X87: Externalize deoptimization reasons.

src/x87/assembler-x87.cc

Index: src/x87/assembler-x87.cc
diff --git a/src/x87/assembler-x87.cc b/src/x87/assembler-x87.cc
index 4177156ee66c1dede3776720fea62aa6548bae20..0784592cc13be6439bb8cff83c14b4eb7569d4c9 100644
--- a/src/x87/assembler-x87.cc
+++ b/src/x87/assembler-x87.cc
@@ -1919,6 +1919,15 @@ void Assembler::RecordComment(const char* msg, bool force) {
 }
 
 
+void Assembler::RecordDeoptReason(const int reason, const int raw_position) {
+  if (FLAG_trace_deopt) {
+    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");