[llvm] [LLVM][Clang][AArch64] Implement AArch64 build attributes (PR #118771)

[Oliver Stannard via llvm-commits]

================
@@ -793,20 +793,23 @@ void ARMTargetELFStreamer::switchVendor(StringRef Vendor) {
 
 void ARMTargetELFStreamer::emitAttribute(unsigned Attribute, unsigned Value) {
   getStreamer().setAttributeItem(Attribute, Value,
-                                 /* OverwriteExisting= */ true);
+                                 /* OverwriteExisting= */ true,
+                                 getStreamer().Contents);
----------------
ostannard wrote:

I don't like this API change, requiring non-AArch64 targets to pass a member variable of the stream back into the streamer every time. What about adding a new function to emit an attribute in a specific sub-section?

https://github.com/llvm/llvm-project/pull/118771