[all-commits] [llvm/llvm-project] daf897: [IR] Check for SignedMin/-1 division in canTrap() ...

Nikita Popov via All-commits all-commits at lists.llvm.org
Fri Jun 17 02:25:27 PDT 2022

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: daf897d559fcc4fdc88812941aba83ab05463e11
  Author: Nikita Popov <npopov at redhat.com>
  Date:   2022-06-17 (Fri, 17 Jun 2022)

  Changed paths:
    M llvm/lib/IR/Constants.cpp
    M llvm/test/Transforms/SimplifyCFG/ConditionalTrappingConstantExpr.ll

  Log Message:
  [IR] Check for SignedMin/-1 division in canTrap() (PR56038)

In addition to division by zero, signed division also traps for
SignedMin / -1. This was handled in isSafeToSpeculativelyExecute(),
but not in Constant::canTrap().

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