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A ccsv5 bug?

Hi all

  spru732j.pdf  3.7.2 Constraints on the Same Functional Unit Writing in the Same Instruction Cycle

   my program:

   MPY2 .M2 B16,B17,B17:B16  // 1

   SSHVR .M2 B24,B31,B24      //   2

   SSHVR .M2 B18,B31,B18      // 3

   NOP                                           // 4

   NOP                                           // 5  the 1 and 3 instruction write result both, but ccsv5 simulator can get B16,B16,B18 correctly.