vc4: Reuse uniform_data/contents indices when making uniforms.
This allows vc4_opt_cse.c to CSE-away operations involving the same
uniform values.
total instructions in shared programs: 37341 -> 36906 (-1.16%)
instructions in affected programs: 10233 -> 9798 (-4.25%)
total uniforms in shared programs: 10523 -> 10320 (-1.93%)
uniforms in affected programs: 2467 -> 2264 (-8.23%)
diff --git a/src/gallium/drivers/vc4/vc4_program.c b/src/gallium/drivers/vc4/vc4_program.c
index 0674e4f..c6b7edb 100644
--- a/src/gallium/drivers/vc4/vc4_program.c
+++ b/src/gallium/drivers/vc4/vc4_program.c
@@ -114,6 +114,13 @@
enum quniform_contents contents,
uint32_t data)
{
+ for (int i = 0; i < c->num_uniforms; i++) {
+ if (c->uniform_contents[i] == contents &&
+ c->uniform_data[i] == data) {
+ return (struct qreg) { QFILE_UNIF, i };
+ }
+ }
+
uint32_t uniform = c->num_uniforms++;
struct qreg u = { QFILE_UNIF, uniform };