From: Anton Youdkevitch Date: Tue, 26 May 2020 11:23:04 +0000 (-0700) Subject: Aarch64: Change costs for TX2 to expose more vectorization opportunities X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=2aeccecbf0d8c7e22926e0f740c46724da8a7be8;p=gcc.git Aarch64: Change costs for TX2 to expose more vectorization opportunities Make the costs such that they do not exaclty reflect the actual instructions costs from the manual but make the codegen emit the code we want it to. gcc/ChangeLog: * config/aarch64/aarch64.c (thunderx2t99_regmove_cost, thunderx2t99_vector_cost): Likewise. --- diff --git a/gcc/config/aarch64/aarch64.c b/gcc/config/aarch64/aarch64.c index 24c31c2d02c..2e9672c4e1c 100644 --- a/gcc/config/aarch64/aarch64.c +++ b/gcc/config/aarch64/aarch64.c @@ -535,9 +535,9 @@ static const struct cpu_regmove_cost thunderx2t99_regmove_cost = { 1, /* GP2GP */ /* Avoid the use of int<->fp moves for spilling. */ - 8, /* GP2FP */ - 8, /* FP2GP */ - 4 /* FP2FP */ + 5, /* GP2FP */ + 6, /* FP2GP */ + 3, /* FP2FP */ }; static const struct cpu_regmove_cost thunderx3t110_regmove_cost = @@ -704,15 +704,15 @@ static const struct cpu_vector_cost thunderx2t99_vector_cost = 6, /* scalar_fp_stmt_cost */ 4, /* scalar_load_cost */ 1, /* scalar_store_cost */ - 5, /* vec_int_stmt_cost */ - 6, /* vec_fp_stmt_cost */ + 4, /* vec_int_stmt_cost */ + 5, /* vec_fp_stmt_cost */ 10, /* vec_permute_cost */ 6, /* vec_to_scalar_cost */ 5, /* scalar_to_vec_cost */ - 8, /* vec_align_load_cost */ - 8, /* vec_unalign_load_cost */ - 4, /* vec_unalign_store_cost */ - 4, /* vec_store_cost */ + 4, /* vec_align_load_cost */ + 4, /* vec_unalign_load_cost */ + 1, /* vec_unalign_store_cost */ + 1, /* vec_store_cost */ 2, /* cond_taken_branch_cost */ 1 /* cond_not_taken_branch_cost */ };