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| author | Philipp Tomsich <philipp.tomsich@vrull.eu> | 2023-03-27 09:16:22 +0200 |
|---|---|---|
| committer | Philipp Tomsich <philipp.tomsich@vrull.eu> | 2023-03-27 11:11:30 +0200 |
| commit | ff1f2f2412bda118f7ddc10e69bd4284d9b24b9e (patch) | |
| tree | f9bc681d8c5a97f92e8c2657157dd762bdf18a87 /gcc | |
| parent | 059961927624224c63c798873fc3b0c0c7abb0d0 (diff) | |
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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.cc: Update vector costs for ampere1.
Co-Authored-By: Jiangning Liu <jiangning.liu@amperecomputing.com>
Co-Authored-By: Manolis Tsamis <manolis.tsamis@vrull.eu>
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/config/aarch64/aarch64.cc | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/gcc/config/aarch64/aarch64.cc b/gcc/config/aarch64/aarch64.cc index b27f435..661fff65 100644 --- a/gcc/config/aarch64/aarch64.cc +++ b/gcc/config/aarch64/aarch64.cc @@ -1132,7 +1132,7 @@ 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 */ @@ -1148,17 +1148,17 @@ 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 */ |