MIPS: Move NumberToStringStub::GenerateLookupNumberStringCache to the MacroAssembler.

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 976 matching lines @@
   __ lw(a3, FieldMemOperand(lhs, HeapObject::kMapOffset));
   __ lbu(a2, FieldMemOperand(a2, Map::kBitFieldOffset));
   __ lbu(a3, FieldMemOperand(a3, Map::kBitFieldOffset));
   __ and_(a0, a2, a3);
   __ And(a0, a0, Operand(1 << Map::kIsUndetectable));
   __ Ret(USE_DELAY_SLOT);
   __ xori(v0, a0, 1 << Map::kIsUndetectable);
 }
 
 
-void NumberToStringStub::GenerateLookupNumberStringCache(MacroAssembler* masm,
-                                                         Register object,
-                                                         Register result,
-                                                         Register scratch1,
-                                                         Register scratch2,
-                                                         Register scratch3,
-                                                         Label* not_found) {
-  // Use of registers. Register result is used as a temporary.
-  Register number_string_cache = result;
-  Register mask = scratch3;
-
-  // Load the number string cache.
-  __ LoadRoot(number_string_cache, Heap::kNumberStringCacheRootIndex);
-
-  // Make the hash mask from the length of the number string cache. It
-  // contains two elements (number and string) for each cache entry.
-  __ lw(mask, FieldMemOperand(number_string_cache, FixedArray::kLengthOffset));
-  // Divide length by two (length is a smi).
-  __ sra(mask, mask, kSmiTagSize + 1);
-  __ Addu(mask, mask, -1);  // Make mask.
-
-  // Calculate the entry in the number string cache. The hash value in the
-  // number string cache for smis is just the smi value, and the hash for
-  // doubles is the xor of the upper and lower words. See
-  // Heap::GetNumberStringCache.
-  Isolate* isolate = masm->isolate();
-  Label is_smi;
-  Label load_result_from_cache;
-  __ JumpIfSmi(object, &is_smi);
-  __ CheckMap(object,
-              scratch1,
-              Heap::kHeapNumberMapRootIndex,
-              not_found,
-              DONT_DO_SMI_CHECK);
-
-  STATIC_ASSERT(8 == kDoubleSize);
-  __ Addu(scratch1,
-          object,
-          Operand(HeapNumber::kValueOffset - kHeapObjectTag));
-  __ lw(scratch2, MemOperand(scratch1, kPointerSize));
-  __ lw(scratch1, MemOperand(scratch1, 0));
-  __ Xor(scratch1, scratch1, Operand(scratch2));
-  __ And(scratch1, scratch1, Operand(mask));
-
-  // Calculate address of entry in string cache: each entry consists
-  // of two pointer sized fields.
-  __ sll(scratch1, scratch1, kPointerSizeLog2 + 1);
-  __ Addu(scratch1, number_string_cache, scratch1);
-
-  Register probe = mask;
-  __ lw(probe,
-          FieldMemOperand(scratch1, FixedArray::kHeaderSize));
-  __ JumpIfSmi(probe, not_found);
-  __ ldc1(f12, FieldMemOperand(object, HeapNumber::kValueOffset));
-  __ ldc1(f14, FieldMemOperand(probe, HeapNumber::kValueOffset));
-  __ BranchF(&load_result_from_cache, NULL, eq, f12, f14);
-  __ Branch(not_found);
-
-  __ bind(&is_smi);
-  Register scratch = scratch1;
-  __ sra(scratch, object, 1);   // Shift away the tag.
-  __ And(scratch, mask, Operand(scratch));
-
-  // Calculate address of entry in string cache: each entry consists
-  // of two pointer sized fields.
-  __ sll(scratch, scratch, kPointerSizeLog2 + 1);
-  __ Addu(scratch, number_string_cache, scratch);
-
-  // Check if the entry is the smi we are looking for.
-  __ lw(probe, FieldMemOperand(scratch, FixedArray::kHeaderSize));
-  __ Branch(not_found, ne, object, Operand(probe));
-
-  // Get the result from the cache.
-  __ bind(&load_result_from_cache);
-  __ lw(result,
-         FieldMemOperand(scratch, FixedArray::kHeaderSize + kPointerSize));
-
-  __ IncrementCounter(isolate->counters()->number_to_string_native(),
-                      1,
-                      scratch1,
-                      scratch2);
-}
-
-
 void NumberToStringStub::Generate(MacroAssembler* masm) {
   Label runtime;
 
   __ lw(a1, MemOperand(sp, 0));
 
   // Generate code to lookup number in the number string cache.
-  GenerateLookupNumberStringCache(masm, a1, v0, a2, a3, t0, &runtime);
+  __ LookupNumberStringCache(a1, v0, a2, a3, t0, &runtime);
   __ DropAndRet(1);
 
   __ bind(&runtime);
   // Handle number to string in the runtime system if not found in the cache.
   __ TailCallRuntime(Runtime::kNumberToString, 1, 1);
 }
 
 
 static void ICCompareStub_CheckInputType(MacroAssembler* masm,
                                          Register input,
@@ skipping 4758 matching lines @@
                                             Label* slow) {
   // First check if the argument is already a string.
   Label not_string, done;
   __ JumpIfSmi(arg, &not_string);
   __ GetObjectType(arg, scratch1, scratch1);
   __ Branch(&done, lt, scratch1, Operand(FIRST_NONSTRING_TYPE));
 
   // Check the number to string cache.
   __ bind(&not_string);
   // Puts the cached result into scratch1.
-  NumberToStringStub::GenerateLookupNumberStringCache(masm,
-                                                      arg,
-                                                      scratch1,
-                                                      scratch2,
-                                                      scratch3,
-                                                      scratch4,
-                                                      slow);
+  __ LookupNumberStringCache(arg, scratch1, scratch2, scratch3, scratch4, slow);
   __ mov(arg, scratch1);
   __ sw(arg, MemOperand(sp, stack_offset));
   __ bind(&done);
 }
 
 
 void ICCompareStub::GenerateSmis(MacroAssembler* masm) {
   ASSERT(state_ == CompareIC::SMI);
   Label miss;
   __ Or(a2, a1, a0);
@@ skipping 1398 matching lines @@
   __ bind(&fast_elements_case);
   GenerateCase(masm, FAST_ELEMENTS);
 }
 
 
 #undef __
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_MIPS