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* Copyright © 2014 Intel Corporation
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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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* 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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* 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
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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* Jason Ekstrand (jason@jlekstrand.net)
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* Handles management of the metadata.
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nir_metadata_require(nir_function_impl *impl, nir_metadata required, ...)
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#define NEEDS_UPDATE(X) ((required & ~impl->valid_metadata) & (X))
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if (NEEDS_UPDATE(nir_metadata_block_index))
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nir_index_blocks(impl);
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if (NEEDS_UPDATE(nir_metadata_instr_index))
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nir_index_instrs(impl);
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if (NEEDS_UPDATE(nir_metadata_dominance))
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nir_calc_dominance_impl(impl);
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if (NEEDS_UPDATE(nir_metadata_live_ssa_defs))
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nir_live_ssa_defs_impl(impl);
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if (NEEDS_UPDATE(nir_metadata_loop_analysis)) {
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va_start(ap, required);
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nir_loop_analyze_impl(impl, va_arg(ap, nir_variable_mode));
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impl->valid_metadata |= required;
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nir_metadata_preserve(nir_function_impl *impl, nir_metadata preserved)
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impl->valid_metadata &= preserved;
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nir_shader_preserve_all_metadata(nir_shader *shader)
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nir_foreach_function(function, shader) {
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nir_metadata_preserve(function->impl, nir_metadata_all);
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* Make sure passes properly invalidate metadata (part 1).
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* Call this before running a pass to set a bogus metadata flag, which will
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* only be preserved if the pass forgets to call nir_metadata_preserve().
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nir_metadata_set_validation_flag(nir_shader *shader)
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nir_foreach_function(function, shader) {
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function->impl->valid_metadata |= nir_metadata_not_properly_reset;
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* Make sure passes properly invalidate metadata (part 2).
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* Call this after a pass makes progress to verify that the bogus metadata set by
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* the earlier function was properly thrown away. Note that passes may not call
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* nir_metadata_preserve() if they don't actually make any changes at all.
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nir_metadata_check_validation_flag(nir_shader *shader)
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nir_foreach_function(function, shader) {
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if (function->impl) {
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assert(!(function->impl->valid_metadata &
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nir_metadata_not_properly_reset));