Record AST ids in relocation info at spots where we collect dynamic type feedback.

src/arm/assembler-arm.cc

 // Copyright (c) 1994-2006 Sun Microsystems Inc.
 // All Rights Reserved.
 //
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions
 // are met:
 //
 // - Redistributions of source code must retain the above copyright notice,
 // this list of conditions and the following disclaimer.
 //
@@ skipping 297 matching lines @@
   // Setup buffer pointers.
   ASSERT(buffer_ != NULL);
   pc_ = buffer_;
   reloc_info_writer.Reposition(buffer_ + buffer_size, pc_);
   num_prinfo_ = 0;
   next_buffer_check_ = 0;
   const_pool_blocked_nesting_ = 0;
   no_const_pool_before_ = 0;
   last_const_pool_end_ = 0;
   last_bound_pos_ = 0;
+  ast_id_for_reloc_info_ = kNoASTId;
 }
 
 
 Assembler::~Assembler() {
   ASSERT(const_pool_blocked_nesting_ == 0);
   if (own_buffer_) {
     if (isolate()->assembler_spare_buffer() == NULL &&
         buffer_size_ == kMinimalBufferSize) {
       isolate()->set_assembler_spare_buffer(buffer_);
     } else {
@@ skipping 2387 matching lines @@
 #ifdef DEBUG
       if (!Serializer::enabled()) {
         Serializer::TooLateToEnableNow();
       }
 #endif
       if (!Serializer::enabled() && !emit_debug_code()) {
         return;
       }
     }
     ASSERT(buffer_space() >= kMaxRelocSize);  // too late to grow buffer here
-    reloc_info_writer.Write(&rinfo);
+    if (rmode == RelocInfo::CODE_TARGET_WITH_ID) {
+      ASSERT(ast_id_for_reloc_info_ != kNoASTId);
+      RelocInfo reloc_info_with_ast_id(pc_, rmode, ast_id_for_reloc_info_);
+      ast_id_for_reloc_info_ = kNoASTId;
+      reloc_info_writer.Write(&reloc_info_with_ast_id);
+    } else {
+      reloc_info_writer.Write(&rinfo);
+    }
   }
 }
 
 
 void Assembler::CheckConstPool(bool force_emit, bool require_jump) {
   // Calculate the offset of the next check. It will be overwritten
   // when a const pool is generated or when const pools are being
   // blocked for a specific range.
   next_buffer_check_ = pc_offset() + kCheckConstInterval;
 
@@ skipping 95 matching lines @@
 
   // Since a constant pool was just emitted, move the check offset forward by
   // the standard interval.
   next_buffer_check_ = pc_offset() + kCheckConstInterval;
 }
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_ARM