fhahn marked an inline comment as done. fhahn added inline comments.
================ Comment at: clang/docs/MatrixTypes.rst:27 +internal layout, overall size and alignment are implementation-defined. +A *matrix element type* must be a real type (as in C99 6.2.5p17) excluding +enumeration types or an implementation-defined half-precision floating point ---------------- SjoerdMeijer wrote: > fhahn wrote: > > SjoerdMeijer wrote: > > > above you're using *element type* and here *matrix element type*. Since > > > hopefully we're talking about the same things, "matrix *element type*" > > > would be more consistent. > > > > > > But this is just a nit, my main question is about the types: > > > why not e.g. define this to be the C11 types, that include _FloatN types, > > > so that we can include N=16? Or is this intentionally omitted? I haven't > > > even checked if this is supported in the architecture extension, but > > > might make sense? And also, an element type cannot be an integer type? > > > > > > > > > above you're using *element type* and here *matrix element type*. Since > > > hopefully we're talking about the same things, "matrix *element type*" > > > would be more consistent. > > > > Yes it is referring to the same thing. I had a look at most uses, and in > > most cases `element type` is used to refer to the element type of a given > > matrix type. In that context it seems a bit verbose to use `matrix element > > type`, although I am more than happy to change that if it helps with > > clarifying things. > > > > I intentionally used `matrix element type` in `Arithmetic Conversions`, > > because there it is standing on its own and refers exactly to the set of > > types defined as valid matrix element types here. > > > > > why not e.g. define this to be the C11 types, that include _FloatN types, > > > so that we can include N=16? Or is this intentionally omitted? I haven't > > > even checked if this is supported in the architecture extension, but > > > might make sense? > > > > I couldn't find any reference to _FloatN types in the C11 draft version I > > checked. Do you by any chance have a reference to the _FloatN types? > > > > > And also, an element type cannot be an integer type? > > > > The current definition should include it (real types include integer and > > real floating point types according to C99 6.2.5p17). I don't think there > > is any reason to exclude them I think. > >> why not e.g. define this to be the C11 types, that include _FloatN > >> types, so that we can include N=16? Or is this intentionally omitted? I > >> haven't even checked if this is supported in the architecture extension, > >> but might make sense? > >> > > I couldn't find any reference to _FloatN types in the C11 draft version I > > checked. Do you by any chance have a reference to the _FloatN types? > > Sorry, I was a bit imprecise here, it's an extension of C11: ISO/IEC TS > 18661-3:2015. > My thinking was it would be cool to support the "proper" half-precision type. > I thought about this, because of "or an implementation-defined > half-precision" mentioned just below here, of which probably __fp16 is an > example. If you refer to the C99 types, you probably don't even need to > mention this (although it won't do any harm)? > > >> And also, an element type cannot be an integer type? > > > > The current definition should include it (real types include integer and > > real floating point types according to C99 6.2.5p17). I don't think there > > is any reason to exclude them I think. > > Ok, cheers, wrote this from memory (forgot this), and didn't check the > standard. > Sorry, I was a bit imprecise here, it's an extension of C11: ISO/IEC TS > 18661-3:2015. > My thinking was it would be cool to support the "proper" half-precision type. > I thought about this, because of "or an implementation-defined > half-precision" mentioned just below here, of which probably __fp16 is an > example. If you refer to the C99 types, you probably don't even need to > mention this (although it won't do any harm)? I am not sure what the exact wording should be, but the intention is to include both __fp16 and _Float16. I was hoping that would be covered as is, but I would be happy to clarify (unfortunately it is not entirely clear to me how to best word this) Repository: rG LLVM Github Monorepo CHANGES SINCE LAST ACTION https://reviews.llvm.org/D76612/new/ https://reviews.llvm.org/D76612 _______________________________________________ cfe-commits mailing list cfe-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
