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SPU LLVM: Optimize spu_idisable #14598

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merged 1 commit into from
Sep 1, 2023
Merged

SPU LLVM: Optimize spu_idisable #14598

merged 1 commit into from
Sep 1, 2023

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elad335
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@elad335 elad335 commented Sep 1, 2023

Do not break blocks on interrupt-disabling branch-to-next. Maybe improves performance in TLoU and some other Sony's exclusives.

Example:
image

@Ordinary205
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Improves performance on RDR, but sadly Demon's Souls got regressed.

Master:
RDR (27.5/28.8/29.4 FPS)

Screenshot

RDR Test 1 (2)

Demon's Souls (70/75.3/76.8 FPS)
Screenshot

Demons Souls FPS Test 1 (2)

PR:
RDR (28.4/29.3/30.2 FPS)

Screenshot

RDR Test 2 (2)

Demon's Souls (68/73.5/76.7 FPS)
Screenshot

Demons Souls FPS Test 2 (2)

@elad335
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elad335 commented Sep 1, 2023

It's a bit odd to see performance regressions here, and IIRC demon soul's does not use SPU interrupts. Can you retest just in case?

@elad335 elad335 merged commit f9f2657 into RPCS3:master Sep 1, 2023
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@elad335 elad335 added CPU Optimization Optimizes existing code LLVM Related to LLVM instruction decoders labels Sep 1, 2023
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2 participants