[llvm] [SystemZ][z/OS] Emit alignment in HLASM syntax (PR #222121)

[Kai Nacke via llvm-commits]

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@@ -310,30 +281,77 @@ void SystemZHLASMAsmStreamer::EmitComment() {
   CommentToEmit.clear();
 }
 
+void SystemZHLASMAsmStreamer::flushPendingAlignment() {
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redstar wrote:

I agree with that this is a potential source of errors.
The effect is, as you pointed out, that there would be 2 `DS` statements, one for the alignment and one for the label. This is not the idiomatic HLASM way, but there are no other side effects (as far as I am aware of).

https://github.com/llvm/llvm-project/pull/222121