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[Aarch64] Fix vec_perm cost for thunderx2t99

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Here is the one-liner that fixes the incorrect
vec_perm cost for thunderx2t99 chip.
With the patch applied 526.blender of CPU2017
gets ~5% improvement with no measurable changes
for other benchmarks.

2019-11-05  Anton Youdkevitch  <anton.youdkevitch@bell-sw.com>

	* config/aarch64/aarch64.c (thunderx2t99_vector_cost):
	Change vec_perm field to 10.

From-SVN: r277826
This commit is contained in:
Anton Youdkevitch 2019-11-05 12:07:53 +00:00 committed by Kyrylo Tkachov
parent dd2f3208c1
commit 5aef51c219
2 changed files with 6 additions and 1 deletions
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5
gcc/ChangeLog
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@ -1,3 +1,8 @@
2019-11-05 Anton Youdkevitch <anton.youdkevitch@bell-sw.com>
* config/aarch64/aarch64.c (thunderx2t99_vector_cost):
Change vec_perm field to 10.
2019-11-05 Arnaud Charlet <charlet@adacore.com>
* doc/install.texi: Further fix syntax for html generation.

2
gcc/config/aarch64/aarch64.c
View File

@ -585,7 +585,7 @@ static const struct cpu_vector_cost thunderx2t99_vector_cost =
1, /* scalar_store_cost */
5, /* vec_int_stmt_cost */
6, /* vec_fp_stmt_cost */
3, /* vec_permute_cost */
10, /* vec_permute_cost */
6, /* vec_to_scalar_cost */
5, /* scalar_to_vec_cost */
8, /* vec_align_load_cost */