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radv: use nir_opt_copy_prop_vars and nir_opt_dead_write_vars

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Totals from affected shaders:
SGPRS: 2856 -> 2856 (0.00 %)
VGPRS: 3236 -> 3248 (0.37 %)
Spilled SGPRs: 0 -> 0 (0.00 %)
Spilled VGPRs: 0 -> 0 (0.00 %)
Private memory VGPRs: 0 -> 0 (0.00 %)
Scratch size: 0 -> 0 (0.00 %) dwords per thread
Code Size: 236560 -> 233548 (-1.27 %) bytes
LDS: 0 -> 0 (0.00 %) blocks
Max Waves: 277 -> 283 (2.17 %)
Wait states: 0 -> 0 (0.00 %)

Even in the cases were we have increased VGPR use it appears
the NIR is improved significantly.

Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
This commit is contained in:
Timothy Arceri 2018-10-18 08:55:46 +11:00
parent 67a2c1493c
commit 9d5b106b2e
1 changed files with 4 additions and 0 deletions
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4
src/amd/vulkan/radv_shader.c
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@ -127,6 +127,10 @@ radv_optimize_nir(struct nir_shader *shader, bool optimize_conservatively)
NIR_PASS_V(shader, nir_lower_vars_to_ssa);
NIR_PASS_V(shader, nir_lower_pack);
NIR_PASS(progress, shader, nir_opt_copy_prop_vars);
NIR_PASS(progress, shader, nir_opt_dead_write_vars);
NIR_PASS_V(shader, nir_lower_alu_to_scalar);
NIR_PASS_V(shader, nir_lower_phis_to_scalar);