[clang] [compiler-rt] [Clang][CodeGen] Report when an alias points to an incompatible target (PR #192397)

[Eli Friedman via cfe-commits]

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@@ -804,6 +804,48 @@ void CodeGenModule::checkAliases() {
       continue;
     }
 
+    if (!IsIFunc) {
+      // Function declarations can only alias functions (including IFUNCs).
+      // Similarly, variable declarations can only alias variables.
+      if (isa<FunctionDecl>(D) != isa<llvm::Function, llvm::GlobalIFunc>(GV)) {
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efriedma-quic wrote:

Okay, I guess that's fine.

https://github.com/llvm/llvm-project/pull/192397