[all-commits] [llvm/llvm-project] e09828: [RISCV] Don't getDebugLoc for the end node of MBB ...

[luxufan via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: e098281c278cd1d840d6ee28d63a7d9671abbe4b
      https://github.com/llvm/llvm-project/commit/e098281c278cd1d840d6ee28d63a7d9671abbe4b
  Author: luxufan <luxufan at iscas.ac.cn>
  Date:   2022-04-30 (Sat, 30 Apr 2022)

  Changed paths:
    M llvm/lib/Target/RISCV/RISCVFrameLowering.cpp
    A llvm/test/CodeGen/RISCV/pr53662.mir

  Log Message:
  -----------
  [RISCV] Don't getDebugLoc for the end node of MBB iterator

Because of shrink wrapping, the block to insert epilog may don't have
instructions (Only debug instructions). And the position to insert may
point to MBB.end() that don't have a DebugLoc. This patch fix this
problem.

The test program was copied from the issue:https://github.com/llvm/llvm-project/issues/53662

Reviewed By: luismarques

Differential Revision: https://reviews.llvm.org/D123679