[interpreter] Elide OSR polling from fake loops.

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 06eb53e92a499233fd83a0a73502eceeebf72b28..58f6e7288dc9c71e5c37863e4c643c0dbbfafaa0 100644
--- a/src/interpreter/bytecode-generator.cc
+++ b/src/interpreter/bytecode-generator.cc
@@ -1052,13 +1052,14 @@ void BytecodeGenerator::VisitIterationBody(IterationStatement* stmt,
 
 void BytecodeGenerator::VisitDoWhileStatement(DoWhileStatement* stmt) {
   LoopBuilder loop_builder(builder());
-  VisitIterationHeader(stmt, &loop_builder);
   if (stmt->cond()->ToBooleanIsFalse()) {
     VisitIterationBody(stmt, &loop_builder);
   } else if (stmt->cond()->ToBooleanIsTrue()) {
+    VisitIterationHeader(stmt, &loop_builder);
     VisitIterationBody(stmt, &loop_builder);
     loop_builder.JumpToHeader();
   } else {
+    VisitIterationHeader(stmt, &loop_builder);
     VisitIterationBody(stmt, &loop_builder);
     builder()->SetExpressionAsStatementPosition(stmt->cond());
     VisitForAccumulatorValue(stmt->cond());