diff options
Diffstat (limited to 'mesalib/src/glsl/ir_noop_swizzle.cpp')
-rw-r--r-- | mesalib/src/glsl/ir_noop_swizzle.cpp | 80 |
1 files changed, 0 insertions, 80 deletions
diff --git a/mesalib/src/glsl/ir_noop_swizzle.cpp b/mesalib/src/glsl/ir_noop_swizzle.cpp deleted file mode 100644 index 0403dfa4e..000000000 --- a/mesalib/src/glsl/ir_noop_swizzle.cpp +++ /dev/null @@ -1,80 +0,0 @@ -/* - * Copyright © 2010 Intel Corporation - * - * Permission is hereby granted, free of charge, to any person obtaining a - * copy of this software and associated documentation files (the "Software"), - * to deal in the Software without restriction, including without limitation - * the rights to use, copy, modify, merge, publish, distribute, sublicense, - * and/or sell copies of the Software, and to permit persons to whom the - * Software is furnished to do so, subject to the following conditions: - * - * The above copyright notice and this permission notice (including the next - * paragraph) shall be included in all copies or substantial portions of the - * Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR - * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL - * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER - * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING - * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER - * DEALINGS IN THE SOFTWARE. - */ - -/** - * \file ir_noop_swizzle.cpp - * - * If a swizzle doesn't change the order or count of components, then - * remove the swizzle so that other optimization passes see the value - * behind it. - */ - -#include "ir.h" -#include "ir_visitor.h" -#include "ir_rvalue_visitor.h" -#include "ir_print_visitor.h" -#include "glsl_types.h" - -class ir_noop_swizzle_visitor : public ir_rvalue_visitor { -public: - ir_noop_swizzle_visitor() - { - this->progress = false; - } - - void handle_rvalue(ir_rvalue **rvalue); - bool progress; -}; - -void -ir_noop_swizzle_visitor::handle_rvalue(ir_rvalue **rvalue) -{ - if (!*rvalue) - return; - - ir_swizzle *swiz = (*rvalue)->as_swizzle(); - if (!swiz || swiz->type != swiz->val->type) - return; - - int elems = swiz->val->type->vector_elements; - if (swiz->mask.x != 0) - return; - if (elems >= 2 && swiz->mask.y != 1) - return; - if (elems >= 3 && swiz->mask.z != 2) - return; - if (elems >= 4 && swiz->mask.w != 3) - return; - - this->progress = true; - *rvalue = swiz->val; -} - -bool -do_noop_swizzle(exec_list *instructions) -{ - ir_noop_swizzle_visitor v; - visit_list_elements(&v, instructions); - - return v.progress; -} |