RFC: Switch to ast ids (instead of positions) for type feedback.

src/objects.cc

Index: src/objects.cc
diff --git a/src/objects.cc b/src/objects.cc
index 399ab092a7edb47c7f7e531ecb73a56807a01231..e1e24e08bb6332c63f10adb3d3c6b6f7d562928e 100644
--- a/src/objects.cc
+++ b/src/objects.cc
@@ -5700,11 +5700,11 @@ void SharedFunctionInfo::EnableDeoptimizationSupport(Code* recompiled) {
 }
 
 
-bool SharedFunctionInfo::VerifyBailoutId(int id) {
+bool SharedFunctionInfo::VerifyBailoutId(AstId id) {
   // TODO(srdjan): debugging ARM crashes in hydrogen. OK to disable while
   // we are always bailing out on ARM.
 
-  ASSERT(id != AstNode::kNoNumber);
+  ASSERT(id != kNoAstId);
   Code* unoptimized = code();
   DeoptimizationOutputData* data =
       DeoptimizationOutputData::cast(unoptimized->deoptimization_data());
@@ -6242,7 +6242,7 @@ void Code::Disassemble(const char* name) {
       PrintF("%p  %4d  ", (instruction_start() + pc_offset), pc_offset);
       table.PrintEntry(i);
       PrintF(" (sp -> fp)");
-      int deoptimization_index = table.GetDeoptimizationIndex(i);
+      AstId deoptimization_index = table.GetDeoptimizationIndex(i);
       if (deoptimization_index != Safepoint::kNoDeoptimizationIndex) {
         PrintF("  %6d", deoptimization_index);
       } else {