Use Type::isIntOrPtrTy where possible, NFC

It's a bit neater to write T.isIntOrPtrTy() over `T.isIntegerTy() ||
T.isPointerTy()`.

I used Python's re.sub with this regex to update users:

  r'([\w.\->()]+)isIntegerTy\(\)\s*\|\|\s*\1isPointerTy\(\)'

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@336462 91177308-0d34-0410-b5e6-96231b3b80d8
8 files changed