Re: [PATCH][GCC] IPA: Optionally allow double costing, restoring GCC 10 behavior

On Wed, Feb 10, 2021 at 4:16 PM Tamar Christina via Gcc-patches wrote: > > Hi Honza and Martin, > > As explained in PR98782 the problem is that the behavior of IRA is quite > tightly > bound to the frequencies that IPA puts out. With the change introduced in >

[PATCH][GCC] IPA: Optionally allow double costing, restoring GCC 10 behavior

Hi Honza and Martin, As explained in PR98782 the problem is that the behavior of IRA is quite tightly bound to the frequencies that IPA puts out. With the change introduced in g:1118a3ff9d3ad6a64bba25dc01e7703325e23d92 some, but not all edge predictions changed. This introduces a local problem