Stupid Intel question
Stupid Intel question
- Subject: Stupid Intel question
- From: Urs Heckmann <email@hidden>
- Date: Fri, 17 Mar 2006 21:44:37 +0100
Hiya,
The port of AUs to x86 was quite easy, now I'm into optimization.
After having had some decent trouble to get -fstrict-aliasing and -
ftree-vectorize do anything useful (both of them confused type-casted
pointers in some of my optimization strategies, arrrgh, which doesn't
happen on PowerPC nor with Intel and Microsoft compilers for x86),
I've started profiling with Sharc.
Now.
I use -O3 but in Sharc's Assembly view the source code goes one line
after the other, obviously without *any* instruction scheduling.
Nothing changes when I explicitely add -fschedule-insns2.
I remember from the olf days on G5s that source code lines were
distributed all over the place in the actual result. Shouldn't I
expect the same on an Intel?
Any ideas?
Cheers,
;) Urs
P.S.: Is there an option that makes an Intel execute more than 2
instructions between two moves? :-p
urs heckmann
email@hidden
www.u-he.com
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