[llvm] Support IFuncs on Darwin platforms (#73686)

... by lowering them as lazy resolve-on-first-use symbol resolvers. Note that this is subtly different timing than on ELF platforms, where ifunc resolution happens at load time.

Since ld64 and ld-prime don't support all the cases we need for these, we lower them manually in the AsmPrinter.

1 files changed, 5 insertions, 7 deletions

diff --git a/llvm/lib/IR/Verifier.cpp b/llvm/lib/IR/Verifier.cpp
index cdc556b..8aba280 100644
--- a/llvm/lib/IR/Verifier.cpp
+++ b/llvm/lib/IR/Verifier.cpp
@@ -2229,13 +2229,11 @@ void Verifier::verifyFunctionAttrs(FunctionType *FT, AttributeList Attrs,
   }
 
   // Check EVEX512 feature.
-  if (MaxParameterWidth >= 512 && Attrs.hasFnAttr("target-features")) {
-    Triple T(M.getTargetTriple());
-    if (T.isX86()) {
-      StringRef TF = Attrs.getFnAttr("target-features").getValueAsString();
-      Check(!TF.contains("+avx512f") || !TF.contains("-evex512"),
-            "512-bit vector arguments require 'evex512' for AVX512", V);
-    }
+  if (MaxParameterWidth >= 512 && Attrs.hasFnAttr("target-features") &&
+      TT.isX86()) {
+    StringRef TF = Attrs.getFnAttr("target-features").getValueAsString();
+    Check(!TF.contains("+avx512f") || !TF.contains("-evex512"),
+          "512-bit vector arguments require 'evex512' for AVX512", V);
   }
 
   checkUnsignedBaseTenFuncAttr(Attrs, "patchable-function-prefix", V);