Streamline throwing in the C entry stub.

src/ia32/macro-assembler-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 844 matching lines @@
   Label skip;
   test(esi, esi);
   j(zero, &skip, Label::kNear);
   mov(Operand(ebp, StandardFrameConstants::kContextOffset), esi);
   bind(&skip);
 
   JumpToHandlerEntry();
 }
 
 
-void MacroAssembler::ThrowUncatchable(UncatchableExceptionType type,
-                                      Register value) {
+void MacroAssembler::ThrowUncatchable(Register value) {
   // Adjust this code if not the case.
   STATIC_ASSERT(StackHandlerConstants::kSize == 5 * kPointerSize);
   STATIC_ASSERT(StackHandlerConstants::kNextOffset == 0);
   STATIC_ASSERT(StackHandlerConstants::kCodeOffset == 1 * kPointerSize);
   STATIC_ASSERT(StackHandlerConstants::kStateOffset == 2 * kPointerSize);
   STATIC_ASSERT(StackHandlerConstants::kContextOffset == 3 * kPointerSize);
   STATIC_ASSERT(StackHandlerConstants::kFPOffset == 4 * kPointerSize);
 
   // The exception is expected in eax.
-  if (type == OUT_OF_MEMORY) {
-    // Set external caught exception to false.
-    ExternalReference external_caught(Isolate::kExternalCaughtExceptionAddress,
-                                      isolate());
-    mov(Operand::StaticVariable(external_caught), Immediate(false));
-
-    // Set pending exception and eax to out of memory exception.
-    ExternalReference pending_exception(Isolate::kPendingExceptionAddress,
-                                        isolate());
-    mov(eax, reinterpret_cast<int32_t>(Failure::OutOfMemoryException()));
-    mov(Operand::StaticVariable(pending_exception), eax);
-  } else if (!value.is(eax)) {
+  if (!value.is(eax)) {
     mov(eax, value);
   }
-
   // Drop the stack pointer to the top of the top stack handler.
   ExternalReference handler_address(Isolate::kHandlerAddress, isolate());
   mov(esp, Operand::StaticVariable(handler_address));
 
   // Unwind the handlers until the top ENTRY handler is found.
   Label fetch_next, check_kind;
   jmp(&check_kind, Label::kNear);
   bind(&fetch_next);
   mov(esp, Operand(esp, StackHandlerConstants::kNextOffset));
 
@@ skipping 1884 matching lines @@
     cmp(length, Operand(bitmap_scratch, MemoryChunk::kSizeOffset));
     Check(less_equal, "Live Bytes Count overflow chunk size");
   }
 
   bind(&done);
 }
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_IA32