//===-- CodeGen/MachineInstBuilder.h - Simplify creation of MIs -*- C++ -*-===//
//
-// This file exposes a function named BuildMI, which is useful for dramatically
-// simplifying how MachineInstr's are created. Instead of using code like this:
+// The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
//
-// M = new MachineInstr(X86::ADDrr32);
-// M->SetMachineOperandVal(0, MachineOperand::MO_VirtualRegister, argVal1);
-// M->SetMachineOperandVal(1, MachineOperand::MO_VirtualRegister, argVal2);
+//===----------------------------------------------------------------------===//
//
-// we can now use code like this:
+// This file exposes a function named BuildMI, which is useful for dramatically
+// simplifying how MachineInstr's are created. It allows use of code like this:
//
-// M = BuildMI(X86::ADDrr8).addReg(argVal1).addReg(argVal2);
+// M = BuildMI(X86::ADDrr8, 2).addReg(argVal1).addReg(argVal2);
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_CODEGEN_MACHINEINSTRBUILDER_H
#define LLVM_CODEGEN_MACHINEINSTRBUILDER_H
-#include "llvm/CodeGen/MachineInstr.h"
+#include "llvm/CodeGen/MachineBasicBlock.h"
+#include "llvm/CodeGen/MachineFunction.h"
-struct MachineInstrBuilder {
- MachineInstr *MI;
+namespace llvm {
+
+class TargetInstrDesc;
- MachineInstrBuilder(MachineInstr *mi) : MI(mi) {}
+class MachineInstrBuilder {
+ MachineInstr *MI;
+public:
+ explicit MachineInstrBuilder(MachineInstr *mi) : MI(mi) {}
/// Allow automatic conversion to the machine instruction we are working on.
///
operator MachineInstr*() const { return MI; }
+ operator MachineBasicBlock::iterator() const { return MI; }
+
+ /// addReg - Add a new virtual register operand...
+ ///
+ const
+ MachineInstrBuilder &addReg(unsigned RegNo, bool isDef = false,
+ bool isImp = false, bool isKill = false,
+ bool isDead = false, unsigned SubReg = 0) const {
+ MI->addOperand(MachineOperand::CreateReg(RegNo, isDef, isImp, isKill,
+ isDead, SubReg));
+ return *this;
+ }
- /// addReg - Add a new register operand...
+ /// addImm - Add a new immediate operand.
///
- MachineInstrBuilder &addReg(int RegNo) {
- MI->addRegOperand(RegNo);
+ const MachineInstrBuilder &addImm(int64_t Val) const {
+ MI->addOperand(MachineOperand::CreateImm(Val));
return *this;
}
- MachineInstrBuilder &addReg(Value *V, bool isDef = false, bool isDNU = false){
- MI->addRegOperand(V, isDef, isDNU);
+ const MachineInstrBuilder &addMBB(MachineBasicBlock *MBB) const {
+ MI->addOperand(MachineOperand::CreateMBB(MBB));
return *this;
}
- MachineInstrBuilder &addPCDisp(Value *V) {
- MI->addPCDispOperand(V);
+ const MachineInstrBuilder &addFrameIndex(unsigned Idx) const {
+ MI->addOperand(MachineOperand::CreateFI(Idx));
return *this;
}
- MachineInstrBuilder &addMReg(int Reg, bool isDef=false) {
- MI->addMachineRegOperand(Reg, isDef);
+ const MachineInstrBuilder &addConstantPoolIndex(unsigned Idx,
+ int Offset = 0) const {
+ MI->addOperand(MachineOperand::CreateCPI(Idx, Offset));
return *this;
}
- /// addSImm - Add a new sign extended immediate operand...
- ///
- MachineInstrBuilder &addSImm(int64_t val) {
- MI->addSignExtImmOperand(val);
+ const MachineInstrBuilder &addJumpTableIndex(unsigned Idx) const {
+ MI->addOperand(MachineOperand::CreateJTI(Idx));
return *this;
}
- /// addZImm - Add a new zero extended immediate operand...
- ///
- MachineInstrBuilder &addZImm(int64_t Val) {
- MI->addZeroExtImmOperand(Val);
+ const MachineInstrBuilder &addGlobalAddress(GlobalValue *GV,
+ int Offset = 0) const {
+ MI->addOperand(MachineOperand::CreateGA(GV, Offset));
+ return *this;
+ }
+
+ const MachineInstrBuilder &addExternalSymbol(const char *FnName) const{
+ MI->addOperand(MachineOperand::CreateES(FnName, 0));
return *this;
}
};
/// BuildMI - Builder interface. Specify how to create the initial instruction
/// itself.
///
-inline MachineInstrBuilder BuildMI(MachineOpCode Opcode, unsigned NumOperands) {
- return MachineInstrBuilder(new MachineInstr(Opcode, NumOperands, true, true));
+inline MachineInstrBuilder BuildMI(const TargetInstrDesc &TID) {
+ return MachineInstrBuilder(new MachineInstr(TID));
}
-#if 0
-inline MachineInstrBuilder BuildMI(MBasicBlock *BB, MachineOpCode Opcode,
- unsigned DestReg = 0) {
- return MachineInstrBuilder(new MachineInstr(BB, Opcode, DestReg));
+/// BuildMI - This version of the builder sets up the first operand as a
+/// destination virtual register.
+///
+inline MachineInstrBuilder BuildMI(const TargetInstrDesc &TID,
+ unsigned DestReg) {
+ return MachineInstrBuilder(new MachineInstr(TID)).addReg(DestReg, true);
}
-#endif
-
+
+/// BuildMI - This version of the builder inserts the newly-built
+/// instruction before the given position in the given MachineBasicBlock, and
+/// sets up the first operand as a destination virtual register.
+///
+inline MachineInstrBuilder BuildMI(MachineBasicBlock &BB,
+ MachineBasicBlock::iterator I,
+ const TargetInstrDesc &TID,
+ unsigned DestReg) {
+ MachineInstr *MI = new MachineInstr(TID);
+ BB.insert(I, MI);
+ return MachineInstrBuilder(MI).addReg(DestReg, true);
+}
+
+/// BuildMI - This version of the builder inserts the newly-built
+/// instruction before the given position in the given MachineBasicBlock, and
+/// does NOT take a destination register.
+///
+inline MachineInstrBuilder BuildMI(MachineBasicBlock &BB,
+ MachineBasicBlock::iterator I,
+ const TargetInstrDesc &TID) {
+ MachineInstr *MI = new MachineInstr(TID);
+ BB.insert(I, MI);
+ return MachineInstrBuilder(MI);
+}
+
+/// BuildMI - This version of the builder inserts the newly-built
+/// instruction at the end of the given MachineBasicBlock, and does NOT take a
+/// destination register.
+///
+inline MachineInstrBuilder BuildMI(MachineBasicBlock *BB,
+ const TargetInstrDesc &TID) {
+ return BuildMI(*BB, BB->end(), TID);
+}
+
+/// BuildMI - This version of the builder inserts the newly-built
+/// instruction at the end of the given MachineBasicBlock, and sets up the first
+/// operand as a destination virtual register.
+///
+inline MachineInstrBuilder BuildMI(MachineBasicBlock *BB,
+ const TargetInstrDesc &TID,
+ unsigned DestReg) {
+ return BuildMI(*BB, BB->end(), TID, DestReg);
+}
+
+} // End llvm namespace
+
#endif
projects / oota-llvm.git / blobdiff