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56 lines
2.0 KiB
C++
56 lines
2.0 KiB
C++
//===-- PPCInstrBuilder.h - Aides for building PPC insts --------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file was developed by the LLVM research group and is distributed under
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// the University of Illinois Open Source License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file exposes functions that may be used with BuildMI from the
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// MachineInstrBuilder.h file to simplify generating frame and constant pool
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// references.
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//
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// For reference, the order of operands for memory references is:
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// (Operand), Dest Reg, Base Reg, and either Reg Index or Immediate
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// Displacement.
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//
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//===----------------------------------------------------------------------===//
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#ifndef POWERPC_INSTRBUILDER_H
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#define POWERPC_INSTRBUILDER_H
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#include "llvm/CodeGen/MachineInstrBuilder.h"
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namespace llvm {
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/// addFrameReference - This function is used to add a reference to the base of
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/// an abstract object on the stack frame of the current function. This
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/// reference has base register as the FrameIndex offset until it is resolved.
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/// This allows a constant offset to be specified as well...
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///
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inline const MachineInstrBuilder&
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addFrameReference(const MachineInstrBuilder &MIB, int FI, int Offset = 0,
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bool mem = true) {
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if (mem)
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return MIB.addImm(Offset).addFrameIndex(FI);
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else
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return MIB.addFrameIndex(FI).addImm(Offset);
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}
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/// addConstantPoolReference - This function is used to add a reference to the
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/// base of a constant value spilled to the per-function constant pool. The
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/// reference has base register ConstantPoolIndex offset which is retained until
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/// either machine code emission or assembly output. This allows an optional
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/// offset to be added as well.
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///
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inline const MachineInstrBuilder&
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addConstantPoolReference(const MachineInstrBuilder &MIB, unsigned CPI,
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int Offset = 0) {
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return MIB.addImm(Offset).addConstantPoolIndex(CPI);
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}
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} // End llvm namespace
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#endif
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