From 797424904bfcea7f7dcf28e539318f951a307d05 Mon Sep 17 00:00:00 2001 From: Anton Youdkevitch Date: Tue, 26 May 2020 04:23:04 -0700 Subject: [PATCH] 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. --- gcc/config/aarch64/aarch64.c | 18 +++++++++--------- 1 file changed, 9 insertions(+), 9 deletions(-) diff --git a/gcc/config/aarch64/aarch64.c b/gcc/config/aarch64/aarch64.c index 24c31c2d02cd..2e9672c4e1c1 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 */ }; -- 2.47.2