibleToThreeAddress"); |
| 309 | isCommutable = R->getValueAsBit("isCommutable"); |
| 310 | isTerminator = R->getValueAsBit("isTerminator"); |
| 311 | isReMaterializable = R->getValueAsBit("isReMaterializable"); |
| 312 | hasDelaySlot = R->getValueAsBit("hasDelaySlot"); |
| 313 | usesCustomInserter = R->getValueAsBit("usesCustomInserter"); |
Andrew Trick | 52363bd | 2011-09-20 18:22:31 +0000 | [diff] [blame] | 314 | hasPostISelHook = R->getValueAsBit("hasPostISelHook"); |
Chris Lattner | d8adec7 | 2010-11-01 04:03:32 +0000 | [diff] [blame] | 315 | hasCtrlDep = R->getValueAsBit("hasCtrlDep"); |
| 316 | isNotDuplicable = R->getValueAsBit("isNotDuplicable"); |
Quentin Colombet | d533cdf | 2014-08-11 22:17:14 +0000 | [diff] [blame] | 317 | isRegSequence = R->getValueAsBit("isRegSequence"); |
Quentin Colombet | 7e75cba | 2014-08-20 21:51:26 +0000 | [diff] [blame] | 318 | isExtractSubreg = R->getValueAsBit("isExtractSubreg"); |
Quentin Colombet | 7e3da66 | 2014-08-20 23:49:36 +0000 | [diff] [blame] | 319 | isInsertSubreg = R->getValueAsBit("isInsertSubreg"); |
Jakob Stoklund Olesen | af507bf | 2012-08-23 19:34:46 +0000 | [diff] [blame] | 320 | |
Craig Topper | bc9486b | 2014-02-05 09:10:40 +0000 | [diff] [blame] | 321 | bool Unset; |
| 322 | mayLoad = R->getValueAsBitOrUnset("mayLoad", Unset); |
| 323 | mayLoad_Unset = Unset; |
| 324 | mayStore = R->getValueAsBitOrUnset("mayStore", Unset); |
| 325 | mayStore_Unset = Unset; |
| 326 | hasSideEffects = R->getValueAsBitOrUnset("hasSideEffects", Unset); |
| 327 | hasSideEffects_Unset = Unset; |
Jakob Stoklund Olesen | af507bf | 2012-08-23 19:34:46 +0000 | [diff] [blame] | 328 | |
Chris Lattner | d8adec7 | 2010-11-01 04:03:32 +0000 | [diff] [blame] | 329 | isAsCheapAsAMove = R->getValueAsBit("isAsCheapAsAMove"); |
| 330 | hasExtraSrcRegAllocReq = R->getValueAsBit("hasExtraSrcRegAllocReq"); |
| 331 | hasExtraDefRegAllocReq = R->getValueAsBit("hasExtraDefRegAllocReq"); |
Jim Grosbach | 4c08a9f | 2011-07-07 00:48:02 +0000 | [diff] [blame] | 332 | isCodeGenOnly = R->getValueAsBit("isCodeGenOnly"); |
Jim Grosbach | f3fd36e | 2011-07-06 21:33:38 +0000 | [diff] [blame] | 333 | isPseudo = R->getValueAsBit("isPseudo"); |
Chris Lattner | d8adec7 | 2010-11-01 04:03:32 +0000 | [diff] [blame] | 334 | ImplicitDefs = R->getValueAsListOfDefs("Defs"); |
| 335 | ImplicitUses = R->getValueAsListOfDefs("Uses"); |
| 336 | |
Chris Lattner | d8adec7 | 2010-11-01 04:03:32 +0000 | [diff] [blame] | 337 | // Parse Constraints. |
| 338 | ParseConstraints(R->getValueAsString("Constraints"), Operands); |
| 339 | |
| 340 | // Parse the DisableEncoding field. |
| 341 | Operands.ProcessDisableEncoding(R->getValueAsString("DisableEncoding")); |
Joey Gouly | 0e76fa7 | 2013-09-12 10:28:05 +0000 | [diff] [blame] | 342 | |
| 343 | // First check for a ComplexDeprecationPredicate. |
| 344 | if (R->getValue("ComplexDeprecationPredicate")) { |
| 345 | HasComplexDeprecationPredicate = true; |
| 346 | DeprecatedReason = R->getValueAsString("ComplexDeprecationPredicate"); |
| 347 | } else if (RecordVal *Dep = R->getValue("DeprecatedFeatureMask")) { |
| 348 | // Check if we have a Subtarget feature mask. |
| 349 | HasComplexDeprecationPredicate = false; |
