[llvm] [IR] Add Attribute::getValueAsParsedInteger helper (PR #194713)

[JP Hafer via llvm-commits]

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@@ -409,6 +409,14 @@ StringRef Attribute::getValueAsString() const {
   return pImpl->getValueAsString();
 }
 
+uint64_t Attribute::getValueAsParsedInteger(uint64_t Default) const {
+  if (!isStringAttribute())
+    return Default;
+  uint64_t Result = Default;
+  getValueAsString().getAsInteger(0, Result);
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jph-13 wrote:

`Attribute` doesn't carry an `LLVMContext`, so as I understand it, it can't emit diagnostics like the `Function` version. The callers here are post-verifier merge functions, thus the silent-default semantics — but happy to change the design if you'd prefer something stricter.

https://github.com/llvm/llvm-project/pull/194713