| Dan Gohman | f17a25c | 2007-07-18 16:29:46 +0000 | [diff] [blame^] | 1 | //===- ARMConstantPoolValue.cpp - ARM constantpool value --------*- C++ -*-===// |
| 2 | // |
| 3 | // The LLVM Compiler Infrastructure |
| 4 | // |
| 5 | // This file was developed by Evan Cheng and is distributed under the |
| 6 | // University of Illinois Open Source License. See LICENSE.TXT for details. |
| 7 | // |
| 8 | //===----------------------------------------------------------------------===// |
| 9 | // |
| 10 | // This file implements the ARM specific constantpool value class. |
| 11 | // |
| 12 | //===----------------------------------------------------------------------===// |
| 13 | |
| 14 | #include "ARMConstantPoolValue.h" |
| 15 | #include "llvm/ADT/FoldingSet.h" |
| 16 | #include "llvm/GlobalValue.h" |
| 17 | #include "llvm/Type.h" |
| 18 | using namespace llvm; |
| 19 | |
| 20 | ARMConstantPoolValue::ARMConstantPoolValue(GlobalValue *gv, unsigned id, |
| 21 | ARMCP::ARMCPKind k, |
| 22 | unsigned char PCAdj, |
| 23 | const char *Modif, |
| 24 | 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 | ARMConstantPoolValue::ARMConstantPoolValue(const char *s, unsigned id, |
| 30 | ARMCP::ARMCPKind k, |
| 31 | unsigned char PCAdj, |
| 32 | const char *Modif, |
| 33 | bool AddCA) |
| 34 | : MachineConstantPoolValue((const Type*)Type::Int32Ty), |
| 35 | GV(NULL), S(s), LabelId(id), Kind(k), PCAdjust(PCAdj), |
| 36 | Modifier(Modif), AddCurrentAddress(AddCA) {} |
| 37 | |
| 38 | ARMConstantPoolValue::ARMConstantPoolValue(GlobalValue *gv, |
| 39 | ARMCP::ARMCPKind k, |
| 40 | const char *Modif) |
| 41 | : MachineConstantPoolValue((const Type*)Type::Int32Ty), |
| 42 | GV(gv), S(NULL), LabelId(0), Kind(k), PCAdjust(0), |
| 43 | Modifier(Modif) {} |
| 44 | |
| 45 | int ARMConstantPoolValue::getExistingMachineCPValue(MachineConstantPool *CP, |
| 46 | unsigned Alignment) { |
| 47 | unsigned AlignMask = (1 << Alignment)-1; |
| 48 | const std::vector<MachineConstantPoolEntry> Constants = CP->getConstants(); |
| 49 | for (unsigned i = 0, e = Constants.size(); i != e; ++i) { |
| 50 | if (Constants[i].isMachineConstantPoolEntry() && |
| 51 | (Constants[i].Offset & AlignMask) == 0) { |
| 52 | ARMConstantPoolValue *CPV = |
| 53 | (ARMConstantPoolValue *)Constants[i].Val.MachineCPVal; |
| 54 | if (CPV->GV == GV && |
| 55 | CPV->S == S && |
| 56 | CPV->LabelId == LabelId && |
| 57 | CPV->Kind == Kind && |
| 58 | CPV->PCAdjust == PCAdjust) |
| 59 | return i; |
| 60 | } |
| 61 | } |
| 62 | |
| 63 | return -1; |
| 64 | } |
| 65 | |
| 66 | void |
| 67 | ARMConstantPoolValue::AddSelectionDAGCSEId(FoldingSetNodeID &ID) { |
| 68 | ID.AddPointer(GV); |
| 69 | ID.AddPointer(S); |
| 70 | ID.AddInteger(LabelId); |
| 71 | ID.AddInteger((unsigned)Kind); |
| 72 | ID.AddInteger(PCAdjust); |
| 73 | } |
| 74 | |
| 75 | void ARMConstantPoolValue::print(std::ostream &O) const { |
| 76 | if (GV) |
| 77 | O << GV->getName(); |
| 78 | else |
| 79 | O << S; |
| 80 | if (isNonLazyPointer()) O << "$non_lazy_ptr"; |
| 81 | else if (isStub()) O << "$stub"; |
| 82 | if (Modifier) O << "(" << Modifier << ")"; |
| 83 | if (PCAdjust != 0) { |
| 84 | O << "-(LPIC" << LabelId << "+" |
| 85 | << (unsigned)PCAdjust; |
| 86 | if (AddCurrentAddress) |
| 87 | O << "-."; |
| 88 | O << ")"; |
| 89 | } |
| 90 | } |