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 #include "llvm/Support/raw_ostream.h"
  19 using namespace llvm;
  20
  21 PIC16ConstantPoolValue::PIC16ConstantPoolValue(GlobalValue *gv, unsigned id,
  22                                                PIC16CP::PIC16CPKind k,
  23                                                unsigned char PCAdj,
  24                                                const char *Modif, bool AddCA)
  25   : MachineConstantPoolValue((const Type*)gv->getType()),
  26     GV(gv), S(NULL), LabelId(id), Kind(k), PCAdjust(PCAdj),
  27     Modifier(Modif), AddCurrentAddress(AddCA) {}
  28
  29 PIC16ConstantPoolValue::PIC16ConstantPoolValue(const char *s, unsigned id,
  30                                                PIC16CP::PIC16CPKind k,
  31                                                unsigned char PCAdj,
  32                                                const char *Modif, bool AddCA)
  33   : MachineConstantPoolValue((const Type*)Type::Int32Ty),
  34     GV(NULL), S(s), LabelId(id), Kind(k), PCAdjust(PCAdj),
  35     Modifier(Modif), AddCurrentAddress(AddCA) {}
  36
  37 PIC16ConstantPoolValue::PIC16ConstantPoolValue(GlobalValue *gv,
  38                                                PIC16CP::PIC16CPKind k,
  39                                                const char *Modif)
  40   : MachineConstantPoolValue((const Type*)Type::Int32Ty),
  41     GV(gv), S(NULL), LabelId(0), Kind(k), PCAdjust(0),
  42     Modifier(Modif) {}
  43
  44 int PIC16ConstantPoolValue::getExistingMachineCPValue(MachineConstantPool *CP,
  45                                                       unsigned Alignment) {
  46   unsigned AlignMask = (1 << Alignment)-1;
  47   const std::vector<MachineConstantPoolEntry> Constants = CP->getConstants();
  48   for (unsigned i = 0, e = Constants.size(); i != e; ++i) {
  49     if (Constants[i].isMachineConstantPoolEntry() &&
  50         (Constants[i].Offset & AlignMask) == 0) {
  51       PIC16ConstantPoolValue *CPV =
  52         (PIC16ConstantPoolValue *)Constants[i].Val.MachineCPVal;
  53       if (CPV->GV == GV &&
  54           CPV->S == S &&
  55           CPV->LabelId == LabelId &&
  56           CPV->Kind == Kind &&
  57           CPV->PCAdjust == PCAdjust)
  58         return i;
  59     }
  60   }
  61
  62   return -1;
  63 }
  64
  65 void
  66 PIC16ConstantPoolValue::AddSelectionDAGCSEId(FoldingSetNodeID &ID) {
  67   ID.AddPointer(GV);
  68   ID.AddPointer(S);
  69   ID.AddInteger(LabelId);
  70   ID.AddInteger((unsigned)Kind);
  71   ID.AddInteger(PCAdjust);
  72 }
  73
  74 void PIC16ConstantPoolValue::print(raw_ostream &O) const {
  75   if (GV)
  76     O << GV->getName();
  77   else
  78     O << S;
  79   if (isNonLazyPointer()) O << "$non_lazy_ptr";
  80   else if (isStub()) O << "$stub";
  81   if (Modifier) O << "(" << Modifier << ")";
  82   if (PCAdjust != 0) {
  83     O << "-(LPIC" << LabelId << "+"
  84       << (unsigned)PCAdjust;
  85     if (AddCurrentAddress)
  86       O << "-.";
  87     O << ")";
  88   }
  89 }