[llvm-dev] There is an error “use of unknown builtin” (original) (raw)
沈天豪 via llvm-dev llvm-dev at lists.llvm.org
Wed Sep 12 06:36:45 PDT 2018
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Hello，everyone. I am very embarrassed to ask such a simple question. I want to add an intrinsics(named max_qb) in x86 backend. In include/llvm/IR/IntrinsicsX86.td, I add a intrinsics (GCCBuiltin). In clang( BuiltinsX86.def ), I add a BUILTIN. And in x86 backend , I change :
the X86InstrInfo.td to add def X86max_qb_flag ,
X86InstrArithmetic.td to add define of instruction , X86ISelLowering.cpp to add SDnode. It's succeed when LLVM compilates.But there is an error “use of unknown builtin '__builtin_x86_max_qb' ”，when I test the intrinsics. I do not know what I should do.I have been stranded here for 2 days. Grate for any suggestions. Thanks a lot. -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20180912/c24c5902/attachment.html>
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