[clang] [CIR] Add binary operators (PR #132420)

[Andy Kaylor via cfe-commits]

================
@@ -143,6 +147,114 @@ class CIRBaseBuilderTy : public mlir::OpBuilder {
     return createCast(loc, cir::CastKind::bitcast, src, newTy);
   }
 
+  mlir::Value createBinop(mlir::Value lhs, cir::BinOpKind kind,
----------------
andykaylor wrote:

```suggestion
  mlir::Value createBinOp(mlir::Value lhs, cir::BinOpKind kind,
```
I don't feel strongly about this, but it seems slightly better to me.

https://github.com/llvm/llvm-project/pull/132420