[clang] [llvm] [NVPTX] Add NVVMUpgradeAnnotations pass to cleanup legacy annotations (PR #119261)

[Artem Belevich via llvm-commits]

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@@ -5022,6 +5022,69 @@ bool llvm::UpgradeDebugInfo(Module &M) {
   return Modified;
 }
 
+bool static upgradeSingleNVVMAnnotation(GlobalValue *GV, StringRef K,
+                                        const Metadata *V) {
+  if (K == "kernel") {
+    assert(mdconst::extract<ConstantInt>(V)->getZExtValue() == 1);
+    cast<Function>(GV)->addFnAttr("nvvm.kernel");
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Artem-B wrote:

Nit: It could be hoisted out of conditionals into a common `auto F = cast<Function>(GV)`.

https://github.com/llvm/llvm-project/pull/119261