[all-commits] [llvm/llvm-project] e620ea: [SelectionDAG][RISCV][SVE] Harden fixed offset ver...

[Craig Topper via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: e620eac75e470f94928a17d215a3be947712028b
      https://github.com/llvm/llvm-project/commit/e620eac75e470f94928a17d215a3be947712028b
  Author: Craig Topper <craig.topper at sifive.com>
  Date:   2023-08-21 (Mon, 21 Aug 2023)

  Changed paths:
    M llvm/include/llvm/Support/TypeSize.h
    M llvm/lib/CodeGen/Analysis.cpp

  Log Message:
  -----------
  [SelectionDAG][RISCV][SVE] Harden fixed offset version of ComputeValueVTs against scalable offsets.

Use getFixedValue instead of getKnownMinValue to convert TypeSize
to uint64_t. I believe this would have caught the bug fixed by
D157872.

To prevent false failures, I had to treat a scalable 0 as if it
is fixed value.

Reviewed By: paulwalker-arm

Differential Revision: https://reviews.llvm.org/D158115