Commit 4bf29d15 by Wilco Dijkstra Committed by Wilco Dijkstra

[AArch64] PR79262: Adjust vector cost

PR79262 has been fixed for almost all AArch64 cpus, however the example is still
vectorized in a few cases, resulting in lower performance.  Adjust the vector
cost slightly so that so that -mcpu=cortex-a53 now has identical performance as
-mcpu=cortex-a57 on libquantum.

    gcc/
	PR target/79262
	* config/aarch64/aarch64.c (generic_vector_cost): Adjust
	vec_to_scalar_cost.

From-SVN: r278452
parent c286fb4e
......@@ -6,6 +6,12 @@
2019-11-19 Wilco Dijkstra <wdijkstr@arm.com>
PR target/79262
* config/aarch64/aarch64.c (generic_vector_cost): Adjust
vec_to_scalar_cost.
2019-11-19 Wilco Dijkstra <wdijkstr@arm.com>
* config/arm/arm-cpus.in (armv7): Set tune to Cortex-A53.
(armv7-a): Likewise.
(armv7ve): Likewise.
......@@ -447,7 +447,7 @@ static const struct cpu_vector_cost generic_vector_cost =
1, /* vec_int_stmt_cost */
1, /* vec_fp_stmt_cost */
2, /* vec_permute_cost */
1, /* vec_to_scalar_cost */
2, /* vec_to_scalar_cost */
1, /* scalar_to_vec_cost */
1, /* vec_align_load_cost */
1, /* vec_unalign_load_cost */
......
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