From: Chris Lattner <sabre@nondot.org>
Date: Wed, 17 Feb 2010 01:38:01 +0000 (+0000)
Subject: add a comment explaining why darwin/i386 uses ## as a comment.
X-Git-Url: http://plrg.eecs.uci.edu/git/?a=commitdiff_plain;h=feeb93ecd25e34140a970b5e9ccc2e4bbb5eccf2;p=oota-llvm.git

add a comment explaining why darwin/i386 uses ## as a comment.
It's not clear why this is really required, but it was explicitly
added in r48808 with no real explanation or rdar #.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96438 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/Target/X86/X86MCAsmInfo.cpp b/lib/Target/X86/X86MCAsmInfo.cpp
index 6701fabe03a..b220cff54c8 100644
--- a/lib/Target/X86/X86MCAsmInfo.cpp
+++ b/lib/Target/X86/X86MCAsmInfo.cpp
@@ -55,6 +55,8 @@ X86MCAsmInfoDarwin::X86MCAsmInfoDarwin(const Triple &Triple) {
   if (!is64Bit)
     Data64bitsDirective = 0;       // we can't emit a 64-bit unit
 
+  // Use ## as a comment string so that .s files generated by llvm can go
+  // through the GCC preprocessor without causing an error.
   CommentString = "##";
   PCSymbol = ".";