1 //===-- X86InstrBuilder.h - Functions to aid building x86 insts -*- C++ -*-===//
3 // This file exposes functions that may be used with BuildMI from the
4 // MachineInstrBuilder.h file to handle X86'isms in a clean way.
6 // The BuildMem function may be used with the BuildMI function to add entire
7 // memory references in a single, typed, function call. X86 memory references
8 // can be very complex expressions (described in the README), so wrapping them
9 // up behind an easier to use interface makes sense. Descriptions of the
10 // functions are included below.
12 //===----------------------------------------------------------------------===//
14 #ifndef X86INSTRBUILDER_H
15 #define X86INSTRBUILDER_H
17 #include "llvm/CodeGen/MachineInstrBuilder.h"
19 /// addDirectMem - This function is used to add a direct memory reference to the
20 /// current instruction. Because memory references are always represented with
21 /// four values, this adds: Reg, [1, NoReg, 0] to the instruction
23 inline const MachineInstrBuilder &addDirectMem(const MachineInstrBuilder &MIB,
25 return MIB.addReg(Reg).addZImm(1).addMReg(0).addSImm(0);