Refactoring: Separate out the ARM constant pool Constant from the ARM constant

pool value.

It's not used right now, but will be soon.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@140933 91177308-0d34-0410-b5e6-96231b3b80d8

2 files changed, 94 insertions, 6 deletions

diff --git a/lib/Target/ARM/ARMConstantPoolValue.cpp b/lib/Target/ARM/ARMConstantPoolValue.cpp
index 8dae56ab5e..f65dc7c8ac 100644
--- a/lib/Target/ARM/ARMConstantPoolValue.cpp
+++ b/lib/Target/ARM/ARMConstantPoolValue.cpp
@@ -22,6 +22,18 @@
 #include <cstdlib>
 using namespace llvm;
 
+//===----------------------------------------------------------------------===//
+// ARMConstantPoolValue
+//===----------------------------------------------------------------------===//
+
+ARMConstantPoolValue::ARMConstantPoolValue(Type *Ty, unsigned id,
+                                           ARMCP::ARMCPKind kind,
+                                           unsigned char PCAdj,
+                                           ARMCP::ARMCPModifier modifier,
+                                           bool addCurrentAddress)
+  : MachineConstantPoolValue(Ty), LabelId(id), Kind(kind), PCAdjust(PCAdj),
+    Modifier(modifier), AddCurrentAddress(addCurrentAddress) {}
+
 ARMConstantPoolValue::ARMConstantPoolValue(const Constant *cval, unsigned id,
                                            ARMCP::ARMCPKind K,
                                            unsigned char PCAdj,
@@ -145,7 +157,6 @@ void ARMConstantPoolValue::dump() const {
   errs() << "  " << *this;
 }
 
-
 void ARMConstantPoolValue::print(raw_ostream &O) const {
   if (CVal)
     O << CVal->getName();
@@ -160,3 +171,44 @@ void ARMConstantPoolValue::print(raw_ostream &O) const {
     O << ")";
   }
 }
+
+//===----------------------------------------------------------------------===//
+// ARMConstantPoolConstant
+//===----------------------------------------------------------------------===//
+
+ARMConstantPoolConstant::ARMConstantPoolConstant(const Constant *C,
+                                                 unsigned ID,
+                                                 ARMCP::ARMCPKind Kind,
+                                                 unsigned char PCAdj,
+                                                 ARMCP::ARMCPModifier Modifier,
+                                                 bool AddCurrentAddress)
+  : ARMConstantPoolValue((Type*)C->getType(), ID, Kind, PCAdj, Modifier,
+                         AddCurrentAddress),
+    CVal(C) {}
+
+ARMConstantPoolConstant *
+ARMConstantPoolConstant::Create(const Constant *C, unsigned ID) {
+  return new ARMConstantPoolConstant(C, ID, ARMCP::CPValue, 0,
+                                     ARMCP::no_modifier, false);
+}
+
+const GlobalValue *ARMConstantPoolConstant::getGV() const {
+  return dyn_cast<GlobalValue>(CVal);
+}
+
+bool ARMConstantPoolConstant::hasSameValue(ARMConstantPoolValue *ACPV) {
+  const ARMConstantPoolConstant *ACPC = dyn_cast<ARMConstantPoolConstant>(ACPV);
+
+  return (ACPC ? ACPC->CVal == CVal : true) &&
+    ARMConstantPoolValue::hasSameValue(ACPV);
+}
+
+void ARMConstantPoolConstant::addSelectionDAGCSEId(FoldingSetNodeID &ID) {
+  ID.AddPointer(CVal);
+  ARMConstantPoolValue::addSelectionDAGCSEId(ID);
+}
+
+void ARMConstantPoolConstant::print(raw_ostream &O) const {
+  O << CVal->getName();
+  ARMConstantPoolValue::print(O);
+}
diff --git a/lib/Target/ARM/ARMConstantPoolValue.h b/lib/Target/ARM/ARMConstantPoolValue.h
index cd7f8dc60f..5a6180830b 100644
--- a/lib/Target/ARM/ARMConstantPoolValue.h
+++ b/lib/Target/ARM/ARMConstantPoolValue.h
@@ -59,6 +59,11 @@ class ARMConstantPoolValue : public MachineConstantPoolValue {
   ARMCP::ARMCPModifier Modifier;   // GV modifier i.e. (&GV(modifier)-(LPIC+8))
   bool AddCurrentAddress;
 
+protected:
+  ARMConstantPoolValue(Type *Ty, unsigned id, ARMCP::ARMCPKind Kind,
+                       unsigned char PCAdj, ARMCP::ARMCPModifier Modifier,
+                       bool AddCurrentAddress);
+
 public:
   ARMConstantPoolValue(const Constant *cval, unsigned id,
                        ARMCP::ARMCPKind Kind = ARMCP::CPValue,
@@ -94,7 +99,7 @@ public:
 
   bool isGlobalValue() const { return Kind == ARMCP::CPValue; }
   bool isExtSymbol() const { return Kind == ARMCP::CPExtSymbol; }
-  bool isBlockAddress() { return Kind == ARMCP::CPBlockAddress; }
+  bool isBlockAddress() const { return Kind == ARMCP::CPBlockAddress; }
   bool isLSDA() const { return Kind == ARMCP::CPLSDA; }
   bool isMachineBasicBlock() { return Kind == ARMCP::CPMachineBasicBlock; }
 
@@ -105,13 +110,15 @@ public:
 
   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);
+  /// hasSameValue - Return true if this ARM constpool value can share the same
+  /// constantpool entry as another ARM constpool value.
+  virtual bool hasSameValue(ARMConstantPoolValue *ACPV);
 
+  virtual void print(raw_ostream &O) const;
   void print(raw_ostream *O) const { if (O) print(*O); }
-  void print(raw_ostream &O) const;
   void dump() const;
+
+  static bool classof(const ARMConstantPoolValue *) { return true; }
 };
 
 inline raw_ostream &operator<<(raw_ostream &O, const ARMConstantPoolValue &V) {
@@ -119,6 +126,35 @@ inline raw_ostream &operator<<(raw_ostream &O, const ARMConstantPoolValue &V) {
   return O;
 }
 
+/// ARMConstantPoolConstant - ARM-specific constant pool values for Constants,
+/// Functions, and BlockAddresses.
+class ARMConstantPoolConstant : public ARMConstantPoolValue {
+  const Constant *CVal;         // Constant being loaded.
+
+  ARMConstantPoolConstant(const Constant *C,
+                          unsigned ID,
+                          ARMCP::ARMCPKind Kind,
+                          unsigned char PCAdj,
+                          ARMCP::ARMCPModifier Modifier,
+                          bool AddCurrentAddress);
+public:
+  static ARMConstantPoolConstant *Create(const Constant *C, unsigned ID);
+
+  const GlobalValue *getGV() const;
+
+  /// hasSameValue - Return true if this ARM constpool value can share the same
+  /// constantpool entry as another ARM constpool value.
+  virtual bool hasSameValue(ARMConstantPoolValue *ACPV);
+
+  virtual void addSelectionDAGCSEId(FoldingSetNodeID &ID);
+
+  virtual void print(raw_ostream &O) const;
+  static bool classof(const ARMConstantPoolValue *APV) {
+    return APV->isGlobalValue() || APV->isBlockAddress() || APV->isLSDA();
+  }
+  static bool classof(const ARMConstantPoolConstant *) { return true; }
+};
+
 } // End llvm namespace
 
 #endif