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author | marha <marha@users.sourceforge.net> | 2010-12-28 16:10:20 +0000 |
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committer | marha <marha@users.sourceforge.net> | 2010-12-28 16:10:20 +0000 |
commit | 807c6931fe683fd844ceec1b023232181e6aae03 (patch) | |
tree | 1a131ed95fe2200d0ad33da8f7755a7ed2364adc /mesalib/src/glsl/ir_sub_to_add_neg.cpp | |
parent | 973099dda7e49e5abe29819a7124b3b1e7bd8b92 (diff) | |
download | vcxsrv-807c6931fe683fd844ceec1b023232181e6aae03.tar.gz vcxsrv-807c6931fe683fd844ceec1b023232181e6aae03.tar.bz2 vcxsrv-807c6931fe683fd844ceec1b023232181e6aae03.zip |
xserver and mesa git update 28-12-2010
Diffstat (limited to 'mesalib/src/glsl/ir_sub_to_add_neg.cpp')
-rw-r--r-- | mesalib/src/glsl/ir_sub_to_add_neg.cpp | 76 |
1 files changed, 0 insertions, 76 deletions
diff --git a/mesalib/src/glsl/ir_sub_to_add_neg.cpp b/mesalib/src/glsl/ir_sub_to_add_neg.cpp deleted file mode 100644 index 7ed8c1495..000000000 --- a/mesalib/src/glsl/ir_sub_to_add_neg.cpp +++ /dev/null @@ -1,76 +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_sub_to_add_neg.cpp - * - * Breaks an ir_binop_sub expression down to add(op0, neg(op1)) - * - * This simplifies expression reassociation, and for many backends - * there is no subtract operation separate from adding the negation. - * For backends with native subtract operations, they will probably - * want to recognize add(op0, neg(op1)) or the other way around to - * produce a subtract anyway. - */ - -#include "ir.h" - -class ir_sub_to_add_neg_visitor : public ir_hierarchical_visitor { -public: - ir_sub_to_add_neg_visitor() - { - this->progress = false; - } - - ir_visitor_status visit_leave(ir_expression *); - - bool progress; -}; - -bool -do_sub_to_add_neg(exec_list *instructions) -{ - ir_sub_to_add_neg_visitor v; - - visit_list_elements(&v, instructions); - return v.progress; -} - -ir_visitor_status -ir_sub_to_add_neg_visitor::visit_leave(ir_expression *ir) -{ - if (ir->operation != ir_binop_sub) - return visit_continue; - - void *mem_ctx = talloc_parent(ir); - - ir->operation = ir_binop_add; - ir->operands[1] = new(mem_ctx) ir_expression(ir_unop_neg, - ir->operands[1]->type, - ir->operands[1], - NULL); - - this->progress = true; - - return visit_continue; -} |