================
@@ -200,7 +200,9 @@ class SMECallAttrs {
}
bool requiresZASave() const {
- return requiresLazySave() || requiresPreservingAllZAState();
+ return requiresLazySave() || requiresPreservingAllZAState() ||
+ (caller().hasZAState() && callee().hasSharedZAInterface() &&
+ !callee().sharesZA());
----------------
MacDue wrote:
I'm not sure this is the right place to make that change. This will make
codegen insert a lazy-save before the call, which means we'll enter a function
with a shared-ZA interface in the dormant mode.
I somewhat think we should just emit an error in this case as it's not
supported and is really a silent miscompile.
https://github.com/llvm/llvm-project/pull/223393
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