Externalize deoptimization reasons.

src/ia32/assembler-ia32.cc

Index: src/ia32/assembler-ia32.cc
diff --git a/src/ia32/assembler-ia32.cc b/src/ia32/assembler-ia32.cc
index 19e69b319121dc786f6695706641a320e860874e..436715fb87dd4727ced2a0ac6b8e1b510eae6715 100644
--- a/src/ia32/assembler-ia32.cc
+++ b/src/ia32/assembler-ia32.cc
@@ -2628,6 +2628,16 @@ void Assembler::RecordComment(const char* msg, bool force) {
 }
 
 
+void Assembler::RecordDeoptReason(const int reason, const int raw_position,
+                                  bool force) {
+  if (FLAG_trace_deopt || force) {
+    EnsureSpace ensure_space(this);
+    RecordRelocInfo(RelocInfo::POSITION, raw_position);
+    RecordRelocInfo(RelocInfo::DEOPT_REASON, reason);
+  }
+}
+
+
 void Assembler::GrowBuffer() {
   DCHECK(buffer_overflow());
   if (!own_buffer_) FATAL("external code buffer is too small");