X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=lib%2FCodeGen%2FPhysRegTracker.h;h=1f10c4bdaf9ccc48bff2e527e9e9408db837b49e;hb=245146b58a2188eb69bcb34fc2bdf57ebbcfb278;hp=d2ff82a237d59b7a59b9caa6a505ced7c1cd7f98;hpb=534f545ef15a22533933af853894f3516ba2eed5;p=oota-llvm.git

diff --git a/lib/CodeGen/PhysRegTracker.h b/lib/CodeGen/PhysRegTracker.h
index d2ff82a237d..1f10c4bdaf9 100644
--- a/lib/CodeGen/PhysRegTracker.h
+++ b/lib/CodeGen/PhysRegTracker.h
@@ -2,8 +2,8 @@
 //
 //                     The LLVM Compiler Infrastructure
 //
-// This file was developed by the LLVM research group and is distributed under
-// the University of Illinois Open Source License. See LICENSE.TXT for details.
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
 //
@@ -17,59 +17,52 @@
 #ifndef LLVM_CODEGEN_PHYSREGTRACKER_H
 #define LLVM_CODEGEN_PHYSREGTRACKER_H
 
-#include "llvm/CodeGen/MachineFunction.h"
-#include <vector>
+#include "llvm/Target/TargetRegisterInfo.h"
 
 namespace llvm {
 
     class PhysRegTracker {
-    private:
-        const MRegisterInfo* mri_;
+        const TargetRegisterInfo* tri_;
         std::vector<unsigned> regUse_;
 
     public:
-        PhysRegTracker(MachineFunction* mf)
-            : mri_(mf ? mf->getTarget().getRegisterInfo() : NULL) {
-            if (mri_) {
-                regUse_.assign(mri_->getNumRegs(), 0);
-            }
+        explicit PhysRegTracker(const TargetRegisterInfo& tri)
+            : tri_(&tri),
+              regUse_(tri_->getNumRegs(), 0) {
         }
 
         PhysRegTracker(const PhysRegTracker& rhs)
-            : mri_(rhs.mri_),
+            : tri_(rhs.tri_),
               regUse_(rhs.regUse_) {
         }
 
         const PhysRegTracker& operator=(const PhysRegTracker& rhs) {
-            mri_ = rhs.mri_;
+            tri_ = rhs.tri_;
             regUse_ = rhs.regUse_;
             return *this;
         }
 
         void addRegUse(unsigned physReg) {
-            assert(MRegisterInfo::isPhysicalRegister(physReg) &&
+            assert(TargetRegisterInfo::isPhysicalRegister(physReg) &&
                    "should be physical register!");
             ++regUse_[physReg];
-            for (const unsigned* as = mri_->getAliasSet(physReg); *as; ++as) {
-                physReg = *as;
-                ++regUse_[physReg];
-            }
+            for (const unsigned* as = tri_->getAliasSet(physReg); *as; ++as)
+                ++regUse_[*as];
         }
 
         void delRegUse(unsigned physReg) {
-            assert(MRegisterInfo::isPhysicalRegister(physReg) &&
+            assert(TargetRegisterInfo::isPhysicalRegister(physReg) &&
                    "should be physical register!");
             assert(regUse_[physReg] != 0);
             --regUse_[physReg];
-            for (const unsigned* as = mri_->getAliasSet(physReg); *as; ++as) {
-                physReg = *as;
-                assert(regUse_[physReg] != 0);
-                --regUse_[physReg];
+            for (const unsigned* as = tri_->getAliasSet(physReg); *as; ++as) {
+                assert(regUse_[*as] != 0);
+                --regUse_[*as];
             }
         }
 
         bool isRegAvail(unsigned physReg) const {
-            assert(MRegisterInfo::isPhysicalRegister(physReg) &&
+            assert(TargetRegisterInfo::isPhysicalRegister(physReg) &&
                    "should be physical register!");
             return regUse_[physReg] == 0;
         }