The dataflow analysis used for global copy propagation is severely
broken, and I believe it doesn't actually do anything. Fixing it will
require a lot of changes, each of which might break things.
Once all the fixes land, we can re-enable this.
Signed-off-by: Kenneth Graunke <kenn...@whitecape.org>
---
src/mesa/drivers/dri/i965/brw_fs_copy_propagation.cpp | 2 ++
1 file changed, 2 insertions(+)
diff --git a/src/mesa/drivers/dri/i965/brw_fs_copy_propagation.cpp
b/src/mesa/drivers/dri/i965/brw_fs_copy_propagation.cpp
index 234f8bd..d8d1546 100644
--- a/src/mesa/drivers/dri/i965/brw_fs_copy_propagation.cpp
+++ b/src/mesa/drivers/dri/i965/brw_fs_copy_propagation.cpp
@@ -445,6 +445,7 @@ fs_visitor::opt_copy_propagate()
out_acp[b]) || progress;
}
+ #if 0
/* Do dataflow analysis for those available copies. */
fs_copy_prop_dataflow dataflow(mem_ctx, &cfg, out_acp);
@@ -464,6 +465,7 @@ fs_visitor::opt_copy_propagate()
progress = opt_copy_propagate_local(mem_ctx, block, in_acp) || progress;
}
+ #endif
for (int i = 0; i < cfg.num_blocks; i++)
delete [] out_acp[i];
--
1.8.3.4
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