[Bug target/100347] [11/12 Regression] GCC 11 does not recognize skylake; translates "march=native" to "x86_64"

[jakub at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100347

--- Comment #9 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
You could as well step through the driver-i386.c and cpuinfo.h code in the
debugger.
>From the info you've provided, seems you have __cpu_family 6 and __cpu_model
0x9e, so get_intel_cpu should reach:
    case 0x4e:
    case 0x5e:
      /* Skylake.  */
    case 0x8e:
    case 0x9e:
      /* Kaby Lake.  */
    case 0xa5:
    case 0xa6:
      /* Comet Lake.  */
      cpu = "skylake";
      CHECK___builtin_cpu_is ("corei7");
      CHECK___builtin_cpu_is ("skylake");
      cpu_model->__cpu_type = INTEL_COREI7;
      cpu_model->__cpu_subtype = INTEL_COREI7_SKYLAKE;
      break;