From: Philipp Tomsich Date: Mon, 27 Mar 2023 07:16:22 +0000 (+0200) Subject: aarch64: update ampere1 vectorization cost X-Git-Tag: basepoints/gcc-14~332 X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=ff1f2f2412bda118f7ddc10e69bd4284d9b24b9e;p=thirdparty%2Fgcc.git 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 Co-Authored-By: Manolis Tsamis --- diff --git a/gcc/config/aarch64/aarch64.cc b/gcc/config/aarch64/aarch64.cc index b27f4354031f..661fff65cea5 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 */