[llvm] [IR] Check parameters of target extension types on construction (PR #107268)

[Jay Foad via llvm-commits]

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@@ -3530,7 +3530,12 @@ bool LLParser::parseTargetExtType(Type *&Result) {
   if (parseToken(lltok::rparen, "expected ')' in target extension type"))
     return true;
 
-  Result = TargetExtType::get(Context, TypeName, TypeParams, IntParams);
+  auto TTy =
+      TargetExtType::getOrError(Context, TypeName, TypeParams, IntParams);
+  if (auto E = TTy.takeError())
+    return tokError(toString(std::move(E)));
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jayfoad wrote:

Done, but I don't know how to write a test case for error handling in BitcodeReader.

https://github.com/llvm/llvm-project/pull/107268