https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85368
--- Comment #11 from Jakub Jelinek <jakub at gcc dot gnu.org> --- It is enough to test it with: cd build-dir/gcc make check-gcc RUNTESTFLAGS="dg.exp='binop-xor1.c builtin-bswap-7.c pr21643.c pr46309.c' tree-ssa.exp='forwprop-28.c phi-opt-11.c phi-opt-2.c reassoc-32.c reassoc-33.c reassoc-34.c reassoc-35.c reassoc-36.c ssa-dom-thread-11.c ssa-dom-thread-14.c ssa-dom-thread-16.c ssa-dom-thread-4.c ssa-dom-thread-18.c ssa-ifcombine-13.c ssa-ifcombine-ccmp-1.c ssa-ifcombine-ccmp-2.c ssa-ifcombine-ccmp-3.c ssa-ifcombine-ccmp-4.c ssa-ifcombine-ccmp-5.c ssa-ifcombine-ccmp-6.c ssa-thread-11.c ssa-thread-14.c vrp47.c vrp87.c'" apply patch make cc1 repeat above make check-gcc