Make deoptimization stress count global.

src/ia32/lithium-codegen-ia32.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // 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 914 matching lines @@
   int id = environment->deoptimization_index();
   ASSERT(info()->IsOptimizing() || info()->IsStub());
   Address entry =
       Deoptimizer::GetDeoptimizationEntry(isolate(), id, bailout_type);
   if (entry == NULL) {
     Abort("bailout was not prepared");
     return;
   }
 
   if (FLAG_deopt_every_n_times != 0 && !info()->IsStub()) {
-    Handle<SharedFunctionInfo> shared(info()->shared_info());
+    ExternalReference count = ExternalReference::stress_deopt_count(isolate());
     Label no_deopt;
     __ pushfd();
     __ push(eax);
-    __ push(ebx);
-    __ mov(ebx, shared);
-    __ mov(eax,
-           FieldOperand(ebx, SharedFunctionInfo::kStressDeoptCounterOffset));
-    __ sub(Operand(eax), Immediate(Smi::FromInt(1)));
+    __ mov(eax, Operand::StaticVariable(count));
+    __ sub(eax, Immediate(1));
     __ j(not_zero, &no_deopt, Label::kNear);
     if (FLAG_trap_on_deopt) __ int3();
-    __ mov(eax, Immediate(Smi::FromInt(FLAG_deopt_every_n_times)));
-    __ mov(FieldOperand(ebx, SharedFunctionInfo::kStressDeoptCounterOffset),
-           eax);
-    __ pop(ebx);
+    __ mov(eax, Immediate(FLAG_deopt_every_n_times));
+    __ mov(Operand::StaticVariable(count), eax);
     __ pop(eax);
     __ popfd();
     ASSERT(frame_is_built_);
     __ call(entry, RelocInfo::RUNTIME_ENTRY);
-
     __ bind(&no_deopt);
-    __ mov(FieldOperand(ebx, SharedFunctionInfo::kStressDeoptCounterOffset),
-           eax);
-    __ pop(ebx);
+    __ mov(Operand::StaticVariable(count), eax);
     __ pop(eax);
     __ popfd();
   }
 
   // Before Instructions which can deopt, we normally flush the x87 stack. But
   // we can have inputs or outputs of the current instruction on the stack,
   // thus we need to flush them here from the physical stack to leave it in a
   // consistent state.
   if (x87_stack_depth_ > 0) {
     Label done;
@@ skipping 5528 matching lines @@
                               FixedArray::kHeaderSize - kPointerSize));
   __ bind(&done);
 }
 
 
 #undef __
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_IA32