[llvm] [lldb] [lld] [libcxx] [clang-tools-extra] [libcxxabi] [libc] [clang] [libunwind] [openmp] [compiler-rt] [flang] [mlir] [clang] static operators should evaluate object argument (PR #68485)

[Younan Zhang via cfe-commits]

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@@ -15097,15 +15102,9 @@ ExprResult Sema::CreateOverloadedArraySubscriptExpr(SourceLocation LLoc,
         ExprValueKind VK = Expr::getValueKindForType(ResultTy);
         ResultTy = ResultTy.getNonLValueExprType(Context);
 
-        CallExpr *TheCall;
-        if (Method->isInstance())
-          TheCall = CXXOperatorCallExpr::Create(
-              Context, OO_Subscript, FnExpr.get(), MethodArgs, ResultTy, VK,
-              RLoc, CurFPFeatureOverrides());
-        else
-          TheCall =
-              CallExpr::Create(Context, FnExpr.get(), MethodArgs, ResultTy, VK,
-                               RLoc, CurFPFeatureOverrides());
+        CallExpr *TheCall = CXXOperatorCallExpr::Create(
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zyn0217 wrote:

Thanks for the explanation! I think this is reasonable and makes it much more intuitive for static operator call expressions. So, if I understand the change correctly, I think we can simplify the condition testing at the clangd side: we can avoid the check isInstance on expressions. That means, can we just reduce the condition to IsFunctor && hasCXXExplicitFunctionObjectParameter?

I’m on my phone now, so I couldn't validate my thoughts. Could you please help me for it? I’m willing to help you reland the patch if that works!

https://github.com/llvm/llvm-project/pull/68485