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intel/compiler: Convert to LCSSA and use divergence analysis.

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We'll use this more shortly.  For now, enable it to separately in case
anything bisects to this.

Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Caio Oliveira <caio.oliveira@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/15484>
This commit is contained in:
Kenneth Graunke
2022-03-15 16:25:55 -07:00
committed by Marge Bot
parent b3942beecf
commit 49ef23f4a6
1 changed files with 6 additions and 0 deletions
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6
src/intel/compiler/brw_nir.c
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@@ -1213,6 +1213,12 @@ brw_postprocess_nir(nir_shader *nir, const struct brw_compiler *compiler,
OPT(nir_opt_move, nir_move_comparisons);
OPT(nir_opt_dead_cf);
NIR_PASS_V(nir, nir_convert_to_lcssa, true, true);
NIR_PASS_V(nir, nir_divergence_analysis);
/* Clean up LCSSA phis */
OPT(nir_opt_remove_phis);
OPT(nir_lower_bool_to_int32);
OPT(nir_copy_prop);
OPT(nir_opt_dce);