src/mesa/drivers/dri/i965/brw_fs_validate.cpp

/*
 * Copyright © 2015 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 brw_fs_validate.cpp
 *
 * Implements a pass that validates various invariants of the IR.  The current
 * pass only validates that GRF's uses are sane.  More can be added later.
 */

#include "brw_fs.h"
#include "brw_cfg.h"

#define fsv_assert(cond) \
   if (!(cond)) { \
      fprintf(stderr, "ASSERT: Scalar %s validation failed!\n", stage_abbrev); \
      dump_instruction(inst, stderr); \
      fprintf(stderr, "%s:%d: %s\n", __FILE__, __LINE__, #cond); \
      abort(); \
   }

void
fs_visitor::validate()
{
   foreach_block_and_inst (block, fs_inst, inst, cfg) {
      if (inst->dst.file == VGRF) {
         fsv_assert(inst->dst.offset / REG_SIZE + regs_written(inst) <=
                    alloc.sizes[inst->dst.nr]);
      }

      for (unsigned i = 0; i < inst->sources; i++) {
         if (inst->src[i].file == VGRF) {
            fsv_assert(inst->src[i].offset / REG_SIZE + regs_read(inst, i) <=
                       alloc.sizes[inst->src[i].nr]);
         }
      }
   }
}