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Status Not under consideration
Workspace PL/I Compilers
Created by Guest
Created on May 10, 2016

RELATED IDEAS

Raise a severe error if a unknown instruction is generated

If the Compiler/Optimizer generates an invalid unknown instruction (UNKWN), it have to raise a Severe Error.

The assembly list shows unknown ?UNKWN? instructions:

000027 | ALRK r8,r7,r9
000027 | UNKWN r15,r3
000027 | UNKWN r8,r6
000027 | C r0,s.uwsGrundlId(r4,r15,3656)

see also PMR 60902,660,706 (for XL c/c++ Compiler).

Thank you, Patrick

Idea priority Low
  • Guest
    Reply
    |     Dec 1, 2016

    Too little benefit? Drive up the compile time too much for testing the generation of an unknown instruction? For me that's very astonishing! The compiler has to know which instruction has been generated. IMHO(!!!) that code is in one or more special sections called via otherwise clauses. And that addional code drives up the compile time too much?

    I think that point has to be discussed in our next meeting in May 2017 in Frankfurt!

  • Guest
    Reply
    |     Nov 29, 2016

    we think this would drive up the compile time too much for too little benefit

  • Guest
    Reply
    |     Oct 13, 2016

    we are investigating the compile-time cost of doing this

  • Guest
    Reply
    |     Sep 16, 2016

    a question about this RFE was sent as part of the response to the parallel RFE for C/C++

  • Guest
    Reply
    |     May 17, 2016

    we are discussing this with the backend team

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