| 350 | DeprecatedReason = Dep->getValue()->getAsString(); |
| 351 | } else { |
| 352 | // This instruction isn't deprecated. |
| 353 | HasComplexDeprecationPredicate = false; |
| 354 | DeprecatedReason = ""; |
| 355 | } |
Chris Lattner | d8adec7 | 2010-11-01 04:03:32 +0000 | [diff] [blame] | 356 | } |
Chris Lattner | 7bc5d9b | 2010-03-27 20:09:24 +0000 | [diff] [blame] | 357 | |
| 358 | /// HasOneImplicitDefWithKnownVT - If the instruction has at least one |
| 359 | /// implicit def and it has a known VT, return the VT, otherwise return |
| 360 | /// MVT::Other. |
| 361 | MVT::SimpleValueType CodeGenInstruction:: |
| 362 | HasOneImplicitDefWithKnownVT(const CodeGenTarget &TargetInfo) const { |
| 363 | if (ImplicitDefs.empty()) return MVT::Other; |
NAKAMURA Takumi | 9d29eff | 2011-01-26 02:03:37 +0000 | [diff] [blame] | 364 | |
Chris Lattner | 7bc5d9b | 2010-03-27 20:09:24 +0000 | [diff] [blame] | 365 | // Check to see if the first implicit def has a resolvable type. |
| 366 | Record *FirstImplicitDef = ImplicitDefs[0]; |
| 367 | assert(FirstImplicitDef->isSubClassOf("Register")); |
NAKAMURA Takumi | 9d29eff | 2011-01-26 02:03:37 +0000 | [diff] [blame] | 368 | const std::vector<MVT::SimpleValueType> &RegVTs = |
Chris Lattner | 7bc5d9b | 2010-03-27 20:09:24 +0000 | [diff] [blame] | 369 | TargetInfo.getRegisterVTs(FirstImplicitDef); |
| 370 | if (RegVTs.size() == 1) |
| 371 | return RegVTs[0]; |
| 372 | return MVT::Other; |
| 373 | } |
| 374 | |
Chris Lattner | 25d9c7f | 2010-11-01 01:07:14 +0000 | [diff] [blame] | 375 | |
| 376 | /// FlattenAsmStringVariants - Flatten the specified AsmString to only |
| 377 | /// include text from the specified variant, returning the new string. |
| 378 | std::string CodeGenInstruction:: |
| 379 | FlattenAsmStringVariants(StringRef Cur, unsigned Variant) { |
| 380 | std::string Res = ""; |
NAKAMURA Takumi | 9d29eff | 2011-01-26 02:03:37 +0000 | [diff] [blame] | 381 | |
Chris Lattner | 25d9c7f | 2010-11-01 01:07:14 +0000 | [diff] [blame] | 382 | for (;;) { |
| 383 | // Find the start of the next variant string. |
| 384 | size_t VariantsStart = 0; |
| 385 | for (size_t e = Cur.size(); VariantsStart != e; ++VariantsStart) |
| 386 | if (Cur[VariantsStart] == '{' && |
| 387 | (VariantsStart == 0 || (Cur[VariantsStart-1] != '$' && |
| 388 | Cur[VariantsStart-1] != '\\'))) |
| 389 | break; |
NAKAMURA Takumi | 9d29eff | 2011-01-26 02:03:37 +0000 | [diff] [blame] | 390 | |
Chris Lattner | 25d9c7f | 2010-11-01 01:07:14 +0000 | [diff] [blame] | 391 | // Add the prefix to the result. |
| 392 | Res += Cur.slice(0, VariantsStart); |
| 393 | if (VariantsStart == Cur.size()) |
| 394 | break; |
NAKAMURA Takumi | 9d29eff | 2011-01-26 02:03:37 +0000 | [diff] [blame] | 395 | |
Chris Lattner | 25d9c7f | 2010-11-01 01:07:14 +0000 | [diff] [blame] | 396 | ++VariantsStart; // Skip the '{'. |
NAKAMURA Takumi | 9d29eff | 2011-01-26 02:03:37 +0000 | [diff] [blame] | 397 | |
Chris Lattner | 25d9c7f | 2010-11-01 01:07:14 +0000 | [diff] [blame] | 398 | // Scan to the end of the variants string. |
| 399 | size_t VariantsEnd = VariantsStart; |
| 400 | unsigned NestedBraces = 1; |
