Move catch prediction into frontend.

src/full-codegen/full-codegen.h

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef V8_FULL_CODEGEN_FULL_CODEGEN_H_
 #define V8_FULL_CODEGEN_FULL_CODEGEN_H_
 
 #include "src/allocation.h"
 #include "src/assert-scope.h"
 #include "src/ast/ast.h"
@@ skipping 19 matching lines @@
 class FullCodeGenerator: public AstVisitor {
  public:
   FullCodeGenerator(MacroAssembler* masm, CompilationInfo* info)
       : masm_(masm),
         info_(info),
         isolate_(info->isolate()),
         zone_(info->zone()),
         scope_(info->scope()),
         nesting_stack_(NULL),
         loop_depth_(0),
         try_catch_depth_(0),

[Michael Starzinger, 2016/07/12 14:11:12]

nit: This variable should no longer be needed, let's drop it.

         operand_stack_depth_(0),
         globals_(NULL),
         context_(NULL),
         bailout_entries_(info->HasDeoptimizationSupport()
                              ? info->literal()->ast_node_count()
                              : 0,
                          info->zone()),
         back_edges_(2, info->zone()),
         handler_table_(info->zone()),
         source_position_table_builder_(info->isolate(), info->zone(),
@@ skipping 629 matching lines @@
 
   void SetConstructCallPosition(Expression* expr) {
     // Currently call and construct calls are treated the same wrt debugging.
     SetCallPosition(expr);
   }
 
   void RecordStatementPosition(int pos);
   void RecordPosition(int pos);
 
   // Non-local control flow support.
-  void EnterTryBlock(int handler_index, Label* handler);
+  void EnterTryBlock(int handler_index, Label* handler, bool catch_predicted);
   void ExitTryBlock(int handler_index);
   void EnterFinallyBlock();
   void ExitFinallyBlock();
   void ClearPendingMessage();
 
   void EmitContinue(Statement* target);
   void EmitBreak(Statement* target);
 
   // Loop nesting counter.
   int loop_depth() { return loop_depth_; }
@@ skipping 66 matching lines @@
     BailoutId id;
     unsigned pc;
     uint32_t loop_depth;
   };
 
   struct HandlerTableEntry {
     unsigned range_start;
     unsigned range_end;
     unsigned handler_offset;
     int stack_depth;
-    int try_catch_depth;
+    bool catch_predicted;
   };
 
   class ExpressionContext BASE_EMBEDDED {
    public:
     explicit ExpressionContext(FullCodeGenerator* codegen)
         : masm_(codegen->masm()), old_(codegen->context()), codegen_(codegen) {
       codegen->set_new_context(this);
     }
 
     virtual ~ExpressionContext() {
@@ skipping 174 matching lines @@
   };
 
   MacroAssembler* masm_;
   CompilationInfo* info_;
   Isolate* isolate_;
   Zone* zone_;
   Scope* scope_;
   Label return_label_;
   NestedStatement* nesting_stack_;
   int loop_depth_;
   int try_catch_depth_;

[Michael Starzinger, 2016/07/12 14:11:12]

nit: This variable should no longer be needed, let's drop it.

   int operand_stack_depth_;
   ZoneList<Handle<Object> >* globals_;
   const ExpressionContext* context_;
   ZoneList<BailoutEntry> bailout_entries_;
   ZoneList<BackEdgeEntry> back_edges_;
   ZoneVector<HandlerTableEntry> handler_table_;
   SourcePositionTableBuilder source_position_table_builder_;
   int ic_total_count_;
   Handle<Cell> profiling_counter_;
 
@@ skipping 73 matching lines @@
   Address start_;
   Address instruction_start_;
   uint32_t length_;
 };
 
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_FULL_CODEGEN_FULL_CODEGEN_H_