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Commit Graph
866 Commits
Author SHA1 Message Date
Alyssa Rosenzweig 2bcd285851 Merge pull request #3430 from Sonicadvance1/tsc_scale 
Implement small TSC scaling
 2024-02-21 13:16:27 -04:00
Ryan Houdek b902b8edab Implement small TSC scaling 
Games engines are expecting >1Ghz cycle counters. Scale them to work
around the issue.

Resolves the excessive busy waiting in Unreal Engine 5 games.
 2024-02-20 12:05:44 -08:00
Alyssa Rosenzweig 0503c89ff6 OpcodeDispatcher: use NZCV update helpers 
Signed-off-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
 2024-02-19 14:12:54 -04:00
Alyssa Rosenzweig 6dd410698a OpcodeDispatcher: add helpers for updating NZCV metadata 
to reduce error-prone copypaste

Signed-off-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
 2024-02-19 14:12:54 -04:00
Ryan Houdek 9cab746aa7 Merge pull request #3407 from neobrain/feature_libfwd_arguments_on_guest_stack 
Library Forwarding: Allocate packed arguments on the guest stack if needed
 2024-02-12 16:31:34 -08:00
Alyssa Rosenzweig 68232366e4 OpcodeDispatcher: don't mask add/sub sources 
not needed in the new approach

Signed-off-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
 2024-02-12 12:36:28 -04:00
Alyssa Rosenzweig d7ff1b78fb IR: handle 8/16-bit AddNZCV/SubNZCV 
we can do it more effectively than the current s/w lowering.

Signed-off-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
 2024-02-12 12:36:09 -04:00
Ryan Houdek df3d6938ae Merge pull request #3410 from alyssarosenzweig/opt/nzcv-pass-2 
Add NZCV+PF/AF optimization pass
 2024-02-10 05:03:12 -08:00
Ryan Houdek ba41da7da0 Merge pull request #3414 from Sonicadvance1/fix_one_mutex_hang 
Fixes one mutex hang
 2024-02-09 05:54:40 -08:00
Ryan Houdek 2480bab409 Fixes one mutex hang 
When code invalidation is happening we currently have the issue that a
thread can acquire the code invalidation mutex in the middle of
invalidation. This is due to us acquiring and releasing the mutex
between each thread's code invalidation.

We need to hold the mutex for the entire duration for all thread's code
invalidation.
This fixes a rare hang on proton startup and resolves a consistent hang
on Proton application shutdown.

This now puts us on par with FEX-2312.1 with hanging.

This does not fix a relatively rare hang on fork (which also existed with FEX-2312.1).

This also does not fix the issue that the intersection of our mutexes
between frontend and backend are very convoluted. In part of the work
that is going to fix the rare fork mutex hang will change more of this.
 2024-02-08 18:18:00 -08:00
Alyssa Rosenzweig ad7202e7d7 OpcodeDispatcher: optimize test -1 
Signed-off-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
 2024-02-08 14:10:13 -04:00
Alyssa Rosenzweig 175a57dd27 OpcodeDispatcher: emit AndWithFlags directly for primary alu 
Signed-off-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
 2024-02-06 14:22:28 -04:00
Alyssa Rosenzweig e2ce60148c OpcodeDispatcher: emit AndWithFlags directly for 2ndary alu 
rely on opt pass to drop the flags.

Signed-off-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
 2024-02-06 14:22:28 -04:00
Alyssa Rosenzweig 99660129f3 IR: implement AndWithFlags for 8/16-bit 
easier to deal with in the JIT

Signed-off-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
 2024-02-06 14:22:28 -04:00
Alyssa Rosenzweig 308d9a751c RedundantFlagCalculationElimination: optimize rmif 
Signed-off-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
 2024-02-06 13:06:26 -04:00
Alyssa Rosenzweig 4bd28c0ed8 RedundantFlagCalculationElimination: optimize condaddnzcv 
Signed-off-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
 2024-02-06 13:06:26 -04:00
Alyssa Rosenzweig 8397f3ac99 RedundantFlagCalculationElimination: refine AXFLAG 
Signed-off-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
 2024-02-06 13:06:26 -04:00
Alyssa Rosenzweig 0452bc7212 RedundantFlagCalculationElimination: optimize condjump 
Signed-off-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
 2024-02-06 13:06:26 -04:00
Alyssa Rosenzweig 3d7ed89ffb RedundantFlagCalculationElimination: optimize NZCVSelect 
Signed-off-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
 2024-02-06 13:06:25 -04:00
Alyssa Rosenzweig 23ab0a978e RedundantFlagCalculationElimination: also handle InvalidateFlags 
Signed-off-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
 2024-02-06 13:06:25 -04:00
Alyssa Rosenzweig 7f47a9ef0e IR: add local dead flag elimination pass 
RCLSE ignores NZCV and doesn't optimize stores which doesn't help us with PF/AF
either. So, we add a new pass for dead flag elimination (cannibalizing the old
and broken dead flag elimination pass). This is a simple local optimizer that
walks each block backwards, converging in linear time & constant space in a
single iteration.

Right now, it doesn't do a ton (other than a nice reduction in silliness in
the hot Sonic block), but it provides the framework to fuse comparisons.

Signed-off-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
 2024-02-06 13:06:25 -04:00
Alyssa Rosenzweig 4331753ca0 Merge pull request #3408 from alyssarosenzweig/opt/tst 
Optimize TST
 2024-02-06 11:28:02 -04:00
Paulo Matos fa8bcfd67a Clean up access to possible nullptr 
Patch suggested by @Sonicadvance1
 2024-02-06 12:31:38 +00:00
Alyssa Rosenzweig 235f32ce8c Merge pull request #3401 from Sonicadvance1/runtime_preserve_all 
HostFeatures: Supports runtime disabling of preserve_all
 2024-02-05 15:34:46 -04:00
Alyssa Rosenzweig 2e0cb2fbd4 OpcodeDispatcher: optimize TST 
it's just an AndWithFlags setting the PF.

