[llvm] [AArch64][Build Attributes] Improve Parsing and Formatting (PR #126530)

[via llvm-commits]

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@@ -0,0 +1,50 @@
+// RUN: llvm-mc -triple=aarch64 %s -o - | FileCheck %s --check-prefix=ASM
+// RUN: llvm-mc -triple=aarch64 -filetype=obj %s -o - | llvm-readelf --hex-dump=.ARM.attributes - | FileCheck %s --check-prefix=ELF
+
+// ASM: .aeabi_subsection	subsection_a, optional, uleb128
+// ASM: .aeabi_subsection	aeabi_subsection, optional, ntbs
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sivan-shani wrote:

The different between Arm and AArch64 might be due to the way `MCAsmStreamer::addExplicitComment` handle the different comments. It has a specific implementation for `\\` comments then `@` comments.

https://github.com/llvm/llvm-project/pull/126530