[all-commits] [llvm/llvm-project] dc81e6: [IndVars] Check expansion safety in makeIVComparis...

[Nikita Popov via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: dc81e69eb126ea1dbab202733ae34b1a3d6eb0cf
      https://github.com/llvm/llvm-project/commit/dc81e69eb126ea1dbab202733ae34b1a3d6eb0cf
  Author: Nikita Popov <npopov at redhat.com>
  Date:   2023-05-31 (Wed, 31 May 2023)

  Changed paths:
    M llvm/lib/Transforms/Utils/SimplifyIndVar.cpp
    A llvm/test/Transforms/IndVarSimplify/pr62992.ll

  Log Message:
  -----------
  [IndVars] Check expansion safety in makeIVComparisonInvariant() (PR62992)

Make sure the invariant expressions are safe to expand. In
particular, we should not speculative a trapping division into
the preheader.

Fixes https://github.com/llvm/llvm-project/issues/62992.