https://gcc.gnu.org/bugzilla/show_bug.cgi?id=118539
Bug ID: 118539
Summary: Unsorted -march suggestions
Product: gcc
Version: 15.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: egor.pugin at gmail dot com
Target Milestone: ---
When specifying invalid -march argument, some valid suggestions are printed
sorted and some are not.
sorted example:
cc1plus: error: unknown value 'armv9.4-h+sve2x' for '-march'
cc1plus: note: valid arguments are: armv8-a armv8.1-a armv8.2-a armv8.3-a
armv8.4-a armv8.5-a armv8.6-a armv8.7-a armv8.8-a armv8.9-a armv8-r armv9-a
armv9.1-a armv9.2-a armv9.3-a armv9.4-a
unsorted example 1 (on arm64):
cc1plus: error: invalid feature modifier 'sve2x' in '-march=armv9.4-a+sve2x'
cc1plus: note: valid arguments are: rng flagm flagm2 lse fp simd dotprod sm4
rdma crc sha2 aes crypto sha3 fp16 fp16fml jscvt fcma rcpc rcpc2 rcpc3 frintts
i8mm bf16 sve sve-b16b16 f32mm f64mm sve2 sve2-aes sve2-bitperm sve2-sha3
sve2-sm4 sve2p1 sme memtag sb predres ssbs profile tme pauth ls64 wfxt xs
sme-f64f64 sme-i16i64 sme2 sme2p1 sme-b16b16 sme-f16f16 mops cssc lse128 d128
the gcs fp8 fp8fma ssve-fp8fma faminmax fp8dot4 ssve-fp8dot4 fp8dot2
ssve-fp8dot2 lut; did you mean 'sve2'?
unsorted example 2 (on x64):
error: unknown target CPU 'armv9.4-a+sve2x'
note: valid target CPU values are: nocona, core2, penryn, bonnell, atom,
silvermont, slm, goldmont, goldmont-plus, tremont, nehalem, corei7, westmere,
sandybridge, corei7-avx, ivybridge, core-avx-i, haswell, core-avx2, broadwell,
skylake, skylake-avx512, skx, cascadelake, cooperlake, cannonlake,
icelake-client, rocketlake, icelake-server, tigerlake, sapphirerapids,
alderlake, raptorlake, meteorlake, arrowlake, arrowlake-s, lunarlake,
gracemont, pantherlake, sierraforest, grandridge, graniterapids,
graniterapids-d, emeraldrapids, clearwaterforest, diamondrapids, knl, knm, k8,
athlon64, athlon-fx, opteron, k8-sse3, athlon64-sse3, opteron-sse3, amdfam10,
barcelona, btver1, btver2, bdver1, bdver2, bdver3, bdver4, znver1, znver2,
znver3, znver4, znver5, x86-64, x86-64-v2, x86-64-v3, x86-64-v4
Considering how many options there are, is it worth to print them all sorted
for the sake of readability and searching?
