Mesa (master): i965: Make gen6_resolve_implied_move a no-op for MRF sources .
Kenneth Graunke
kwg at kemper.freedesktop.org
Fri Dec 2 10:50:41 UTC 2011
Module: Mesa
Branch: master
Commit: e304aa3600f865db533d273e2c1a554cb6a54f05
URL: http://cgit.freedesktop.org/mesa/mesa/commit/?id=e304aa3600f865db533d273e2c1a554cb6a54f05
Author: Kenneth Graunke <kenneth at whitecape.org>
Date: Mon Nov 14 19:49:54 2011 -0800
i965: Make gen6_resolve_implied_move a no-op for MRF sources.
Attempting to move an MRF to a MRF is not only pointless, it will fail
because MRFs are read-only, resulting in garbage in your register.
If we already set up a MRF source, there's nothing to resolve anyway.
Signed-off-by: Kenneth Graunke <kenneth at whitecape.org>
Reviewed-by: Eric Anholt <eric at anholt.net>
---
src/mesa/drivers/dri/i965/brw_eu_emit.c | 3 +++
1 files changed, 3 insertions(+), 0 deletions(-)
diff --git a/src/mesa/drivers/dri/i965/brw_eu_emit.c b/src/mesa/drivers/dri/i965/brw_eu_emit.c
index 60350ca..9d8c701 100644
--- a/src/mesa/drivers/dri/i965/brw_eu_emit.c
+++ b/src/mesa/drivers/dri/i965/brw_eu_emit.c
@@ -67,6 +67,9 @@ gen6_resolve_implied_move(struct brw_compile *p,
if (intel->gen < 6)
return;
+ if (src->file == BRW_MESSAGE_REGISTER_FILE)
+ return;
+
if (src->file != BRW_ARCHITECTURE_REGISTER_FILE || src->nr != BRW_ARF_NULL) {
brw_push_insn_state(p);
brw_set_mask_control(p, BRW_MASK_DISABLE);
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