Handle another form of MOVW in ARM integrated assembler.

src/IceAssemblerARM32.h

 //===- subzero/src/IceAssemblerARM32.h - Assembler for ARM32 ----*- C++ -*-===//
 //
 // 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.
 //
 // Modified by the Subzero authors.
 //
 //===----------------------------------------------------------------------===//
 //
@@ skipping 296 matching lines @@
   void emitCompareOp(IValueT Opcode, const Operand *OpRn, const Operand *OpSrc1,
                      CondARM32::Cond Cond);
 
   void emitBranch(Label *L, CondARM32::Cond, bool Link);
 
   // Encodes the given Offset into the branch instruction Inst.
   IValueT encodeBranchOffset(IOffsetT Offset, IValueT Inst);
 
   // Returns the offset encoded in the branch instruction Inst.
   static IOffsetT decodeBranchOffset(IValueT Inst);
+
+  // Implements movw, generating pattern ccccxxxxxxxsiiiiddddiiiiiiiiiiii where
+  // cccc=Cond, xxxxxxx<<21=Opcode, dddd=Rd, s=SetFlags, and
+  // iiiiiiiiiiiiiiii=Imm16.
+  void emitMovw(IValueT Opcode, IValueT Rd, IValueT Imm16, bool SetFlags,
+                CondARM32::Cond Cond);
 };
 
 } // end of namespace ARM32
 } // end of namespace Ice
 
 #endif // SUBZERO_SRC_ICEASSEMBLERARM32_H