This is the mail archive of the
libstdc++@gcc.gnu.org
mailing list for the libstdc++ project.
Re: [Patch] (Partial) fix for libstdc++/11706
- From: Paolo Carlini <pcarlini at suse dot de>
- To: Paolo Carlini <pcarlini at suse dot de>
- Cc: libstdc++ <libstdc++ at gcc dot gnu dot org>
- Date: Thu, 11 Mar 2004 01:37:55 +0100
- Subject: Re: [Patch] (Partial) fix for libstdc++/11706
- References: <404FA822.9010407@suse.de>
Hi again,
two quick follow ups...
The first one: of course, -fomit-frame-pointer, improves slightly
what we can currently do for the second snippet:
00000000 <f(double)>:
0: dd 44 24 04 fldl 0x4(%esp)
4: b8 01 00 00 00 mov $0x1,%eax
9: d9 e8 fld1
b: eb 05 jmp 12 <f(double)+0x12>
d: 8d 76 00 lea 0x0(%esi),%esi
10: d9 c9 fxch %st(1)
12: d9 c9 fxch %st(1)
14: a8 01 test $0x1,%al
16: d8 c8 fmul %st(0),%st
18: 74 02 je 1c <f(double)+0x1c>
1a: dc c9 fmul %st,%st(1)
1c: d1 e8 shr %eax
1e: 75 f0 jne 10 <f(double)+0x10>
20: dd d8 fstp %st(0)
22: c3 ret
The second one: perhaps, I'm saying *perhaps*, an ssa-branch wizard
cares about our non-linear iv loop... ;) Stay tuned!
Paolo.