Multiplication is commutative.
instructions in affected programs: 48314 -> 47954 (-0.75%)
---
src/mesa/drivers/dri/i965/brw_fs_cse.cpp | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/src/mesa/drivers/dri/i965/brw_fs_cse.cpp
b/src/mesa/drivers/dri/i965/brw_fs_cse.cpp
index 8012001..5fdbf46 100644
--- a/src/mesa/drivers/dri/i965/brw_fs_cse.cpp
+++ b/src/mesa/drivers/dri/i965/brw_fs_cse.cpp
@@ -128,7 +128,11 @@ operands_match(fs_inst *a, fs_inst *b)
fs_reg *xs = a->src;
fs_reg *ys = b->src;
- if (!is_expression_commutative(a->opcode)) {
+ if (a->opcode == BRW_OPCODE_MAD) {
+ return xs[0].equals(ys[0]) &&
+ ((xs[1].equals(ys[1]) && xs[2].equals(ys[2])) ||
+ (xs[2].equals(ys[1]) && xs[1].equals(ys[2])));
+ } else if (!is_expression_commutative(a->opcode)) {
bool match = true;
for (int i = 0; i < a->sources; i++) {
if (!xs[i].equals(ys[i])) {
--
2.0.4
_______________________________________________
mesa-dev mailing list
[email protected]
http://lists.freedesktop.org/mailman/listinfo/mesa-dev
