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Diffstat (limited to 'contrib/llvm/lib/Target/ARM/ARMConstantPoolValue.h')
-rw-r--r-- | contrib/llvm/lib/Target/ARM/ARMConstantPoolValue.h | 122 |
1 files changed, 122 insertions, 0 deletions
diff --git a/contrib/llvm/lib/Target/ARM/ARMConstantPoolValue.h b/contrib/llvm/lib/Target/ARM/ARMConstantPoolValue.h new file mode 100644 index 0000000..d008811 --- /dev/null +++ b/contrib/llvm/lib/Target/ARM/ARMConstantPoolValue.h @@ -0,0 +1,122 @@ +//===- ARMConstantPoolValue.h - ARM constantpool value ----------*- C++ -*-===// +// +// The LLVM Compiler Infrastructure +// +// This file is distributed under the University of Illinois Open Source +// License. See LICENSE.TXT for details. +// +//===----------------------------------------------------------------------===// +// +// This file implements the ARM specific constantpool value class. +// +//===----------------------------------------------------------------------===// + +#ifndef LLVM_TARGET_ARM_CONSTANTPOOLVALUE_H +#define LLVM_TARGET_ARM_CONSTANTPOOLVALUE_H + +#include "llvm/CodeGen/MachineConstantPool.h" +#include "llvm/Support/ErrorHandling.h" +#include <cstddef> + +namespace llvm { + +class Constant; +class BlockAddress; +class GlobalValue; +class LLVMContext; + +namespace ARMCP { + enum ARMCPKind { + CPValue, + CPExtSymbol, + CPBlockAddress, + CPLSDA + }; + + enum ARMCPModifier { + no_modifier, + TLSGD, + GOT, + GOTOFF, + GOTTPOFF, + TPOFF + }; +} + +/// ARMConstantPoolValue - ARM specific constantpool value. This is used to +/// represent PC-relative displacement between the address of the load +/// instruction and the constant being loaded, i.e. (&GV-(LPIC+8)). +class ARMConstantPoolValue : public MachineConstantPoolValue { + const Constant *CVal; // Constant being loaded. + const char *S; // ExtSymbol being loaded. + unsigned LabelId; // Label id of the load. + ARMCP::ARMCPKind Kind; // Kind of constant. + unsigned char PCAdjust; // Extra adjustment if constantpool is pc-relative. + // 8 for ARM, 4 for Thumb. + ARMCP::ARMCPModifier Modifier; // GV modifier i.e. (&GV(modifier)-(LPIC+8)) + bool AddCurrentAddress; + +public: + ARMConstantPoolValue(const Constant *cval, unsigned id, + ARMCP::ARMCPKind Kind = ARMCP::CPValue, + unsigned char PCAdj = 0, + ARMCP::ARMCPModifier Modifier = ARMCP::no_modifier, + bool AddCurrentAddress = false); + ARMConstantPoolValue(LLVMContext &C, const char *s, unsigned id, + unsigned char PCAdj = 0, + ARMCP::ARMCPModifier Modifier = ARMCP::no_modifier, + bool AddCurrentAddress = false); + ARMConstantPoolValue(const GlobalValue *GV, ARMCP::ARMCPModifier Modifier); + ARMConstantPoolValue(); + ~ARMConstantPoolValue(); + + const GlobalValue *getGV() const; + const char *getSymbol() const { return S; } + const BlockAddress *getBlockAddress() const; + ARMCP::ARMCPModifier getModifier() const { return Modifier; } + const char *getModifierText() const { + switch (Modifier) { + default: llvm_unreachable("Unknown modifier!"); + // FIXME: Are these case sensitive? It'd be nice to lower-case all the + // strings if that's legal. + case ARMCP::no_modifier: return "none"; + case ARMCP::TLSGD: return "tlsgd"; + case ARMCP::GOT: return "GOT"; + case ARMCP::GOTOFF: return "GOTOFF"; + case ARMCP::GOTTPOFF: return "gottpoff"; + case ARMCP::TPOFF: return "tpoff"; + } + } + bool hasModifier() const { return Modifier != ARMCP::no_modifier; } + bool mustAddCurrentAddress() const { return AddCurrentAddress; } + unsigned getLabelId() const { return LabelId; } + unsigned char getPCAdjustment() const { return PCAdjust; } + bool isGlobalValue() const { return Kind == ARMCP::CPValue; } + bool isExtSymbol() const { return Kind == ARMCP::CPExtSymbol; } + bool isBlockAddress() { return Kind == ARMCP::CPBlockAddress; } + bool isLSDA() { return Kind == ARMCP::CPLSDA; } + + virtual unsigned getRelocationInfo() const { return 2; } + + virtual int getExistingMachineCPValue(MachineConstantPool *CP, + unsigned Alignment); + + virtual void AddSelectionDAGCSEId(FoldingSetNodeID &ID); + + /// hasSameValue - Return true if this ARM constpool value + /// can share the same constantpool entry as another ARM constpool value. + bool hasSameValue(ARMConstantPoolValue *ACPV); + + void print(raw_ostream *O) const { if (O) print(*O); } + void print(raw_ostream &O) const; + void dump() const; +}; + +inline raw_ostream &operator<<(raw_ostream &O, const ARMConstantPoolValue &V) { + V.print(O); + return O; +} + +} // End llvm namespace + +#endif |