glsl: Don't dead-code eliminate a uniform initializer.
Partial fix for glsl-uniform-initializer-5.
diff --git a/src/glsl/ir_dead_code.cpp b/src/glsl/ir_dead_code.cpp
index 7ff580d..5cf5e99 100644
--- a/src/glsl/ir_dead_code.cpp
+++ b/src/glsl/ir_dead_code.cpp
@@ -92,6 +92,14 @@
/* If there are no assignments or references to the variable left,
* then we can remove its declaration.
*/
+
+ /* uniform initializers are precious, and could get used by another
+ * stage.
+ */
+ if (entry->var->mode == ir_var_uniform &&
+ entry->var->constant_value)
+ continue;
+
entry->var->remove();
progress = true;