[coverage] Block coverage with support for IfStatements

src/interpreter/interpreter-generator.cc

Index: src/interpreter/interpreter-generator.cc
diff --git a/src/interpreter/interpreter-generator.cc b/src/interpreter/interpreter-generator.cc
index 85a15b2389b9cff57452cd0957b7e6be093fdd1a..cea72208c4a0427a5a8c3ea2f3bd3c5b6bf039a8 100644
--- a/src/interpreter/interpreter-generator.cc
+++ b/src/interpreter/interpreter-generator.cc
@@ -3438,6 +3438,20 @@ IGNITION_HANDLER(Debugger, InterpreterAssembler) {
 DEBUG_BREAK_BYTECODE_LIST(DEBUG_BREAK);
 #undef DEBUG_BREAK
 
+// IncBlockCounter <slot>
+//
+// Increment the execution count for the given slot. Used for block code
+// coverage.
+IGNITION_HANDLER(IncBlockCounter, InterpreterAssembler) {
+  Node* closure = LoadRegister(Register::function_closure());
+  Node* coverage_array_slot = BytecodeOperandIdxSmi(0);
+  Node* context = GetContext();
+
+  CallRuntime(Runtime::kIncBlockCounter, context, closure, coverage_array_slot);
+
+  Dispatch();
+}
+
 class InterpreterForInPrepareAssembler : public InterpreterAssembler {
  public:
   InterpreterForInPrepareAssembler(CodeAssemblerState* state, Bytecode bytecode,