diff options
Diffstat (limited to 'gcc/c-opts.c')
| -rw-r--r-- | gcc/c-opts.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/gcc/c-opts.c b/gcc/c-opts.c index 334577a..3953991 100644 --- a/gcc/c-opts.c +++ b/gcc/c-opts.c @@ -1013,6 +1013,20 @@ c_common_post_options (const char **pfilename) C_COMMON_OVERRIDE_OPTIONS; #endif + /* Excess precision other than "fast" requires front-end + support. */ + if (c_dialect_cxx ()) + { + if (flag_excess_precision_cmdline == EXCESS_PRECISION_STANDARD + && TARGET_FLT_EVAL_METHOD_NON_DEFAULT) + sorry ("-fexcess-precision=standard for C++"); + flag_excess_precision_cmdline = EXCESS_PRECISION_FAST; + } + else if (flag_excess_precision_cmdline == EXCESS_PRECISION_DEFAULT) + flag_excess_precision_cmdline = (flag_iso + ? EXCESS_PRECISION_STANDARD + : EXCESS_PRECISION_FAST); + /* By default we use C99 inline semantics in GNU99 or C99 mode. C99 inline semantics are not supported in GNU89 or C89 mode. */ if (flag_gnu89_inline == -1) |