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* [gcc r14-5545] LoongArch: Increase cost of vector aligned store/load.
@ 2023-11-17 2:21 LuluCheng
0 siblings, 0 replies; only message in thread
From: LuluCheng @ 2023-11-17 2:21 UTC (permalink / raw)
To: gcc-cvs
https://gcc.gnu.org/g:37183018134049a70482a59b8f12180946ab8fa4
commit r14-5545-g37183018134049a70482a59b8f12180946ab8fa4
Author: Jiahao Xu <xujiahao@loongson.cn>
Date: Thu Nov 16 16:44:36 2023 +0800
LoongArch: Increase cost of vector aligned store/load.
Based on SPEC2017 performance evaluation results, it's better to make them equal
to the cost of unaligned store/load so as to avoid odd alignment peeling.
gcc/ChangeLog:
* config/loongarch/loongarch.cc
(loongarch_builtin_vectorization_cost): Adjust.
Diff:
---
gcc/config/loongarch/loongarch.cc | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/gcc/config/loongarch/loongarch.cc b/gcc/config/loongarch/loongarch.cc
index 738911661d7..d05743bec87 100644
--- a/gcc/config/loongarch/loongarch.cc
+++ b/gcc/config/loongarch/loongarch.cc
@@ -3893,11 +3893,9 @@ loongarch_builtin_vectorization_cost (enum vect_cost_for_stmt type_of_cost,
case scalar_stmt:
case scalar_load:
case vector_stmt:
- case vector_load:
case vec_to_scalar:
case scalar_to_vec:
case scalar_store:
- case vector_store:
return 1;
case vec_promote_demote:
@@ -3905,6 +3903,8 @@ loongarch_builtin_vectorization_cost (enum vect_cost_for_stmt type_of_cost,
return LASX_SUPPORTED_MODE_P (mode)
&& !LSX_SUPPORTED_MODE_P (mode) ? 2 : 1;
+ case vector_load:
+ case vector_store:
case unaligned_load:
case unaligned_store:
return 2;
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