Add support for macro parameters/arguments delimited by spaces,

to improve compatibility with GNU as.

Based on a patch by PaX Team.

Fixed assertion failures on non-Darwin and added additional test cases.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164248 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 11 insertions, 2 deletions

diff --git a/lib/MC/MCParser/AsmLexer.cpp b/lib/MC/MCParser/AsmLexer.cpp
index c76052d66e..f93f685bf5 100644
--- a/lib/MC/MCParser/AsmLexer.cpp
+++ b/lib/MC/MCParser/AsmLexer.cpp
@@ -396,8 +396,17 @@ AsmToken AsmLexer::LexToken() {
   case 0:
   case ' ':
   case '\t':
-    // Ignore whitespace.
-    return LexToken();
+    if (SkipSpace) {
+      // Ignore whitespace.
+      return LexToken();
+    } else {
+      int len = 1;
+      while (*CurPtr==' ' || *CurPtr=='\t') {
+        CurPtr++;
+        len++;
+      }
+      return AsmToken(AsmToken::Space, StringRef(TokStart, len));
+    }
   case '\n': // FALL THROUGH.
   case '\r':
     isAtStartOfLine = true;