Module: Mesa Branch: glsl2 Commit: 2927c81ed10c0dc617f734c00376d0582ac3c061 URL: http://cgit.freedesktop.org/mesa/mesa/commit/?id=2927c81ed10c0dc617f734c00376d0582ac3c061
Author: Eric Anholt <[email protected]> Date: Tue Jul 20 14:21:43 2010 -0700 glsl2: Don't mark a variable as constant if it was used as an out param. --- src/glsl/ir_constant_variable.cpp | 23 +++++++++++++++++++++++ 1 files changed, 23 insertions(+), 0 deletions(-) diff --git a/src/glsl/ir_constant_variable.cpp b/src/glsl/ir_constant_variable.cpp index ef5e1e4..c5ccd52 100644 --- a/src/glsl/ir_constant_variable.cpp +++ b/src/glsl/ir_constant_variable.cpp @@ -47,6 +47,7 @@ struct assignment_entry { class ir_constant_variable_visitor : public ir_hierarchical_visitor { public: virtual ir_visitor_status visit_enter(ir_assignment *); + virtual ir_visitor_status visit_enter(ir_call *); exec_list list; }; @@ -107,6 +108,28 @@ ir_constant_variable_visitor::visit_enter(ir_assignment *ir) return visit_continue; } +ir_visitor_status +ir_constant_variable_visitor::visit_enter(ir_call *ir) +{ + exec_list_iterator sig_iter = ir->get_callee()->parameters.iterator(); + foreach_iter(exec_list_iterator, iter, *ir) { + ir_rvalue *param_rval = (ir_rvalue *)iter.get(); + ir_variable *param = (ir_variable *)sig_iter.get(); + + if (param->mode == ir_var_out || + param->mode == ir_var_inout) { + ir_variable *var = param_rval->variable_referenced(); + struct assignment_entry *entry; + + assert(var); + entry = get_assignment_entry(var, &this->list); + entry->assignment_count++; + } + sig_iter.next(); + } + return visit_continue; +} + /** * Does a copy propagation pass on the code present in the instruction stream. */ _______________________________________________ mesa-commit mailing list [email protected] http://lists.freedesktop.org/mailman/listinfo/mesa-commit
