| commit | 966d905634de4433cea465fdcea19503c4ae260f | |
| author | David S. Miller <davem@davemloft.net> | |
| Thu, 14 Feb 2008 08:58:44 +0000 (14 00:58 -0800) | ||
| committer | David S. Miller <davem@davemloft.net> | |
| Mon, 18 Feb 2008 06:43:34 +0000 (17 22:43 -0800) | ||
| tree | 866315805e9a820fedc0904fde53069bdef8cf75 | treesnapshot (tar.gz zip) |
| parent | 54cd6ddec77b75e6926d73d263aec72255b24030 | commitdiff |
[SPARC64]: Add -mtune=ultrasparc3 if possible.
This gives better heuristics for the cost of a multiply (fixed
5 cycles), rather than the 'ultrasparc' setting (variable, and
unpredictable if the second argument is non-constant).
Example code size savings:
text data bss dec hex filename
3823690 304040 448880 4576610 45d562 vmlinux
3824521 304040 448880 4577441 45d8a1 vmlinux.orig
Signed-off-by: David S. Miller <davem@davemloft.net>
This gives better heuristics for the cost of a multiply (fixed
5 cycles), rather than the 'ultrasparc' setting (variable, and
unpredictable if the second argument is non-constant).
Example code size savings:
text data bss dec hex filename
3823690 304040 448880 4576610 45d562 vmlinux
3824521 304040 448880 4577441 45d8a1 vmlinux.orig
Signed-off-by: David S. Miller <davem@davemloft.net>
| arch/sparc64/Makefile | diffblobblamehistory |