[interpreter] add some expression positions.

src/interpreter/bytecode-generator.cc

Index: src/interpreter/bytecode-generator.cc
diff --git a/src/interpreter/bytecode-generator.cc b/src/interpreter/bytecode-generator.cc
index f153397931ca3bf03888b9c281a6c2e2af858377..799202deb8d94145c67b34194d3de2181e2907a9 100644
--- a/src/interpreter/bytecode-generator.cc
+++ b/src/interpreter/bytecode-generator.cc
@@ -1747,6 +1747,7 @@ void BytecodeGenerator::VisitArrayLiteral(ArrayLiteral* expr) {
 
 
 void BytecodeGenerator::VisitVariableProxy(VariableProxy* proxy) {
+  builder()->SetExpressionPosition(proxy);
   VisitVariableLoad(proxy->var(), proxy->VariableFeedbackSlot());
 }
 
@@ -2191,6 +2192,7 @@ void BytecodeGenerator::VisitAssignment(Assignment* expr) {
   }
 
   // Store the value.
+  builder()->SetExpressionPosition(expr);
   FeedbackVectorSlot slot = expr->AssignmentSlot();
   switch (assign_type) {
     case VARIABLE: {
@@ -2228,6 +2230,7 @@ void BytecodeGenerator::VisitYield(Yield* expr) { UNIMPLEMENTED(); }
 
 void BytecodeGenerator::VisitThrow(Throw* expr) {
   VisitForAccumulatorValue(expr->exception());
+  builder()->SetExpressionPosition(expr);
   builder()->Throw();
   // Throw statments are modeled as expression instead of statments. These are
   // converted from assignment statements in Rewriter::ReWrite pass. An
@@ -2240,6 +2243,7 @@ void BytecodeGenerator::VisitThrow(Throw* expr) {
 void BytecodeGenerator::VisitPropertyLoad(Register obj, Property* expr) {
   LhsKind property_kind = Property::GetAssignType(expr);
   FeedbackVectorSlot slot = expr->PropertyFeedbackSlot();
+  builder()->SetExpressionPosition(expr);
   switch (property_kind) {
     case VARIABLE:
       UNREACHABLE();
@@ -2748,6 +2752,7 @@ void BytecodeGenerator::VisitCountOperation(CountOperation* expr) {
   builder()->CountOperation(expr->binary_op());
 
   // Store the value.
+  builder()->SetExpressionPosition(expr);
   FeedbackVectorSlot feedback_slot = expr->CountSlot();
   switch (assign_type) {
     case VARIABLE: {
@@ -2807,6 +2812,7 @@ void BytecodeGenerator::VisitBinaryOperation(BinaryOperation* binop) {
 void BytecodeGenerator::VisitCompareOperation(CompareOperation* expr) {
   Register lhs = VisitForRegisterValue(expr->left());
   VisitForAccumulatorValue(expr->right());
+  builder()->SetExpressionPosition(expr);
   builder()->CompareOperation(expr->op(), lhs);
   execution_result()->SetResultInAccumulator();
 }