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  1. Harmony
  2. HARMONY-6024

[drlvm][jit] Incorrect generated instruction in peephole opt for MOV

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    Details

    • Type: Bug
    • Status: Open
    • Priority: Major
    • Resolution: Unresolved
    • Affects Version/s: None
    • Fix Version/s: None
    • Component/s: DRLVM
    • Labels:
      None
    • Environment:
      IA32 Windows

      Description

      In the case 1 of peephole opt for MOV in Ia32PeepHole.cpp, the optimization is like following:

      MOV opnd, opnd2
      MOV opnd3, opnd
      =>
      MOV opnd3, opnd2

      The bug is the new MOV instruction is always generated by "newInst" even the original MOV instructions are both pseudo copy, which will cause an assertion error later.

        Attachments

        1. H6024-V1.patch
          3 kB
          Xiaoming Gu

          Issue Links

          is part of

          Bug - A problem which impairs or prevents the functions of the product. HARMONY-6027 [drlvm][jit] An incorrect register assignment in graph coloring register allocation

          • Major - Major loss of function.
          • Open

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              • Assignee:
                Unassigned
                Reporter:
                xiaoming Xiaoming Gu
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                Dates

                • Created:
                  Updated: