VM: Fix bugs with missing deoptimization environment and int32x4 constructor

runtime/vm/intermediate_language.h

 // Copyright (c) 2013, 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 4889 matching lines @@
 };
 
 
 class UnboxUint32Instr : public UnboxInteger32Instr {
  public:
   UnboxUint32Instr(Value* value, intptr_t deopt_id)
       : UnboxInteger32Instr(kUnboxedUint32, kTruncate, value, deopt_id) {
     ASSERT(is_truncating());
   }
 
-  virtual bool CanDeoptimize() const {
-    ASSERT(is_truncating());
-    return (value()->Type()->ToCid() != kSmiCid)
-        && (value()->Type()->ToCid() != kMintCid);
-  }
+  virtual bool CanDeoptimize() const;
 
   virtual void InferRange(RangeAnalysis* analysis, Range* range);
 
   DECLARE_INSTRUCTION_NO_BACKEND(UnboxUint32)
 
  private:
   DISALLOW_COPY_AND_ASSIGN(UnboxUint32Instr);
 };
 
 
@@ skipping 1296 matching lines @@
   virtual void PrintOperandsTo(BufferFormatter* f) const;
 
   virtual bool CanDeoptimize() const { return false; }
 
   virtual Representation representation() const {
     return kUnboxedInt32x4;
   }
 
   virtual Representation RequiredInputRepresentation(intptr_t idx) const {
     ASSERT((idx >= 0) && (idx < 4));
-    return kUnboxedUint32;
+    return kUnboxedInt32;
   }
 
   virtual intptr_t DeoptimizationTarget() const {
     // Direct access since this instruction cannot deoptimize, and the deopt-id
     // was inherited from another instruction that could deoptimize.
     return GetDeoptId();
   }
 
   DECLARE_INSTRUCTION(Int32x4Constructor)
   virtual CompileType ComputeType() const;
@@ skipping 1860 matching lines @@
   LocationSummary* Name::MakeLocationSummary(Zone* zone, bool opt) const {    \
     UNIMPLEMENTED();                                                          \
     return NULL;                                                              \
   }                                                                           \
   void Name::EmitNativeCode(FlowGraphCompiler* compiler) { UNIMPLEMENTED(); }
 
 
 }  // namespace dart
 
 #endif  // VM_INTERMEDIATE_LANGUAGE_H_