[clang] [llvm] [InstCombine] Fold `X > C2 ? X + C1 : C2 + C1` to `max(X, C2) + C1` (PR #116888)

[Yingwei Zheng via cfe-commits]

================
@@ -1898,6 +1882,55 @@ static Instruction *foldSelectICmpEq(SelectInst &SI, ICmpInst *ICI,
   return nullptr;
 }
 
+// Turn select (Cmp X C1) (BOp X C2) C3
----------------
dtcxzyw wrote:

```suggestion
/// Turn select (Cmp X C1) (BOp X C2) C3
```
Use `///` for header comments.


https://github.com/llvm/llvm-project/pull/116888