From 05cf1ad82eb903eb07d7b379d0ea610bb43dd84a Mon Sep 17 00:00:00 2001 From: Eric Anholt Date: Fri, 11 Mar 2011 13:17:03 -0800 Subject: [PATCH] glsl: Reduce processing of expression trees in do_structure_splitting. Most of the time we don't have a non-uniform struct variable in the shader, so this cuts the time spent in do_structure_splitting during glean texCombine by about 2/3. --- src/glsl/opt_structure_splitting.cpp | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/src/glsl/opt_structure_splitting.cpp b/src/glsl/opt_structure_splitting.cpp index 014407c..2c1f6bb 100644 --- a/src/glsl/opt_structure_splitting.cpp +++ b/src/glsl/opt_structure_splitting.cpp @@ -151,6 +151,12 @@ ir_structure_reference_visitor::visit_enter(ir_dereference_record *ir) ir_visitor_status ir_structure_reference_visitor::visit_enter(ir_assignment *ir) { + /* If there are no structure references yet, no need to bother with + * processing the expression tree. + */ + if (this->variable_list.is_empty()) + return visit_continue_with_parent; + if (ir->lhs->as_dereference_variable() && ir->rhs->as_dereference_variable() && !ir->condition) { -- 2.7.4