From: Jan Hubicka <hubicka@gcc.gnu.org>
Date: Tue, 23 Jul 2019 09:35:18 +0000 (+0000)
Subject: i386-options.c (ix86_option_override_internal): Default PARAM_AVOID_FMA_MAX_BITS... 
X-Git-Tag: misc/cutover-git~3834
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=105c2795b0d63b2cc5cb224ba066fa8b9a0ad0ff;p=thirdparty%2Fgcc.git

i386-options.c (ix86_option_override_internal): Default PARAM_AVOID_FMA_MAX_BITS to 256 for znver2.

	* config/i386/i386-options.c (ix86_option_override_internal): Default
	PARAM_AVOID_FMA_MAX_BITS to 256 for znver2.

From-SVN: r273730
---

diff --git a/gcc/config/i386/i386-options.c b/gcc/config/i386/i386-options.c
index 6f8851aaf863..a1741c02e915 100644
--- a/gcc/config/i386/i386-options.c
+++ b/gcc/config/i386/i386-options.c
@@ -2779,7 +2779,11 @@ ix86_option_override_internal (bool main_args_p,
     opts->x_flag_cf_protection
       = (cf_protection_level) (opts->x_flag_cf_protection | CF_SET);
 
-  if (ix86_tune_features [X86_TUNE_AVOID_128FMA_CHAINS])
+  if (ix86_tune_features [X86_TUNE_AVOID_256FMA_CHAINS])
+    maybe_set_param_value (PARAM_AVOID_FMA_MAX_BITS, 256,
+			   opts->x_param_values,
+			   opts_set->x_param_values);
+  else if (ix86_tune_features [X86_TUNE_AVOID_128FMA_CHAINS])
     maybe_set_param_value (PARAM_AVOID_FMA_MAX_BITS, 128,
 			   opts->x_param_values,
 			   opts_set->x_param_values);