[all-commits] [llvm/llvm-project] f7709a: [RISCV] Add a test showing incorrect RVV stack ali...

[Fraser Cormack via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: f7709a059ac0ef1edaa2dc83321a4d972933e975
      https://github.com/llvm/llvm-project/commit/f7709a059ac0ef1edaa2dc83321a4d972933e975
  Author: Fraser Cormack <fraser at codeplay.com>
  Date:   2022-05-17 (Tue, 17 May 2022)

  Changed paths:
    A llvm/test/CodeGen/RISCV/rvv/rvv-stack-align.mir

  Log Message:
  -----------
  [RISCV] Add a test showing incorrect RVV stack alignment

The RISC-V stack is assumed to be aligned to 16 bytes and can handle stack
realignment for larger objects, but the "RVV stack" is only ensured to be
aligned to 8 bytes. This means that objects specified at a larger alignment may
be misaligned, not only for 16-byte-aligned RVV objects that don't trigger
realignment, but also for 32-byte-and-larger-aligned objects which do.

The new test checks a variety of alignment configurations, showing the
misaligned cases.

Reviewed By: reames

Differential Revision: https://reviews.llvm.org/D110933