[llvm] [AArch64] Add support for SHF_AARCH64_PURECODE ELF section flag (1/3) (PR #125687)

[Csanád Hajdú via llvm-commits]

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@@ -110,3 +110,15 @@ Symbols:
 # ARM-NEXT:  L (link order), O (extra OS processing required), G (group), T (TLS),
 # ARM-NEXT:  C (compressed), x (unknown), o (OS specific), E (exclude),
 # ARM-NEXT:  R (retain), y (purecode), p (processor specific)
+
+## For an EM_AARCH64 target we print "y" for the SHF_AARCH64_PURECODE section flag.
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Il-Capitano wrote:

Done. I actually had a bug in this test case, where the ARM object file was passed in the AArch64 test as well. Fixing this revealed I hadn't added the `EM_AARCH64` case for printing the purecode key here. Thanks for the suggestion!

https://github.com/llvm/llvm-project/pull/125687