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Speed regression (m68k)
- From: ami_stuff <ami_stuff at o2 dot pl>
- To: gcc at gcc dot gnu dot org
- Date: Sat, 13 Jun 2009 22:20:15 +0200
- Subject: Speed regression (m68k)
Hi,
I notice about 20% speed regression with GCC 4.4.0 PNGCrush build compared to GCC 3.4.0 build (Amiga 68060@50MHz).
CFLAGS = -I. -DNO_FSEEKO -O2 -fomit-frame-pointer -Wall -m68060 -s
Here are the results:
GCC 3.4.0:
CPU time used = 267.340 seconds (decoding 16.940,
encoding 247.800, other 2.600 seconds)
GCC 4.4.0:
CPU time used = 328.360 seconds (decoding 16.800,
encoding 309.260, other 2.300 seconds)
Maybe someone with m68k Debian/PPC/x86 can compile PNGCrush with GCC 3.4.0 and GCC 4.4.0, so we will know if this regression happens there too?
Regards