| 401 | for (size_t e = Cur.size(); VariantsEnd != e; ++VariantsEnd) { |
| 402 | if (Cur[VariantsEnd] == '}' && Cur[VariantsEnd-1] != '\\') { |
| 403 | if (--NestedBraces == 0) |
| 404 | break; |
| 405 | } else if (Cur[VariantsEnd] == '{') |
| 406 | ++NestedBraces; |
| 407 | } |
NAKAMURA Takumi | 9d29eff | 2011-01-26 02:03:37 +0000 | [diff] [blame] | 408 | |
Chris Lattner | 25d9c7f | 2010-11-01 01:07:14 +0000 | [diff] [blame] | 409 | // Select the Nth variant (or empty). |
| 410 | StringRef Selection = Cur.slice(VariantsStart, VariantsEnd); |
| 411 | for (unsigned i = 0; i != Variant; ++i) |
| 412 | Selection = Selection.split('|').second; |
| 413 | Res += Selection.split('|').first; |
NAKAMURA Takumi | 9d29eff | 2011-01-26 02:03:37 +0000 | [diff] [blame] | 414 | |
Chris Lattner | 25d9c7f | 2010-11-01 01:07:14 +0000 | [diff] [blame] | 415 | assert(VariantsEnd != Cur.size() && |
| 416 | "Unterminated variants in assembly string!"); |
| 417 | Cur = Cur.substr(VariantsEnd + 1); |
| 418 | } |
NAKAMURA Takumi | 9d29eff | 2011-01-26 02:03:37 +0000 | [diff] [blame] | 419 | |
Chris Lattner | 25d9c7f | 2010-11-01 01:07:14 +0000 | [diff] [blame] | 420 | return Res; |
| 421 | } |
| 422 | |
Chris Lattner | 488c201 | 2010-11-01 04:05:41 +0000 | [diff] [blame] | 423 | |
| 424 | //===----------------------------------------------------------------------===// |
| 425 | /// CodeGenInstAlias Implementation |
| 426 | //===----------------------------------------------------------------------===// |
| 427 | |
Bob Wilson | b9b2422 | 2011-01-26 19:44:55 +0000 | [diff] [blame] | 428 | /// tryAliasOpMatch - This is a helper function for the CodeGenInstAlias |
| 429 | /// constructor. It checks if an argument in an InstAlias pattern matches |
| 430 | /// the corresponding operand of the instruction. It returns true on a |
| 431 | /// successful match, with ResOp set to the result operand to be used. |
David Greene | af8ee2c | 2011-07-29 22:43:06 +0000 | [diff] [blame] | 432 | bool CodeGenInstAlias::tryAliasOpMatch(DagInit *Result, unsigned AliasOpNo, |
Bob Wilson | b9b2422 | 2011-01-26 19:44:55 +0000 | [diff] [blame] | 433 | Record *InstOpRec, bool hasSubOps, |
Jakob Stoklund Olesen | d7b6696 | 2012-08-22 23:33:58 +0000 | [diff] [blame] | 434 | ArrayRef<SMLoc> Loc, CodeGenTarget &T, |
Bob Wilson | b9b2422 | 2011-01-26 19:44:55 +0000 | [diff] [blame] | 435 | ResultOperand &ResOp) { |
David Greene | af8ee2c | 2011-07-29 22:43:06 +0000 | [diff] [blame] | 436 | Init *Arg = Result->getArg(AliasOpNo); |
Sean Silva | fb509ed | 2012-10-10 20:24:43 +0000 | [diff] [blame] | 437 | DefInit *ADI = dyn_cast<DefInit>(Arg); |
Craig Topper | 2406477 | 2014-04-15 07:20:03 +0000 | [diff] [blame] | 438 | Record *ResultRecord = ADI ? ADI->getDef() : nullptr; |
Bob Wilson | b9b2422 | 2011-01-26 19:44:55 +0000 | [diff] [blame] | 439 | |
| 440 | if (ADI && ADI->getDef() == InstOpRec) { |
| 441 | // If the operand is a record, it must have a name, and the record type |
| 442 | // must match up with the instruction's argument type. |
| 443 | if (Result->getArgName(AliasOpNo).empty()) |
Benjamin Kramer | 48e7e85 | 2014-03-29 17:17:15 +0000 | [diff] [blame] | 444 | PrintFatalError(Loc, "result argument #" + Twine(AliasOpNo) + |
