From 807c6931fe683fd844ceec1b023232181e6aae03 Mon Sep 17 00:00:00 2001 From: marha Date: Tue, 28 Dec 2010 16:10:20 +0000 Subject: xserver and mesa git update 28-12-2010 --- mesalib/src/mesa/program/register_allocate.h | 71 ++++++++++++++++++++++++++++ 1 file changed, 71 insertions(+) create mode 100644 mesalib/src/mesa/program/register_allocate.h (limited to 'mesalib/src/mesa/program/register_allocate.h') diff --git a/mesalib/src/mesa/program/register_allocate.h b/mesalib/src/mesa/program/register_allocate.h new file mode 100644 index 000000000..bb9e2740a --- /dev/null +++ b/mesalib/src/mesa/program/register_allocate.h @@ -0,0 +1,71 @@ +/* + * 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. + * + * Authors: + * Eric Anholt + * + */ + +struct ra_class; +struct ra_regs; + +/* @{ + * Register set setup. + * + * This should be done once at backend initializaion, as + * ra_set_finalize is O(r^2*c^2). The registers may be virtual + * registers, such as aligned register pairs that conflict with the + * two real registers from which they are composed. + */ +struct ra_regs *ra_alloc_reg_set(unsigned int count); +unsigned int ra_alloc_reg_class(struct ra_regs *regs); +void ra_add_reg_conflict(struct ra_regs *regs, + unsigned int r1, unsigned int r2); +void ra_class_add_reg(struct ra_regs *regs, unsigned int c, unsigned int reg); +void ra_set_finalize(struct ra_regs *regs); +/** @} */ + +/** @{ Interference graph setup. + * + * Each interference graph node is a virtual variable in the IL. It + * is up to the user to ra_set_node_class() for the virtual variable, + * and compute live ranges and ra_node_interfere() between conflicting + * live ranges. + */ +struct ra_graph *ra_alloc_interference_graph(struct ra_regs *regs, + unsigned int count); +void ra_set_node_class(struct ra_graph *g, unsigned int n, unsigned int c); +void ra_add_node_interference(struct ra_graph *g, + unsigned int n1, unsigned int n2); +/** @} */ + +/** @{ Graph-coloring register allocation */ +GLboolean ra_simplify(struct ra_graph *g); +void ra_optimistic_color(struct ra_graph *g); +GLboolean ra_select(struct ra_graph *g); +GLboolean ra_allocate_no_spills(struct ra_graph *g); + +unsigned int ra_get_node_reg(struct ra_graph *g, unsigned int n); +void ra_set_node_spill_cost(struct ra_graph *g, unsigned int n, float cost); +int ra_get_best_spill_node(struct ra_graph *g); +/** @} */ + -- cgit v1.2.3