MIPS: Reduce size of LIR instruction by one word and remove dead code.

src/mips/lithium-codegen-mips.cc

Index: src/mips/lithium-codegen-mips.cc
diff --git a/src/mips/lithium-codegen-mips.cc b/src/mips/lithium-codegen-mips.cc
index ccda5268417c9e040e646735c4cbee729d759740..762e15cee1eb59c45a7d3110ef491c5fb687f852 100644
--- a/src/mips/lithium-codegen-mips.cc
+++ b/src/mips/lithium-codegen-mips.cc
@@ -2139,8 +2139,7 @@ void LCodeGen::DoDeferredInstanceOfKnownGlobal(LInstanceOfKnownGlobal* instr,
                   RelocInfo::CODE_TARGET,
                   instr,
                   RECORD_SAFEPOINT_WITH_REGISTERS_AND_NO_ARGUMENTS);
-  ASSERT(instr->HasDeoptimizationEnvironment());
-  LEnvironment* env = instr->deoptimization_environment();
+  LEnvironment* env = instr->GetDeferredLazyDeoptimizationEnvironment();
   safepoints_.RecordLazyDeoptimizationIndex(env->deoptimization_index());
   // Put the result value into the result register slot and
   // restore all registers.
@@ -2772,7 +2771,7 @@ void LCodeGen::DoApplyArguments(LApplyArguments* instr) {
   __ sll(scratch, length, 2);
 
   __ bind(&invoke);
-  ASSERT(instr->HasPointerMap() && instr->HasDeoptimizationEnvironment());
+  ASSERT(instr->HasPointerMap());
   LPointerMap* pointers = instr->pointer_map();
   RecordPosition(pointers->position());
   SafepointGenerator safepoint_generator(
@@ -3336,7 +3335,6 @@ void LCodeGen::DoUnaryMathOperation(LUnaryMathOperation* instr) {
 void LCodeGen::DoInvokeFunction(LInvokeFunction* instr) {
   ASSERT(ToRegister(instr->function()).is(a1));
   ASSERT(instr->HasPointerMap());
-  ASSERT(instr->HasDeoptimizationEnvironment());
 
   if (instr->known_function().is_null()) {
     LPointerMap* pointers = instr->pointer_map();
@@ -4955,7 +4953,7 @@ void LCodeGen::DoDeleteProperty(LDeleteProperty* instr) {
   Register strict = scratch0();
   __ li(strict, Operand(Smi::FromInt(strict_mode_flag())));
   __ Push(object, key, strict);
-  ASSERT(instr->HasPointerMap() && instr->HasDeoptimizationEnvironment());
+  ASSERT(instr->HasPointerMap());
   LPointerMap* pointers = instr->pointer_map();
   RecordPosition(pointers->position());
   SafepointGenerator safepoint_generator(
@@ -4968,7 +4966,7 @@ void LCodeGen::DoIn(LIn* instr) {
   Register obj = ToRegister(instr->object());
   Register key = ToRegister(instr->key());
   __ Push(key, obj);
-  ASSERT(instr->HasPointerMap() && instr->HasDeoptimizationEnvironment());
+  ASSERT(instr->HasPointerMap());
   LPointerMap* pointers = instr->pointer_map();
   RecordPosition(pointers->position());
   SafepointGenerator safepoint_generator(this, pointers, Safepoint::kLazyDeopt);