MC: Test quoted label

Author: MaskRay

llvm/test/MC/AsmParser/quoted.s

@@ -0,0 +1,15 @@
+# RUN: rm -rf %t && split-file %s %t && cd %t
+# RUN: llvm-mc -triple x86_64 a.s | FileCheck %s
+# RUN: not llvm-mc -triple x86_64 err.s 2>&1 | FileCheck %s --check-prefix=ERR
+
+#--- a.s
+# CHECK: .type "a b",@function
+# CHECK: "a b":
+.type "a b", @function
+"a b":
+  call "a b"
+
+#--- err.s
+ "a\":
+# ERR: 1:2: error: unterminated string constant
+# ERR: 1:2: error: unexpected token at start of statement