[llvm] [ADT][APInt] add sfloordiv_ov APInt's member function (PR #84720)

[Jakub Kuderski via llvm-commits]

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@@ -2022,6 +2022,13 @@ APInt APInt::ushl_ov(unsigned ShAmt, bool &Overflow) const {
   return *this << ShAmt;
 }
 
+APInt APInt::sfloordiv_ov(const APInt &RHS, bool &Overflow) const {
+  auto quotient = sdiv_ov(RHS, Overflow);
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kuhar wrote:

nit: APInt instead of auto

https://github.com/llvm/llvm-project/pull/84720