[llvm] Add comments (NFC) (PR #66427)

[Adrian Prantl via llvm-commits]

https://github.com/adrian-prantl updated https://github.com/llvm/llvm-project/pull/66427:

>From dcbc4a67a685facdb2266a514cfac51bb20e667c Mon Sep 17 00:00:00 2001
From: Adrian Prantl <aprantl at apple.com>
Date: Thu, 14 Sep 2023 12:54:36 -0700
Subject: [PATCH] Add comments (NFC)

---
 llvm/include/llvm/BinaryFormat/Swift.def | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/llvm/include/llvm/BinaryFormat/Swift.def b/llvm/include/llvm/BinaryFormat/Swift.def
index 9cb3c82c265f308..da83e3170528ea6 100644
--- a/llvm/include/llvm/BinaryFormat/Swift.def
+++ b/llvm/include/llvm/BinaryFormat/Swift.def
@@ -18,6 +18,7 @@
 #define HANDLE_SWIFT_SECTION(KIND, MACHO, ELF, COFF)
 #endif
 
+// Reflection metadata.
 HANDLE_SWIFT_SECTION(fieldmd, "__swift5_fieldmd", "swift5_fieldmd", ".sw5flmd")
 HANDLE_SWIFT_SECTION(assocty, "__swift5_assocty", "swift5_assocty", ".sw5asty")
 HANDLE_SWIFT_SECTION(builtin, "__swift5_builtin", "swift5_builtin", ".sw5bltn")
@@ -31,4 +32,6 @@ HANDLE_SWIFT_SECTION(protocs, "__swift5_protos", "swift5_protocols",
 HANDLE_SWIFT_SECTION(acfuncs, "__swift5_acfuncs", "swift5_accessible_functions",
                      ".sw5acfn$B")
 HANDLE_SWIFT_SECTION(mpenum, "__swift5_mpenum", "swift5_mpenum", ".sw5mpen$B")
-HANDLE_SWIFT_SECTION(swiftast, "__swift_ast", "swift_ast", "swiftast");
+
+// Debug info.
+HANDLE_SWIFT_SECTION(swiftast, "__swift_ast", "swift_ast", "swiftast")