mirror of https://gitlab.freedesktop.org/mesa/mesa
79 lines
2.6 KiB
C
79 lines
2.6 KiB
C
/*
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* Copyright (C) 2021 Collabora, Ltd.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#include "compiler.h"
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#include "util/u_memory.h"
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/* Validatation doesn't make sense in release builds */
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#ifndef NDEBUG
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/* Validate that all sources are initialized in all read components. This is
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* required for correct register allocation. We check a weaker condition, that
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* all sources that are read are written at some point (equivalently, the live
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* set is empty at the start of the program). TODO: Strengthen */
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bool
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bi_validate_initialization(bi_context *ctx)
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{
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bool success = true;
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/* Calculate the live set */
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bi_block *entry = bi_entry_block(ctx);
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unsigned temp_count = bi_max_temp(ctx);
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bi_invalidate_liveness(ctx);
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bi_compute_liveness(ctx);
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/* Validate that the live set is indeed empty */
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for (unsigned i = 0; i < temp_count; ++i) {
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if (entry->live_in[i] == 0) continue;
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fprintf(stderr, "%s%u\n", (i & PAN_IS_REG) ? "r" : "", i >> 1);
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success = false;
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}
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return success;
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}
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void
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bi_validate(bi_context *ctx, const char *after)
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{
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bool fail = false;
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if (bifrost_debug & BIFROST_DBG_NOVALIDATE)
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return;
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if (!bi_validate_initialization(ctx)) {
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fprintf(stderr, "Uninitialized data read after %s\n", after);
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fail = true;
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}
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/* TODO: Validate more invariants */
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if (fail) {
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bi_print_shader(ctx, stderr);
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exit(1);
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}
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}
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#endif /* NDEBUG */
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