Introduce a class to carry around a deoptimization reason.

src/mips/lithium-codegen-mips.cc

 // Copyright 2012 the V8 project authors. All rights reserved.7
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 801 matching lines @@
                           translation.index(),
                           (mode == Safepoint::kLazyDeopt) ? pc_offset : -1);
     deoptimizations_.Add(environment, zone());
   }
 }
 
 
 void LCodeGen::DeoptimizeIf(Condition condition, LInstruction* instr,
                             Deoptimizer::BailoutType bailout_type,
                             Register src1, const Operand& src2,
-                            const char* reason) {
+                            const char* detail) {
   LEnvironment* environment = instr->environment();
   RegisterEnvironmentForDeoptimization(environment, Safepoint::kNoLazyDeopt);
   DCHECK(environment->HasBeenRegistered());
   int id = environment->deoptimization_index();
   DCHECK(info()->IsOptimizing() || info()->IsStub());
   Address entry =
       Deoptimizer::GetDeoptimizationEntry(isolate(), id, bailout_type);
   if (entry == NULL) {
     Abort(kBailoutWasNotPrepared);
     return;
@@ skipping 20 matching lines @@
 
   if (info()->ShouldTrapOnDeopt()) {
     Label skip;
     if (condition != al) {
       __ Branch(&skip, NegateCondition(condition), src1, src2);
     }
     __ stop("trap_on_deopt");
     __ bind(&skip);
   }
 
+  Deoptimizer::Reason reason(instr->Mnemonic(), detail);
   DCHECK(info()->IsStub() || frame_is_built_);
   // Go through jump table if we need to handle condition, build frame, or
   // restore caller doubles.
   if (condition == al && frame_is_built_ &&
       !info()->saves_caller_doubles()) {
-    DeoptComment(instr->Mnemonic(), reason);
+    DeoptComment(reason);
     __ Call(entry, RelocInfo::RUNTIME_ENTRY, condition, src1, src2);
   } else {
     // We often have several deopts to the same entry, reuse the last
     // jump entry if this is the case.
     if (deopt_jump_table_.is_empty() ||
         (deopt_jump_table_.last().address != entry) ||
         (deopt_jump_table_.last().bailout_type != bailout_type) ||
         (deopt_jump_table_.last().needs_frame != !frame_is_built_)) {
-      Deoptimizer::JumpTableEntry table_entry(entry, instr->Mnemonic(), reason,
-                                              bailout_type, !frame_is_built_);
+      Deoptimizer::JumpTableEntry table_entry(entry, reason, bailout_type,
+                                              !frame_is_built_);
       deopt_jump_table_.Add(table_entry, zone());
     }
     __ Branch(&deopt_jump_table_.last().label, condition, src1, src2);
   }
 }
 
 
 void LCodeGen::DeoptimizeIf(Condition condition, LInstruction* instr,
                             Register src1, const Operand& src2,
-                            const char* reason) {
+                            const char* detail) {
   Deoptimizer::BailoutType bailout_type = info()->IsStub()
       ? Deoptimizer::LAZY
       : Deoptimizer::EAGER;
-  DeoptimizeIf(condition, instr, bailout_type, src1, src2, reason);
+  DeoptimizeIf(condition, instr, bailout_type, src1, src2, detail);
 }
 
 
 void LCodeGen::PopulateDeoptimizationData(Handle<Code> code) {
   int length = deoptimizations_.length();
   if (length == 0) return;
   Handle<DeoptimizationInputData> data =
       DeoptimizationInputData::New(isolate(), length, TENURED);
 
   Handle<ByteArray> translations =
@@ skipping 5011 matching lines @@
   __ li(at, scope_info);
   __ Push(at, ToRegister(instr->function()));
   CallRuntime(Runtime::kPushBlockContext, 2, instr);
   RecordSafepoint(Safepoint::kNoLazyDeopt);
 }
 
 
 #undef __
 
 } }  // namespace v8::internal