* Add code to check coverage of generated code on IA32 port....

src/macro-assembler-ia32.h

Index: src/macro-assembler-ia32.h
===================================================================
--- src/macro-assembler-ia32.h	(revision 1748)
+++ src/macro-assembler-ia32.h	(working copy)
@@ -343,6 +343,26 @@
   return Operand(object, index, scale, offset - kHeapObjectTag);
 }
 
+
+#ifdef GENERATED_CODE_COVERAGE
+#define CODE_COVERAGE_STRINGIFY(x) #x
+#define CODE_COVERAGE_TOSTRING(x) CODE_COVERAGE_STRINGIFY(x)
+#define __FILE_LINE__ __FILE__ ":" CODE_COVERAGE_TOSTRING(__LINE__)
+extern byte* ia32_coverage_function;
+#define DEFINE_MASM(masm)                                        \
+  masm->pushfd();                                                \
+  masm->pushad();                                                \
+  masm->push(Immediate(reinterpret_cast<int>(&__FILE_LINE__)));  \
+  masm->call(ia32_coverage_function, RelocInfo::RUNTIME_ENTRY);  \
+  masm->pop(eax);                                                \
+  masm->popad();                                                 \
+  masm->popfd();                                                 \
+  masm->
+#else
+#define DEFINE_MASM(masm) masm->
+#endif
+
+
 } }  // namespace v8::internal
 
 #endif  // V8_MACRO_ASSEMBLER_IA32_H_