Externalize deoptimization reasons.

src/mips/assembler-mips.cc

Index: src/mips/assembler-mips.cc
diff --git a/src/mips/assembler-mips.cc b/src/mips/assembler-mips.cc
index 8e936e1947544aa1fa807885eefc3fa2b9a42ca9..182183f547bc9f7f7bf81baffbac69c228c4cd50 100644
--- a/src/mips/assembler-mips.cc
+++ b/src/mips/assembler-mips.cc
@@ -2347,6 +2347,15 @@ void Assembler::RecordComment(const char* msg) {
 }
 
 
+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);
+  }
+}
+
+
 int Assembler::RelocateInternalReference(byte* pc, intptr_t pc_delta) {
   Instr instr = instr_at(pc);
   DCHECK(IsJ(instr) || IsLui(instr));