3 Dec
2003
3 Dec
'03
7:20 a.m.
On Wed, Dec 03, 2003 at 10:41:05 +0000, Mike Rawes wrote:
-O2 will include the -fstrict-aliasing flag for gcc,
so it's turned on here.
I've no idea what -O6 does (intel compiler, pgcc?). -O3 is the highest in the
gcc documentation.
-O6 is historical, I just keep it in cos it doesnt hurt. Interesting that
-O2 turns on strict aliasing... that changes the semantics of ANSI C,
though I've a feeling that C99 might specify strict aliasing.
- Steve