| 445 | " must have a name!"); |
Tim Northover | 3e38d29 | 2014-03-29 09:03:22 +0000 | [diff] [blame] | 446 | ResOp = ResultOperand(Result->getArgName(AliasOpNo), ResultRecord); |
Bob Wilson | b9b2422 | 2011-01-26 19:44:55 +0000 | [diff] [blame] | 447 | return true; |
| 448 | } |
| 449 | |
Jim Grosbach | 6acb148 | 2011-10-28 16:43:40 +0000 | [diff] [blame] | 450 | // For register operands, the source register class can be a subclass |
| 451 | // of the instruction register class, not just an exact match. |
Tim Northover | 3e38d29 | 2014-03-29 09:03:22 +0000 | [diff] [blame] | 452 | if (InstOpRec->isSubClassOf("RegisterOperand")) |
| 453 | InstOpRec = InstOpRec->getValueAsDef("RegClass"); |
| 454 | |
| 455 | if (ADI && ADI->getDef()->isSubClassOf("RegisterOperand")) |
| 456 | ADI = ADI->getDef()->getValueAsDef("RegClass")->getDefInit(); |
| 457 | |
Jim Grosbach | 6acb148 | 2011-10-28 16:43:40 +0000 | [diff] [blame] | 458 | if (ADI && ADI->getDef()->isSubClassOf("RegisterClass")) { |
| 459 | if (!InstOpRec->isSubClassOf("RegisterClass")) |
| 460 | return false; |
Jim Grosbach | d1f1b79 | 2011-10-28 22:32:53 +0000 | [diff] [blame] | 461 | if (!T.getRegisterClass(InstOpRec) |
| 462 | .hasSubClass(&T.getRegisterClass(ADI->getDef()))) |
| 463 | return false; |
Tim Northover | 3e38d29 | 2014-03-29 09:03:22 +0000 | [diff] [blame] | 464 | ResOp = ResultOperand(Result->getArgName(AliasOpNo), ResultRecord); |
Jim Grosbach | d1f1b79 | 2011-10-28 22:32:53 +0000 | [diff] [blame] | 465 | return true; |
Jim Grosbach | 6acb148 | 2011-10-28 16:43:40 +0000 | [diff] [blame] | 466 | } |
| 467 | |
Bob Wilson | b9b2422 | 2011-01-26 19:44:55 +0000 | [diff] [blame] | 468 | // Handle explicit registers. |
| 469 | if (ADI && ADI->getDef()->isSubClassOf("Register")) { |
Jim Grosbach | a7b2d44 | 2011-08-19 20:33:06 +0000 | [diff] [blame] | 470 | if (InstOpRec->isSubClassOf("OptionalDefOperand")) { |
| 471 | DagInit *DI = InstOpRec->getValueAsDag("MIOperandInfo"); |
| 472 | // The operand info should only have a single (register) entry. We |
| 473 | // want the register class of it. |
Sean Silva | 88eb8dd | 2012-10-10 20:24:47 +0000 | [diff] [blame] | 474 | InstOpRec = cast<DefInit>(DI->getArg(0))->getDef(); |
Jim Grosbach | a7b2d44 | 2011-08-19 20:33:06 +0000 | [diff] [blame] | 475 | } |
| 476 | |
Bob Wilson | b9b2422 | 2011-01-26 19:44:55 +0000 | [diff] [blame] | 477 | if (!InstOpRec->isSubClassOf("RegisterClass")) |
| 478 | return false; |
| 479 | |
Jakob Stoklund Olesen | d7bc5c2 | 2011-06-15 04:50:36 +0000 | [diff] [blame] | 480 | if (!T.getRegisterClass(InstOpRec) |
| 481 | .contains(T.getRegBank().getReg(ADI->getDef()))) |
Joerg Sonnenberger | 635debe | 2012-10-25 20:33:17 +0000 | [diff] [blame] | 482 | PrintFatalError(Loc, "fixed register " + ADI->getDef()->getName() + |
| 483 | " is not a member of the " + InstOpRec->getName() + |
| 484 | " register class!"); |
Bob Wilson | b9b2422 | 2011-01-26 19:44:55 +0000 | [diff] [blame] | 485 | |
| 486 | if (!Result->getArgName(AliasOpNo).empty()) |
Joerg Sonnenberger | 635debe | 2012-10-25 20:33:17 +0000 | [diff] [blame] | 487 | PrintFatalError(Loc, "result fixed register argument must " |
