================
@@ -1809,6 +1814,255 @@ void AArch64AsmPrinter::emitInstruction(const
MachineInstr *MI) {
EmitToStreamer(*OutStreamer, TmpInst);
}
+void AArch64AsmPrinter::emitGlobalIFunc(Module &M, const GlobalIFunc &GI) {
+ if (!TM.getTargetTriple().isOSBinFormatMachO())
+ return AsmPrinter::emitGlobalIFunc(M, GI);
+
+ // On Darwin platforms, emit a manually-constructed .symbol_resolver that
+ // implements the symbol resolution duties of the IFunc.
+ //
+ // Normally, this would be handled by linker magic, but unfortunately there
+ // are a few limitations in ld64 and ld-prime's implementation of
+ // .symbol_resolver that mean we can't always use them:
+ //
+ // * resolvers cannot be the target of an alias
+ // * resolvers cannot have private linkage
+ // * resolvers cannot have linkonce linkage
+ // * resolvers cannot appear in executables
+ // * resolvers cannot appear in bundles
+ //
+ // This works around that by emitting a close approximation of what the
linker
+ // would have done.
+
+ auto EmitLinkage = [&](MCSymbol *Sym) {
+ if (GI.hasExternalLinkage() || !MAI->getWeakRefDirective())
----------------
MaskRay wrote:
`MAI->getWeakRefDirective()` is always true for Mach-O.
https://github.com/llvm/llvm-project/pull/73686
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