MIPS: Enable optimization of top-level code and generate deoptimization support lazily.

src/mips/lithium-mips.cc

Index: src/mips/lithium-mips.cc
diff --git a/src/mips/lithium-mips.cc b/src/mips/lithium-mips.cc
index 0bc222339f3bd4a16643c93135ae2f7f0a175c60..fd34edf8b0b057959c56f08f11016522b141a5d0 100644
--- a/src/mips/lithium-mips.cc
+++ b/src/mips/lithium-mips.cc
@@ -1124,6 +1124,11 @@ LInstruction* LChunkBuilder::DoOuterContext(HOuterContext* instr) {
 }
 
 
+LInstruction* LChunkBuilder::DoDeclareGlobals(HDeclareGlobals* instr) {
+  return MarkAsCall(new LDeclareGlobals, instr);
+}
+
+
 LInstruction* LChunkBuilder::DoGlobalObject(HGlobalObject* instr) {
   LOperand* context = UseRegisterAtStart(instr->value());
   return DefineAsRegister(new LGlobalObject(context));