[llvm-dev] Issues porting intrinsics to LLVM 10 (original) (raw)

David Jones via llvm-dev llvm-dev at lists.llvm.org
Wed May 6 11:08:17 PDT 2020

I am maintaining proprietary extensions to the RISCV backend for our custom application.

I have defined intrinsics for many of the custom instructions. Against LLVM 7 this was working well.

When I try to merge my changes into LLVM 10, I get:

/home/dej/work/llvm_git/llvm-project/llvm/build/lib/Target/RISCV/RISCVGenGlobalISel.inc:11582:60: error: ‘idaho_mt_begin’ is not a member of ‘llvm::Intrinsic’ GIM_CheckIntrinsicID, /MI/0, /Op/0, Intrinsic::idaho_mt_begin,

This intrinsic is defined pretty simply:

let TargetPrefix = "idaho" in { def int_idaho_mt_begin : Intrinsic<[], [llvm_ptr_ty,llvm_i64_ty], []>; }

With LLVM 7, I notice that build/include/llvm/IntrinsicEnums.inc contains an entry for each intrinsic in the system. This is no longer the case for LLVM 10: there are only 277 definitions in the file. It seems that LLVM 10 imposes some filter condition where it deems inclusion in the IntrinsicEnums.inc unnecessary.

The other thing I notice: GlobalISel was not built (by default) in LLVM 7, but it is for LLVM 10. This is the entity referencing the enums.

I tried renaming my intrinsics to replace "idaho" with "riscv" speculating that this was the filtering condition, but that did not make any difference.

What has changed? -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20200506/9fcfbbcc/attachment.html>

More information about the llvm-dev mailing list