On Mon, 5 Oct 2020 at 17:12, Stefan Kanthak <stefan.kant...@nexgo.de> wrote: > > The implementation of the functions __absv?i2(), __addv?i3() etc. for > trapping integer overflow provided in libgcc2.c is rather bad. > Same for __cmp?i2() and __ucmp?i2() > > GCC creates awful to horrible code for them (at least for AMD64 and > i386 processors): see <https://skanthak.homepage.t-online.de/gcc.html> > for some examples. > > The attached diff/patch provides better implementations.
Patches should go to the gcc-patches list, see https://gcc.gnu.org/contribute.html#patches
