[coverage] Block coverage with support for IfStatements

src/interpreter/bytecode-generator.h

Index: src/interpreter/bytecode-generator.h
diff --git a/src/interpreter/bytecode-generator.h b/src/interpreter/bytecode-generator.h
index 579365952b9fae9bd4fc51e4c902c0b8bd0c4133..1501a854c50fcc2e04776912a22e7b77b6f892fc 100644
--- a/src/interpreter/bytecode-generator.h
+++ b/src/interpreter/bytecode-generator.h
@@ -51,6 +51,7 @@ class BytecodeGenerator final : public AstVisitor<BytecodeGenerator> {
   class ExpressionResultScope;
   class EffectResultScope;
   class GlobalDeclarationsBuilder;
+  class BlockCoverageBuilder;
   class RegisterAllocationScope;
   class TestResultScope;
   class ValueResultScope;
@@ -178,6 +179,9 @@ class BytecodeGenerator final : public AstVisitor<BytecodeGenerator> {
 
   void BuildLoadPropertyKey(LiteralProperty* property, Register out_reg);
 
+  int AllocateBlockCoverageSlotIfEnabled(SourceRange range);
+  void BuildIncrementBlockCoverageCounterIfEnabled(int coverage_array_slot);
+
   // Visitors for obtaining expression result in the accumulator, in a
   // register, or just getting the effect. Some visitors return a TypeHint which
   // specifies the type of the result of the visited expression.
@@ -244,6 +248,7 @@ class BytecodeGenerator final : public AstVisitor<BytecodeGenerator> {
   Scope* current_scope_;
 
   GlobalDeclarationsBuilder* globals_builder_;
+  BlockCoverageBuilder* block_coverage_builder_;
   ZoneVector<GlobalDeclarationsBuilder*> global_declarations_;
   ZoneVector<std::pair<FunctionLiteral*, size_t>> function_literals_;
   ZoneVector<std::pair<NativeFunctionLiteral*, size_t>>