[Bug target/68602] i386: -mtune/arch options not all output by -v --help

[hjl.tools at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68602

H.J. Lu <hjl.tools at gmail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |RESOLVED
         Resolution|---                         |INVALID

--- Comment #1 from H.J. Lu <hjl.tools at gmail dot com> ---
(In reply to Andi Kleen from comment #0)
> gcc -v --help does not output all the possible options for -mtune=/-march=
> 
> For example corei7-avx is missing for arch, which is Sandy Bridge. tune is
> also mising all cpu names
> 
> 
> 
>   -march=CPU[,+EXTENSION...]
>                           generate code for CPU and EXTENSION, CPU is one of:
>                            generic32, generic64, i386, i486, i586, i686,
>                            pentium, pentiumpro, pentiumii, pentiumiii,
> pentium4,
>                            prescott, nocona, core, core2, corei7, l1om, k1om,
>                            k6, k6_2, athlon, opteron, k8, amdfam10, bdver1,
>                            bdver2, bdver3, bdver4, btver1, btver2
>                           EXTENSION is combination of:
>                            8087, 287, 387, no87, mmx, nommx, sse, sse2, sse3,
>                            ssse3, sse4.1, sse4.2, sse4, nosse, avx, avx2,
>                            avx512f, avx512cd, avx512er, avx512pf, avx512dq,
>                            avx512bw, avx512vl, noavx, vmx, vmfunc, smx,
> xsave,
>                            xsaveopt, xsavec, xsaves, aes, pclmul, fsgsbase,
>                            rdrnd, f16c, bmi2, fma, fma4, xop, lwp, movbe,
> cx16,
>                            ept, lzcnt, hle, rtm, invpcid, clflush, nop,
> syscall,
>                            rdtscp, 3dnow, 3dnowa, padlock, svme, sse4a, abm,
>                            bmi, tbm, adx, rdseed, prfchw, smap, mpx, sha,
>                            clflushopt, prefetchwt1, se1, clwb, pcommit,
>                            avx512ifma, avx512vbmi
>   -mtune=CPU              optimize for CPU, CPU is one of:
>                            generic32, generic64, i8086, i186, i286, i386,
> i486,
>                            i586, i686, pentium, pentiumpro, pentiumii,
>                            pentiumiii, pentium4, prescott, nocona, core,
> core2,
>                            corei7, l1om, k1om, k6, k6_2, athlon, opteron, k8,
>                            amdfam10, bdver1, bdver2, bdver3, bdver4, btver1,
>                            btver2

This comes from assembler, not GCC, whose -march/-mtune are different from
GCC.