[lld] r295941 - Add a comment about .note.GNU-split-stack.

[Rui Ueyama via llvm-commits]

Author: ruiu
Date: Thu Feb 23 01:35:11 2017
New Revision: 295941

URL: http://llvm.org/viewvc/llvm-project?rev=295941&view=rev
Log:
Add a comment about .note.GNU-split-stack.

Modified:
    lld/trunk/ELF/InputFiles.cpp

Modified: lld/trunk/ELF/InputFiles.cpp
URL: http://llvm.org/viewvc/llvm-project/lld/trunk/ELF/InputFiles.cpp?rev=295941&r1=295940&r2=295941&view=diff
==============================================================================
--- lld/trunk/ELF/InputFiles.cpp (original)
+++ lld/trunk/ELF/InputFiles.cpp Thu Feb 23 01:35:11 2017
@@ -430,6 +430,10 @@ elf::ObjectFile<ELFT>::createInputSectio
   if (Name == ".note.GNU-stack")
     return &InputSection<ELFT>::Discarded;
 
+  // Split stacks is a feature to support a discontiguous stack. At least
+  // as of 2017, it seems that the feature is not being used widely.
+  // Only GNU gold supports that. We don't. For the details about that,
+  // see https://gcc.gnu.org/wiki/SplitStacks
   if (Name == ".note.GNU-split-stack") {
     error("objects using splitstacks are not supported");
     return &InputSection<ELFT>::Discarded;