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[dynarmic] use LinkBlockFast for branches which are guarnateed to be unconditional (or conditionally unconditional) (#4177)

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CBZ is basically
```c
if (thing) {
  jump(A);
} else  {
 jump(B);
}
```
those jumps are locally unconditional so we can add the LinkBlockFast
without much repercussions for a small win in JIT opts

Signed-off-by: lizzie <lizzie@eden-emu.dev>

Reviewed-on: https://git.eden-emu.dev/eden-emu/eden/pulls/4177
Reviewed-by: MaranBr <maranbr@eden-emu.dev>
Reviewed-by: CamilleLaVey <camillelavey99@gmail.com>
This commit is contained in:
lizzie
2026-07-07 19:53:13 +02:00
committed by crueter
parent 6119e8fad2
commit f22fd1714b
6 changed files with 54 additions and 50 deletions
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docs/dynarmic/Design.md
+3 -2
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@@ -311,8 +311,9 @@ dispatcher, which will return control to the host.
SetTerm(IR::Term::LinkBlockFast{next})
```
This terminal instruction jumps to the basic block described by `next` unconditionally.
This promises guarantees that must be held at runtime - i.e that the program wont hang,
This terminal instruction jumps to the basic block described by `next` unconditionally. This promises guarantees that must be held at runtime - i.e that the program wont hang,
This is a valid expression if contained within another block (say a `Terminal::If`) and the semantics allow it to be so.
### Terminal: PopRSBHint