spu: Fixes

[kd-11]

• Implement FM for interpreter fast and asmjit
• Fixes a bug in FMA/FMS/FNMS where cmpunord was used as an optimization but inadvertently broke some corner cases :p

[ghost]

Now Journey works on asmjit. Also need "Write Color Buffers" and "Strict Rendering Mode" or there will be a black screen.
Gameplay:

Gamepad required. SadFace.

[woj1993]

@kd-11 What is missing in FM that it is "only" partially implemented?

[kd-11]

@woj1993 https://gist.github.com/kd-11/ed8d4b82921c29ed13417945b6597168

[kd-11]

Actually I set the wrong value for FLT_MAX. Fixing it should significantly improve accuracy.

[SNK-Afridi]

Spider man Edge of time blus 30760 shows no more black screen when i punch venom.
but crashes with pink error. Saw performance improvement as well. LLVM,ASMJIT, liblv2 only. vulkan and opengl as well and strict mode on off both.
RPCS3.log.gz

F {SPU[0x2000004] Thread (GoliathInstCellSpursKernel4)} class std::runtime_error thrown: Branch-to-self (0x00eec)
(in file C:\rpcs3\rpcs3\Emu\Cell\SPUASMJITRecompiler.cpp:2297)
F {MFC Thread} MEM: Access violation reading location 0x0

hmm should i post anything else?

[kd-11]

Tweaked to handle all corner cases except for INF. SPUs just process INF like a general value which breaks FM with INF. Auto-test only fails INF case for now, but I think it should be good enough.
@SNK-Afridi Does it work without crashing without this PR? What happens when the same happens on master?

[SNK-Afridi]

this is the build i used to give you the log in my above comment.
tested this master build from rpcs3 download and it give same error but the screen is black, used the same settings as above.
i have been testing this paste 1 hour and found out that not attacking venom i did not get crash. but after two or three attacks again same error.
i used SPU interpreter fast which was too slow but moved paste that stage without error. Now in next stage i took some screen shot in same location using your build and master build..
kd-11 build

master build.

it is sad to say this. but i tested a july build and it gave me same error as well :(

i forgot to mention. after using interpreter fast to move paste venom stage. i again used ASMJIT. and then i took the screen shots above. i hope i am not confusing you :(

edit... is it okay if i post stuff here?