| 488 | "not have a name!"); |
Bob Wilson | b9b2422 | 2011-01-26 19:44:55 +0000 | [diff] [blame] | 489 | |
Tim Northover | 3e38d29 | 2014-03-29 09:03:22 +0000 | [diff] [blame] | 490 | ResOp = ResultOperand(ResultRecord); |
Bob Wilson | b9b2422 | 2011-01-26 19:44:55 +0000 | [diff] [blame] | 491 | return true; |
| 492 | } |
| 493 | |
| 494 | // Handle "zero_reg" for optional def operands. |
| 495 | if (ADI && ADI->getDef()->getName() == "zero_reg") { |
| 496 | |
| 497 | // Check if this is an optional def. |
Jim Grosbach | 29cdcda | 2011-11-15 01:46:57 +0000 | [diff] [blame] | 498 | // Tied operands where the source is a sub-operand of a complex operand |
| 499 | // need to represent both operands in the alias destination instruction. |
| 500 | // Allow zero_reg for the tied portion. This can and should go away once |
| 501 | // the MC representation of things doesn't use tied operands at all. |
| 502 | //if (!InstOpRec->isSubClassOf("OptionalDefOperand")) |
| 503 | // throw TGError(Loc, "reg0 used for result that is not an " |
| 504 | // "OptionalDefOperand!"); |
Bob Wilson | b9b2422 | 2011-01-26 19:44:55 +0000 | [diff] [blame] | 505 | |
Craig Topper | 2406477 | 2014-04-15 07:20:03 +0000 | [diff] [blame] | 506 | ResOp = ResultOperand(static_cast<Record*>(nullptr)); |
Bob Wilson | b9b2422 | 2011-01-26 19:44:55 +0000 | [diff] [blame] | 507 | return true; |
| 508 | } |
| 509 | |
Jim Grosbach | d1f1b79 | 2011-10-28 22:32:53 +0000 | [diff] [blame] | 510 | // Literal integers. |
Sean Silva | fb509ed | 2012-10-10 20:24:43 +0000 | [diff] [blame] | 511 | if (IntInit *II = dyn_cast<IntInit>(Arg)) { |
Bob Wilson | b9b2422 | 2011-01-26 19:44:55 +0000 | [diff] [blame] | 512 | if (hasSubOps || !InstOpRec->isSubClassOf("Operand")) |
| 513 | return false; |
| 514 | // Integer arguments can't have names. |
| 515 | if (!Result->getArgName(AliasOpNo).empty()) |
Benjamin Kramer | 48e7e85 | 2014-03-29 17:17:15 +0000 | [diff] [blame] | 516 | PrintFatalError(Loc, "result argument #" + Twine(AliasOpNo) + |
Joerg Sonnenberger | 635debe | 2012-10-25 20:33:17 +0000 | [diff] [blame] | 517 | " must not have a name!"); |
Bob Wilson | b9b2422 | 2011-01-26 19:44:55 +0000 | [diff] [blame] | 518 | ResOp = ResultOperand(II->getValue()); |
| 519 | return true; |
| 520 | } |
| 521 | |
Pete Cooper | 2cfdfe5 | 2014-08-07 05:47:04 +0000 | [diff] [blame] | 522 | // Bits<n> (also used for 0bxx literals) |
| 523 | if (BitsInit *BI = dyn_cast<BitsInit>(Arg)) { |
| 524 | if (hasSubOps || !InstOpRec->isSubClassOf("Operand")) |
| 525 | return false; |
| 526 | if (!BI->isComplete()) |
| 527 | return false; |
| 528 | // Convert the bits init to an integer and use that for the result. |
| 529 | IntInit *II = |
| 530 | dyn_cast_or_null<IntInit>(BI->convertInitializerTo(IntRecTy::get())); |
| 531 | if (!II) |
| 532 | return false; |
| 533 | ResOp = ResultOperand(II->getValue()); |
| 534 | return true; |
| 535 | } |
| 536 | |
Jim Grosbach | d1f1b79 | 2011-10-28 22:32:53 +0000 | [diff] [blame] | 537 | // If both are Operands with the same MVT, allow the conversion. It's |
| 538 | // up to the user to make sure the values are appropriate, just like |
| 539 | // for isel Pat's. |
