Move stack check after while statement.

src/full-codegen.cc

 // Copyright 2009 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 807 matching lines @@
   __ CallStub(&stack_stub);
   __ jmp(&stack_check_success);
 
   __ bind(&done);
   decrement_loop_depth();
 }
 
 
 void FullCodeGenerator::VisitWhileStatement(WhileStatement* stmt) {
   Comment cmnt(masm_, "[ WhileStatement");
-  Label body, stack_limit_hit, stack_check_success;
+  Label body, stack_limit_hit, stack_check_success, done;
 
   Iteration loop_statement(this, stmt);
   increment_loop_depth();
 
   // Emit the test at the bottom of the loop.
   __ jmp(loop_statement.continue_target());
 
-  __ bind(&stack_limit_hit);
-  StackCheckStub stack_stub;
-  __ CallStub(&stack_stub);
-  __ jmp(&stack_check_success);
-
   __ bind(&body);
   Visit(stmt->body());
   __ bind(loop_statement.continue_target());
 
   // Emit the statement position here as this is where the while
   // statement code starts.
   SetStatementPosition(stmt);
 
   // Check stack before looping.
   __ StackLimitCheck(&stack_limit_hit);
   __ bind(&stack_check_success);
 
   VisitForControl(stmt->cond(),
                   &body,
                   loop_statement.break_target(),
                   loop_statement.break_target());
 
   __ bind(loop_statement.break_target());
+  __ jmp(&done);
+
+  __ bind(&stack_limit_hit);
+  StackCheckStub stack_stub;
+  __ CallStub(&stack_stub);
+  __ jmp(&stack_check_success);
+
+  __ bind(&done);
   decrement_loop_depth();
 }
 
 
 void FullCodeGenerator::VisitForStatement(ForStatement* stmt) {
   Comment cmnt(masm_, "[ ForStatement");
   Label test, body, stack_limit_hit, stack_check_success;
 
   Iteration loop_statement(this, stmt);
   if (stmt->init() != NULL) {
@@ skipping 261 matching lines @@
   ASSERT(args->length() == 1);
   VisitForValue(args->at(0), kStack);
   __ CallRuntime(Runtime::kRegExpCloneResult, 1);
   Apply(context_, result_register());
 }
 
 #undef __
 
 
 } }  // namespace v8::internal