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[Bug c/15431] inefficient register allocation
- From: "falk at debian dot org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 14 May 2004 10:08:00 -0000
- Subject: [Bug c/15431] inefficient register allocation
- References: <20040514085356.15431.douze@enseeiht.fr>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Additional Comments From falk at debian dot org 2004-05-14 10:07 -------
I can confirm this on alphaev68. The problem seems to be basically the same
as in PR 11488. We might even close this as a duplicate, but I'll leave that
for somebody else to decide.
% gcc -O3 cellbug.i test.c && ./a.out
3.003 ms / 5.466 ms
% gcc -fno-schedule-insns -O3 cellbug.i test.c && ./a.out
3.131 ms / 7.637 ms
% gcc -fnew-ra -O3 cellbug.i test.c && ./a.out
2.694 ms / 7.835 ms
% gcc -fnew-ra -fno-schedule-insns -O3 cellbug.i test.c && ./a.out
5.878 ms / 2.645 ms
--
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Ever Confirmed| |1
Keywords| |pessimizes-code
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=15431