MC asm parser macro argument count was wrong when empty.
evaluated to '1' when the argument list was empty (should be '0').
rdar://11057257
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@152967 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/MC/MCParser/AsmParser.cpp b/lib/MC/MCParser/AsmParser.cpp
index bd5956f..41ad164 100644
--- a/lib/MC/MCParser/AsmParser.cpp
+++ b/lib/MC/MCParser/AsmParser.cpp
@@ -1528,6 +1528,11 @@
}
Lex();
}
+ // If there weren't any arguments, erase the token vector so everything
+ // else knows that. Leaving around the vestigal empty token list confuses
+ // things.
+ if (MacroArguments.size() == 1 && MacroArguments.back().empty())
+ MacroArguments.clear();
// Macro instantiation is lexical, unfortunately. We construct a new buffer
// to hold the macro body with substitutions.
diff --git a/test/MC/AsmParser/macro-args.s b/test/MC/AsmParser/macro-args.s
index 808b6eb..4b87899 100644
--- a/test/MC/AsmParser/macro-args.s
+++ b/test/MC/AsmParser/macro-args.s
@@ -8,3 +8,13 @@
GET is_sse, %eax
// CHECK: movl is_sse@GOTOFF(%ebx), %eax
+
+.macro bar
+ .long $n
+.endm
+
+bar 1, 2, 3
+bar
+
+// CHECK: .long 3
+// CHECK: .long 0