search for: maskedgathersdnode

...(lib/Target/X86/X86InstrAVX512.td), ‘GatherNode’ is a template argument, not a definition. It allows a PatFrag be passed into the avx512_gather multiclass definition. Working backwards from here, the actual PatFrags passed into this are things like ‘mgatherv4i32’. These are patterns that match a MaskedGatherSDNode for a particular data type. MaskedGatherSDNode is the generic SD node that represents a predicated gather, which in turn was generated from Intrinsic::masked_gather in the IR (in SelectionDAGBuilder::visitMaskedGather) If your MIPS instruction has a predicate, you will need to create MIPS tablege...

Hello. Will, thanks a lot for pointing me to the MaskedGatherSDNode and mgatherv4i32. I have to say that the definition of the "multiclass avx512_gather" from lib/Target/X86/X86InstrAVX512.td is difficult to follow and I prefer not to use it. I currently have some serious problems with TableGen - it gives an assertion failure: "llvm/utils/Ta...

Hello. I read on page 4 of http://www.cs.fsu.edu/~whalley/cda5155/chap4.pdf that gather and scatter operations exist for Mips, named LVI and SVI, respectively. Did anyone think of implementing in the LLVM Mips back end (part of the MSA vector instructions) gather and scatter operations? If so, can you share with me the TableGen spec? (I tried to start from LD_DESC_BASE, but it

...that I also gave in [Target]ISelLowering.cpp a call to setOperationAction(ISD::MGATHER, aType, Legal), which should have fixed this problem, but it doesn't. Best regards, Alex On 12/11/2016 5:31 AM, Alex Susu wrote: > Hello. > Will, thanks a lot for pointing me to the MaskedGatherSDNode and mgatherv4i32. I have > to say that the definition of the "multiclass avx512_gather" from > lib/Target/X86/X86InstrAVX512.td is difficult to follow and I prefer not to use it. > > I currently have some serious problems with TableGen - it gives an assertion failure: >...

...g.cpp a call to setOperationAction(ISD::MGATHER, aType, Legal), which > should have fixed this problem, but it doesn't. > > Best regards, > Alex > > > > On 12/11/2016 5:31 AM, Alex Susu wrote: >> Hello. >> Will, thanks a lot for pointing me to the MaskedGatherSDNode and mgatherv4i32. I have >> to say that the definition of the "multiclass avx512_gather" from >> lib/Target/X86/X86InstrAVX512.td is difficult to follow and I prefer not to use it. >> >> I currently have some serious problems with TableGen - it gives an asserti...