Alyssa Rosenzweig 7f6491b76d nir: Combine if_uses with instruction uses ... Every nir_ssa_def is part of a chain of uses, implemented with doubly linked lists. That means each requires 2 * 64-bit = 16 bytes per def, which is memory intensive. Together they require 32 bytes per def. Not cool. To cut that memory use in half, we can combine the two linked lists into a single use list that contains both regular instruction uses and if-uses. To do this, we augment the nir_src with a boolean "is_if", and reimplement the abstract if-uses operations on top of that list. That boolean should fit into the padding already in nir_src so should not actually affect memory use, and in the future we sneak it into the bottom bit of a pointer. However, this creates a new inefficiency: now iterating over regular uses separate from if-uses is (nominally) more expensive. It turns out virtually every caller of nir_foreach_if_use(_safe) also calls nir_foreach_use(_safe) immediately before, so we rewrite most of the callers to instead call a new single `nir_foreach_use_including_if(_safe)` which predicates the logic based on `src->is_if`. This should mitigate the performance difference. There's a bit of churn, but this is largely a mechanical set of changes. Signed-off-by: Alyssa Rosenzweig <alyssa@collabora.com> Reviewed-by: Faith Ekstrand <faith.ekstrand@collabora.com> Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/22343>		2023-04-07 23:48:03 +00:00
..
algebraic_parser_test.py
algebraic_tests.cpp
builder_tests.cpp
comparison_pre_tests.cpp
control_flow_tests.cpp	nir/tests: Don't unconditionally log shaders from this one CF test	2023-02-17 22:12:05 +00:00
core_tests.cpp
dce_tests.cpp
load_store_vectorizer_tests.cpp	nir: Add alignment to load_push_constant	2023-02-11 06:12:23 +00:00
loop_analyze_tests.cpp	nir/tests: Port almost all loop_analyze tests to new macro-based infastructure	2023-04-06 23:50:27 +00:00
loop_unroll_tests.cpp	nir/loop_analyze: Determine iteration counts for more kinds of loops	2023-04-06 23:50:27 +00:00
lower_alu_width_tests.cpp	nir: add nir_lower_alu_width_test.fdot_order	2023-03-08 14:38:26 +00:00
lower_returns_tests.cpp
mod_analysis_tests.cpp	nir: add nir_mod_analysis & its tests	2023-01-31 13:50:08 +00:00
negative_equal_tests.cpp
opt_if_tests.cpp	nir: add a nir_opt_if_options enum	2022-08-10 12:55:39 +00:00
opt_shrink_vectors_tests.cpp	nir: shrink phi nodes in nir_opt_shrink_vectors	2023-02-10 09:06:25 +00:00
serialize_tests.cpp	nir: Fixes [-Wdeprecated-declarations] in serialize_tests.cpp	2022-08-23 15:19:16 +00:00
ssa_def_bits_used_tests.cpp	nir: Combine if_uses with instruction uses	2023-04-07 23:48:03 +00:00
vars_tests.cpp	nir: Fix unused-variable compile warnings	2022-06-15 19:43:27 +00:00