This is how it should've been and brings it more in line with
std::string_view. There should be no functional change here.
This is mostly mechanical from a custom clang-tidy check, with a lot of
manual fixups. It uncovers a lot of minor inefficiencies.
This doesn't actually modify StringRef yet, I'll do that in a follow-up.
Introduce support for applying the stripe operator to sum expressions, as in
(x + A) # B = x + A - (x + A) mod B.
This is required to represent a combination of tiling and padding in the SDBM
framework, and is a valid SDBM construct that was not originally supported.
PiperOrigin-RevId: 269758807
This better reflects how this kind of expressions is used and avoids the
potential confusion since the expression can take negative values. Term
expressions comprise dimensions, symbols and stripe expressions. In an SDBM
domain, a stripe expression always corresponds to a variable, input or
temporary. This expression can appear anywhere an input variable can,
including on the LHS of other stripe expressions.
PiperOrigin-RevId: 268486066
River Riddle