[PATCH] D42123: Derive GEP index type from Data Layout

[Elena Demikhovsky via Phabricator via llvm-commits]

delena added a comment.

I want to deprecate SCEVs for pointers if the index size is not equal to pointer size.
What do you think?

  bool ScalarEvolution::isSCEVable(Type *Ty) const {
    if (Ty->isIntegerTy())
      return true;
    if (Ty->isPointerTy()) {
      // Pointer can't be scevable if index type and pointer type have different
      // width.
      const DataLayout& DL = getDataLayout();
      if (DL.getIndexTypeSizeInBits(Ty) == DL.getPointerTypeSizeInBits(Ty))
        return true;
    }
    return false;

}


Repository:
  rL LLVM

https://reviews.llvm.org/D42123