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| author | Richard Guenther <rguenther@suse.de> | 2011-01-12 12:07:44 +0000 |
|---|---|---|
| committer | Richard Biener <rguenth@gcc.gnu.org> | 2011-01-12 12:07:44 +0000 |
| commit | a570fc16fa805652971e658e332fdbdb0f4fb935 (patch) | |
| tree | 2b06473bf59faf12f4234cbac5916d52dd904565 /gcc | |
| parent | 47782a9d27a4416cfab25b95f32f037b10833ecb (diff) | |
| download | gcc-a570fc16fa805652971e658e332fdbdb0f4fb935.zip gcc-a570fc16fa805652971e658e332fdbdb0f4fb935.tar.gz gcc-a570fc16fa805652971e658e332fdbdb0f4fb935.tar.bz2 | |
re PR c/46946 (contradiction in docs for -Ofast and -ffast-math)
2011-01-12 Richard Guenther <rguenther@suse.de>
PR other/46946
* doc/invoke.texi (ffast-math): Document it is turned on
with -Ofast.
From-SVN: r168709
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 6 | ||||
| -rw-r--r-- | gcc/doc/invoke.texi | 8 |
2 files changed, 10 insertions, 4 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 43af966..5cd40fa 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,9 @@ +2011-01-12 Richard Guenther <rguenther@suse.de> + + PR other/46946 + * doc/invoke.texi (ffast-math): Document it is turned on + with -Ofast. + 2011-01-12 Jan Hubicka <jh@suse.cz> PR tree-optimization/47233 diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi index 800c592..e5ba12c 100644 --- a/gcc/doc/invoke.texi +++ b/gcc/doc/invoke.texi @@ -7792,10 +7792,10 @@ Sets @option{-fno-math-errno}, @option{-funsafe-math-optimizations}, This option causes the preprocessor macro @code{__FAST_MATH__} to be defined. -This option is not turned on by any @option{-O} option since -it can result in incorrect output for programs which depend on -an exact implementation of IEEE or ISO rules/specifications for -math functions. It may, however, yield faster code for programs +This option is not turned on by any @option{-O} option besides +@option{-Ofast} since it can result in incorrect output for programs +which depend on an exact implementation of IEEE or ISO rules/specifications +for math functions. It may, however, yield faster code for programs that do not require the guarantees of these specifications. @item -fno-math-errno |