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Timothy Arceri authored
When I implemented opt_if_loop_last_continue() I had restricted this pass from moving other if-statements inside the branch opposite the continue. At the time it was causing extra regisiter pressure in some shaders, however that no longer seems to be an issue. Samuel Pitoiset noticed that making this pass more aggressive significantly improved the performance of Doom on RADV. Below are the statistics he gathered. 28717 shaders in 14931 tests Totals: SGPRS: 1267317 -> 1267549 (0.02 %) VGPRS: 896876 -> 895920 (-0.11 %) Spilled SGPRs: 24701 -> 26367 (6.74 %) Code Size: 48379452 -> 48507880 (0.27 %) bytes Max Waves: 241159 -> 241190 (0.01 %) Totals from affected shaders: SGPRS: 23584 -> 23816 (0.98 %) VGPRS: 25908 -> 24952 (-3.69 %) Spilled SGPRs: 503 -> 2169 (331.21 %) Code Size: 2471392 -> 2599820 (5.20 %) bytes Max Waves: 586 -> 617 (5.29 %) The codesize increases is related to Wolfenstein II. This gives +10% FPS with Doom on my Vega56. Rhys Perry also benchmarked Doom on his VEGA64: Before: 72.53 FPS After: 80.77 FPS
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