Commit 6c8242a7 authored by Vincent Lefèvre's avatar Vincent Lefèvre
Browse files

[src/mparam_h.in] Updated comment about GCC.

[From SVN r14588 (trunk)]
parent b7563873
......@@ -29,7 +29,14 @@ https://www.gnu.org/licenses/ or write to the Free Software Foundation, Inc.,
#include "generic/coverage/mparam.h"
/* Note: the different macros used here are those defined by gcc,
for example with gcc -mtune=native -dM -E -xc /dev/null */
for example with "gcc -mtune=native -dM -E -xc /dev/null".
The best parameters may depend on the local machine, not just
the architecture or even the target processor as accepted by
-mtune. Target-related options set by GCC can be obtained with
the "-Q --help=target --help=params" options (in addition to
-march=... and -mtune=...).
See https://gcc.gnu.org/pipermail/gcc-help/2021-September/140720.html */
#elif (defined (__tune_core2__) || defined (__tune_nocona__)) && defined (__x86_64) /* 64-bit Core 2 or Xeon */
#define MPFR_TUNE_CASE "src/x86_64/core2/mparam.h"
......
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