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

[Andy Kaylor via cfe-commits]

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@@ -232,6 +231,61 @@ LValue CIRGenFunction::emitUnaryOpLValue(const UnaryOperator *e) {
   llvm_unreachable("Unknown unary operator kind!");
 }
 
+LValue CIRGenFunction::emitBinaryOperatorLValue(const BinaryOperator *e) {
+  // Comma expressions just emit their LHS then their RHS as an l-value.
+  if (e->getOpcode() == BO_Comma) {
+    emitIgnoredExpr(e->getLHS());
+    return emitLValue(e->getRHS());
+  }
+
+  if (e->getOpcode() == BO_PtrMemD || e->getOpcode() == BO_PtrMemI) {
+    cgm.errorNYI(e->getSourceRange(), "member pointers");
+    return {};
+  }
+
+  assert(e->getOpcode() == BO_Assign && "unexpected binary l-value");
+
+  // Note that in all of these cases, __block variables need the RHS
+  // evaluated first just in case the variable gets moved by the RHS.
+
+  switch (CIRGenFunction::getEvaluationKind(e->getType())) {
+  case cir::TEK_Scalar: {
+    if (e->getLHS()->getType().getObjCLifetime() !=
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andykaylor wrote:

With have a MissingFeature for this. Can you add that here?

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