llvm-project

10c38943 - [RISCV] Refactor the tablegen classes for P-ext shift instructions. NFC (#150175)

[RISCV] Refactor the tablegen classes for P-ext shift instructions. NFC (#150175) -Rename based on element size suffix rather than immediate size. -Use _ri suffix like we do for shifts in the base ISA. -Push some common code to the base class. -Use shamt for the field name to enable more sharing. -Add funct3 as a parameter which we'll need for right shifts.