[Mesa-dev] [PATCH 8/8] i965/vec4: Do copy before constant propagation after opt_vector_float().

[Matt Turner]

total instructions in shared programs: 5877012 -> 5876617 (-0.01%)
instructions in affected programs:     33140 -> 32745 (-1.19%)

>From before the commit that allows VF constant propagation (which hurt
some programs) to here, the results are:

total instructions in shared programs: 5877951 -> 5876617 (-0.02%)
instructions in affected programs:     123444 -> 122110 (-1.08%)

with no programs hurt.
---
 src/mesa/drivers/dri/i965/brw_vec4.cpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/mesa/drivers/dri/i965/brw_vec4.cpp b/src/mesa/drivers/dri/i965/brw_vec4.cpp
index d36a735..c9ba338 100644
--- a/src/mesa/drivers/dri/i965/brw_vec4.cpp
+++ b/src/mesa/drivers/dri/i965/brw_vec4.cpp
@@ -1800,6 +1800,7 @@ vec4_visitor::run()
 
    if (opt_vector_float()) {
       opt_cse();
+      opt_copy_propagation(false);
       opt_copy_propagation();
       dead_code_eliminate();
    }
-- 
2.0.4