From: Chris Wilson <chris@chris-wilson.co.uk>
Date: Sun, 20 Feb 2011 15:36:52 +0000 (+0000)
Subject: i965: Micro-optimise check_state
X-Git-Tag: mesa-7.11-rc1~1954
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=8ea6e98c7be6483514769b03ffa6c6f4f7b2e0be;p=platform%2Fupstream%2Fmesa.git

i965: Micro-optimise check_state

Replace the intermediate tests due to the logical or with the bitwise
or.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
---

diff --git a/src/mesa/drivers/dri/i965/brw_state_upload.c b/src/mesa/drivers/dri/i965/brw_state_upload.c
index 8bb92fe..2d6fb37 100644
--- a/src/mesa/drivers/dri/i965/brw_state_upload.c
+++ b/src/mesa/drivers/dri/i965/brw_state_upload.c
@@ -181,11 +181,11 @@ void brw_destroy_state( struct brw_context *brw )
 /***********************************************************************
  */
 
-static GLboolean check_state( const struct brw_state_flags *a,
-			      const struct brw_state_flags *b )
+static GLuint check_state( const struct brw_state_flags *a,
+			   const struct brw_state_flags *b )
 {
-   return ((a->mesa & b->mesa) ||
-	   (a->brw & b->brw) ||
+   return ((a->mesa & b->mesa) |
+	   (a->brw & b->brw) |
 	   (a->cache & b->cache));
 }
 
@@ -377,9 +377,7 @@ void brw_validate_state( struct brw_context *brw )
       brw->state.dirty.brw |= BRW_NEW_VERTEX_PROGRAM;
    }
 
-   if (state->mesa == 0 &&
-       state->cache == 0 &&
-       state->brw == 0)
+   if ((state->mesa | state->cache | state->brw) == 0)
       return;
 
    brw->intel.Fallback = GL_FALSE; /* boolean, not bitfield */