[stubs] Fix issues found by the machine graph verifier in load/store IC stubs.

src/code-stub-assembler.h

 // Copyright 2016 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef V8_CODE_STUB_ASSEMBLER_H_
 #define V8_CODE_STUB_ASSEMBLER_H_
 
 #include <functional>
 
 #include "src/compiler/code-assembler.h"
@@ skipping 164 matching lines @@
 
   Node* SelectConstant(Node* condition, Node* true_value, Node* false_value,
                        MachineRepresentation rep);
 
   Node* SelectInt32Constant(Node* condition, int true_value, int false_value);
   Node* SelectIntPtrConstant(Node* condition, int true_value, int false_value);
   Node* SelectBooleanConstant(Node* condition);
   Node* SelectTaggedConstant(Node* condition, Node* true_value,
                              Node* false_value);
 
+  Node* TruncateWordToWord32(Node* value);
+
   // Check a value for smi-ness
   Node* TaggedIsSmi(Node* a);
   Node* TaggedIsNotSmi(Node* a);
   // Check that the value is a non-negative smi.
   Node* WordIsPositiveSmi(Node* a);
   // Check that a word has a word-aligned address.
   Node* WordIsWordAligned(Node* word);
   Node* WordIsPowerOfTwo(Node* value);
 
   void BranchIfSmiEqual(Node* a, Node* b, Label* if_true, Label* if_false) {
@@ skipping 934 matching lines @@
   }
 #else
 #define CSA_SLOW_ASSERT(csa, x) ((void)0)
 #endif
 
 DEFINE_OPERATORS_FOR_FLAGS(CodeStubAssembler::AllocationFlags);
 
 }  // namespace internal
 }  // namespace v8
 #endif  // V8_CODE_STUB_ASSEMBLER_H_