llvm/lib/Target/PowerPC/PPCInstrBuilder.h

   1 //===-- PPCInstrBuilder.h - Aides for building PPC insts --------*- C++ -*-===//
   2 //
   3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   4 // See https://llvm.org/LICENSE.txt for license information.
   5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   6 //
   7 //===----------------------------------------------------------------------===//
   8 //
   9 // This file exposes functions that may be used with BuildMI from the
  10 // MachineInstrBuilder.h file to simplify generating frame and constant pool
  11 // references.
  12 //
  13 // For reference, the order of operands for memory references is:
  14 // (Operand), Dest Reg, Base Reg, and either Reg Index or Immediate
  15 // Displacement.
  16 //
  17 //===----------------------------------------------------------------------===//
  18
  19 #ifndef LLVM_LIB_TARGET_POWERPC_PPCINSTRBUILDER_H
  20 #define LLVM_LIB_TARGET_POWERPC_PPCINSTRBUILDER_H
  21
  22 #include "llvm/CodeGen/MachineInstrBuilder.h"
  23
  24 namespace llvm {
  25
  26 /// addFrameReference - This function is used to add a reference to the base of
  27 /// an abstract object on the stack frame of the current function.  This
  28 /// reference has base register as the FrameIndex offset until it is resolved.
  29 /// This allows a constant offset to be specified as well...
  30 ///
  31 static inline const MachineInstrBuilder&
  32 addFrameReference(const MachineInstrBuilder &MIB, int FI, int Offset = 0,
  33                   bool mem = true) {
  34   if (mem)
  35     return MIB.addImm(Offset).addFrameIndex(FI);
  36   else
  37     return MIB.addFrameIndex(FI).addImm(Offset);
  38 }
  39
  40 } // End llvm namespace
  41
  42 #endif