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Allow BuildMI that helps automate construction of SSA information

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llvm-svn: 4443
This commit is contained in:
Chris Lattner 2002-10-30 01:48:41 +00:00
parent d18210e53f
commit be221c6013
2 changed files with 22 additions and 5 deletions
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5
include/llvm/CodeGen/MachineInstr.h
View File

@ -372,10 +372,11 @@ public:
/// addRegOperand - Add a symbolic virtual register reference...
///
void addRegOperand(int reg) {
void addRegOperand(int reg, bool isDef = false) {
assert(!OperandsComplete() &&
"Trying to add an operand to a machine instr that is already done!");
operands.push_back(MachineOperand(reg, MachineOperand::MO_VirtualRegister));
operands.push_back(MachineOperand(reg, MachineOperand::MO_VirtualRegister,
isDef));
}
/// addPCDispOperand - Add a PC relative displacement operand to the MI

22
include/llvm/CodeGen/MachineInstrBuilder.h
View File

@ -29,8 +29,8 @@ struct MachineInstrBuilder {
/// addReg - Add a new virtual register operand...
///
MachineInstrBuilder &addReg(int RegNo) {
MI->addRegOperand(RegNo);
MachineInstrBuilder &addReg(int RegNo, bool isDef = false) {
MI->addRegOperand(RegNo, isDef);
return *this;
}
@ -72,15 +72,31 @@ struct MachineInstrBuilder {
};
/// BuildMI - Builder interface. Specify how to create the initial instruction
/// itself.
/// itself. NumOperands is the number of operands to the machine instruction to
/// allow for memory efficient representation of machine instructions.
///
inline MachineInstrBuilder BuildMI(MachineOpCode Opcode, unsigned NumOperands) {
return MachineInstrBuilder(new MachineInstr(Opcode, NumOperands, true, true));
}
/// BuildMI - This version of the builder inserts the built MachineInstr into
/// the specified MachineBasicBlock.
///
inline MachineInstrBuilder BuildMI(MachineBasicBlock *BB, MachineOpCode Opcode,
unsigned NumOperands) {
return MachineInstrBuilder(new MachineInstr(BB, Opcode, NumOperands));
}
/// BuildMI - This version of the builder inserts the built MachineInstr into
/// the specified MachineBasicBlock, and also sets up the first "operand" as a
/// destination virtual register. NumOperands is the number of additional add*
/// calls that are expected, it does not include the destination register.
///
inline MachineInstrBuilder BuildMI(MachineBasicBlock *BB, MachineOpCode Opcode,
unsigned NumOperands, unsigned DestReg) {
return MachineInstrBuilder(new MachineInstr(BB, Opcode,
NumOperands+1)).addReg(DestReg,
true);
}
#endif