[Bug target/103781] generic/cortex-a53 cost model for SLP for aarch64 is good

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103781

Andrew Pinski  changed:

   What|Removed |Added

 Status|UNCONFIRMED |NEW
   Last reconfirmed||2024-01-26
 Ever confirmed|0   |1

--- Comment #6 from Andrew Pinski  ---
Confirmed.

Note if sve is turned on, we get:
```
.L2:
ldr q30, [x1], 16
ldr q29, [x2], 16
mul z29.d, z30.d, z29.d
add v31.2d, v31.2d, v29.2d
cmp x1, x3
bne .L2
```
For the inner loop on the trunk which is 100% what you want as then it is
vectorized.

[Bug target/103781] generic/cortex-a53 cost model for SLP for aarch64 is good

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103781

Andrew Pinski  changed:

   What|Removed |Added

 CC||pinskia at gcc dot gnu.org

--- Comment #5 from Andrew Pinski  ---
I know that the generic cost model has changed on the trunk but I am not sure
this one is fixed ...

[Bug target/103781] generic/cortex-a53 cost model for SLP for aarch64 is good

[husseydevin at gmail dot com via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103781

--- Comment #4 from Devin Hussey  ---
Makes sense because the multiplier is what, 5 cycles on an A53?