add missing #include


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@32280 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/X86/X86AsmPrinter.h b/lib/Target/X86/X86AsmPrinter.h
index da7c053..b9b643b 100755
--- a/lib/Target/X86/X86AsmPrinter.h
+++ b/lib/Target/X86/X86AsmPrinter.h
@@ -23,6 +23,7 @@
 #include "llvm/CodeGen/DwarfWriter.h"
 #include "llvm/CodeGen/MachineDebugInfo.h"
 #include "llvm/ADT/Statistic.h"
+#include "llvm/Support/Compiler.h"
 #include <set>