Faster 64-bit left-shift for ia32.

runtime/vm/intermediate_language.h

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #ifndef VM_INTERMEDIATE_LANGUAGE_H_
 #define VM_INTERMEDIATE_LANGUAGE_H_
 
 #include "vm/allocation.h"
 #include "vm/ast.h"
 #include "vm/growable_array.h"
@@ skipping 3577 matching lines @@
 
 class ShiftMintOpInstr : public TemplateDefinition<2> {
  public:
   ShiftMintOpInstr(Token::Kind op_kind,
                    Value* left,
                    Value* right,
                    InstanceCallInstr* instance_call)
       : op_kind_(op_kind) {
     ASSERT(left != NULL);
     ASSERT(right != NULL);
-    ASSERT(op_kind == Token::kSHR);
+    ASSERT(op_kind == Token::kSHR || op_kind == Token::kSHL);
     inputs_[0] = left;
     inputs_[1] = right;
     deopt_id_ = instance_call->deopt_id();
   }
 
   Value* left() const { return inputs_[0]; }
   Value* right() const { return inputs_[1]; }
 
   Token::Kind op_kind() const { return op_kind_; }
 
@@ skipping 575 matching lines @@
   ForwardInstructionIterator* current_iterator_;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(FlowGraphVisitor);
 };
 
 
 }  // namespace dart
 
 #endif  // VM_INTERMEDIATE_LANGUAGE_H_