/*
 * Copyright (C) 2020-2021 Collabora Ltd.
 *
 * 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 MERCHANTAAGXLITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIAAGXLITY, 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 (Collabora):
 *      Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
 */

#ifndef __AGX_TEST_H
#define __AGX_TEST_H

#include <stdio.h>
#include <inttypes.h>
#include "agx_compiler.h"
#include "agx_builder.h"

/* Helper to generate a agx_builder suitable for creating test instructions */
static inline agx_builder *
agx_test_builder(void *memctx)
{
   agx_context *ctx = rzalloc(memctx, agx_context);
   list_inithead(&ctx->blocks);

   agx_block *blk = rzalloc(ctx, agx_block);
   util_dynarray_init(&blk->predecessors, NULL);

   list_addtail(&blk->link, &ctx->blocks);
   list_inithead(&blk->instructions);

   agx_builder *b = rzalloc(memctx, agx_builder);
   b->shader = ctx;
   b->cursor = agx_after_block(blk);

   return b;
}

/* Helper to compare for logical equality of instructions. Need to compare the
 * pointers, then compare raw data.
 */
static inline bool
agx_instr_equal(agx_instr *A, agx_instr *B)
{
   unsigned pointers = sizeof(struct list_head) + sizeof(agx_index *);

   if (A->nr_srcs != B->nr_srcs)
      return false;

   if (memcmp(A->src, B->src, A->nr_srcs * sizeof(agx_index)))
      return false;

   return memcmp((uint8_t *) A    + pointers,
                 (uint8_t *) B    + pointers,
                 sizeof(agx_instr) - pointers) == 0;
}

static inline bool
agx_block_equal(agx_block *A, agx_block *B)
{
   if (list_length(&A->instructions) != list_length(&B->instructions))
      return false;

   list_pair_for_each_entry(agx_instr, insA, insB,
                            &A->instructions, &B->instructions, link) {
      if (!agx_instr_equal(insA, insB))
         return false;
   }

   return true;
}

static inline bool
agx_shader_equal(agx_context *A, agx_context *B)
{
   if (list_length(&A->blocks) != list_length(&B->blocks))
      return false;

   list_pair_for_each_entry(agx_block, blockA, blockB,
                            &A->blocks, &B->blocks, link) {
      if (!agx_block_equal(blockA, blockB))
         return false;
   }

   return true;
}

#define ASSERT_SHADER_EQUAL(A, B) \
   if (!agx_shader_equal(A, B)) { \
      ADD_FAILURE(); \
      fprintf(stderr, "Pass produced unexpected results"); \
      fprintf(stderr, "  Actual:\n"); \
      agx_print_shader(A, stderr); \
      fprintf(stderr, " Expected:\n"); \
      agx_print_shader(B, stderr); \
      fprintf(stderr, "\n"); \
   } \

#define INSTRUCTION_CASE(instr, expected, pass) do { \
   agx_builder *A = agx_test_builder(mem_ctx); \
   agx_builder *B = agx_test_builder(mem_ctx); \
   { \
      agx_builder *b = A; \
      instr; \
   } \
   { \
      agx_builder *b = B; \
      expected; \
   } \
   pass(A->shader); \
   ASSERT_SHADER_EQUAL(A->shader, B->shader); \
} while(0)

#endif
