https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100182
--- Comment #6 from CVS Commits <cvs-commit at gcc dot gnu.org> --- The releases/gcc-11 branch has been updated by Jakub Jelinek <ja...@gcc.gnu.org>: https://gcc.gnu.org/g:a21f3b38c3b9a5c28c79be37b040e7d06d827d76 commit r11-8281-ga21f3b38c3b9a5c28c79be37b040e7d06d827d76 Author: Jakub Jelinek <ja...@redhat.com> Date: Thu Apr 22 15:08:21 2021 +0200 libstdc++: Add workaround for ia32 floating atomics miscompilations [PR100184] gcc on ia32 miscompiles various atomics involving floating point, unfortunately I'm afraid it is too late to fix that for 11.1 and as I'm quite lost on it, it might take a while for 12 too (disabling all the 8 peephole2s would be easiest, but then we'd run into optimization regressions). While 1.cc just FAILs, with dejagnu 1.6.1 wait_notify.cc hangs the make check even after the timeout fires. The following patch therefore xfails the former and skips the latter. Tested on x86_64-linux where make check RUNTESTFLAGS='conformance.exp=atomic_float/*.cc' is still === libstdc++ Summary === # of expected passes 8 and on i686-linux, where it is now === libstdc++ Summary === # of expected passes 5 # of expected failures 1 # of unsupported tests 1 2021-04-22 Jakub Jelinek <ja...@redhat.com> PR target/100182 * testsuite/29_atomics/atomic_float/1.cc: Add dg-xfail-run-if for ia32. * testsuite/29_atomics/atomic_float/wait_notify.cc: Add dg-skip-if for ia32. (cherry picked from commit 0f4588141fcbe4e0f1fa12776b47200870f6c621)
