i965: Validate the IR tree after doing our custom optimization passes.

This wouldn't catch the last failure fixed in them, because we don't
validate assignments well (due to the fact that we've got a pretty
glaring inconsistency in how we handle assignment writemasking), but
it could catch other failure we may produce.

diff --git a/src/mesa/drivers/dri/i965/brw_fs.cpp b/src/mesa/drivers/dri/i965/brw_fs.cpp
index 749a2f2eb797a94960c19d32f943499b7840e316..f8b06226d791723d7fd3ed0a25dd7837de89ac43 100644 (file)
--- a/src/mesa/drivers/dri/i965/brw_fs.cpp
+++ b/src/mesa/drivers/dri/i965/brw_fs.cpp
@@ -144,6 +144,8 @@ brw_link_shader(GLcontext *ctx, struct gl_shader_program *prog)
            progress = do_common_optimization(shader->ir, true) || progress;
         } while (progress);
 
+        validate_ir_tree(shader->ir);
+
         reparent_ir(shader->ir, shader->ir);
         talloc_free(mem_ctx);
       }