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Micro-optimize color_of()

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In almost all cases we already know in advance that
color_of() argument is different from NO_PIECE.

So avoid the check for NO_PIECE in color_of() and
test at caller site in the very few places where
this case could occur.

As a nice side effect, this patch fixes a (bogus)
warning under some versions of gcc.

No functional change.

Signed-off-by: Marco Costalba <mcostalba@gmail.com>
This commit is contained in:
Marco Costalba
2012-12-05 11:05:32 +01:00
parent 6a93488291
commit 22c557ca7c
2 changed files with 6 additions and 4 deletions
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4
src/types.h
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@@ -35,6 +35,7 @@
/// | only in 64-bit mode. For compiling requires hardware with
/// | popcnt support.
#include <cassert>
#include <cctype>
#include <climits>
#include <cstdlib>
@@ -391,7 +392,8 @@ inline PieceType type_of(Piece p) {
}
inline Color color_of(Piece p) {
return p == NO_PIECE ? NO_COLOR : Color(p >> 3);
assert(p != NO_PIECE);
return Color(p >> 3);
}
inline bool is_ok(Square s) {