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dc6a85256b
If an instruction has several operands and a PC-relative one is not the
first of them, the generator may produce the code that does not pass the
'Address' parameter to the printout method. For example, for an Arm
instruction 'LE LR, $imm', it reuses the same code as for other
instructions where the second operand is not PC-relative:
void ARMInstPrinter::printInstruction(...) {
...
case 11:
// BF16VDOTI_VDOTD, BF16VDOTI_VDOTQ, BF16VDOTS_VDOTD, ...
printOperand(MI, 1, STI, O);
O << ", ";
printOperand(MI, 2, STI, O);
break;
...
The patch fixes that by considering 'PCRel' when comparing
'AsmWriterOperand' values.
Differential Revision: https://reviews.llvm.org/D104698
109 lines
3.9 KiB
C++
109 lines
3.9 KiB
C++
//===- AsmWriterInst.h - Classes encapsulating a printable inst -*- C++ -*-===//
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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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// These classes implement a parser for assembly strings. The parser splits
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// the string into operands, which can be literal strings (the constant bits of
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// the string), actual operands (i.e., operands from the MachineInstr), and
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// dynamically-generated text, specified by raw C++ code.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_UTILS_TABLEGEN_ASMWRITERINST_H
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#define LLVM_UTILS_TABLEGEN_ASMWRITERINST_H
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#include <string>
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#include <vector>
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namespace llvm {
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class CodeGenInstruction;
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class Record;
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struct AsmWriterOperand {
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enum OpType {
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// Output this text surrounded by quotes to the asm.
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isLiteralTextOperand,
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// This is the name of a routine to call to print the operand.
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isMachineInstrOperand,
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// Output this text verbatim to the asm writer. It is code that
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// will output some text to the asm.
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isLiteralStatementOperand
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} OperandType;
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/// MiOpNo - For isMachineInstrOperand, this is the operand number of the
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/// machine instruction.
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unsigned MIOpNo = 0;
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/// Str - For isLiteralTextOperand, this IS the literal text. For
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/// isMachineInstrOperand, this is the PrinterMethodName for the operand..
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/// For isLiteralStatementOperand, this is the code to insert verbatim
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/// into the asm writer.
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std::string Str;
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/// MiModifier - For isMachineInstrOperand, this is the modifier string for
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/// an operand, specified with syntax like ${opname:modifier}.
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std::string MiModifier;
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bool PCRel = false;
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// To make VS STL happy
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AsmWriterOperand(OpType op = isLiteralTextOperand):OperandType(op) {}
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AsmWriterOperand(const std::string &LitStr,
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OpType op = isLiteralTextOperand)
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: OperandType(op), Str(LitStr) {}
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AsmWriterOperand(const std::string &Printer, unsigned _MIOpNo,
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const std::string &Modifier,
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OpType op = isMachineInstrOperand, bool PCRel = false)
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: OperandType(op), MIOpNo(_MIOpNo), Str(Printer), MiModifier(Modifier),
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PCRel(PCRel) {}
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bool operator!=(const AsmWriterOperand &Other) const {
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if (OperandType != Other.OperandType || Str != Other.Str) return true;
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if (OperandType == isMachineInstrOperand)
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return MIOpNo != Other.MIOpNo || MiModifier != Other.MiModifier ||
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PCRel != Other.PCRel;
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return false;
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}
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bool operator==(const AsmWriterOperand &Other) const {
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return !operator!=(Other);
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}
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/// getCode - Return the code that prints this operand.
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std::string getCode(bool PassSubtarget) const;
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};
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class AsmWriterInst {
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public:
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std::vector<AsmWriterOperand> Operands;
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const CodeGenInstruction *CGI;
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unsigned CGIIndex;
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AsmWriterInst(const CodeGenInstruction &CGI, unsigned CGIIndex,
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unsigned Variant);
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/// MatchesAllButOneOp - If this instruction is exactly identical to the
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/// specified instruction except for one differing operand, return the
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/// differing operand number. Otherwise return ~0.
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unsigned MatchesAllButOneOp(const AsmWriterInst &Other) const;
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private:
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void AddLiteralString(const std::string &Str) {
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// If the last operand was already a literal text string, append this to
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// it, otherwise add a new operand.
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if (!Operands.empty() &&
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Operands.back().OperandType == AsmWriterOperand::isLiteralTextOperand)
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Operands.back().Str.append(Str);
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else
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Operands.push_back(AsmWriterOperand(Str));
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}
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};
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}
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#endif
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