//===-- X86InstrBuilder.h - Functions to aid building x86 insts -*- C++ -*-===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file was developed by the LLVM research group and is distributed under
+// the University of Illinois Open Source License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
//
// This file exposes functions that may be used with BuildMI from the
// MachineInstrBuilder.h file to handle X86'isms in a clean way.
#include "llvm/CodeGen/MachineInstrBuilder.h"
+namespace llvm {
+
/// addDirectMem - This function is used to add a direct memory reference to the
/// current instruction -- that is, a dereference of an address in a register,
/// with no scale, index or displacement. An example is: DWORD PTR [EAX].
unsigned Reg) {
// Because memory references are always represented with four
// values, this adds: Reg, [1, NoReg, 0] to the instruction.
- return MIB.addReg(Reg).addZImm(1).addMReg(0).addSImm(0);
+ return MIB.addReg(Reg).addZImm(1).addReg(0).addSImm(0);
}
///
inline const MachineInstrBuilder &addRegOffset(const MachineInstrBuilder &MIB,
unsigned Reg, int Offset) {
- return MIB.addReg(Reg).addZImm(1).addMReg(0).addSImm(Offset);
+ return MIB.addReg(Reg).addZImm(1).addReg(0).addSImm(Offset);
+}
+
+inline const MachineInstrBuilder &addFullAddress(const MachineInstrBuilder &MIB,
+ unsigned BaseReg,
+ unsigned Scale,
+ unsigned IndexReg,
+ unsigned Disp) {
+ return MIB.addReg(BaseReg).addZImm(Scale).addReg(IndexReg).addSImm(Disp);
}
/// addFrameReference - This function is used to add a reference to the base of
/// an abstract object on the stack frame of the current function. This
-/// reference has base register <noreg> and a FrameIndex offset until it is
-/// resolved.
+/// reference has base register as the FrameIndex offset until it is resolved.
+/// This allows a constant offset to be specified as well...
///
inline const MachineInstrBuilder &
-addFrameReference(const MachineInstrBuilder &MIB, int FI) {
- return MIB.addReg(0).addZImm(1).addMReg(0).addFrameIndex(FI);
+addFrameReference(const MachineInstrBuilder &MIB, int FI, int Offset = 0) {
+ return MIB.addFrameIndex(FI).addZImm(1).addReg(0).addSImm(Offset);
}
+/// addConstantPoolReference - This function is used to add a reference to the
+/// base of a constant value spilled to the per-function constant pool. The
+/// reference has base register ConstantPoolIndex offset which is retained until
+/// either machine code emission or assembly output. This allows an optional
+/// offset to be added as well.
+///
+inline const MachineInstrBuilder &
+addConstantPoolReference(const MachineInstrBuilder &MIB, unsigned CPI,
+ int Offset = 0) {
+ return MIB.addConstantPoolIndex(CPI).addZImm(1).addReg(0).addSImm(Offset);
+}
+
+} // End llvm namespace
+
#endif