llvm-project

bbd6a2d8 - [RISCV] Convert implicit_def tuples to noreg in post-isel peephole (#91173)

[RISCV] Convert implicit_def tuples to noreg in post-isel peephole (#91173) If a segmented load has an undefined passthru then it will be selected as a reg_sequence with implicit_def operands, which currently slips through the implicit_def -> noreg peephole. This patch fixes this so we're able to infer if the passthru is undefined without the need for looking through vreg definitions with MachineRegisterInfo, which will help with moving RISCVInsertVSETVLI to LiveIntervals in #70549