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1 //===-- PPCInstrBuilder.h - Aides for building PPC insts --------*- C++ -*-===//
2 //
3 //                     The LLVM Compiler Infrastructure
4 //
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 //
10 // This file exposes functions that may be used with BuildMI from the
11 // MachineInstrBuilder.h file to simplify generating frame and constant pool
12 // references.
13 //
14 // For reference, the order of operands for memory references is:
15 // (Operand), Dest Reg, Base Reg, and either Reg Index or Immediate
16 // Displacement.
17 //
18 //===----------------------------------------------------------------------===//
19 
20 #ifndef LLVM_LIB_TARGET_POWERPC_PPCINSTRBUILDER_H
21 #define LLVM_LIB_TARGET_POWERPC_PPCINSTRBUILDER_H
22 
23 #include "llvm/CodeGen/MachineInstrBuilder.h"
24 
25 namespace llvm {
26 
27 /// addFrameReference - This function is used to add a reference to the base of
28 /// an abstract object on the stack frame of the current function.  This
29 /// reference has base register as the FrameIndex offset until it is resolved.
30 /// This allows a constant offset to be specified as well...
31 ///
32 static inline const MachineInstrBuilder&
33 addFrameReference(const MachineInstrBuilder &MIB, int FI, int Offset = 0,
34                   bool mem = true) {
35   if (mem)
36     return MIB.addImm(Offset).addFrameIndex(FI);
37   else
38     return MIB.addFrameIndex(FI).addImm(Offset);
39 }
40 
41 } // End llvm namespace
42 
43 #endif
44