array_refcount_test.cpp - Android社区 - https://www.androidos.net.cn/

/*
 * Copyright © 2016 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.
 */
#include <gtest/gtest.h>
#include "ir.h"
#include "ir_array_refcount.h"
#include "ir_builder.h"
#include "util/hash_table.h"

using namespace ir_builder;

class array_refcount_test : public ::testing::Test {
public:
   virtual void SetUp();
   virtual void TearDown();

exec_list instructions;
   ir_factory *body;
   void *mem_ctx;

/**
    * glsl_type for a vec4[3][4][5].
    *
    * The exceptionally verbose name is picked because it matches the syntax
    * of http://cdecl.org/.
    */
   const glsl_type *array_3_of_array_4_of_array_5_of_vec4;

/**
    * glsl_type for a int[3].
    *
    * The exceptionally verbose name is picked because it matches the syntax
    * of http://cdecl.org/.
    */
   const glsl_type *array_3_of_int;

/**
    * Wrapper to access private member "bits" of ir_array_refcount_entry
    *
    * The test class is a friend to ir_array_refcount_entry, but the
    * individual tests are not part of the class.  Since the friendliness of
    * the test class does not extend to the tests, provide a wrapper.
    */
   const BITSET_WORD *get_bits(const ir_array_refcount_entry &entry)
   {
      return entry.bits;
   }

/**
    * Wrapper to access private member "num_bits" of ir_array_refcount_entry
    *
    * The test class is a friend to ir_array_refcount_entry, but the
    * individual tests are not part of the class.  Since the friendliness of
    * the test class does not extend to the tests, provide a wrapper.
    */
   unsigned get_num_bits(const ir_array_refcount_entry &entry)
   {
      return entry.num_bits;
   }

/**
    * Wrapper to access private member "array_depth" of ir_array_refcount_entry
    *
    * The test class is a friend to ir_array_refcount_entry, but the
    * individual tests are not part of the class.  Since the friendliness of
    * the test class does not extend to the tests, provide a wrapper.
    */
   unsigned get_array_depth(const ir_array_refcount_entry &entry)
   {
      return entry.array_depth;
   }
};

void
array_refcount_test::SetUp()
{
   mem_ctx = ralloc_context(NULL);

instructions.make_empty();
   body = new ir_factory(&instructions, mem_ctx);

/* The type of vec4 x[3][4][5]; */
   const glsl_type *const array_5_of_vec4 =
      glsl_type::get_array_instance(glsl_type::vec4_type, 5);
   const glsl_type *const array_4_of_array_5_of_vec4 =
      glsl_type::get_array_instance(array_5_of_vec4, 4);
   array_3_of_array_4_of_array_5_of_vec4 =
      glsl_type::get_array_instance(array_4_of_array_5_of_vec4, 3);

array_3_of_int = glsl_type::get_array_instance(glsl_type::int_type, 3);
}

void
array_refcount_test::TearDown()
{
   delete body;
   body = NULL;

ralloc_free(mem_ctx);
   mem_ctx = NULL;
}

static operand
deref_array(operand array, operand index)
{
   void *mem_ctx = ralloc_parent(array.val);

ir_rvalue *val = new(mem_ctx) ir_dereference_array(array.val, index.val);

return operand(val);
}

static operand
deref_struct(operand s, const char *field)
{
   void *mem_ctx = ralloc_parent(s.val);

ir_rvalue *val = new(mem_ctx) ir_dereference_record(s.val, field);

return operand(val);
}

/**
 * Verify that only the specified set of ir_variables exists in the hash table
 */
static void
validate_variables_in_hash_table(struct hash_table *ht,
                                 unsigned count,
                                 ...)
{
   ir_variable **vars = new ir_variable *[count];
   va_list args;

/* Make a copy of the list of expected ir_variables.  The copied list can
    * be modified during the checking.
    */
   va_start(args, count);

for (unsigned i = 0; i < count; i++)
      vars[i] = va_arg(args, ir_variable *);

va_end(args);

struct hash_entry *entry;
   hash_table_foreach(ht, entry) {
      const ir_instruction *const ir = (ir_instruction *) entry->key;
      const ir_variable *const v = ir->as_variable();

if (v == NULL) {
         ADD_FAILURE() << "Invalid junk in hash table: ir_type = "
                       << ir->ir_type << ", address = "
                       << (void *) ir;
         continue;
      }

unsigned i;
      for (i = 0; i < count; i++) {
         if (vars[i] == NULL)
            continue;

if (vars[i] == v)
            break;
      }

if (i == count) {
            ADD_FAILURE() << "Invalid variable in hash table: \""
                          << v->name << "\"";
      } else {
         /* As each variable is encountered, remove it from the set.  Don't
          * bother compacting the set because we don't care about
          * performance here.
          */
         vars[i] = NULL;
      }
   }

/* Check that there's nothing left in the set. */
   for (unsigned i = 0; i < count; i++) {
      if (vars[i] != NULL) {
         ADD_FAILURE() << "Variable was not in the hash table: \""
                          << vars[i]->name << "\"";
      }
   }

delete [] vars;
}

TEST_F(array_refcount_test, ir_array_refcount_entry_initial_state_for_scalar)
{
   ir_variable *const var =
      new(mem_ctx) ir_variable(glsl_type::int_type, "a", ir_var_auto);