[deoptimizer] Fix Deoptimizer::GetDeoptInfo for last entry.

src/deoptimizer.cc

Index: src/deoptimizer.cc
diff --git a/src/deoptimizer.cc b/src/deoptimizer.cc
index baa7ed73c9be8152d9801e5f662d8f210b6f20c9..92cdb49a9f6aa1897ea50992808c126bc0f85ec0 100644
--- a/src/deoptimizer.cc
+++ b/src/deoptimizer.cc
@@ -2714,6 +2714,7 @@ DeoptimizedFrameInfo::DeoptimizedFrameInfo(TranslatedState* state,
 
 
 Deoptimizer::DeoptInfo Deoptimizer::GetDeoptInfo(Code* code, Address pc) {
+  CHECK(code->instruction_start() <= pc && pc <= code->instruction_end());
   SourcePosition last_position = SourcePosition::Unknown();
   DeoptimizeReason last_reason = DeoptimizeReason::kNoReason;
   int last_deopt_id = kNoDeoptimizationId;
@@ -2723,9 +2724,7 @@ Deoptimizer::DeoptInfo Deoptimizer::GetDeoptInfo(Code* code, Address pc) {
              RelocInfo::ModeMask(RelocInfo::DEOPT_INLINING_ID);
   for (RelocIterator it(code, mask); !it.done(); it.next()) {
     RelocInfo* info = it.rinfo();
-    if (info->pc() >= pc) {
-      return DeoptInfo(last_position, last_reason, last_deopt_id);
-    }
+    if (info->pc() >= pc) break;
     if (info->rmode() == RelocInfo::DEOPT_SCRIPT_OFFSET) {
       int script_offset = static_cast<int>(info->data());
       it.next();
@@ -2738,7 +2737,7 @@ Deoptimizer::DeoptInfo Deoptimizer::GetDeoptInfo(Code* code, Address pc) {
       last_reason = static_cast<DeoptimizeReason>(info->data());
     }
   }
-  return DeoptInfo(SourcePosition::Unknown(), DeoptimizeReason::kNoReason, -1);
+  return DeoptInfo(last_position, last_reason, last_deopt_id);
 }