MIPS: port Merge experimental/gc branch to the bleeding_edge.

src/mips/stub-cache-mips.cc

 // Copyright 2011 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 414 matching lines @@
   if (index < 0) {
     // Set the property straight into the object.
     int offset = object->map()->instance_size() + (index * kPointerSize);
     __ sw(a0, FieldMemOperand(receiver_reg, offset));
 
     // Skip updating write barrier if storing a smi.
     __ JumpIfSmi(a0, &exit, scratch);
 
     // Update the write barrier for the array address.
     // Pass the now unused name_reg as a scratch register.
-    __ RecordWrite(receiver_reg, Operand(offset), name_reg, scratch);
+    __ mov(name_reg, a0);
+    __ RecordWriteField(receiver_reg,
+                        offset,
+                        name_reg,
+                        scratch,
+                        kRAHasNotBeenSaved,
+                        kDontSaveFPRegs);
   } else {
     // Write to the properties array.
     int offset = index * kPointerSize + FixedArray::kHeaderSize;
     // Get the properties array.
     __ lw(scratch, FieldMemOperand(receiver_reg, JSObject::kPropertiesOffset));
     __ sw(a0, FieldMemOperand(scratch, offset));
 
     // Skip updating write barrier if storing a smi.
     __ JumpIfSmi(a0, &exit);
 
     // Update the write barrier for the array address.
     // Ok to clobber receiver_reg and name_reg, since we return.
-    __ RecordWrite(scratch, Operand(offset), name_reg, receiver_reg);
+    __ mov(name_reg, a0);
+    __ RecordWriteField(scratch,
+                        offset,
+                        name_reg,
+                        receiver_reg,
+                        kRAHasNotBeenSaved,
+                        kDontSaveFPRegs);
   }
 
   // Return the value (register v0).
   __ bind(&exit);
   __ mov(v0, a0);
   __ Ret();
 }
 
 
 void StubCompiler::GenerateLoadMiss(MacroAssembler* masm, Code::Kind kind) {
@@ skipping 1123 matching lines @@
     __ lw(elements, FieldMemOperand(receiver, JSArray::kElementsOffset));
 
     // Check that the elements are in fast mode and writable.
     __ CheckMap(elements,
                 v0,
                 Heap::kFixedArrayMapRootIndex,
                 &call_builtin,
                 DONT_DO_SMI_CHECK);
 
     if (argc == 1) {  // Otherwise fall through to call the builtin.
-      Label exit, with_write_barrier, attempt_to_grow_elements;
+      Label exit, attempt_to_grow_elements;
 
       // Get the array's length into v0 and calculate new length.
       __ lw(v0, FieldMemOperand(receiver, JSArray::kLengthOffset));
       STATIC_ASSERT(kSmiTagSize == 1);
       STATIC_ASSERT(kSmiTag == 0);
       __ Addu(v0, v0, Operand(Smi::FromInt(argc)));
 
       // Get the element's length.
       __ lw(t0, FieldMemOperand(elements, FixedArray::kLengthOffset));
 
       // Check if we could survive without allocation.
       __ Branch(&attempt_to_grow_elements, gt, v0, Operand(t0));
 
       // Save new length.
       __ sw(v0, FieldMemOperand(receiver, JSArray::kLengthOffset));
 
       // Push the element.
       __ lw(t0, MemOperand(sp, (argc - 1) * kPointerSize));
       // We may need a register containing the address end_elements below,
       // so write back the value in end_elements.
       __ sll(end_elements, v0, kPointerSizeLog2 - kSmiTagSize);
       __ Addu(end_elements, elements, end_elements);
       const int kEndElementsOffset =
           FixedArray::kHeaderSize - kHeapObjectTag - argc * kPointerSize;
       __ Addu(end_elements, end_elements, kEndElementsOffset);
       __ sw(t0, MemOperand(end_elements));
 
       // Check for a smi.
+      Label with_write_barrier;
       __ JumpIfNotSmi(t0, &with_write_barrier);
       __ bind(&exit);
       __ Drop(argc + 1);
       __ Ret();
 