Michael Ilseman | 5be22a1 | 2014-12-12 21:48:03 +0000 | [diff] [blame^] | 540 | if (InstOpRec->isSubClassOf("Operand") && ADI && |
Jim Grosbach | d1f1b79 | 2011-10-28 22:32:53 +0000 | [diff] [blame] | 541 | ADI->getDef()->isSubClassOf("Operand")) { |
| 542 | // FIXME: What other attributes should we check here? Identical |
| 543 | // MIOperandInfo perhaps? |
| 544 | if (InstOpRec->getValueInit("Type") != ADI->getDef()->getValueInit("Type")) |
| 545 | return false; |
| 546 | ResOp = ResultOperand(Result->getArgName(AliasOpNo), ADI->getDef()); |
| 547 | return true; |
| 548 | } |
| 549 | |
Bob Wilson | b9b2422 | 2011-01-26 19:44:55 +0000 | [diff] [blame] | 550 | return false; |
| 551 | } |
| 552 | |
Tim Northover | 60091cf | 2014-05-15 13:36:01 +0000 | [diff] [blame] | 553 | unsigned CodeGenInstAlias::ResultOperand::getMINumOperands() const { |
| 554 | if (!isRecord()) |
| 555 | return 1; |
| 556 | |
| 557 | Record *Rec = getRecord(); |
| 558 | if (!Rec->isSubClassOf("Operand")) |
| 559 | return 1; |
| 560 | |
| 561 | DagInit *MIOpInfo = Rec->getValueAsDag("MIOperandInfo"); |
| 562 | if (MIOpInfo->getNumArgs() == 0) { |
| 563 | // Unspecified, so it defaults to 1 |
| 564 | return 1; |
| 565 | } |
| 566 | |
| 567 | return MIOpInfo->getNumArgs(); |
| 568 | } |
| 569 | |
Tim Northover | d8d65a6 | 2014-05-15 11:16:32 +0000 | [diff] [blame] | 570 | CodeGenInstAlias::CodeGenInstAlias(Record *R, unsigned Variant, |
| 571 | CodeGenTarget &T) |
| 572 | : TheDef(R) { |
Chris Lattner | dd3b09c | 2010-11-01 05:34:34 +0000 | [diff] [blame] | 573 | Result = R->getValueAsDag("ResultInst"); |
Tim Northover | d8d65a6 | 2014-05-15 11:16:32 +0000 | [diff] [blame] | 574 | AsmString = R->getValueAsString("AsmString"); |
| 575 | AsmString = CodeGenInstruction::FlattenAsmStringVariants(AsmString, Variant); |
| 576 | |
Chris Lattner | 8ffd129 | 2010-11-06 06:39:47 +0000 | [diff] [blame] | 577 | |
| 578 | // Verify that the root of the result is an instruction. |
Sean Silva | fb509ed | 2012-10-10 20:24:43 +0000 | [diff] [blame] | 579 | DefInit *DI = dyn_cast<DefInit>(Result->getOperator()); |
Craig Topper | 2406477 | 2014-04-15 07:20:03 +0000 | [diff] [blame] | 580 | if (!DI || !DI->getDef()->isSubClassOf("Instruction")) |
Joerg Sonnenberger | 635debe | 2012-10-25 20:33:17 +0000 | [diff] [blame] | 581 | PrintFatalError(R->getLoc(), |
| 582 | "result of inst alias should be an instruction"); |
Chris Lattner | 8ffd129 | 2010-11-06 06:39:47 +0000 | [diff] [blame] | 583 | |
| 584 | ResultInst = &T.getInstruction(DI->getDef()); |
NAKAMURA Takumi | 9d29eff | 2011-01-26 02:03:37 +0000 | [diff] [blame] | 585 | |
Chris Lattner | b625dd2 | 2010-11-06 07:06:09 +0000 | [diff] [blame] | 586 | // NameClass - If argument names are repeated, we need to verify they have |
| 587 | // the same class. |
| 588 | StringMap<Record*> NameClass; |
Bob Wilson | a48eacc | 2011-01-20 18:38:10 +0000 | [diff] [blame] | 589 | for (unsigned i = 0, e = Result->getNumArgs(); i != e; ++i) { |
Sean Silva | fb509ed | 2012-10-10 20:24:43 +0000 | [diff] [blame] | 590 | DefInit *ADI = dyn_cast<DefInit>(Result->getArg(i)); |
Bob Wilson | a48eacc | 2011-01-20 18:38:10 +0000 | [diff] [blame] | 591 | if (!ADI || Result->getArgName(i).empty()) |
