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| author | Richard Sandiford <richard.sandiford@arm.com> | 2021-08-03 13:00:49 +0100 |
|---|---|---|
| committer | Richard Sandiford <richard.sandiford@arm.com> | 2021-08-03 13:00:49 +0100 |
| commit | 048039c49b96875144f67e7789fdea54abf7710b (patch) | |
| tree | 66aa1cc477b2c9289b5a5990dac0d9401d52a32d /libgcc | |
| parent | 9690309baf8294b0512b55b133bc102dc0dac5b5 (diff) | |
| download | gcc-048039c49b96875144f67e7789fdea54abf7710b.zip gcc-048039c49b96875144f67e7789fdea54abf7710b.tar.gz gcc-048039c49b96875144f67e7789fdea54abf7710b.tar.bz2 | |
aarch64: Add -mtune=neoverse-512tvb
This patch adds an option to tune for Neoverse cores that have
a total vector bandwidth of 512 bits (4x128 for Advanced SIMD
and a vector-length-dependent equivalent for SVE). This is intended
to be a compromise between tuning aggressively for a single core like
Neoverse V1 (which can be too narrow) and tuning for AArch64 cores
in general (which can be too wide).
-mcpu=neoverse-512tvb is equivalent to -mcpu=neoverse-v1
-mtune=neoverse-512tvb.
gcc/
* doc/invoke.texi: Document -mtune=neoverse-512tvb and
-mcpu=neoverse-512tvb.
* config/aarch64/aarch64-cores.def (neoverse-512tvb): New entry.
* config/aarch64/aarch64-tune.md: Regenerate.
* config/aarch64/aarch64.c (neoverse512tvb_sve_vector_cost)
(neoverse512tvb_sve_issue_info, neoverse512tvb_vec_issue_info)
(neoverse512tvb_vector_cost, neoverse512tvb_tunings): New structures.
(aarch64_adjust_body_cost_sve): Handle -mtune=neoverse-512tvb.
(aarch64_adjust_body_cost): Likewise.
Diffstat (limited to 'libgcc')
0 files changed, 0 insertions, 0 deletions