[v8-dev] ARM: Make double registers low/high safe

src/arm/stub-cache-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 1795 matching lines @@
       __ add(r0, r0, Operand(Smi::FromInt(argc)));
 
       // Get the elements' length.
       __ ldr(r4, FieldMemOperand(elements, FixedArray::kLengthOffset));
 
       // Check if we could survive without allocation.
       __ cmp(r0, r4);
       __ b(gt, &call_builtin);
 
       __ ldr(r4, MemOperand(sp, (argc - 1) * kPointerSize));
-      __ StoreNumberToDoubleElements(r4, r0, elements, r5,
+      __ StoreNumberToDoubleElements(r4, r0, elements, r5, d0,
                                      &call_builtin, argc * kDoubleSize);
 
       // Save new length.
       __ str(r0, FieldMemOperand(receiver, JSArray::kLengthOffset));
 
       // Check for a smi.
       __ Drop(argc + 1);
       __ Ret();
 
       __ bind(&with_write_barrier);
@@ skipping 1360 matching lines @@
   //  -- r1     : receiver
   // -----------------------------------
   TailCallBuiltin(masm, Builtins::kKeyedLoadIC_MissForceGeneric);
 }
 
 
 static void GenerateSmiKeyCheck(MacroAssembler* masm,
                                 Register key,
                                 Register scratch0,
                                 DwVfpRegister double_scratch0,
-                                DwVfpRegister double_scratch1,
+                                LowDwVfpRegister double_scratch1,
                                 Label* fail) {
   Label key_ok;
   // Check for smi or a smi inside a heap number.  We convert the heap
   // number and check if the conversion is exact and fits into the smi
   // range.
   __ JumpIfSmi(key, &key_ok);
   __ CheckMap(key,
               scratch0,
               Heap::kHeapNumberMapRootIndex,
               fail,
@@ skipping 388 matching lines @@
   // indexes.
   __ cmp(key_reg, scratch1);
   if (IsGrowStoreMode(store_mode)) {
     __ b(hs, &grow);
   } else {
     __ b(hs, &miss_force_generic);
   }
 
   __ bind(&finish_store);
   __ StoreNumberToDoubleElements(value_reg, key_reg, elements_reg,
-                                 scratch1, &transition_elements_kind);
+                                 scratch1, d0, &transition_elements_kind);
   __ Ret();
 
   // Handle store cache miss, replacing the ic with the generic stub.
   __ bind(&miss_force_generic);
   TailCallBuiltin(masm, Builtins::kKeyedStoreIC_MissForceGeneric);
 
   __ bind(&transition_elements_kind);
   TailCallBuiltin(masm, Builtins::kKeyedStoreIC_Miss);
 
   if (is_js_array && IsGrowStoreMode(store_mode)) {
@@ skipping 27 matching lines @@
     // Initialize the new FixedDoubleArray.
     __ LoadRoot(scratch1, Heap::kFixedDoubleArrayMapRootIndex);
     __ str(scratch1, FieldMemOperand(elements_reg, JSObject::kMapOffset));
     __ mov(scratch1,
            Operand(Smi::FromInt(JSArray::kPreallocatedArrayElements)));
     __ str(scratch1,
            FieldMemOperand(elements_reg, FixedDoubleArray::kLengthOffset));
 
     __ mov(scratch1, elements_reg);
     __ StoreNumberToDoubleElements(value_reg, key_reg, scratch1,
-                                   scratch2, &transition_elements_kind);
+                                   scratch2, d0, &transition_elements_kind);
 
     __ mov(scratch1, Operand(kHoleNanLower32));
     __ mov(scratch2, Operand(kHoleNanUpper32));
     for (int i = 1; i < JSArray::kPreallocatedArrayElements; i++) {
       int offset = FixedDoubleArray::OffsetOfElementAt(i);
       __ str(scratch1, FieldMemOperand(elements_reg, offset));
       __ str(scratch2, FieldMemOperand(elements_reg, offset + kPointerSize));
     }
 
     // Install the new backing store in the JSArray.
@@ skipping 26 matching lines @@
     TailCallBuiltin(masm, Builtins::kKeyedStoreIC_Slow);
   }
 }
 
 
 #undef __
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_ARM