| 592 | continue; |
| 593 | // Verify we don't have something like: (someinst GR16:$foo, GR32:$foo) |
| 594 | // $foo can exist multiple times in the result list, but it must have the |
| 595 | // same type. |
| 596 | Record *&Entry = NameClass[Result->getArgName(i)]; |
| 597 | if (Entry && Entry != ADI->getDef()) |
Joerg Sonnenberger | 635debe | 2012-10-25 20:33:17 +0000 | [diff] [blame] | 598 | PrintFatalError(R->getLoc(), "result value $" + Result->getArgName(i) + |
| 599 | " is both " + Entry->getName() + " and " + |
| 600 | ADI->getDef()->getName() + "!"); |
Bob Wilson | a48eacc | 2011-01-20 18:38:10 +0000 | [diff] [blame] | 601 | Entry = ADI->getDef(); |
| 602 | } |
NAKAMURA Takumi | 9d29eff | 2011-01-26 02:03:37 +0000 | [diff] [blame] | 603 | |
Chris Lattner | 7603052 | 2010-11-06 06:54:38 +0000 | [diff] [blame] | 604 | // Decode and validate the arguments of the result. |
Chris Lattner | 8188fb2 | 2010-11-06 07:31:43 +0000 | [diff] [blame] | 605 | unsigned AliasOpNo = 0; |
| 606 | for (unsigned i = 0, e = ResultInst->Operands.size(); i != e; ++i) { |
Bob Wilson | b9b2422 | 2011-01-26 19:44:55 +0000 | [diff] [blame] | 607 | |
Jim Grosbach | 29cdcda | 2011-11-15 01:46:57 +0000 | [diff] [blame] | 608 | // Tied registers don't have an entry in the result dag unless they're part |
| 609 | // of a complex operand, in which case we include them anyways, as we |
| 610 | // don't have any other way to specify the whole operand. |
| 611 | if (ResultInst->Operands[i].MINumOperands == 1 && |
| 612 | ResultInst->Operands[i].getTiedRegister() != -1) |
Chris Lattner | 8188fb2 | 2010-11-06 07:31:43 +0000 | [diff] [blame] | 613 | continue; |
| 614 | |
| 615 | if (AliasOpNo >= Result->getNumArgs()) |
Joerg Sonnenberger | 635debe | 2012-10-25 20:33:17 +0000 | [diff] [blame] | 616 | PrintFatalError(R->getLoc(), "not enough arguments for instruction!"); |
NAKAMURA Takumi | 9d29eff | 2011-01-26 02:03:37 +0000 | [diff] [blame] | 617 | |
Bob Wilson | b9b2422 | 2011-01-26 19:44:55 +0000 | [diff] [blame] | 618 | Record *InstOpRec = ResultInst->Operands[i].Rec; |
| 619 | unsigned NumSubOps = ResultInst->Operands[i].MINumOperands; |
| 620 | ResultOperand ResOp(static_cast<int64_t>(0)); |
| 621 | if (tryAliasOpMatch(Result, AliasOpNo, InstOpRec, (NumSubOps > 1), |
| 622 | R->getLoc(), T, ResOp)) { |
Owen Anderson | da6bd3e | 2012-06-08 00:25:03 +0000 | [diff] [blame] | 623 | // If this is a simple operand, or a complex operand with a custom match |
| 624 | // class, then we can match is verbatim. |
| 625 | if (NumSubOps == 1 || |
| 626 | (InstOpRec->getValue("ParserMatchClass") && |
| 627 | InstOpRec->getValueAsDef("ParserMatchClass") |
| 628 | ->getValueAsString("Name") != "Imm")) { |
| 629 | ResultOperands.push_back(ResOp); |
| 630 | ResultInstOperandIndex.push_back(std::make_pair(i, -1)); |
| 631 | ++AliasOpNo; |
| 632 | |
| 633 | // Otherwise, we need to match each of the suboperands individually. |
| 634 | } else { |
| 635 | DagInit *MIOI = ResultInst->Operands[i].MIOperandInfo; |
| 636 | for (unsigned SubOp = 0; SubOp != NumSubOps; ++SubOp) { |
Sean Silva | 88eb8dd | 2012-10-10 20:24:47 +0000 | [diff] [blame] | 637 | Record *SubRec = cast<DefInit>(MIOI->getArg(SubOp))->getDef(); |
