Omit stack check in non-looping loops.

R=jkummerow@chromium.org

Review URL: https://codereview.chromium.org/285333002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@21322 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

src/hydrogen.cc

@@ -4612,6 +4612,7 @@ void HOptimizedGraphBuilder::VisitDoWhileStatement(DoWhileStatement* stmt) {
     set_current_block(body_exit);
     loop_successor = graph()->CreateBasicBlock();
     if (stmt->cond()->ToBooleanIsFalse()) {
+      loop_entry->loop_information()->stack_check()->Eliminate();
       Goto(loop_successor);
       body_exit = NULL;
     } else {