[gcc r14-8190] Fix handling of X86_TUNE_AVOID_512FMA_CHAINS.

[gcc r14-8190] Fix handling of X86_TUNE_AVOID_512FMA_CHAINS.

[Jan Hubicka]

https://gcc.gnu.org/g:f74dd70c3c7ef2ac19bca33de5fb03a73fbcd339

commit r14-8190-gf74dd70c3c7ef2ac19bca33de5fb03a73fbcd339
Author: Jan Hubicka <jh@suse.cz>
Date:   Wed Jan 17 19:14:16 2024 +0100

    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.

Diff:
---
 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 3605c2c53fb..b6f634e9a32 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);