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Status Delivered
Workspace C/C++ and Fortran Compilers
Categories C/C++
Created by Guest
Created on Oct 9, 2017

RELATED IDEAS

Inefficient store/load of immediate before inline __asm

Inefficient store/load of immediate before inline __asm

Optimization concern after function inlining of function with inline ASM.

The 'abend(1000)' call in mainz() looks good:

LGHI 1,1000 000003
ABEND (1) +000005

But the 'abend(500)' call that gets inlined in to mainy() does an unnecessary move(store)/load:

MVGHI 160(13),500 +000003
LLGH 1,166(0,13) a_4__3_3__2 +000005
ABEND (1) +000005

Idea priority Medium
  • Guest
    Reply
    |     Sep 9, 2020

    This has been delivered in C/C++ for z/OS, V2R4.

  • Guest
    Reply
    |     Jan 5, 2018

    The RFE has been accepted. The RFE will be updated once put into plan.

  • Guest
    Reply
    |     Nov 30, 2017

    This RFE is still being investigated.

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