diff options
| author | Jonathan Gray <jsg@cvs.openbsd.org> | 2011-09-21 21:26:05 +0000 |
|---|---|---|
| committer | Jonathan Gray <jsg@cvs.openbsd.org> | 2011-09-21 21:26:05 +0000 |
| commit | d6e4fd47a867140aa7ee5a1cde03de5c628fd01e (patch) | |
| tree | fd936b38cb05e2af67ab4c2155cb5980b81af456 /share | |
| parent | b30cc46d0a6f9c2931eed4b2252015fd889702e4 (diff) | |
add a note about -ftree-vrp being removed from -O2
as it is known to be broken in 4.2.1
prompted by a discussion about other gcc bugs...
Diffstat (limited to 'share')
| -rw-r--r-- | share/man/man1/gcc-local.1 | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/share/man/man1/gcc-local.1 b/share/man/man1/gcc-local.1 index 72f9c82857f..c3004bbdeb8 100644 --- a/share/man/man1/gcc-local.1 +++ b/share/man/man1/gcc-local.1 @@ -1,4 +1,4 @@ -.\" $OpenBSD: gcc-local.1,v 1.24 2011/07/25 19:24:03 tedu Exp $ +.\" $OpenBSD: gcc-local.1,v 1.25 2011/09/21 21:26:04 jsg Exp $ .\" .\" Copyright (c) 2002 Marc Espie .\" Copyright (c) 2003 Anil Madhavapeddy @@ -25,7 +25,7 @@ .\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF .\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. .\" -.Dd $Mdocdate: July 25 2011 $ +.Dd $Mdocdate: September 21 2011 $ .Dt GCC-LOCAL 1 .Os .Sh NAME @@ -89,6 +89,13 @@ as this option causes issues on some legacy code. can cause surprising optimizations to occur, possibly deleting security critical overflow checks. .It +The +.Fl ftree-vrp +optimization is not included in the +.Fl O2 +option as it is known to be broken in +.Nm gcc 4.2.1 . +.It The option .Fl fno-builtin-<function> was backported from |