[llvm] [CodeGen][ARM64EC] Add support for hybrid_patchable attribute. (PR #92965)

[Eli Friedman via llvm-commits]

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@@ -780,6 +889,17 @@ bool AArch64Arm64ECCallLowering::processFunction(
         continue;
       }
 
+      // Use mangled global alias for direct calls to patchable functions.
+      if (GlobalAlias *A =
+              dyn_cast_or_null<GlobalAlias>(CB->getCalledOperand())) {
+        auto I = FnsMap.find(A);
+        if (I != FnsMap.end()) {
+          CB->setCalledOperand(I->second);
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efriedma-quic wrote:

It feels a little weird to rewrite all references to the function to aliases, then rewrite them again, but I guess it works.

https://github.com/llvm/llvm-project/pull/92965