On Mon, Feb 15, 2021 at 01:03:36PM -0800, Steve Kargl wrote: > On Mon, Feb 15, 2021 at 12:49:13PM -0800, Steve Kargl wrote: > > On Sun, Feb 14, 2021 at 01:59:58PM -0800, Steve Kargl wrote: > > > Just a headsup for anyone doing numerical work with > > > FreeBSD-current. clang with optimization of -O1 or > > > higher produces wrong results. Testing 1 million > > > complex values of ccoshf and limiting |z| < 20, > > > shows > > > > > > > This is either an in-ling bug or discarding a cast issue. > > With everything in the same file so clang has dp_ccosh > > available to it when compiling main. > > > > Code builds and works as expected with gcc 10.2and > gcc 11.0.0. >
Can't find a list of options that is equivalent to -O1, so cannot test various optimizations. Notice that -march=i686 gives the wrong results and -march=core2 gives the correct result. Trying -march=i686 -msse -msse2 gives the correct result. It seems that clang does not understand how the x87 (on i585-freebsd). -- Steve _______________________________________________ freebsd-current@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/freebsd-current To unsubscribe, send any mail to "freebsd-current-unsubscr...@freebsd.org"
