search for: vlmul

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2019 Feb 05
4
[RFC] Vector Predication
On 2/5/19 1:27 AM, Philip Reames via llvm-dev wrote: > > On 1/31/19 4:57 PM, Bruce Hoult wrote: >> On Thu, Jan 31, 2019 at 4:05 PM Philip Reames via llvm-dev >> <llvm-dev at lists.llvm.org> wrote: >>> Do such architectures frequently have arithmetic operations on the >>> mask registers?  (i.e. can I reasonable compute a conservative >>> length
2019 Feb 05
3
[RFC] Vector Predication
...d by the VSETVL[I] instruction which has > two arguments: 1) the requested AVL, and 2) the vtype (vector type). > > - The vtype is an integer with several small fields, of which two are > currently defined (the other bits must be zero). The fields are the > Standard Element Width and VLMul. SEW can be any power of 2 from 8 > bits up to some implementation-defined maximum (1024 bits absolute > maximum). VLMul says that you don't actually need 32 distinct vector > variables in your current loop/function and you're willing to trade > number of registers for a larger...
2019 Mar 18
6
Scalable Vector Types in IR - Next Steps?
On Fri, Mar 15, 2019 at 1:55 PM Chandler Carruth via llvm-dev <llvm-dev at lists.llvm.org> wrote: > > On Fri, Mar 15, 2019 at 11:22 AM Finkel, Hal J. via llvm-dev <llvm-dev at lists.llvm.org> wrote: >> >> On 3/15/19 10:58 AM, David Greene wrote: >> > Renato Golin <rengolin at gmail.com> writes: >> > >> >> On Fri, 15 Mar 2019 at