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[Bug target/33717] slow code generated for 64-bit arithmetic
- From: "pinskia at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 31 Dec 2008 18:37:00 -0000
- Subject: [Bug target/33717] slow code generated for 64-bit arithmetic
- References: <bug-33717-3511@http.gcc.gnu.org/bugzilla/>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Comment #2 from pinskia at gcc dot gnu dot org 2008-12-31 18:37 -------
4.4 with the new register allocator (which is turned on by default):
C: 522 cycles
asm: 342 cycles
4.4 with the old one:
C: 749 cycles
asm: 344 cycles
So 4.4 is much better but still has extra instructions but that is a target
issue now.
--
pinskia at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Component|rtl-optimization |target
Ever Confirmed|0 |1
Keywords|ra |
Last reconfirmed|0000-00-00 00:00:00 |2008-12-31 18:37:00
date| |
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33717