eliminate some extraneous methods in SDNode

[oota-llvm.git] / include / llvm / CodeGen / MachineRelocation.h

diff --git a/include/llvm/CodeGen/MachineRelocation.h b/include/llvm/CodeGen/MachineRelocation.h
index c23b999e2ec916755576b6a1c3bac6c39670aaea..65a1f10fe3185f0e5fd8ea1634c06c48ca609607 100644 (file)
--- a/include/llvm/CodeGen/MachineRelocation.h
+++ b/include/llvm/CodeGen/MachineRelocation.h
@@ -19,6 +19,7 @@
 
 namespace llvm {
 class GlobalValue;
+class MachineBasicBlock;
 
 /// MachineRelocation - This represents a target-specific relocation value,
 /// produced by the code emitter.  This relocation is resolved after the has
@@ -38,8 +39,10 @@ class MachineRelocation {
   enum AddressType {
     isResult,         // Relocation has be transformed into its result pointer.
     isGV,             // The Target.GV field is valid.
+    isBB,             // Relocation of BB address.
     isExtSym,         // The Target.ExtSym field is valid.
-    isConstPool,      // The Target.ConstPool field is valid.
+    isConstPool,      // Relocation of constant pool address.
+    isJumpTable,      // Relocation of jump table address.
     isGOTIndex        // The Target.GOTIndex field is valid.
   };
   
@@ -51,11 +54,12 @@ class MachineRelocation {
   intptr_t ConstantVal;
 
   union {
-    void *Result;        // If this has been resolved to a resolved pointer
-    GlobalValue *GV;     // If this is a pointer to an LLVM global
-    const char *ExtSym;  // If this is a pointer to a named symbol
-    unsigned ConstPool;  // In this is a pointer to a constant pool entry
-    unsigned GOTIndex;   // Index in the GOT of this symbol/global
+    void *Result;           // If this has been resolved to a resolved pointer
+    GlobalValue *GV;        // If this is a pointer to an LLVM global
+    MachineBasicBlock *MBB; // If this is a pointer to a LLVM BB
+    const char *ExtSym;     // If this is a pointer to a named symbol
+    unsigned Index;         // Constant pool / jump table index
+    unsigned GOTIndex;      // Index in the GOT of this symbol/global
   } Target;
 
   unsigned TargetReloType : 6; // The target relocation ID.
@@ -64,6 +68,13 @@ class MachineRelocation {
   bool GOTRelative        : 1; // Should this relocation be relative to the GOT?
 
 public:
+ // Relocation types used in a generic implementation.  Currently, relocation
+ // entries for all things use the generic VANILLA type until they are refined
+ // into target relocation types.
+  enum RelocationType {
+    VANILLA
+  };
+  
   /// MachineRelocation::getGV - Return a relocation entry for a GlobalValue.
   ///
   static MachineRelocation getGV(intptr_t offset, unsigned RelocationType, 
@@ -82,6 +93,22 @@ public:
     return Result;
   }
 
+  /// MachineRelocation::getBB - Return a relocation entry for a BB.
+  ///
+  static MachineRelocation getBB(intptr_t offset,unsigned RelocationType,
+                                 MachineBasicBlock *MBB, intptr_t cst = 0) {
+    assert((RelocationType & ~63) == 0 && "Relocation type too large!");
+    MachineRelocation Result;
+    Result.Offset = offset;
+    Result.ConstantVal = cst;
+    Result.TargetReloType = RelocationType;
+    Result.AddrType = isBB;
+    Result.DoesntNeedFnStub = false;
+    Result.GOTRelative = false;
+    Result.Target.MBB = MBB;
+    return Result;
+  }
+
   /// MachineRelocation::getExtSym - Return a relocation entry for an external
   /// symbol, like "free".
   ///
@@ -113,7 +140,24 @@ public:
     Result.AddrType = isConstPool;
     Result.DoesntNeedFnStub = false;
     Result.GOTRelative = false;
-    Result.Target.ConstPool = CPI;
+    Result.Target.Index = CPI;
+    return Result;
+  }
+
+  /// MachineRelocation::getJumpTable - Return a relocation entry for a jump
+  /// table entry.
+  ///
+  static MachineRelocation getJumpTable(intptr_t offset,unsigned RelocationType,
+                                        unsigned JTI, intptr_t cst = 0) {
+    assert((RelocationType & ~63) == 0 && "Relocation type too large!");
+    MachineRelocation Result;
+    Result.Offset = offset;
+    Result.ConstantVal = cst;
+    Result.TargetReloType = RelocationType;
+    Result.AddrType = isJumpTable;
+    Result.DoesntNeedFnStub = false;
+    Result.GOTRelative = false;
+    Result.Target.Index = JTI;
     return Result;
   }
 
@@ -136,12 +180,25 @@ public:
     return ConstantVal;
   }
 
+  /// setConstantVal - Set the constant value associated with this relocation.
+  /// This is often an offset from the symbol.
+  ///
+  void setConstantVal(intptr_t val) {
+    ConstantVal = val;
+  }
+
   /// isGlobalValue - Return true if this relocation is a GlobalValue, as
   /// opposed to a constant string.
   bool isGlobalValue() const {
     return AddrType == isGV;
   }
 
+  /// isBasicBlock - Return true if this relocation is a basic block reference.
+  ///
+  bool isBasicBlock() const {
+    return AddrType == isBB;
+  }
+
   /// isString - Return true if this is a constant string.
   ///
   bool isString() const {
@@ -154,6 +211,12 @@ public:
     return AddrType == isConstPool;
   }
 
+  /// isJumpTableIndex - Return true if this is a jump table reference.
+  ///
+  bool isJumpTableIndex() const {
+    return AddrType == isJumpTable;
+  }
+
   /// isGOTRelative - Return true the target wants the index into the GOT of
   /// the symbol rather than the address of the symbol.
   bool isGOTRelative() const {
@@ -176,6 +239,11 @@ public:
     return Target.GV;
   }
 
+  MachineBasicBlock *getBasicBlock() const {
+    assert(isBasicBlock() && "This is not a basic block reference!");
+    return Target.MBB;
+  }
+
   /// getString - If this is a string value, return the string reference.
   ///
   const char *getString() const {
@@ -187,7 +255,14 @@ public:
   /// the index into the constant pool.
   unsigned getConstantPoolIndex() const {
     assert(isConstantPoolIndex() && "This is not a constant pool reference!");
-    return Target.ConstPool;
+    return Target.Index;
+  }
+
+  /// getJumpTableIndex - If this is a jump table reference, return
+  /// the index into the jump table.
+  unsigned getJumpTableIndex() const {
+    assert(isJumpTableIndex() && "This is not a jump table reference!");
+    return Target.Index;
   }
 
   /// getResultPointer - Once this has been resolved to point to an actual