The early you catch compatibility issues the better. IMHO, rolling out source and recompiling is much safer.
-- Shmuel (Seymour J.) Metz http://mason.gmu.edu/~smetz3 ________________________________________ From: IBM Mainframe Discussion List <IBM-MAIN@LISTSERV.UA.EDU> on behalf of Steve Smith <sasd...@gmail.com> Sent: Wednesday, January 15, 2020 12:42 PM To: IBM-MAIN@LISTSERV.UA.EDU Subject: Re: Migrating to new compiler release Seems to me your problem is recompiling after testing. If you want to avoid problems that re-compiling could introduce, then don't. sas On Wed, Jan 15, 2020 at 11:59 AM Frank Swarbrick < frank.swarbr...@outlook.com> wrote: > I was just stating what a theoretical new version of a theoretical > compiler might provide. In the specific case of E.C. 6.3 you are certainly > correct. Of course there is no requirement to change ARCH level upon > implementation of a new version, even if you're at that necessary hardware > level. > > ________________________________ > From: IBM Mainframe Discussion List <IBM-MAIN@LISTSERV.UA.EDU> on behalf > of Clark Morris <cfmt...@uniserve.com> > Sent: Tuesday, January 14, 2020 4:20 PM > To: IBM-MAIN@LISTSERV.UA.EDU <IBM-MAIN@LISTSERV.UA.EDU> > Subject: Re: Migrating to new compiler release > > [Default] On 14 Jan 2020 13:58:34 -0800, in bit.listserv.ibm-main > frank.swarbr...@outlook.com (Frank Swarbrick) wrote: > > >I disagree with that. A new version may simply be new features, none > affecting any features the old version supported. > > The 6.3 compiler supports a new ARCH level for the z15 and uses SIMD > instructions rather that the selected conversion to floating point > decimal for some calculations. Both code sequences are an enhancement > over using standard packed decimal instructions. > > Clark Morris > ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
