Reland "Merge cellspace into old pointer space"

src/ia32/code-stubs-ia32.cc

Index: src/ia32/code-stubs-ia32.cc
diff --git a/src/ia32/code-stubs-ia32.cc b/src/ia32/code-stubs-ia32.cc
index 0b7fc8ad5776f728ae388c428123b425137799fe..90e3672a91d8315adb4074d3c2049c9dfa74a8fa 100644
--- a/src/ia32/code-stubs-ia32.cc
+++ b/src/ia32/code-stubs-ia32.cc
@@ -2760,6 +2760,12 @@ void InstanceofStub::Generate(MacroAssembler* masm) {
     }
     __ mov(scratch, Operand(scratch, kDeltaToCmpImmediate));
     __ mov(Operand(scratch, 0), map);
+    __ push(map);
+    // Scratch points at the cell payload. Calculate the start of the object.
+    __ sub(scratch, Immediate(Cell::kValueOffset - 1));
+    __ RecordWriteField(scratch, Cell::kValueOffset, map, function,
+                        kDontSaveFPRegs, OMIT_REMEMBERED_SET, OMIT_SMI_CHECK);
+    __ pop(map);
   }
 
   // Loop through the prototype chain of the object looking for the function