Added an explicatory comment, thanks to Dmitri Gribenko for the sugge…

…stion.
Ajisaputrars · Aug 10, 2016 · 694ef45 · 694ef45
1 parent 8ab85d7
commit 694ef45
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/stdlib/public/core/DebuggerSupport.swift b/stdlib/public/core/DebuggerSupport.swift
@@ -283,6 +283,9 @@ public enum _DebuggerSupport {
     }
   }
 
+  // LLDB uses this function in expressions, and if it is inlined the resulting
+  // LLVM IR is enormous.  As a result, to improve LLDB performance we have made
+  // this stdlib_binary_only, which prevents inlining.
   @_semantics("stdlib_binary_only")
   public static func stringForPrintObject(_ value: Any) -> String {
     var maxItemCounter = Int.max