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LI75005: INCORRECT OPCODE AT -O5

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You can track all active APARs for this component.

APAR status

  • Closed as program error.

Error description

  • A program compiled at -O5 generates the following error:
    
    mpixlc_r -O5 -DUSE_MPI -qarch=450d -qtune=450   -o fftspiral1D \
        fftspiral1D.c autolib.c lib_dft_double.c
    fftspiral1D.c:
    autolib.c:
    lib_dft_double.c:
        1500-036: (I) The NOSTRICT option (default at OPT(3)) has
    the
    potential to alter the semantics of a program.  Please refer to
    documentation on the STRICT/NOSTRICT option for more
    information.
    /var/tmp/spelce1/ipaFntDTQ.s: Assembler messages:
    /var/tmp/spelce1/ipaFntDTQ.s:2528: Error: Unrecognized opcode:
    `fxcpnmsu'
    /var/tmp/spelce1/ipaFntDTQ.s:2534: Error: Unrecognized opcode:
    `fxcpnmsu'
    /var/tmp/spelce1/ipaFntDTQ.s:2642: Error: Unrecognized opcode:
    `fxcpnmsu'
    
    
    Opcode 'fxcpnmsu' is not a valid opcode. It shall be FXPNMSUB
    instead.
    

Local fix

  • Use -O3 instead.
    

Problem summary

  • USER AFFECTED:
    users with inline ASM in their source program
    PROBLEM DESCRIPTION:
    The problem happens if an user program satisfies the
    following two conditions:
    
    - the program contains inline ASM
    - the program uses the fxcpnmsub or the fxcsnmsub instruction
    (compiler generated)
    

Problem conclusion

  • The incorrect instruction error is due to a typo in
    the instruction mnemonics.  The problem has been fixed.
    

Temporary fix

Comments

APAR Information

  • APAR number

    LI75005

  • Reported component name

    XL C/C++ AE BG/

  • Reported component ID

    5799HJE00

  • Reported release

    900

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2009-11-04

  • Closed date

    2010-01-12

  • Last modified date

    2010-01-12

  • APAR is sysrouted FROM one or more of the following:

  • APAR is sysrouted TO one or more of the following:

    LI75700

Fix information

  • Fixed component name

    XL C/C++ AE BG/

  • Fixed component ID

    5799HJE00

Applicable component levels

  • R900 PSY

       UP



Document information

More support for: XL C/C++
Compiler

Software version: 9.0

Reference #: LI75005

Modified date: 12 January 2010


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