[clang] [llvm] [WebAssembly,clang] Add __builtin_wasm_test_function_pointer_signature (PR #150201)

[Derek Schuff via llvm-commits]

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@@ -307,6 +310,14 @@ bool WebAssemblyTargetInfo::handleTargetFeatures(
       HasReferenceTypes = false;
       continue;
     }
+    if (Feature == "+gc") {
+      HasGC = true;
+      continue;
+    }
+    if (Feature == "-gc") {
+      HasGC = false;
+      continue;
+    }
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dschuff wrote:

the test for llvm/test/CodeGen/WebAssembly/target-features-cpus.ll below does seem to include gc in bleeding-edge. But you're right, that we've been also adding things with `addBleedingEdgeFeatures` so it's weird that that test changes. We should look into what's going on there.

https://github.com/llvm/llvm-project/pull/150201