       __ bind(&with_write_barrier);
-      __ InNewSpace(elements, t0, eq, &exit);
-      __ RecordWriteHelper(elements, end_elements, t0);
+      __ RecordWrite(elements,
+                     end_elements,
+                     t0,
+                     kRAHasNotBeenSaved,
+                     kDontSaveFPRegs,
+                     EMIT_REMEMBERED_SET,
+                     OMIT_SMI_CHECK);
       __ Drop(argc + 1);
       __ Ret();
 
       __ bind(&attempt_to_grow_elements);
       // v0: array's length + 1.
       // t0: elements' length.
 
       if (!FLAG_inline_new) {
         __ Branch(&call_builtin);
       }
@@ skipping 1086 matching lines @@
   // to update the property details in the property dictionary of the
   // global object. We bail out to the runtime system to do that.
   __ li(t0, Operand(Handle<JSGlobalPropertyCell>(cell)));
   __ LoadRoot(t1, Heap::kTheHoleValueRootIndex);
   __ lw(t2, FieldMemOperand(t0, JSGlobalPropertyCell::kValueOffset));
   __ Branch(&miss, eq, t1, Operand(t2));
 
   // Store the value in the cell.
   __ sw(a0, FieldMemOperand(t0, JSGlobalPropertyCell::kValueOffset));
   __ mov(v0, a0);  // Stored value must be returned in v0.
+
+  // This trashes a0 but the value is returned in v0 anyway.
+  __ RecordWriteField(t0,
+                      JSGlobalPropertyCell::kValueOffset,
+                      a0,
+                      a2,
+                      kRAHasNotBeenSaved,
+                      kDontSaveFPRegs,
+                      OMIT_REMEMBERED_SET);
+
   Counters* counters = masm()->isolate()->counters();
   __ IncrementCounter(counters->named_store_global_inline(), 1, a1, a3);
   __ Ret();
 
   // Handle store cache miss.
   __ bind(&miss);
   __ IncrementCounter(counters->named_store_global_inline_miss(), 1, a1, a3);
   Handle<Code> ic = masm()->isolate()->builtins()->StoreIC_Miss();
   __ Jump(ic, RelocInfo::CODE_TARGET);
 
@@ skipping 1608 matching lines @@
   } else {
     __ lw(scratch, FieldMemOperand(elements_reg, FixedArray::kLengthOffset));
   }
   // Compare smis.
   __ Branch(&miss_force_generic, hs, key_reg, Operand(scratch));
 
   __ Addu(scratch,
           elements_reg, Operand(FixedArray::kHeaderSize - kHeapObjectTag));
   STATIC_ASSERT(kSmiTag == 0 && kSmiTagSize < kPointerSizeLog2);
   __ sll(scratch2, key_reg, kPointerSizeLog2 - kSmiTagSize);
-  __ Addu(scratch3, scratch2, scratch);
-  __ sw(value_reg, MemOperand(scratch3));
-  __ RecordWrite(scratch, Operand(scratch2), receiver_reg , elements_reg);
+  __ Addu(scratch, scratch, scratch2);
+  __ sw(value_reg, MemOperand(scratch));
+  __ mov(receiver_reg, value_reg);
+  __ RecordWrite(elements_reg,  // Object.
+                 scratch,       // Address.
+                 receiver_reg,  // Value.
+                 kRAHasNotBeenSaved,
+                 kDontSaveFPRegs);
 
   // value_reg (a0) is preserved.
   // Done.
   __ Ret();
 
   __ bind(&miss_force_generic);
   Handle<Code> ic =
       masm->isolate()->builtins()->KeyedStoreIC_MissForceGeneric();
   __ Jump(ic, RelocInfo::CODE_TARGET);
 }
@@ skipping 126 matching lines @@
       masm->isolate()->builtins()->KeyedStoreIC_MissForceGeneric();
   __ Jump(ic, RelocInfo::CODE_TARGET);
 }
 
 
 #undef __
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_MIPS