EE JIT: Implement SDR/SDL, LDR/LDL instructions

[refractionpcsx2]

Description of Changes

Added SDR/SDL, LDR/LDL instructions, in all their evilness (most of the code is just reading/writing the value in memory)

Rationale behind Changes

Stops the EE JIT dropping down to the interpreter for these instructions, theoretically faster

Suggested Testing Steps

Play games, make sure no new bad graphics or crashes happen.

[F0bes]

Okay, I wrote a program that can be used to bench this PR
There are two different ones, one is quite unrealistic and just has a bunch of SDR and SDL instructions lined up (no-rec-flush) and the other does some stuff in-between the SDR and SDL instruction uses(rec-flush).

Here are my results on my i7-9750H running 64 bit linux and averaging it with my eyeballs

	Register Flushing	No Register Flushing
Master	205fps	100fps
PR	235fps	94fps

Now I ask of you to please not scream 30 FPS INCREASE, as this program is definitely a best case scenario, however, this pr is faster :)

Refer to the comment below for an updated benching.
sdl-sdr-benches.zip

[refractionpcsx2]

Yeah I imagine unless there's a game that really spams them, there is a negotiable change with this PR, but hey, at least it's not dropping back to the interpreter i guess xD

[refractionpcsx2]

Did some optimisation and got it to these results

32bit Flush:

Master: 130fps
Pr: 217fps

32bit No-Flush:

Master: 68fps
PR: 94fps

64bit Flush:

Master: 161fps
Pr: 244fps

64bit No-Flush:

Master: 88fps
PR: 106fps

The move in the middle that brings in dummyValue is super slow, if I remove that line, my FPS in Fobes' tests almost doubles, but I don't know why it's slow to begin with, there seems to be some contention with the read done before it. but MOVQ (64bit) was faster than MOVDQA (128bit), so that helps it suck less.

[RedDevilus]

Version Flex:

	32-bit flush	32-bit no-flush	64-bit flush	64-bit no-flush
Master VPS	130 VPS	68 VPS	161 VPS	88 VPS
PR VPS	217 VPS (+87)	94 VPS (+26)	244 VPS (+83)	106 VPS (+18)
PR performance uplift	66.9%	38.2%	51.6%	20.5%

[refractionpcsx2]

From this point on in the PR, LDL and LDR has also been added

[refractionpcsx2]

LDL/LDR only benchmarks. Remember this is BEST CASE SCENARIO with custom made ELF's

LDR/L Benches:

32Bit No Flush:

Master: 66fps
Pr: 120fps

32Bit with Flush:

Master: 169fps
PR: 304fps

[refractionpcsx2]

Combined LD/SD L/R test ELFs results:

LDR/L Benches:

32Bit No Flush:

Master: 48fps
Pr: 69fps

32Bit with Flush:

Master: 108fps
PR: 185fps

ldX-and-sdX-benches.zip

[RedDevilus]

SDL/SDR PAL

Version	32 Bit Flush	32 Bit No-Flush
Stable 1.6	Speed 115% / 57 VPS	Speed 220% / 110 VPS
Dev1.7-1745	Speed 120% / 60 VPS	Speed 230% / 115 VPS
Dev1.7-1762	Speed 200% / 100 VPS	Speed 460% / 230 VPS