Add asserts to ensure that we:

src/ia32/deoptimizer-ia32.cc

 // Copyright 2011 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 657 matching lines @@
   // Allocate a new deoptimizer object.
   __ PrepareCallCFunction(6, eax);
   __ mov(eax, Operand(ebp, JavaScriptFrameConstants::kFunctionOffset));
   __ mov(Operand(esp, 0 * kPointerSize), eax);  // Function.
   __ mov(Operand(esp, 1 * kPointerSize), Immediate(type()));  // Bailout type.
   __ mov(Operand(esp, 2 * kPointerSize), ebx);  // Bailout id.
   __ mov(Operand(esp, 3 * kPointerSize), ecx);  // Code address or 0.
   __ mov(Operand(esp, 4 * kPointerSize), edx);  // Fp-to-sp delta.
   __ mov(Operand(esp, 5 * kPointerSize),
          Immediate(ExternalReference::isolate_address()));
-  __ CallCFunction(ExternalReference::new_deoptimizer_function(isolate), 6);
+  {
+    AllowExternalCallThatCantCauseGC scope(masm());
+    __ CallCFunction(ExternalReference::new_deoptimizer_function(isolate), 6);
+  }
 
   // Preserve deoptimizer object in register eax and get the input
   // frame descriptor pointer.
   __ mov(ebx, Operand(eax, Deoptimizer::input_offset()));
 
   // Fill in the input registers.
   for (int i = kNumberOfRegisters - 1; i >= 0; i--) {
     int offset = (i * kPointerSize) + FrameDescription::registers_offset();
     __ pop(Operand(ebx, offset));
   }
@@ skipping 27 matching lines @@
   __ bind(&pop_loop);
   __ pop(Operand(edx, 0));
   __ add(Operand(edx), Immediate(sizeof(uint32_t)));
   __ cmp(ecx, Operand(esp));
   __ j(not_equal, &pop_loop);
 
   // Compute the output frame in the deoptimizer.
   __ push(eax);
   __ PrepareCallCFunction(1, ebx);
   __ mov(Operand(esp, 0 * kPointerSize), eax);
-  __ CallCFunction(
-      ExternalReference::compute_output_frames_function(isolate), 1);
+  {
+    AllowExternalCallThatCantCauseGC scope(masm());
+    __ CallCFunction(
+        ExternalReference::compute_output_frames_function(isolate), 1);
+  }
   __ pop(eax);
 
   // Replace the current frame with the output frames.
   Label outer_push_loop, inner_push_loop;
   // Outer loop state: eax = current FrameDescription**, edx = one past the
   // last FrameDescription**.
   __ mov(edx, Operand(eax, Deoptimizer::output_count_offset()));
   __ mov(eax, Operand(eax, Deoptimizer::output_offset()));
   __ lea(edx, Operand(eax, edx, times_4, 0));
   __ bind(&outer_push_loop);
@@ skipping 52 matching lines @@
   }
   __ bind(&done);
 }
 
 #undef __
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_IA32