Ktheres a thing for writing to a span with formatting now
T"oopsie, fourth element is garbage"
Mit's just zero, so it doesn't matter for equality
MAsVector128 creates a Vector4 first, then unsafe casts it to Vector128
Mi didn't do it! complain at microsoft!
Ti mean, i'm pretty sure the runtime must ensure that Vector3->Vector128 maintain the fourth element as zero so meh
KWrites the CompositeFormat string to the character span, substituting the format item or items with the string representation of the corresponding arguments.
Moh!!!! tysm <3
Knw
Kits one of my fav net6 things
Knet8 adds a utf8 one for byte spans too but thats not what you want here probs
Kunless you implement utf8spanformattable
Mmaybe this optimization is generalizable?
Kah true
MT isn't unmanaged
Mthough i could make it so
Khmmm
Ki wasnt trying to edit that discord
Kwhatever
Mbut i feel like part of the point of generic math is to not restrict to unmanaged types
Kyeah hmm
Tmmm tasty GC holes
Tactually i'm just messing with you
Pit also will definitely not generate the instructions you want
Mi know, i'll have to think about this
Mis there a way to check if T is an unmanaged type that the JIT can eliminate
Tno i'm not, AsPointer on
this, ouchMit's a struct
Mit's not gonna get moved
Tbut it's location can be in a class
Mbut the operation is performed in a register
Thow so? it would try loading the field from the class
Kmy gut is to try and get a span to self and use vector<T> or span copy
Mi thought about that too
Kor span copy using vector<T> for optimization
Mbut that feels like it would also generate the wrong instructions
Pthe operation isn't in a register unless you're using the functions that are 1:1 mappings to native instructions and even then there's implicit enregistration if it's not already
Malso Unsafe.SizeOf should be fine here if T is guaranteed to be unmanaged by checking RuntimeHelpers.IsReferenceOrContainsReferences, right?
TUnsafe.SizeOf works on any T
Mfair
Tand the codegen for this in net7 is very poor
Mdo you guys have any better ideas, if this is possible at all?
Pjust specialize it
Por use BTEC SIMD
Paka
System.Numerics.VectorPbut it's effectively deprecated until
ISimdVector comes outPlike it works
Pbut noone uses it
Poh and you'd still need to specialise anyway by the looks of things
Pyeah just specialise it