Support old-space allocation in generated code (bump block only for now).

runtime/vm/intrinsifier_mips.cc

Index: runtime/vm/intrinsifier_mips.cc
===================================================================
--- runtime/vm/intrinsifier_mips.cc	(revision 40250)
+++ runtime/vm/intrinsifier_mips.cc	(working copy)
@@ -277,8 +277,8 @@
   __ LoadImmediate(TMP, -kObjectAlignment);                                    \
   __ and_(T2, T2, TMP);                                                        \
   Heap* heap = Isolate::Current()->heap();                                     \
-                                                                               \
-  __ LoadImmediate(V0, heap->TopAddress());                                    \
+  Heap::Space space = heap->SpaceForAllocation(cid);                           \
+  __ LoadImmediate(V0, heap->TopAddress(space));                               \
   __ lw(V0, Address(V0, 0));                                                   \
                                                                                \
   /* T2: allocation size. */                                                   \
@@ -289,16 +289,16 @@
   /* V0: potential new object start. */                                        \
   /* T1: potential next object start. */                                       \
   /* T2: allocation size. */                                                   \
-  __ LoadImmediate(T3, heap->EndAddress());                                    \
+  __ LoadImmediate(T3, heap->EndAddress(space));                               \
   __ lw(T3, Address(T3, 0));                                                   \
   __ BranchUnsignedGreaterEqual(T1, T3, &fall_through);                        \
                                                                                \
   /* Successfully allocated the object(s), now update top to point to */       \
   /* next object start and initialize the object. */                           \
-  __ LoadImmediate(T3, heap->TopAddress());                                    \
+  __ LoadImmediate(T3, heap->TopAddress(space));                               \
   __ sw(T1, Address(T3, 0));                                                   \
   __ AddImmediate(V0, kHeapObjectTag);                                         \
-  __ UpdateAllocationStatsWithSize(cid, T2, T4);                               \
+  __ UpdateAllocationStatsWithSize(cid, T2, T4, space);                        \
   /* Initialize the tags. */                                                   \
   /* V0: new object start as a tagged pointer. */                              \
   /* T1: new object end address. */                                            \
@@ -1432,8 +1432,8 @@
 
   Isolate* isolate = Isolate::Current();
   Heap* heap = isolate->heap();
-
-  __ LoadImmediate(T3, heap->TopAddress());
+  Heap::Space space = heap->SpaceForAllocation(kOneByteStringCid);
+  __ LoadImmediate(T3, heap->TopAddress(space));
   __ lw(V0, Address(T3, 0));
 
   // length_reg: allocation size.
@@ -1444,8 +1444,8 @@
   // V0: potential new object start.
   // T1: potential next object start.
   // T2: allocation size.
-  // T3: heap->TopAddress().
-  __ LoadImmediate(T4, heap->EndAddress());
+  // T3: heap->TopAddress(space).
+  __ LoadImmediate(T4, heap->EndAddress(space));
   __ lw(T4, Address(T4, 0));
   __ BranchUnsignedGreaterEqual(T1, T4, failure);
 
@@ -1454,7 +1454,7 @@
   __ sw(T1, Address(T3, 0));
   __ AddImmediate(V0, kHeapObjectTag);
 
-  __ UpdateAllocationStatsWithSize(kOneByteStringCid, T2, T3);
+  __ UpdateAllocationStatsWithSize(kOneByteStringCid, T2, T3, space);
 
   // Initialize the tags.
   // V0: new object start as a tagged pointer.