AsmParser: More generic support for integer type suffices.

For integer constants, allow 'L', 'UL' as well as 'ULL' and 'LL'. This provides
better support for shared headers between .s and .c files that define bunches
of constant values.

rdar://9321056

llvm-svn: 176118

1 files changed, 9 insertions, 6 deletions

diff --git a/llvm/lib/MC/MCParser/AsmLexer.cpp b/llvm/lib/MC/MCParser/AsmLexer.cpp
index 86a9674..c1c594a 100644
--- a/llvm/lib/MC/MCParser/AsmLexer.cpp
+++ b/llvm/lib/MC/MCParser/AsmLexer.cpp
@@ -156,10 +156,13 @@ AsmToken AsmLexer::LexLineComment() {
 }
 
 static void SkipIgnoredIntegerSuffix(const char *&CurPtr) {
-  if (CurPtr[0] == 'L' && CurPtr[1] == 'L')
-    CurPtr += 2;
-  if (CurPtr[0] == 'U' && CurPtr[1] == 'L' && CurPtr[2] == 'L')
-    CurPtr += 3;
+  // Skip ULL, UL, U, L and LL suffices.
+  if (CurPtr[0] == 'U')
+    ++CurPtr;
+  if (CurPtr[0] == 'L')
+    ++CurPtr;
+  if (CurPtr[0] == 'L')
+    ++CurPtr;
 }
 
 // Look ahead to search for first non-hex digit, if it's [hH], then we treat the
@@ -220,8 +223,8 @@ AsmToken AsmLexer::LexDigit() {
     if (Radix == 2 || Radix == 16)
       ++CurPtr;
 
-    // The darwin/x86 (and x86-64) assembler accepts and ignores ULL and LL
-    // suffixes on integer literals.
+    // The darwin/x86 (and x86-64) assembler accepts and ignores type
+    // suffices on integer literals.
     SkipIgnoredIntegerSuffix(CurPtr);
 
     return AsmToken(AsmToken::Integer, Result, Value);