https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100328
--- Comment #6 from Kewen Lin <linkw at gcc dot gnu.org> --- Created attachment 51066 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=51066&action=edit aarch64 XPASS failure list The patch v3 bootstrapped and regression-tested on x86_64-redhat-linux and powerpc64le-linux-gnu, but still have some "XFAIL -> XPASS" regression failures on aarch64-linux-gnu, I think these remaining failures are expected (assembly gets improved). Need Richard's help to double check/confirm them. For example, for div_f16.c, mad_f32.c and sub_f64.c, the related different assembly looks like below: BEFORE: div_h4_f16_x_untied: mov z4.h, h4 movprfx z0, z1 fdiv z0.h, p0/m, z0.h, z4.h ret mad_s4_f32_x_untied: mov z4.s, s4 movprfx z0, z4 fmla z0.s, p0/m, z1.s, z2.s ret sub_d4_f64_x_untied: mov z4.d, d4 movprfx z0, z1 fsub z0.d, p0/m, z0.d, z4.d ret AFTER: div_h4_f16_x_untied: mov z0.h, h4 fdivr z0.h, p0/m, z0.h, z1.h ret mad_s4_f32_x_untied: mov z0.s, s4 fmla z0.s, p0/m, z1.s, z2.s ret sub_d4_f64_x_untied: mov z0.d, d4 fsubr z0.d, p0/m, z0.d, z1.d ret The assembly with this patch saves movprfx.
