https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108740
--- Comment #5 from Piotr <jankowski938 at gmail dot com> --- (In reply to Andrew Pinski from comment #4) > (In reply to Piotr from comment #3) > > (In reply to Richard Biener from comment #2) > > > Hmm, ICF + re-inlining makes it ignore some of the pointless volatile > > > dance? > > > > why the code is different abstracting form the sense of the assignment? > > It is the volatileness of the argument. which by the way for C++20 is > deprecated ... It does not answer my question. Identical functions - different generated code. Both have volatile arguments.
