MIPS: Re-land Crankshaft-generated KeyedLoad stubs.

src/mips/lithium-gap-resolver-mips.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 154 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(kLithiumScratchReg, cgen_->ToRegister(source));
   } else if (source->IsStackSlot()) {
     __ lw(kLithiumScratchReg, cgen_->ToMemOperand(source));
   } else if (source->IsDoubleRegister()) {
+    CpuFeatures::Scope scope(FPU);
     __ mov_d(kLithiumScratchDouble, cgen_->ToDoubleRegister(source));
   } else if (source->IsDoubleStackSlot()) {
+    CpuFeatures::Scope scope(FPU);
     __ ldc1(kLithiumScratchDouble, 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 kLithiumScratchReg or kLithiumScratchDouble.
   if (saved_destination_->IsRegister()) {
     __ mov(cgen_->ToRegister(saved_destination_), kLithiumScratchReg);
   } else if (saved_destination_->IsStackSlot()) {
     __ sw(kLithiumScratchReg, cgen_->ToMemOperand(saved_destination_));
   } else if (saved_destination_->IsDoubleRegister()) {
+    CpuFeatures::Scope scope(FPU);
     __ mov_d(cgen_->ToDoubleRegister(saved_destination_),
             kLithiumScratchDouble);
   } else if (saved_destination_->IsDoubleStackSlot()) {
+    CpuFeatures::Scope scope(FPU);
     __ sdc1(kLithiumScratchDouble,
             cgen_->ToMemOperand(saved_destination_));
   } else {
     UNREACHABLE();
   }
 
   in_cycle_ = false;
   saved_destination_ = NULL;
 }
 
@@ skipping 16 matching lines @@
 
   } else if (source->IsStackSlot()) {
     MemOperand source_operand = cgen_->ToMemOperand(source);
     if (destination->IsRegister()) {
       __ lw(cgen_->ToRegister(destination), source_operand);
     } else {
       ASSERT(destination->IsStackSlot());
       MemOperand destination_operand = cgen_->ToMemOperand(destination);
       if (in_cycle_) {
         if (!destination_operand.OffsetIsInt16Encodable()) {
+          CpuFeatures::Scope scope(FPU);
           // 'at' is overwritten while saving the value to the destination.
           // Therefore we can't use 'at'.  It is OK if the read from the source
           // destroys 'at', since that happens before the value is read.
           // This uses only a single reg of the double reg-pair.
           __ lwc1(kLithiumScratchDouble, source_operand);
           __ swc1(kLithiumScratchDouble, destination_operand);
         } else {
           __ lw(at, source_operand);
           __ sw(at, destination_operand);
         }
@@ skipping 19 matching lines @@
         __ li(kLithiumScratchReg,
               Operand(cgen_->ToInteger32(constant_source)));
       } else {
         __ LoadObject(kLithiumScratchReg,
                       cgen_->ToHandle(constant_source));
       }
       __ sw(kLithiumScratchReg, cgen_->ToMemOperand(destination));
     }
 
   } else if (source->IsDoubleRegister()) {
+    CpuFeatures::Scope scope(FPU);
     DoubleRegister source_register = cgen_->ToDoubleRegister(source);
     if (destination->IsDoubleRegister()) {
       __ mov_d(cgen_->ToDoubleRegister(destination), source_register);
     } else {
       ASSERT(destination->IsDoubleStackSlot());
       MemOperand destination_operand = cgen_->ToMemOperand(destination);
       __ sdc1(source_register, destination_operand);
     }
 
   } else if (source->IsDoubleStackSlot()) {
+    CpuFeatures::Scope scope(FPU);
     MemOperand source_operand = cgen_->ToMemOperand(source);
     if (destination->IsDoubleRegister()) {
       __ ldc1(cgen_->ToDoubleRegister(destination), source_operand);
     } else {
       ASSERT(destination->IsDoubleStackSlot());
       MemOperand destination_operand = cgen_->ToMemOperand(destination);
       if (in_cycle_) {
         // kLithiumScratchDouble was used to break the cycle,
         // but kLithiumScratchReg is free.
         MemOperand source_high_operand =
@@ skipping 13 matching lines @@
     UNREACHABLE();
   }
 
   moves_[index].Eliminate();
 }
 
 
 #undef __
 
 } }  // namespace v8::internal