Ruby with this feature turned on. For the (somewhat
contrived/synthetic) scenario below, it looks like compiling
with profile guided optimization turned on, along with -O3,
results in about a 9% speed increase vs. -O3 alone.
YMMV. I compiled a version of Ruby-1.8.4 using the
following config options…configure CFLAGS="-O3 -fprofile-generate"
LDFLAGS=-fprofile-generate
Odd, I thought Ruby died a horrible death if compiled with -O3. Has
that changed with gcc 4.x?
Thanks,
Dan
This communication is the property of Qwest and may contain confidential
or
privileged information. Unauthorized use of this communication is
strictly
prohibited and may be unlawful. If you have received this communication
in error, please immediately notify the sender by reply e-mail and
destroy
all copies of the communication and any attachments.