On Mon, Aug 13, 2012 at 2:10 PM, Jakub Jelinek <ja...@redhat.com> wrote:
>> > To get the prefetchw cpuid flag, cpuid >> > function 0x80000001 needs to be called. >> > Previous to patch, function 0x7 is called. >> > >> > Bootstrapping and "make -k check" passes without failures. >> > Ok for trunk? >> >> IMHO you move it to a wrong spot, ecx bits of CPUID 0x80000001 are tested >> earlier. >> >> So I think you want this instead (bootstrap/regtest in progress): >> >> 2012-08-13 Ganesh Gopalasubramanian <ganesh.gopalasubraman...@amd.com> >> Jakub Jelinek <ja...@redhat.com> >> >> PR driver/54210 >> * config/i386/driver-i386.c (host_detect_local_cpu): Test bit_PRFCHW >> bit of CPUID 0x80000001 %ecx instead of CPUID 7 %ecx. >> * config/i386/cpuid.h (bits_PRFCHW): Move definition to CPUID >> 0x80000001 %ecx flags. > > Now bootstrapped/regtested on x86_64-linux and i686-linux, ok for trunk? OK, but I didn't find PRFCHW in the cpuid documentation to confirm the change. Thanks, Uros.
