Displaying 1 result from an estimated 1 matches for "_rv32_andn".
2019 Aug 15
2
[RFC][RISCV] Selection of complex codegen patterns into RISCV bit manipulation instructions
Hi Roman,
> That depends.
> If there's LLVM intrinsic for it, then any normal optimization pass could do it.
> In cttz's case it's mainly done in LoopIdiom pass.
Oh yes. Thank you!
Unfortunately several of the instructions of the bit manipulation
extension don't seem to have an intrinsic already in LLVM.
That will require to add some passes to the middle end.
>