Further improve deopt reason output.

src/x87/lithium-codegen-x87.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/v8.h"
 
 #if V8_TARGET_ARCH_X87
 
 #include "src/base/bits.h"
 #include "src/code-factory.h"
@@ skipping 1137 matching lines @@
     __ bind(&done);
   }
 
   Deoptimizer::Reason reason(instr->hydrogen_value()->position().raw(),
                              instr->Mnemonic(), detail);
   DCHECK(info()->IsStub() || frame_is_built_);
   if (cc == no_condition && frame_is_built_) {
     DeoptComment(reason);
     __ call(entry, RelocInfo::RUNTIME_ENTRY);
   } else {
+    Deoptimizer::JumpTableEntry table_entry(entry, reason, bailout_type,
+                                            !frame_is_built_);
     // We often have several deopts to the same entry, reuse the last
     // jump entry if this is the case.
     if (jump_table_.is_empty() ||
-        jump_table_.last().address != entry ||
-        jump_table_.last().needs_frame != !frame_is_built_ ||
-        jump_table_.last().bailout_type != bailout_type) {
-      Deoptimizer::JumpTableEntry table_entry(entry, reason, bailout_type,
-                                              !frame_is_built_);
+        !table_entry.IsEquivalentTo(jump_table_.last())) {
       jump_table_.Add(table_entry, zone());
     }
     if (cc == no_condition) {
       __ jmp(&jump_table_.last().label);
     } else {
       __ j(cc, &jump_table_.last().label);
     }
   }
 }
 
@@ skipping 5067 matching lines @@
   CallRuntime(Runtime::kPushBlockContext, 2, instr);
   RecordSafepoint(Safepoint::kNoLazyDeopt);
 }
 
 
 #undef __
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_X87