MIPS: Compile FastCloneShallowObjectStub using Crankshaft.

src/mips/code-stubs-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 21 matching lines @@
 #include "bootstrapper.h"
 #include "code-stubs.h"
 #include "codegen.h"
 #include "regexp-macro-assembler.h"
 #include "stub-cache.h"
 
 namespace v8 {
 namespace internal {
 
 
+void FastCloneShallowObjectStub::InitializeInterfaceDescriptor(
+    Isolate* isolate,
+    CodeStubInterfaceDescriptor* descriptor) {
+  static Register registers[] = { a3, a2, a1, a0 };
+  descriptor->register_param_count_ = 4;
+  descriptor->register_params_ = registers;
+  descriptor->stack_parameter_count_ = NULL;
+  descriptor->deoptimization_handler_ =
+      Runtime::FunctionForId(Runtime::kCreateObjectLiteralShallow)->entry;
+}
+
+
 void KeyedLoadFastElementStub::InitializeInterfaceDescriptor(
     Isolate* isolate,
     CodeStubInterfaceDescriptor* descriptor) {
   static Register registers[] = { a1, a0 };
   descriptor->register_param_count_ = 2;
   descriptor->register_params_ = registers;
   descriptor->deoptimization_handler_ =
       FUNCTION_ADDR(KeyedLoadIC_MissFromStubFailure);
 }
 
@@ skipping 439 matching lines @@
                                       &slow_case);
 
   // Return and remove the on-stack parameters.
   __ DropAndRet(3);
 
   __ bind(&slow_case);
   __ TailCallRuntime(Runtime::kCreateArrayLiteralShallow, 3, 1);
 }
 
 
-void FastCloneShallowObjectStub::Generate(MacroAssembler* masm) {
-  // Stack layout on entry:
-  //
-  // [sp]: object literal flags.
-  // [sp + kPointerSize]: constant properties.
-  // [sp + (2 * kPointerSize)]: literal index.
-  // [sp + (3 * kPointerSize)]: literals array.
-
-  // Load boilerplate object into a3 and check if we need to create a
-  // boilerplate.
-  Label slow_case;
-  __ lw(a3, MemOperand(sp, 3 * kPointerSize));
-  __ lw(a0, MemOperand(sp, 2 * kPointerSize));
-  __ Addu(a3, a3, Operand(FixedArray::kHeaderSize - kHeapObjectTag));
-  __ sll(t0, a0, kPointerSizeLog2 - kSmiTagSize);
-  __ Addu(a3, t0, a3);
-  __ lw(a3, MemOperand(a3));
-  __ LoadRoot(t0, Heap::kUndefinedValueRootIndex);
-  __ Branch(&slow_case, eq, a3, Operand(t0));
-
-  // Check that the boilerplate contains only fast properties and we can
-  // statically determine the instance size.
-  int size = JSObject::kHeaderSize + length_ * kPointerSize;
-  __ lw(a0, FieldMemOperand(a3, HeapObject::kMapOffset));
-  __ lbu(a0, FieldMemOperand(a0, Map::kInstanceSizeOffset));
-  __ Branch(&slow_case, ne, a0, Operand(size >> kPointerSizeLog2));
-
-  // Allocate the JS object and copy header together with all in-object
-  // properties from the boilerplate.
-  __ AllocateInNewSpace(size, v0, a1, a2, &slow_case, TAG_OBJECT);
-  for (int i = 0; i < size; i += kPointerSize) {
-    __ lw(a1, FieldMemOperand(a3, i));
-    __ sw(a1, FieldMemOperand(v0, i));
-  }
-
-  // Return and remove the on-stack parameters.
-  __ DropAndRet(4);
-
-  __ bind(&slow_case);
-  __ TailCallRuntime(Runtime::kCreateObjectLiteralShallow, 4, 1);
-}
-
-
 // Takes a Smi and converts to an IEEE 64 bit floating point value in two
 // registers.  The format is 1 sign bit, 11 exponent bits (biased 1023) and
 // 52 fraction bits (20 in the first word, 32 in the second).  Zeros is a
 // scratch register.  Destroys the source register.  No GC occurs during this
 // stub so you don't have to set up the frame.
 class ConvertToDoubleStub : public PlatformCodeStub {
  public:
   ConvertToDoubleStub(Register result_reg_1,
                       Register result_reg_2,
                       Register source_reg,
@@ skipping 7507 matching lines @@
   __ Pop(ra, t1, a1);
   __ Ret();
 }
 
 
 #undef __
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_MIPS