diff options
Diffstat (limited to 'gcc/doc/invoke.texi')
| -rw-r--r-- | gcc/doc/invoke.texi | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi index 215ab0d..8c17a81 100644 --- a/gcc/doc/invoke.texi +++ b/gcc/doc/invoke.texi @@ -12077,10 +12077,12 @@ This option is enabled by default at optimization levels @option{-O1}, such as forming of fused multiply-add operations if the target has native support for them. @option{-ffp-contract=on} enables floating-point expression contraction -if allowed by the language standard. This is currently not implemented -and treated equal to @option{-ffp-contract=off}. +if allowed by the language standard. This is implemented for C and C++, +where it enables contraction within one expression, but not across +different statements. -The default is @option{-ffp-contract=fast}. +The default is @option{-ffp-contract=off} for C in a standards compliant mode +(@option{-std=c11} or similar), @option{-ffp-contract=fast} otherwise. @opindex fomit-frame-pointer @item -fomit-frame-pointer |