[all-commits] [llvm/llvm-project] 3494c5: [RISCV] postpone removal in initundef pass (#71661)

[Piyou Chen via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 3494c555c93c5f5cf5c36a84a819b80a4d922a82
      https://github.com/llvm/llvm-project/commit/3494c555c93c5f5cf5c36a84a819b80a4d922a82
  Author: Piyou Chen <piyou.chen at sifive.com>
  Date:   2023-11-20 (Mon, 20 Nov 2023)

  Changed paths:
    M llvm/lib/Target/RISCV/RISCVRVVInitUndef.cpp
    M llvm/test/CodeGen/RISCV/regalloc-last-chance-recoloring-failure.ll
    A llvm/test/CodeGen/RISCV/rvv/handle-noreg-with-implicit-def.mir

  Log Message:
  -----------
  [RISCV] postpone removal in initundef pass (#71661)

InitUndef pass need replace the implicit def with Undef pseudo, but
current remove method will make noreg2implicit borken.

This patch postpone the removal until all basicblock be processed.