llvm-project

91c52b96 - [DAG] Pull out repeated SDLoc() from SHL/SRL/SRA combines. NFC.

[DAG] Pull out repeated SDLoc() from SHL/SRL/SRA combines. NFC. We were always calling SDLoc(N) at the top of each visitSHL/SRL/SRA for the FoldConstantArithmetic call, so just reuse this as much as possible.