VM: Load allocation-top and -end via Thread.

runtime/vm/stub_code_mips.cc

 // Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "vm/globals.h"
 #if defined(TARGET_ARCH_MIPS)
 
 #include "vm/assembler.h"
 #include "vm/code_generator.h"
 #include "vm/compiler.h"
@@ skipping 1140 matching lines @@
   if (is_cls_parameterized) {
     __ lw(T1, Address(SP, 0 * kWordSize));
     // T1: type arguments.
   }
   if (FLAG_inline_alloc && Heap::IsAllocatableInNewSpace(instance_size) &&
       !cls.trace_allocation()) {
     Label slow_case;
     // Allocate the object and update top to point to
     // next object start and initialize the allocated object.
     // T1: instantiated type arguments (if is_cls_parameterized).
-    Heap* heap = Isolate::Current()->heap();
     Heap::Space space = Heap::SpaceForAllocation(cls.id());
-    __ LoadImmediate(T5, heap->TopAddress(space));
-    __ lw(T2, Address(T5));
+    __ lw(T5, Address(THR, Thread::heap_offset()));
+    __ lw(T2, Address(T5, Heap::TopOffset(space)));
     __ LoadImmediate(T4, instance_size);
     __ addu(T3, T2, T4);
     // Check if the allocation fits into the remaining space.
     // T2: potential new object start.
     // T3: potential next object start.
-    __ LoadImmediate(TMP, heap->EndAddress(space));
-    __ lw(CMPRES1, Address(TMP));
+    // T5: heap.
+    __ lw(CMPRES1, Address(T5, Heap::EndOffset(space)));
     if (FLAG_use_slow_path) {
       __ b(&slow_case);
     } else {
       __ BranchUnsignedGreaterEqual(T3, CMPRES1, &slow_case);
     }
     // Successfully allocated the object(s), now update top to point to
     // next object start and initialize the object.
-    __ sw(T3, Address(T5));
-    __ UpdateAllocationStats(cls.id(), T5, space);
+    __ sw(T3, Address(T5, Heap::TopOffset(space)));
+    __ UpdateAllocationStats(cls.id(), T5, space, /* inline_isolate = */ false);
 
     // T2: new object start.
     // T3: next object start.
     // T1: new object type arguments (if is_cls_parameterized).
     // Set the tags.
     uword tags = 0;
     tags = RawObject::SizeTag::update(instance_size, tags);
     ASSERT(cls.id() != kIllegalCid);
     tags = RawObject::ClassIdTag::update(cls.id(), tags);
     __ LoadImmediate(T0, tags);
@@ skipping 1095 matching lines @@
 // Result:
 //  T1: entry point.
 void StubCode::GenerateMegamorphicLookupStub(Assembler* assembler) {
   EmitMegamorphicLookup(assembler, T0, T1, T1);
   __ Ret();
 }
 
 }  // namespace dart
 
 #endif  // defined TARGET_ARCH_MIPS