Replaced a bailout ID assertion with quadratic time complexity by a linear one.

src/full-codegen.h

Index: src/full-codegen.h
diff --git a/src/full-codegen.h b/src/full-codegen.h
index c25076a0b13e603940dee80af80bf7a0df205ebf..c4f3fcc722b3252ce6970c87abb02b3a8a4423f7 100644
--- a/src/full-codegen.h
+++ b/src/full-codegen.h
@@ -35,6 +35,7 @@
 #include "code-stubs.h"
 #include "codegen.h"
 #include "compiler.h"
+#include "data-flow.h"
 
 namespace v8 {
 namespace internal {
@@ -816,6 +817,7 @@ class FullCodeGenerator: public AstVisitor {
   int module_index_;
   const ExpressionContext* context_;
   ZoneList<BailoutEntry> bailout_entries_;
+  GrowableBitVector prepared_bailout_ids_;
   // TODO(svenpanne) Rename this to something like back_edges_ and rename
   // related functions accordingly.
   ZoneList<BailoutEntry> stack_checks_;