steam-frame/FEX-Emu--FEX
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5 Commits
Author SHA1 Message Date
Ryan Houdek b5cc9a12f2 FEXCore: Removes x86 JIT. 
This is blocking performance improvements. This backend is almost
unilaterally unused except for when I'm testing if games run on Radeon
video drivers.

Hopefully AmpereOne and Orin/Grace can fulfill this role when they
launch next year.
 2023-09-21 18:30:02 -07:00
Ryan Houdek e4613477b1 FEXCore/Interface/Core: Adds SPDX identifier 2023-09-19 17:33:15 -07:00
Ryan Houdek 40a4eb90af FEXCore: Disable Enhanced REP MOVSB if TSO is enabled 
Hades and the vcruntime hits this very hard in memmove.

`86.56%  [JIT] tid 458574        [.] JIT_0x18000c375_0x7fffc94790c8`

```asm
   0x00007fffc94790f8:  ldaprb  w3, [x2]
   0x00007fffc94790fc:  stlrb   w3, [x1]
   0x00007fffc9479100:  add     x1, x1, #0x1
   0x00007fffc9479104:  add     x2, x2, #0x1
   0x00007fffc9479108:  sub     x0, x0, #0x1
   0x00007fffc947910c:  cbnz    x0, 0x7fffc94790f8
```

This performance is terrible because Cortex's LRCPC performance is bottom-tier.
Work around the performance issue by forcing things to do larger moves with vector moves instead.
 2023-09-14 17:23:02 -07:00
Ryan Houdek 2f77982b54 CPUID: Enabled Enhanced REP MOVSB/STOSB 
Missed with #2490.
This changes behaviour of glibc's memmove slightly, seems to recover a
bit of performance on Half-Life 2's title screen.
 2023-09-10 20:49:08 -07:00
Alyssa Rosenzweig af21b8f3c7 Move External/FEXCore/ to FEXCore/ 
It is not an external component, and it makes paths needlessly long.
Ryan seemed amenable to this when we discussed on IRC earlier.

Signed-off-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
 2023-08-17 16:32:16 -04:00