[llvm-commits] CVS: llvm/include/llvm/PassSupport.h

Jim Laskey jlaskey at apple.com
Thu Jul 27 15:05:15 CDT 2006



Changes in directory llvm/include/llvm:

PassSupport.h updated: 1.24 -> 1.25
---
Log message:

Working toward registration of register allocators.


---
Diffs of the changes:  (+70 -0)

 PassSupport.h |   70 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 files changed, 70 insertions(+)


Index: llvm/include/llvm/PassSupport.h
diff -u llvm/include/llvm/PassSupport.h:1.24 llvm/include/llvm/PassSupport.h:1.25
--- llvm/include/llvm/PassSupport.h:1.24	Wed Jul 26 11:18:00 2006
+++ llvm/include/llvm/PassSupport.h	Thu Jul 27 15:04:59 2006
@@ -368,6 +368,76 @@
   virtual void passEnumerate(const PassInfo *P) {}
 };
 
+
+//===---------------------------------------------------------------------===//
+///
+/// RegisterRegAlloc class - Track the registration of register allocators.
+///
+class RegisterRegAlloc {
+
+public:
+
+  typedef FunctionPass *(*FunctionPassCtor)();
+
+private:
+
+  static RegisterRegAlloc *List;        // Linked list of register allocators.
+  
+  RegisterRegAlloc *Next;               // Next allocation scheme in list.
+  const char *Name;                     // Name of register allocator.
+  const char *Description;              // Description string.
+  FunctionPassCtor Ctor;                // Function to construct register
+                                        // allocator pass.
+public:
+
+  RegisterRegAlloc(const char *N, const char *D, FunctionPassCtor C)
+  : Name(N)
+  , Description(D)
+  , Ctor(C) {
+    Add();
+  }
+  
+  ~RegisterRegAlloc() {
+    Remove();
+  }
+  
+  
+  // Accessors
+  const char *getName()        const { return Name; }
+  const char *getDescription() const { return Description; }
+  FunctionPassCtor getCtor()   const { return Ctor; }
+  
+  
+  /// Add - Adds a register allocator to the registration list.
+  ///
+  void Add() {
+    Next = List;
+    List = this;
+  }
+  
+
+  /// Remove - Removes a register allocator from the registration list.
+  ///
+  void Remove() {
+    for (RegisterRegAlloc **RA = &List; *RA; RA = &(*RA)->Next) {
+      if (*RA == this) {
+        *RA = Next;
+        break;
+      }
+    }
+  }
+  
+  
+  /// Find - Finds a register allocator in registration list.
+  ///
+  static FunctionPassCtor Find(const char *N);
+
+#ifndef NDEBUG  
+  static void print();
+#endif
+};
+
+
 } // End llvm namespace
 
 #endif






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