Signed-off-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
 2024-02-05 15:32:21 -04:00
Alyssa Rosenzweig 4790a7ba79 IR: add AndWithFlags 
Signed-off-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
 2024-02-05 15:32:21 -04:00
Tony Wasserka df3e51fc8c Library Forwarding: Allocate packed arguments on the guest stack if needed 
This is required for host-side calls to guest functions on 32-bit guests.
Since the host stack is allocated before FEX blocks memory inaccessible to
the guest, the guest would otherwise fail to read the packed argument data.
 2024-02-05 18:10:34 +01:00
Ryan Houdek c437129ed8 Revert "Revert "FEXLoader: Moves thread management to the frontend"" 
This reverts commit 5358af7794.
 2024-02-03 00:57:36 -08:00
Alyssa Rosenzweig 8d3f0b6f02 OpcodeDispatcher: reassociate and sink W in sha1 
We only need each part of W extracted in the corresponding round, so sink the
extract into the round to reduce pressure.

Further, W and E are added and then never used again. So, by reassociating we
can do the add upfront, killing W and E at the start and further reducing
pressure.

Eliminates spilling in sha1rnds4.

Signed-off-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
 2024-02-02 13:03:07 -04:00
Alyssa Rosenzweig 60f7b9bcc4 OpcodeDispatcher: optimze sha1's 2/3 expr 
Signed-off-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
 2024-02-02 13:03:07 -04:00
Alyssa Rosenzweig a487557173 OpcodeDispatcher: extract BitwiseAtLeastTwo 
Signed-off-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
 2024-02-02 13:03:07 -04:00
Alyssa Rosenzweig 394b4888bb OpcodeDispatcher: reassociate and remat C0, G0 
costs 2 moves and eliminates the rest of our spilling

Signed-off-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
 2024-02-02 13:03:07 -04:00
Alyssa Rosenzweig 142cbdd852 OpcodeDispatcher: expand, reassociate, and interleave sha256 calc 
Signed-off-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
 2024-02-02 13:03:07 -04:00
Alyssa Rosenzweig 2f9102f78d OpcodeDispatcher: expand & interleave sha256 calc 
Signed-off-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
 2024-02-02 13:03:07 -04:00
Alyssa Rosenzweig c9824d04cb OpcodeDispatcher: sink sha256 extracts 
Signed-off-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
 2024-02-02 13:03:07 -04:00
Alyssa Rosenzweig 9c2a569539 OpcodeDispatcher: reexpress Major in sha256 
Signed-off-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
 2024-02-02 13:03:07 -04:00
Alyssa Rosenzweig 515aa4ce3e OpcodeDispatcher: fuse eor+ror in sha256 
This reduces instructions a ton.

Signed-off-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
 2024-02-02 13:03:07 -04:00
Alyssa Rosenzweig f616beb992 OpcodeDispatcher: CSE sha 
Signed-off-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
 2024-02-02 13:03:07 -04:00
Alyssa Rosenzweig 0dcf1e12b8 OpcodeDispatcher: copyprop sha logic 
prepare for clever

Signed-off-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
 2024-02-02 13:03:07 -04:00
Alyssa Rosenzweig 2cbf544ef5 OpcodeDispatcher: expand sha logic 
no functional change, just preparing for cleverness.

Signed-off-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
 2024-02-02 13:03:07 -04:00
Ryan Houdek 0eed73beeb HostFeatures: Supports runtime disabling of preserve_all 
This is used for instcountci to ensure instruction counts don't change
when a compiler supports this feature or not. Always runtime disable
when running in instcountci.

CMake option from #3394 can still be useful so leaving that in place.
 2024-02-02 08:59:04 -08:00
Mai 6993f4fd8d Merge pull request #3400 from Sonicadvance1/revert_runtime_longmode_switch 
Revert #3303
 2024-02-02 11:53:44 -05:00
Paulo Matos 4623544f69 Improve XCHG operations 
Marking loads as allowing upper garbage simplifies some operations.
Update InstCountCI as well.
 2024-02-02 08:16:13 +00:00
Ryan Houdek ccf1402fe6 Revert "FEXCore: Accurately store segment descriptors" 
This reverts commit 8648fb1485.
 2024-02-01 18:14:30 -08:00
Ryan Houdek da0e1b515a Revert "OpcodeDispatcher: Initial support for runtime long-mode switch" 
This reverts commit 9e5d7aa5fe.
 2024-02-01 18:14:24 -08:00
Ryan Houdek cec1814a09 Merge pull request #3384 from pmatos/CDQOp-Opt 
Optimize CDQOp
 2024-01-31 17:51:23 -08:00
Mai 4d49ac7c3d Merge pull request #3387 from alyssarosenzweig/opt/rotates 
Optimize rotates
 2024-01-31 18:20:40 -05:00
Alyssa Rosenzweig 6d13d9fb56 Merge pull request #3395 from pmatos/StaticAnalysis 
Code cleanup - mainly dead store removal; NFC
 2024-01-31 17:24:48 -04:00
Mai ae7dc250db Merge pull request #3386 from alyssarosenzweig/opt/shift 
Optimize shifts a bit
 2024-01-31 14:11:58 -05:00
Paulo Matos e4560ed0c8 Code cleanup - mainly dead store removal; NFC 
scan-build found a few dead stores that can be easily cleaned-up
 2024-01-31 08:35:55 +00:00