Add support for emitting ARM file attributes.

[oota-llvm.git] / lib / Target / ARM / ARMConstantPoolValue.h

diff --git a/lib/Target/ARM/ARMConstantPoolValue.h b/lib/Target/ARM/ARMConstantPoolValue.h
index caf8d54f16334a38d953519c400791967de57e4e..3119b54563dee59dc65788e30753dfee3e085b0f 100644 (file)
--- a/lib/Target/ARM/ARMConstantPoolValue.h
+++ b/lib/Target/ARM/ARMConstantPoolValue.h
@@ -15,63 +15,87 @@
 #define LLVM_TARGET_ARM_CONSTANTPOOLVALUE_H
 
 #include "llvm/CodeGen/MachineConstantPool.h"
+#include <cstddef>
 
 namespace llvm {
 
+class Constant;
+class BlockAddress;
 class GlobalValue;
+class LLVMContext;
 
 namespace ARMCP {
   enum ARMCPKind {
     CPValue,
-    CPNonLazyPtr,
-    CPStub
+    CPExtSymbol,
+    CPBlockAddress,
+    CPLSDA
   };
 }
 
 /// ARMConstantPoolValue - ARM specific constantpool value. This is used to
-/// represent PC relative displacement between the address of the load
-/// instruction and the global value being loaded, i.e. (&GV-(LPIC+8)).
+/// 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 {
-  GlobalValue *GV;         // GlobalValue being loaded.
+  const Constant *CVal;    // Constant being loaded.
   const char *S;           // ExtSymbol being loaded.
   unsigned LabelId;        // Label id of the load.
-  ARMCP::ARMCPKind Kind;   // non_lazy_ptr or stub?
-  unsigned char PCAdjust;  // Extra adjustment if constantpool is pc relative.
+  ARMCP::ARMCPKind Kind;   // Kind of constant.
+  unsigned char PCAdjust;  // Extra adjustment if constantpool is pc-relative.
                            // 8 for ARM, 4 for Thumb.
   const char *Modifier;    // GV modifier i.e. (&GV(modifier)-(LPIC+8))
   bool AddCurrentAddress;
 
 public:
-  ARMConstantPoolValue(GlobalValue *gv, unsigned id,
+  ARMConstantPoolValue(const Constant *cval, unsigned id,
                        ARMCP::ARMCPKind Kind = ARMCP::CPValue,
                        unsigned char PCAdj = 0, const char *Modifier = NULL,
                        bool AddCurrentAddress = false);
-  ARMConstantPoolValue(const char *s, unsigned id,
-                       ARMCP::ARMCPKind Kind = ARMCP::CPValue,
+  ARMConstantPoolValue(LLVMContext &C, const char *s, unsigned id,
                        unsigned char PCAdj = 0, const char *Modifier = NULL,
                        bool AddCurrentAddress = false);
-  ARMConstantPoolValue(GlobalValue *GV, ARMCP::ARMCPKind Kind,
-                       const char *Modifier);
-
+  ARMConstantPoolValue(const GlobalValue *GV, const char *Modifier);
+  ARMConstantPoolValue();
+  ~ARMConstantPoolValue();
 
-  GlobalValue *getGV() const { return GV; }
+  const GlobalValue *getGV() const;
   const char *getSymbol() const { return S; }
+  const BlockAddress *getBlockAddress() const;
   const char *getModifier() const { return Modifier; }
   bool hasModifier() const { return Modifier != NULL; }
   bool mustAddCurrentAddress() const { return AddCurrentAddress; }
   unsigned getLabelId() const { return LabelId; }
-  bool isNonLazyPointer() const { return Kind == ARMCP::CPNonLazyPtr; }
-  bool isStub() const { return Kind == ARMCP::CPStub; }
   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 {
+    // FIXME: This is conservatively claiming that these entries require a
+    // relocation, we may be able to do better than this.
+    return 2;
+  }
 
   virtual int getExistingMachineCPValue(MachineConstantPool *CP,
                                         unsigned Alignment);
 
   virtual void AddSelectionDAGCSEId(FoldingSetNodeID &ID);
 
-  virtual void print(raw_ostream &O) const;
+  /// 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