[all-commits] [llvm/llvm-project] 297b77: [RISCV] Fix stack size computation when M extensio...

[Simeon K via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 297b77036e82b7684e1823c14b318e365aed5b26
      https://github.com/llvm/llvm-project/commit/297b77036e82b7684e1823c14b318e365aed5b26
  Author: Simeon K <5235180+simeonkr at users.noreply.github.com>
  Date:   2024-01-22 (Mon, 22 Jan 2024)

  Changed paths:
    M llvm/lib/Target/RISCV/RISCVInstrInfo.cpp
    M llvm/test/CodeGen/RISCV/rvv/allocate-lmul-2-4-8.ll

  Log Message:
  -----------
  [RISCV] Fix stack size computation when M extension disabled (#78602)

Ensure that getVLENFactoredAmount does not fail when the scale amount
requires the use of a non-trivial multiplication but the M extension is
not enabled. In such case, perform the multiplication using shifts and
adds.