[llvm] [AMDGPU] Rework getDivNumBits API (PR #119768)

[Jay Foad via llvm-commits]

================
@@ -1189,27 +1188,32 @@ static Value* getMulHu(IRBuilder<> &Builder, Value *LHS, Value *RHS) {
   return getMul64(Builder, LHS, RHS).second;
 }
 
-/// Figure out how many bits are really needed for this division. \p AtLeast is
-/// an optimization hint to bypass the second ComputeNumSignBits call if we the
-/// first one is insufficient. Returns -1 on failure.
-int AMDGPUCodeGenPrepareImpl::getDivNumBits(BinaryOperator &I, Value *Num,
-                                            Value *Den, unsigned AtLeast,
-                                            bool IsSigned) const {
+/// Figure out how many bits are really needed for this division.
+/// \p MaxDivBits is an optimization hint to bypass the second
+/// ComputeNumSignBits/computeKnownBits call if we the first one is
----------------
jayfoad wrote:

Remove "we". Or did you mean "if we know"?

https://github.com/llvm/llvm-project/pull/119768