[v8-dev] ARM: safepoints frame optimization

src/arm/lithium-arm.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 1376 matching lines @@
                       (instr->left()->RangeCanInclude(kMinInt) &&
                        instr->right()->RangeCanInclude(-1) &&
                        instr->CheckFlag(HValue::kBailoutOnMinusZero)) ||
                       (instr->left()->CanBeNegative() &&
                        instr->CanBeZero() &&
                        instr->CheckFlag(HValue::kBailoutOnMinusZero)));
     return can_deopt ? AssignEnvironment(result) : result;
   } else {
     LOperand* dividend = UseRegister(instr->left());
     LOperand* divisor = UseRegister(instr->right());
-    LOperand* temp = FixedTemp(d10);
-    LOperand* temp2 = FixedTemp(d11);
+    LOperand* temp = FixedTemp(d3);
+    LOperand* temp2 = FixedTemp(d4);
     LInstruction* result =
         DefineAsRegister(new(zone()) LModI(dividend, divisor, temp, temp2));
     bool can_deopt = (instr->right()->CanBeZero() ||
                       (instr->left()->CanBeNegative() &&
                        instr->CanBeZero() &&
                        instr->CheckFlag(HValue::kBailoutOnMinusZero)));
     return can_deopt ? AssignEnvironment(result) : result;
   }
 }
 
@@ skipping 453 matching lines @@
       ASSERT(to.IsInteger32());
       LOperand* value = NULL;
       LInstruction* res = NULL;
       HValue* val = instr->value();
       if (val->type().IsSmi() || val->representation().IsSmi()) {
         value = UseRegisterAtStart(val);
         res = DefineAsRegister(new(zone()) LSmiUntag(value, false));
       } else {
         value = UseRegister(val);
         LOperand* temp1 = TempRegister();
-        LOperand* temp2 = FixedTemp(d11);
+        LOperand* temp2 = FixedTemp(d3);
         res = DefineSameAsFirst(new(zone()) LTaggedToI(value,
                                                        temp1,
                                                        temp2));
         res = AssignEnvironment(res);
       }
       return res;
     }
   } else if (from.IsDouble()) {
     if (to.IsTagged()) {
       info()->MarkAsDeferredCalling();
@@ skipping 106 matching lines @@
   Representation input_rep = value->representation();
   LOperand* reg = UseRegister(value);
   if (input_rep.IsDouble()) {
     return DefineAsRegister(new(zone()) LClampDToUint8(reg));
   } else if (input_rep.IsInteger32()) {
     return DefineAsRegister(new(zone()) LClampIToUint8(reg));
   } else {
     ASSERT(input_rep.IsSmiOrTagged());
     // Register allocator doesn't (yet) support allocation of double
     // temps. Reserve d1 explicitly.
-    LClampTToUint8* result = new(zone()) LClampTToUint8(reg, FixedTemp(d11));
+    LClampTToUint8* result = new(zone()) LClampTToUint8(reg, FixedTemp(d3));
     return AssignEnvironment(DefineAsRegister(result));
   }
 }
 
 
 LInstruction* LChunkBuilder::DoDoubleBits(HDoubleBits* instr) {
   HValue* value = instr->value();
   ASSERT(value->representation().IsDouble());
   return DefineAsRegister(new(zone()) LDoubleBits(UseRegister(value)));
 }
@@ skipping 544 matching lines @@
 }
 
 
 LInstruction* LChunkBuilder::DoLoadFieldByIndex(HLoadFieldByIndex* instr) {
   LOperand* object = UseRegister(instr->object());
   LOperand* index = UseRegister(instr->index());
   return DefineAsRegister(new(zone()) LLoadFieldByIndex(object, index));
 }
 
 } }  // namespace v8::internal