2 * Copyright © 2014 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 DEALINGS
24 * Jason Ekstrand (jason@jlekstrand.net)
30 * Handles management of the metadata.
34 nir_metadata_require(nir_function_impl
*impl
, nir_metadata required
, ...)
36 #define NEEDS_UPDATE(X) ((required & ~impl->valid_metadata) & (X))
38 if (NEEDS_UPDATE(nir_metadata_block_index
))
39 nir_index_blocks(impl
);
40 if (NEEDS_UPDATE(nir_metadata_dominance
))
41 nir_calc_dominance_impl(impl
);
42 if (NEEDS_UPDATE(nir_metadata_live_ssa_defs
))
43 nir_live_ssa_defs_impl(impl
);
44 if (NEEDS_UPDATE(nir_metadata_loop_analysis
)) {
46 va_start(ap
, required
);
47 nir_loop_analyze_impl(impl
, va_arg(ap
, nir_variable_mode
));
53 impl
->valid_metadata
|= required
;
57 nir_metadata_preserve(nir_function_impl
*impl
, nir_metadata preserved
)
59 impl
->valid_metadata
&= preserved
;
64 * Make sure passes properly invalidate metadata (part 1).
66 * Call this before running a pass to set a bogus metadata flag, which will
67 * only be preserved if the pass forgets to call nir_metadata_preserve().
70 nir_metadata_set_validation_flag(nir_shader
*shader
)
72 nir_foreach_function(function
, shader
) {
74 function
->impl
->valid_metadata
|= nir_metadata_not_properly_reset
;
80 * Make sure passes properly invalidate metadata (part 2).
82 * Call this after a pass makes progress to verify that the bogus metadata set by
83 * the earlier function was properly thrown away. Note that passes may not call
84 * nir_metadata_preserve() if they don't actually make any changes at all.
87 nir_metadata_check_validation_flag(nir_shader
*shader
)
89 nir_foreach_function(function
, shader
) {
91 assert(!(function
->impl
->valid_metadata
&
92 nir_metadata_not_properly_reset
));