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| author | Wilco Dijkstra <wilco.dijkstra@arm.com> | 2020-11-19 16:14:11 +0000 |
|---|---|---|
| committer | Wilco Dijkstra <wdijkstr@arm.com> | 2020-11-19 16:14:11 +0000 |
| commit | 5c5a67e61bb8b97f46ec6581a7d187d89ffc2d88 (patch) | |
| tree | 00dc4488dc3b41bae13d811ca808320a0d10e170 /gcc/tree-vect-loop.c | |
| parent | 1d77928fc49b4f2487fd78db26bbebd00f881414 (diff) | |
| download | gcc-5c5a67e61bb8b97f46ec6581a7d187d89ffc2d88.zip gcc-5c5a67e61bb8b97f46ec6581a7d187d89ffc2d88.tar.gz gcc-5c5a67e61bb8b97f46ec6581a7d187d89ffc2d88.tar.bz2 | |
AArch64: Add cost table for Cortex-A76
Add an initial cost table for Cortex-A76 - this is copied from
cotexa57_extra_costs but updated based on the Optimization Guide.
Use the new cost table on all Neoverse tunings and ensure the tunings
are consistent for all. As a result more compact code is generated
with more combined shift+alu operations. Eg. -mcpu=cortex-a76 will now
merge the shifts in:
int f(int x, int y) { return (x & y << 3) * (x | y << 3); }
and w2, w0, w1, lsl 3
orr w0, w0, w1, lsl 3
mul w0, w2, w0
ret
SPEC2017 codesize improves by 0.02% and SPECINT2017 shows 0.24% gain.
2020-11-18 Wilco Dijkstra <wdijkstr@arm.com>
gcc/
* config/aarch64/aarch64.c (neoversen1_tunings): Use new
cortexa76_extra_costs.
(neoversev1_tunings): Likewise.
(neoversen2_tunines): Likewise.
* config/arm/aarch-cost-tables.h (cortexa76_extra_costs):
add new costs.
Diffstat (limited to 'gcc/tree-vect-loop.c')
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