commit 525cbe85ef522902d9e14ddc5a4b17f91f2ebea2
author Afonso Bordado <afonsobordado@az8.co> Fri Dec 27 17:09:51 2019 +0000
committer Afonso Bordado <afonsobordado@az8.co> Tue Dec 31 20:01:16 2019 +0000
tree 8b33dda792d75f4abbf1ea1cdc24c03350560bd3
parent 0e83688f477a2e98f94f342cd9a637a9f140a69d

pan/midgard: Optimize branches with inverted arguments

Remove the invert on arguments to branches, and invert the branch
condition instead. This saves one instruction per inverted argument.

Closes #2088

Signed-off-by: Afonso Bordado <afonsobordado@az8.co>
Reviewed-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>

src/panfrost/midgard/midgard_compile.c

diff --git a/src/panfrost/midgard/midgard_compile.c b/src/panfrost/midgard/midgard_compile.c
index b57291d..306d633 100644
--- a/src/panfrost/midgard/midgard_compile.c
+++ b/src/panfrost/midgard/midgard_compile.c
@@ -2679,6 +2679,7 @@
                         progress |= midgard_opt_fuse_dest_invert(ctx, block);
                         progress |= midgard_opt_csel_invert(ctx, block);
                         progress |= midgard_opt_drop_cmp_invert(ctx, block);
+                        progress |= midgard_opt_invert_branch(ctx, block);
                 }
         } while (progress);