Revert 13105: "Enable stub generation using Hydrogen/Lithium."

src/arm/lithium-gap-resolver-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 153 matching lines @@
   ASSERT(moves_[index].destination()->Equals(moves_[root_index_].source()));
   ASSERT(!in_cycle_);
   in_cycle_ = true;
   LOperand* source = moves_[index].source();
   saved_destination_ = moves_[index].destination();
   if (source->IsRegister()) {
     __ mov(kSavedValueRegister, cgen_->ToRegister(source));
   } else if (source->IsStackSlot()) {
     __ ldr(kSavedValueRegister, cgen_->ToMemOperand(source));
   } else if (source->IsDoubleRegister()) {
-    CpuFeatures::Scope scope(VFP2);
     __ vmov(kScratchDoubleReg, cgen_->ToDoubleRegister(source));
   } else if (source->IsDoubleStackSlot()) {
-    CpuFeatures::Scope scope(VFP2);
     __ vldr(kScratchDoubleReg, cgen_->ToMemOperand(source));
   } else {
     UNREACHABLE();
   }
   // This move will be done by restoring the saved value to the destination.
   moves_[index].Eliminate();
 }
 
 
 void LGapResolver::RestoreValue() {
   ASSERT(in_cycle_);
   ASSERT(saved_destination_ != NULL);
 
   // Spilled value is in kSavedValueRegister or kSavedDoubleValueRegister.
   if (saved_destination_->IsRegister()) {
     __ mov(cgen_->ToRegister(saved_destination_), kSavedValueRegister);
   } else if (saved_destination_->IsStackSlot()) {
     __ str(kSavedValueRegister, cgen_->ToMemOperand(saved_destination_));
   } else if (saved_destination_->IsDoubleRegister()) {
-    CpuFeatures::Scope scope(VFP2);
     __ vmov(cgen_->ToDoubleRegister(saved_destination_), kScratchDoubleReg);
   } else if (saved_destination_->IsDoubleStackSlot()) {
-    CpuFeatures::Scope scope(VFP2);
     __ vstr(kScratchDoubleReg, cgen_->ToMemOperand(saved_destination_));
   } else {
     UNREACHABLE();
   }
 
   in_cycle_ = false;
   saved_destination_ = NULL;
 }
 
 
@@ skipping 15 matching lines @@
 
   } else if (source->IsStackSlot()) {
     MemOperand source_operand = cgen_->ToMemOperand(source);
     if (destination->IsRegister()) {
       __ ldr(cgen_->ToRegister(destination), source_operand);
     } else {
       ASSERT(destination->IsStackSlot());
       MemOperand destination_operand = cgen_->ToMemOperand(destination);
       if (in_cycle_) {
         if (!destination_operand.OffsetIsUint12Encodable()) {
-          CpuFeatures::Scope scope(VFP2);
-            // ip is overwritten while saving the value to the destination.
+          // ip is overwritten while saving the value to the destination.
           // Therefore we can't use ip.  It is OK if the read from the source
           // destroys ip, since that happens before the value is read.
           __ vldr(kScratchDoubleReg.low(), source_operand);
           __ vstr(kScratchDoubleReg.low(), destination_operand);
         } else {
           __ ldr(ip, source_operand);
           __ str(ip, destination_operand);
         }
       } else {
         __ ldr(kSavedValueRegister, source_operand);
@@ skipping 17 matching lines @@
         __ mov(kSavedValueRegister,
                Operand(cgen_->ToInteger32(constant_source)));
       } else {
         __ LoadObject(kSavedValueRegister,
                       cgen_->ToHandle(constant_source));
       }
       __ str(kSavedValueRegister, cgen_->ToMemOperand(destination));
     }
 
   } else if (source->IsDoubleRegister()) {
-    CpuFeatures::Scope scope(VFP2);
-    DwVfpRegister source_register = cgen_->ToDoubleRegister(source);
+    DoubleRegister source_register = cgen_->ToDoubleRegister(source);
     if (destination->IsDoubleRegister()) {
       __ vmov(cgen_->ToDoubleRegister(destination), source_register);
     } else {
       ASSERT(destination->IsDoubleStackSlot());
       __ vstr(source_register, cgen_->ToMemOperand(destination));
     }
 
   } else if (source->IsDoubleStackSlot()) {
-    CpuFeatures::Scope scope(VFP2);
-      MemOperand source_operand = cgen_->ToMemOperand(source);
+    MemOperand source_operand = cgen_->ToMemOperand(source);
     if (destination->IsDoubleRegister()) {
       __ vldr(cgen_->ToDoubleRegister(destination), source_operand);
     } else {
       ASSERT(destination->IsDoubleStackSlot());
       MemOperand destination_operand = cgen_->ToMemOperand(destination);
       if (in_cycle_) {
         // kSavedDoubleValueRegister was used to break the cycle,
         // but kSavedValueRegister is free.
         MemOperand source_high_operand =
             cgen_->ToHighMemOperand(source);
@@ skipping 12 matching lines @@
     UNREACHABLE();
   }
 
   moves_[index].Eliminate();
 }
 
 
 #undef __
 
 } }  // namespace v8::internal