Owen Anderson | da6bd3e | 2012-06-08 00:25:03 +0000 | [diff] [blame] | 638 | |
| 639 | // Take care to instantiate each of the suboperands with the correct |
| 640 | // nomenclature: $foo.bar |
| 641 | ResultOperands.push_back( |
| 642 | ResultOperand(Result->getArgName(AliasOpNo) + "." + |
| 643 | MIOI->getArgName(SubOp), SubRec)); |
| 644 | ResultInstOperandIndex.push_back(std::make_pair(i, SubOp)); |
| 645 | } |
| 646 | ++AliasOpNo; |
| 647 | } |
Chris Lattner | 7603052 | 2010-11-06 06:54:38 +0000 | [diff] [blame] | 648 | continue; |
| 649 | } |
NAKAMURA Takumi | 9d29eff | 2011-01-26 02:03:37 +0000 | [diff] [blame] | 650 | |
Bob Wilson | b9b2422 | 2011-01-26 19:44:55 +0000 | [diff] [blame] | 651 | // If the argument did not match the instruction operand, and the operand |
| 652 | // is composed of multiple suboperands, try matching the suboperands. |
| 653 | if (NumSubOps > 1) { |
David Greene | af8ee2c | 2011-07-29 22:43:06 +0000 | [diff] [blame] | 654 | DagInit *MIOI = ResultInst->Operands[i].MIOperandInfo; |
Bob Wilson | b9b2422 | 2011-01-26 19:44:55 +0000 | [diff] [blame] | 655 | for (unsigned SubOp = 0; SubOp != NumSubOps; ++SubOp) { |
| 656 | if (AliasOpNo >= Result->getNumArgs()) |
Joerg Sonnenberger | 635debe | 2012-10-25 20:33:17 +0000 | [diff] [blame] | 657 | PrintFatalError(R->getLoc(), "not enough arguments for instruction!"); |
Sean Silva | 88eb8dd | 2012-10-10 20:24:47 +0000 | [diff] [blame] | 658 | Record *SubRec = cast<DefInit>(MIOI->getArg(SubOp))->getDef(); |
Bob Wilson | b9b2422 | 2011-01-26 19:44:55 +0000 | [diff] [blame] | 659 | if (tryAliasOpMatch(Result, AliasOpNo, SubRec, false, |
| 660 | R->getLoc(), T, ResOp)) { |
| 661 | ResultOperands.push_back(ResOp); |
| 662 | ResultInstOperandIndex.push_back(std::make_pair(i, SubOp)); |
| 663 | ++AliasOpNo; |
| 664 | } else { |
Benjamin Kramer | 48e7e85 | 2014-03-29 17:17:15 +0000 | [diff] [blame] | 665 | PrintFatalError(R->getLoc(), "result argument #" + Twine(AliasOpNo) + |
Bob Wilson | b9b2422 | 2011-01-26 19:44:55 +0000 | [diff] [blame] | 666 | " does not match instruction operand class " + |
| 667 | (SubOp == 0 ? InstOpRec->getName() :SubRec->getName())); |
| 668 | } |
| 669 | } |
Chris Lattner | b6f8e82 | 2010-11-06 19:25:43 +0000 | [diff] [blame] | 670 | continue; |
| 671 | } |
Benjamin Kramer | 48e7e85 | 2014-03-29 17:17:15 +0000 | [diff] [blame] | 672 | PrintFatalError(R->getLoc(), "result argument #" + Twine(AliasOpNo) + |
Joerg Sonnenberger | 635debe | 2012-10-25 20:33:17 +0000 | [diff] [blame] | 673 | " does not match instruction operand class " + |
| 674 | InstOpRec->getName()); |
Chris Lattner | 7603052 | 2010-11-06 06:54:38 +0000 | [diff] [blame] | 675 | } |
NAKAMURA Takumi | 9d29eff | 2011-01-26 02:03:37 +0000 | [diff] [blame] | 676 | |
Chris Lattner | 8188fb2 | 2010-11-06 07:31:43 +0000 | [diff] [blame] | 677 | if (AliasOpNo != Result->getNumArgs()) |
Joerg Sonnenberger | 635debe | 2012-10-25 20:33:17 +0000 | [diff] [blame] | 678 | PrintFatalError(R->getLoc(), "too many operands for instruction!"); |
Chris Lattner | 488c201 | 2010-11-01 04:05:41 +0000 | [diff] [blame] | 679 | } |