From f74dd70c3c7ef2ac19bca33de5fb03a73fbcd339 Mon Sep 17 00:00:00 2001 From: Jan Hubicka Date: Wed, 17 Jan 2024 19:14:16 +0100 Subject: [PATCH] Fix handling of X86_TUNE_AVOID_512FMA_CHAINS. I have noticed quite bad pasto in handling of X86_TUNE_AVOID_512FMA_CHAINS. At the moment it is ignored, but X86_TUNE_AVOID_256FMA_CHAINS controls 512FMA too. This patch fixes it, we may want to re-check how that works on AVX512 machines. gcc/ChangeLog: * config/i386/i386-options.cc (ix86_option_override_internal): Fix handling of X86_TUNE_AVOID_512FMA_CHAINS. --- gcc/config/i386/i386-options.cc | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/gcc/config/i386/i386-options.cc b/gcc/config/i386/i386-options.cc index 3605c2c53fbd..b6f634e9a323 100644 --- a/gcc/config/i386/i386-options.cc +++ b/gcc/config/i386/i386-options.cc @@ -3248,7 +3248,7 @@ ix86_option_override_internal (bool main_args_p, = (cf_protection_level) (opts->x_flag_cf_protection | CF_SET); } - if (ix86_tune_features [X86_TUNE_AVOID_256FMA_CHAINS]) + if (ix86_tune_features [X86_TUNE_AVOID_512FMA_CHAINS]) SET_OPTION_IF_UNSET (opts, opts_set, param_avoid_fma_max_bits, 512); else if (ix86_tune_features [X86_TUNE_AVOID_256FMA_CHAINS]) SET_OPTION_IF_UNSET (opts, opts_set, param_avoid_fma_max_bits, 256); -- 2.47.2