VM: Add infrastructure to support deferred generation of unoptimized code.

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 570 matching lines @@
   // Code above cannot cause GC.
   __ addiu(SP, FP, Immediate(-kWordSize));
   __ lw(RA, Address(SP, 2 * kWordSize));
   __ lw(FP, Address(SP, 1 * kWordSize));
   __ lw(PP, Address(SP, 0 * kWordSize));
   __ addiu(SP, SP, Immediate(4 * kWordSize));
 
   // Frame is fully rewritten at this point and it is safe to perform a GC.
   // Materialize any objects that were deferred by FillFrame because they
   // require allocation.
-  __ EnterStubFrame();
+  // Enter stub frame with loading PP. The caller's PP is not materialized yet.
+  __ EnterStubFrame(true);
   if (preserve_result) {
     __ Push(T1);  // Preserve result, it will be GC-d here.
   }
   __ PushObject(Smi::ZoneHandle());  // Space for the result.
   __ CallRuntime(kDeoptimizeMaterializeRuntimeEntry, 0);
   // Result tells stub how many bytes to remove from the expression stack
   // of the bottom-most frame. They were used as materialization arguments.
   __ Pop(T1);
   if (preserve_result) {
     __ Pop(V0);  // Restore result.
@@ skipping 1649 matching lines @@
   const Register right = T0;
   __ lw(left, Address(SP, 1 * kWordSize));
   __ lw(right, Address(SP, 0 * kWordSize));
   GenerateIdenticalWithNumberCheckStub(assembler, left, right, temp1, temp2);
   __ Ret();
 }
 
 }  // namespace dart
 
 #endif  // defined TARGET_ARCH_MIPS