diff options
Diffstat (limited to 'llvm/lib/CodeGen/MIRParser/MIParser.cpp')
| -rw-r--r-- | llvm/lib/CodeGen/MIRParser/MIParser.cpp | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/llvm/lib/CodeGen/MIRParser/MIParser.cpp b/llvm/lib/CodeGen/MIRParser/MIParser.cpp index 33f306945cb..07aac674ffb 100644 --- a/llvm/lib/CodeGen/MIRParser/MIParser.cpp +++ b/llvm/lib/CodeGen/MIRParser/MIParser.cpp @@ -174,6 +174,9 @@ bool MIParser::parseInstruction(unsigned &OpCode) { bool MIParser::parseRegister(unsigned &Reg) { switch (Token.kind()) { + case MIToken::underscore: + Reg = 0; + break; case MIToken::NamedRegister: { StringRef Name = Token.stringValue().drop_front(1); // Drop the '%' if (getRegisterByName(Name, Reg)) @@ -211,6 +214,7 @@ bool MIParser::parseImmediateOperand(MachineOperand &Dest) { bool MIParser::parseMachineOperand(MachineOperand &Dest) { switch (Token.kind()) { + case MIToken::underscore: case MIToken::NamedRegister: return parseRegisterOperand(Dest); case MIToken::IntegerLiteral: @@ -245,6 +249,8 @@ bool MIParser::parseInstrName(StringRef InstrName, unsigned &OpCode) { void MIParser::initNames2Regs() { if (!Names2Regs.empty()) return; + // The '%noreg' register is the register 0. + Names2Regs.insert(std::make_pair("noreg", 0)); const auto *TRI = MF.getSubtarget().getRegisterInfo(); assert(TRI && "Expected target register info"); for (unsigned I = 0, E = TRI->getNumRegs(); I < E; ++I) { |
