[gcc r11-10621] aarch64: update ampere1 vectorization cost

[gcc r11-10621] aarch64: update ampere1 vectorization cost

[Philipp Tomsich]

https://gcc.gnu.org/g:5c924482413a0a74a4db3dab05b469d7279d370e

commit r11-10621-g5c924482413a0a74a4db3dab05b469d7279d370e
Author: Philipp Tomsich <philipp.tomsich@vrull.eu>
Date:   Mon Mar 27 09:16:22 2023 +0200

    aarch64: update ampere1 vectorization cost
    
    The original submission of AmpereOne (-mcpu=ampere1) costs occurred
    prior to exhaustive testing of vectorizable workloads against
    hardware.
    
    Adjust the vector costs to achieve the best results and more closely
    match the underlying hardware.
    
    gcc/ChangeLog:
    
            * config/aarch64/aarch64.c: Update vector costs for ampere1.
    
    Co-Authored-By: Jiangning Liu <jiangning.liu@amperecomputing.com>
    Co-Authored-By: Manolis Tsamis <manolis.tsamis@vrull.eu>
    
    (cherry picked from commit ff1f2f2412bda118f7ddc10e69bd4284d9b24b9e)

Diff:
---
 gcc/config/aarch64/aarch64.c | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/gcc/config/aarch64/aarch64.c b/gcc/config/aarch64/aarch64.c
index 0622c134b9d..81032662256 100644
--- a/gcc/config/aarch64/aarch64.c
+++ b/gcc/config/aarch64/aarch64.c
@@ -1070,7 +1070,7 @@ static const struct cpu_vector_cost thunderx3t110_vector_cost =
 
 static const advsimd_vec_cost ampere1_advsimd_vector_cost =
 {
-  3, /* int_stmt_cost  */
+  1, /* int_stmt_cost  */
   3, /* fp_stmt_cost  */
   0, /* ld2_st2_permute_cost  */
   0, /* ld3_st3_permute_cost  */
@@ -1086,17 +1086,17 @@ static const advsimd_vec_cost ampere1_advsimd_vector_cost =
   8, /* store_elt_extra_cost  */
   6, /* vec_to_scalar_cost  */
   7, /* scalar_to_vec_cost  */
-  5, /* align_load_cost  */
-  5, /* unalign_load_cost  */
-  2, /* unalign_store_cost  */
-  2  /* store_cost  */
+  4, /* align_load_cost  */
+  4, /* unalign_load_cost  */
+  1, /* unalign_store_cost  */
+  1  /* store_cost  */
 };
 
 /* Ampere-1 costs for vector insn classes.  */
 static const struct cpu_vector_cost ampere1_vector_cost =
 {
   1, /* scalar_int_stmt_cost  */
-  1, /* scalar_fp_stmt_cost  */
+  3, /* scalar_fp_stmt_cost  */
   4, /* scalar_load_cost  */
   1, /* scalar_store_cost  */
   1, /* cond_taken_branch_cost  */