llvm-project

22c5c258 - [RISCV] Reorder the operands for RISCVISD::PPAIRE_DB. NFC (#180111)

[RISCV] Reorder the operands for RISCVISD::PPAIRE_DB. NFC (#180111) Order the operands so the the low and high part of the rs1 regpair are first, followed by the low and high part of the rs2 regpair. Also change the type to use v4i8 for the result so that it's only shuffling elements not combining elements into a larger elment. I'm planning to add ADDD and SUBD opcodes that will be defined with the same operand order allowing RISCVISelDAGToDAG.cpp code to be shared.