| commit | c2b0e2fea2ef7a183233d3b86c37c5d4bcb89544 | |
| author | Aurelien Jarno <aurelien@aurel32.net> | |
| Wed, 19 Sep 2012 20:00:22 +0000 (19 22:00 +0200) | ||
| committer | Aurelien Jarno <aurelien@aurel32.net> | |
| Sat, 22 Sep 2012 13:10:21 +0000 (22 15:10 +0200) | ||
| tree | f24aab079acff1f803b587fca58fa53b1c7cd183 | treesnapshot (tar.gz zip) |
| parent | b336ceb6918b8f9eb54dcbb1043521482c7be83b | commitdiff |
tcg/optimize: prefer the "op a, a, b" form for commutative ops
The "op a, a, b" form is better handled on non-RISC host than the "op
a, b, a" form, so swap the arguments to this form when possible, and
when b is not a constant.
This reduces the number of generated instructions by a tiny bit.
Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
The "op a, a, b" form is better handled on non-RISC host than the "op
a, b, a" form, so swap the arguments to this form when possible, and
when b is not a constant.
This reduces the number of generated instructions by a tiny bit.
Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
| tcg/optimize.c | diffblobblamehistory |