[coverage] Block coverage with support for IfStatements

src/interpreter/bytecode-array-builder.h

 // Copyright 2015 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_INTERPRETER_BYTECODE_ARRAY_BUILDER_H_
 #define V8_INTERPRETER_BYTECODE_ARRAY_BUILDER_H_
 
 #include "src/ast/ast.h"
 #include "src/base/compiler-specific.h"
 #include "src/globals.h"
@@ skipping 375 matching lines @@
   // previous pending message in the accumulator.
   BytecodeArrayBuilder& SetPendingMessage();
 
   BytecodeArrayBuilder& Throw();
   BytecodeArrayBuilder& ReThrow();
   BytecodeArrayBuilder& Return();
 
   // Debugger.
   BytecodeArrayBuilder& Debugger();
 
+  // Increment the block counter at the given slot. Used for block code coverage
+  // (go/v8-designdoc-block-code-coverage).
+  BytecodeArrayBuilder& IncBlockCounter(int slot);
+
   // Complex flow control.
   BytecodeArrayBuilder& ForInPrepare(Register receiver,
                                      RegisterList cache_info_triple);
   BytecodeArrayBuilder& ForInContinue(Register index, Register cache_length);
   BytecodeArrayBuilder& ForInNext(Register receiver, Register index,
                                   RegisterList cache_type_array_pair,
                                   int feedback_slot);
   BytecodeArrayBuilder& ForInStep(Register index);
 
   // Generators.
@@ skipping 160 matching lines @@
 };
 
 V8_EXPORT_PRIVATE std::ostream& operator<<(
     std::ostream& os, const BytecodeArrayBuilder::ToBooleanMode& mode);
 
 }  // namespace interpreter
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_INTERPRETER_BYTECODE_ARRAY_BUILDER_H_