#include "llvm/Pass.h"
class TargetMachine;
+class MethodPass;
//----------------------------------------------------------------------------
// Entry point for register allocation for a module
//----------------------------------------------------------------------------
-class RegisterAllocation : public MethodPass {
- TargetMachine &Target;
-public:
- inline RegisterAllocation(TargetMachine &T) : Target(T) {}
- bool runOnMethod(Method *M);
-};
+MethodPass *getRegisterAllocator(TargetMachine &T);
#endif
clEnumValN(RA_DEBUG_Verbose, "v", "enable extra debug output"), 0);
-bool RegisterAllocation::runOnMethod(Method *M) {
- if (DEBUG_RA)
- cerr << "\n******************** Method "<< M->getName()
- << " ********************\n";
-
- MethodLiveVarInfo LVI(M); // Analyze live varaibles
- LVI.analyze();
+//----------------------------------------------------------------------------
+// RegisterAllocation pass front end...
+//----------------------------------------------------------------------------
+namespace {
+ class RegisterAllocator : public MethodPass {
+ TargetMachine &Target;
+ public:
+ inline RegisterAllocator(TargetMachine &T) : Target(T) {}
- PhyRegAlloc PRA(M, Target, &LVI); // allocate registers
- PRA.allocateRegisters();
-
- if (DEBUG_RA) cerr << "\nRegister allocation complete!\n";
- return false;
+ bool runOnMethod(Method *M) {
+ if (DEBUG_RA)
+ cerr << "\n******************** Method "<< M->getName()
+ << " ********************\n";
+
+ MethodLiveVarInfo LVI(M); // Analyze live varaibles
+ LVI.analyze();
+
+ PhyRegAlloc PRA(M, Target, &LVI); // allocate registers
+ PRA.allocateRegisters();
+
+ if (DEBUG_RA) cerr << "\nRegister allocation complete!\n";
+ return false;
+ }
+ };
}
+MethodPass *getRegisterAllocator(TargetMachine &T) {
+ return new RegisterAllocator(T);
+}
//----------------------------------------------------------------------------
// Constructor: Init local composite objects and create register classes.
clEnumValN(RA_DEBUG_Verbose, "v", "enable extra debug output"), 0);
-bool RegisterAllocation::runOnMethod(Method *M) {
- if (DEBUG_RA)
- cerr << "\n******************** Method "<< M->getName()
- << " ********************\n";
-
- MethodLiveVarInfo LVI(M); // Analyze live varaibles
- LVI.analyze();
+//----------------------------------------------------------------------------
+// RegisterAllocation pass front end...
+//----------------------------------------------------------------------------
+namespace {
+ class RegisterAllocator : public MethodPass {
+ TargetMachine &Target;
+ public:
+ inline RegisterAllocator(TargetMachine &T) : Target(T) {}
- PhyRegAlloc PRA(M, Target, &LVI); // allocate registers
- PRA.allocateRegisters();
-
- if (DEBUG_RA) cerr << "\nRegister allocation complete!\n";
- return false;
+ bool runOnMethod(Method *M) {
+ if (DEBUG_RA)
+ cerr << "\n******************** Method "<< M->getName()
+ << " ********************\n";
+
+ MethodLiveVarInfo LVI(M); // Analyze live varaibles
+ LVI.analyze();
+
+ PhyRegAlloc PRA(M, Target, &LVI); // allocate registers
+ PRA.allocateRegisters();
+
+ if (DEBUG_RA) cerr << "\nRegister allocation complete!\n";
+ return false;
+ }
+ };
}
+MethodPass *getRegisterAllocator(TargetMachine &T) {
+ return new RegisterAllocator(T);
+}
//----------------------------------------------------------------------------
// Constructor: Init local composite objects and create register classes.
//PM.add(new InstructionScheduling(*this));
- PM.add(new RegisterAllocation(*this));
+ PM.add(getRegisterAllocator(*this));
//PM.add(new OptimizeLeafProcedures());
//PM.add(new DeleteFallThroughBranches());