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nir/lower_shader_calls: remove CF before nir_opt_if

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Otherwise, opt_if_simplification() can attempt to insert an inot after a
jump.

Fixes RADV compilation of a Cyberpunk 2077 pipeline with
PIPELINE_CREATE_DISABLE_OPTIMIZATION_BIT.

Signed-off-by: Rhys Perry <pendingchaos02@gmail.com>
Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Cc: mesa-stable
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/27193>
(cherry picked from commit e465ac2561)
This commit is contained in:
Rhys Perry 2024-01-19 19:38:23 +00:00 • committed by Eric Engestrom
parent 1059613931
commit 73dcdc7a4e
2 changed files with 3 additions and 1 deletions
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2
.pick_status.json
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@ -274,7 +274,7 @@
"description": "nir/lower_shader_calls: remove CF before nir_opt_if",
"nominated": true,
"nomination_type": 0,
"resolution": 0,
"resolution": 1,
"main_sha": null,
"because_sha": null,
"notes": null

2
src/compiler/nir/nir_lower_shader_calls.c
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@ -2050,6 +2050,8 @@ nir_lower_shader_calls(nir_shader *shader,
for (unsigned i = 0; i < num_calls; i++) {
nir_instr *resume_instr = lower_resume(resume_shaders[i], i);
replace_resume_with_halt(resume_shaders[i], resume_instr);
/* Remove CF after halt before nir_opt_if(). */
nir_opt_dead_cf(resume_shaders[i]);
/* Remove the dummy blocks added by flatten_resume_if_ladder() */
nir_opt_if(resume_shaders[i], nir_opt_if_optimize_phi_true_false);
nir_opt_dce(resume_shaders[i]);