================
@@ -3361,6 +3382,194 @@ void PPCAIXAsmPrinter::emitModuleCommandLines(Module
&M) {
OutStreamer->emitXCOFFCInfoSym(".GCC.command.line", RSOS.str());
}
+static bool TOCRestoreNeeded(const GlobalIFunc &GI) {
+ auto IsLocalFunc = [&](const Value *V) {
+ if (!isa<Function>(V))
+ return false;
+ auto *F = cast<Function>(V);
+
+ // static functions are local
+ if (F->getLinkage() == GlobalValue::InternalLinkage)
+ return true;
+ // for now, declarations we treat as potentially non-local
+ if (F->isDeclarationForLinker())
+ return false;
+ // hidden visibility definitions cannot be preempted, so treat as local.
+ if (F->getVisibility() == GlobalValue::HiddenVisibility)
----------------
w2yehia wrote:
Here's my observations regarding `dso_local`:
- clang x86 sets `dso_local` in the following cases:
1) `-fPIE` (is the default if no pic/pie flags specified)
2) `-fpic/-fPIC -fno-semantic-interposition`
- clang ppc linux sets in (1) but not (2) because
`-fno-semantic-interposition` is ignored.
- clang aix never sets dso_local (for regular externals) because -fpic is
always ON and cannot be overridden with -fPIE.
hidden/protected/internal visibility doesn't ever set `dso_local`, maybe
because it's implicit dso_local.
So for now, I'm not looking at dso_local on AIX.
https://github.com/llvm/llvm-project/pull/153049
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