2 * Copyright © 2010 Intel Corporation
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
11 * The above copyright notice and this permission notice (including the next
12 * paragraph) shall be included in all copies or substantial portions of the
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
21 * DEALINGS IN THE SOFTWARE.
25 * \file ir_validate.cpp
27 * Attempts to verify that various invariants of the IR tree are true.
29 * In particular, at the moment it makes sure that no single
30 * ir_instruction node except for ir_variable appears multiple times
31 * in the ir tree. ir_variable does appear multiple times: Once as a
32 * declaration in an exec_list, and multiple times as the endpoint of
33 * a dereference chain.
38 #include "ir_hierarchical_visitor.h"
39 #include "hash_table.h"
41 static unsigned int hash_func(const void *key
)
43 return (unsigned int)(uintptr_t)key
;
46 static int hash_compare_func(const void *key1
, const void *key2
)
48 return key1
== key2
? 0 : 1;
52 class ir_validate
: public ir_hierarchical_visitor
{
56 this->ht
= hash_table_ctor(0, hash_func
, hash_compare_func
);
58 this->callback
= ir_validate::validate_ir
;
64 hash_table_dtor(this->ht
);
67 virtual ir_visitor_status
visit(ir_variable
*v
);
69 static void validate_ir(ir_instruction
*ir
, void *data
);
71 struct hash_table
*ht
;
75 ir_validate::visit(ir_variable
*ir
)
77 /* An ir_variable is the one thing that can (and will) appear multiple times
81 return visit_continue
;
85 ir_validate::validate_ir(ir_instruction
*ir
, void *data
)
87 struct hash_table
*ht
= (struct hash_table
*) data
;
89 if (hash_table_find(ht
, ir
)) {
90 printf("Instruction node present twice in ir tree:\n");
95 hash_table_insert(ht
, ir
, ir
);
99 validate_ir_tree(exec_list
*instructions
)