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

[Kai Nacke via llvm-commits]

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@@ -3,12 +3,12 @@
 ; RUN: llc < %s -mtriple=s390x-ibm-zos -mcpu=z10 | FileCheck %s
 
 define i8 @call_char(){
-; CHECK-LABEL: call_char DS 0H
+; CHECK-LABEL: call_char DS 0B
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redstar wrote:

I found no good way to preserve this. The `flushPendingAlignment()` logic was a try to see if it can help, but there is no alignment emitted before the label. All code labels (and most of the other labels) are 2-byte aligned, but for that I would need to keep a running counter of the instruction / data size.

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