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brw/nir: Lower fsign again after last call to brw_nir_optimize
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No shader-db or fossil-db changes on any Intel platform.

Fixes: 13332c23 ("intel/brw: Unconditionally run optimizations after nir_opt_uniform_subgroup")
Closes: #12888
Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/34251>
This commit is contained in:
Ian Romanick 2025-03-31 11:15:55 -07:00 • committed by Marge Bot
parent ca95cb8178
commit e210b79ce3
1 changed files with 7 additions and 0 deletions
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7
src/intel/compiler/brw_nir.c
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@ -1954,6 +1954,13 @@ brw_postprocess_nir(nir_shader *nir, const struct brw_compiler *compiler,
OPT(nir_lower_subgroups, &subgroups_options);
}
/* Run fsign lowering again after the last time brw_nir_optimize is called.
* As is the case with conversion lowering (below), brw_nir_optimize can
* create additional fsign instructions.
*/
if (OPT(brw_nir_lower_fsign))
OPT(nir_opt_dce);
/* Run intel_nir_lower_conversions only after the last time
* brw_nir_optimize is called. Various optimizations invoked there can
* rematerialize the conversions that the lowering pass eliminates.