[llvm-dev] shl

[Fabian Giesen via llvm-dev]

On 5/15/2019 1:03 PM, Josh Sharp via llvm-dev wrote:
> Hi,
> I got a question about the SDNode "shl"
> 
> def shl        : SDNode<"ISD::SHL"       , SDTIntShiftOp>;
> 
> Does it stand for "shift logical" and in what direction does it shift?
> How to shift in the other direction?

SHift Left.

The corresponding right shifts are SRA (Shift Right Arithmetic) and SRL 
(Shift Right Logical). The former shifts in copies of the sign bit at 
the top, the latter shifts in zeroes.

-Fabian