[clang] [llvm] [CaptureTracking][FunctionAttrs] Add support for CaptureInfo (PR #125880)

[via cfe-commits]

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@@ -1281,17 +1321,15 @@ static void addArgumentAttrs(const SCCNodeSet &SCCNodes,
       if (ArgumentSCC[0]->Uses.size() == 1 &&
           ArgumentSCC[0]->Uses[0] == ArgumentSCC[0]) {
         Argument *A = ArgumentSCC[0]->Definition;
-        A->addAttr(Attribute::getWithCaptureInfo(A->getContext(),
-                                                 CaptureInfo::none()));
-        ++NumNoCapture;
-        Changed.insert(A->getParent());
+        CaptureInfo NewCI = ArgumentSCC[0]->CC;
+        if (NewCI != A->getAttributes().getCaptureInfo()) {
+          A->addAttr(Attribute::getWithCaptureInfo(A->getContext(), NewCI));
+          addCapturesStat(NewCI);
+          Changed.insert(A->getParent());
+        }
 
-        // Infer the access attributes given the new nocapture one
-        SmallPtrSet<Argument *, 8> Self;
-        Self.insert(&*A);
-        Attribute::AttrKind R = determinePointerAccessAttrs(&*A, Self);
-        if (R != Attribute::None)
-          addAccessAttr(A, R);
+        // Infer the access attributes given the new captures one
+        DetermineAccessAttrsForSingleton(A);
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goldsteinn wrote:

Don't need to set changed?

https://github.com/llvm/llvm-project/pull/125880