From 889069443b66c07d698a6813e22d2498a30c749f Mon Sep 17 00:00:00 2001
From: Saleem Abdulrasool <compnerd@compnerd.org>
Date: Wed, 18 Jun 2014 20:57:32 +0000
Subject: [PATCH] MC: do not add comment string to the AsmToken in
 AsmLexer::LexLineComment

Fixes macros with varargs if the macro instantiation has a trailing comment.

Patch by Janne Grunau!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@211219 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/MC/MCParser/AsmLexer.cpp |  4 ++--
 test/MC/AsmParser/vararg.s   | 10 ++++++++++
 2 files changed, 12 insertions(+), 2 deletions(-)

diff --git a/lib/MC/MCParser/AsmLexer.cpp b/lib/MC/MCParser/AsmLexer.cpp
index bca516eca02..7991ef5fe09 100644
--- a/lib/MC/MCParser/AsmLexer.cpp
+++ b/lib/MC/MCParser/AsmLexer.cpp
@@ -201,8 +201,8 @@ AsmToken AsmLexer::LexLineComment() {
     CurChar = getNextChar();
 
   if (CurChar == EOF)
-    return AsmToken(AsmToken::Eof, StringRef(CurPtr, 0));
-  return AsmToken(AsmToken::EndOfStatement, StringRef(CurPtr, 0));
+    return AsmToken(AsmToken::Eof, StringRef(TokStart, 0));
+  return AsmToken(AsmToken::EndOfStatement, StringRef(TokStart, 0));
 }
 
 static void SkipIgnoredIntegerSuffix(const char *&CurPtr) {
diff --git a/test/MC/AsmParser/vararg.s b/test/MC/AsmParser/vararg.s
index b27668ea337..e3236b072d1 100644
--- a/test/MC/AsmParser/vararg.s
+++ b/test/MC/AsmParser/vararg.s
@@ -17,6 +17,12 @@
 .endif
 .endm
 
+.macro ifcc4 arg0, arg1:vararg
+.if cc
+            movl \arg1, \arg0
+.endif
+.endm
+
 .text
 
 // CHECK: movl %esp, %ebp
@@ -25,6 +31,8 @@
 // CHECK: movl %ecx, %ebx
 // CHECK: movl %ecx, %eax
 // CHECK: movl %eax, %ecx
+// CHECK: movl %ecx, %eax
+// CHECK: movl %eax, %ecx
 .set cc,1
   ifcc  movl    %esp, %ebp
         subl $0, %esp
@@ -33,6 +41,8 @@
   ifcc2 %ecx, %ebx
   ifcc3 %ecx %eax
   ifcc3 %eax, %ecx
+  ifcc4 %eax %ecx  ## test
+  ifcc4 %ecx, %eax ## test
 
 // CHECK-NOT movl
 // CHECK: subl $1, %esp
-- 
2.34.1