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

[Erich Keane 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,
+                          const llvm::APInt &rhs) {
+    return create<cir::BinOp>(lhs.getLoc(), lhs.getType(), kind, lhs,
----------------
erichkeane wrote:

Its a shame for readability BinOp's create isnt `LHS`/`Kind`/`RHS`.

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