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I want to write a simple backend-specific instrinsic that will just call an instruction. How should I do that? -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20180924/7faeeb3d/attachment.html>

...x_qb, "V2iV2iV2i", "ncV:64:", "") //I don't know the meaning of these parameters, just write according to the add function. In src/tools/clang/lib/CodeGen/CGBuiltin.cpp. in function EmitX86BuiltinExpr case X86::BI__builtin_x86_max_qb:{ return Builder.CreateCall(CGM.getIntrinsic(Intrinsic::x86_max_qb)); } Then I do a simple test，just like this： #include <stdlib.h> #include <stdio.h> int main() { int a, b, c; a=1;b=2; c = int_x86_max_qb(a, b); } When I use clang to compile，there is a warning:implicit declaration of function 'int_x86_max_qb' is invalid i...

..."vv**i", "r") diff --git a/lib/CodeGen/CGBuiltin.cpp b/lib/CodeGen/CGBuiltin.cpp index d187678..f66f506 100644 --- a/lib/CodeGen/CGBuiltin.cpp +++ b/lib/CodeGen/CGBuiltin.cpp @@ -736,6 +736,11 @@ RValue CodeGenFunction::EmitBuiltinExpr(const FunctionDecl *FD, Value *F = CGM.getIntrinsic(Intrinsic::frameaddress); return RValue::get(Builder.CreateCall(F, Depth)); } + case Builtin::BI__builtin_stack_pointer: { + Value *StackAddr = + Builder.CreateCall(CGM.getIntrinsic(Intrinsic::stacksave)); + return RValue::get(StackAddr); + } case Builtin::BI__builtin_extrac...

Hi David, The error shows that the clang source code uses this intrinsic as well, but in the old form. You need to modify the clang source code (where this intrinsic is used) to consider the overloaded operands. The assert would show the trace where clang uses this intrinsic. Hope this helps, Anna > On Jul 26, 2016, at 3:21 PM, David Noursi via llvm-dev <llvm-dev at lists.llvm.org>

Hello All, I have been modifying LLVM a project of mine, and have encountered issues with overloading an intrinsic function. I have defined two types, abit (which is mapped, in Intrinsics.td, to i128) and qbit (accordingly mapped to i16). I would like my intrinsic function, CNOT(x,y), to accept either an abit or a qbit for each argument, so I overload with iAny and llvm_anyint_ty, as seemed to