lib/Target/PIC16/PIC16ConstantPoolValue.cpp

   1 //===- PIC16ConstantPoolValue.cpp - PIC16 constantpool value --------------===//
   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 implements the PIC16 specific constantpool value class.
  11 //
  12 //===----------------------------------------------------------------------===//
  13
  14 #include "PIC16ConstantPoolValue.h"
  15 #include "llvm/ADT/FoldingSet.h"
  16 #include "llvm/GlobalValue.h"
  17 #include "llvm/Type.h"
  18 using namespace llvm;
  19
  20 PIC16ConstantPoolValue::PIC16ConstantPoolValue(GlobalValue *gv, unsigned id,
  21                                                PIC16CP::PIC16CPKind k,
  22                                                unsigned char PCAdj,
  23                                                const char *Modif, bool AddCA)
  24   : MachineConstantPoolValue((const Type*)gv->getType()),
  25     GV(gv), S(NULL), LabelId(id), Kind(k), PCAdjust(PCAdj),
  26     Modifier(Modif), AddCurrentAddress(AddCA) {}
  27
  28 PIC16ConstantPoolValue::PIC16ConstantPoolValue(const char *s, unsigned id,
  29                                                PIC16CP::PIC16CPKind k,
  30                                                unsigned char PCAdj,
  31                                                const char *Modif, bool AddCA)
  32   : MachineConstantPoolValue((const Type*)Type::Int32Ty),
  33     GV(NULL), S(s), LabelId(id), Kind(k), PCAdjust(PCAdj),
  34     Modifier(Modif), AddCurrentAddress(AddCA) {}
  35
  36 PIC16ConstantPoolValue::PIC16ConstantPoolValue(GlobalValue *gv,
  37                                                PIC16CP::PIC16CPKind k,
  38                                                const char *Modif)
  39   : MachineConstantPoolValue((const Type*)Type::Int32Ty),
  40     GV(gv), S(NULL), LabelId(0), Kind(k), PCAdjust(0),
  41     Modifier(Modif) {}
  42
  43 int PIC16ConstantPoolValue::getExistingMachineCPValue(MachineConstantPool *CP,
  44                                                       unsigned Alignment) {
  45   unsigned AlignMask = (1 << Alignment)-1;
  46   const std::vector<MachineConstantPoolEntry> Constants = CP->getConstants();
  47   for (unsigned i = 0, e = Constants.size(); i != e; ++i) {
  48     if (Constants[i].isMachineConstantPoolEntry() &&
  49         (Constants[i].Offset & AlignMask) == 0) {
  50       PIC16ConstantPoolValue *CPV =
  51         (PIC16ConstantPoolValue *)Constants[i].Val.MachineCPVal;
  52       if (CPV->GV == GV &&
  53           CPV->S == S &&
  54           CPV->LabelId == LabelId &&
  55           CPV->Kind == Kind &&
  56           CPV->PCAdjust == PCAdjust)
  57         return i;
  58     }
  59   }
  60
  61   return -1;
  62 }
  63
  64 void
  65 PIC16ConstantPoolValue::AddSelectionDAGCSEId(FoldingSetNodeID &ID) {
  66   ID.AddPointer(GV);
  67   ID.AddPointer(S);
  68   ID.AddInteger(LabelId);
  69   ID.AddInteger((unsigned)Kind);
  70   ID.AddInteger(PCAdjust);
  71 }
  72
  73 void PIC16ConstantPoolValue::print(std::ostream &O) const {
  74   if (GV)
  75     O << GV->getName();
  76   else
  77     O << S;
  78   if (isNonLazyPointer()) O << "$non_lazy_ptr";
  79   else if (isStub()) O << "$stub";
  80   if (Modifier) O << "(" << Modifier << ")";
  81   if (PCAdjust != 0) {
  82     O << "-(LPIC" << LabelId << "+"
  83       << (unsigned)PCAdjust;
  84     if (AddCurrentAddress)
  85       O << "-.";
  86     O << ")";
  87   }
  88 }