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Revert "Prefetch earlier in qsearch()"
author
Joona Kiiski
<joona@zoox.com>
Wed, 21 Jun 2017 20:44:05 +0000
(13:44 -0700)
committer
Joona Kiiski
<joona@zoox.com>
Wed, 21 Jun 2017 20:45:03 +0000
(13:45 -0700)
This reverts commit
b73016bb41d4c2fad3126b2e0018d71a36e78331
.
No functional change
Closes #1144
src/search.cpp
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diff --git
a/src/search.cpp
b/src/search.cpp
index 5447ed3c6694c74b398effebbe3ad41a704e9778..9f4ba00d1b9cd3ea5155ca63dc77564cf8dde335 100644
(file)
--- a/
src/search.cpp
+++ b/
src/search.cpp
@@
-1262,9
+1262,6
@@
moves_loop: // When in check search starts from here
{
assert(is_ok(move));
- // Speculative prefetch as early as possible
- prefetch(TT.first_entry(pos.key_after(move)));
-
givesCheck = type_of(move) == NORMAL && !pos.discovered_check_candidates()
? pos.check_squares(type_of(pos.piece_on(from_sq(move)))) & to_sq(move)
: pos.gives_check(move);
@@
-1306,6
+1303,9
@@
moves_loop: // When in check search starts from here
&& !pos.see_ge(move))
continue;
+ // Speculative prefetch as early as possible
+ prefetch(TT.first_entry(pos.key_after(move)));
+
// Check for legality just before making the move
if (!pos.legal(move))
{