fix bugs in push/pop segment support, rdar://8407242


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@113422 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/X86/AsmParser/X86AsmParser.cpp b/lib/Target/X86/AsmParser/X86AsmParser.cpp
index 7d62c46..9a43913 100644
--- a/lib/Target/X86/AsmParser/X86AsmParser.cpp
+++ b/lib/Target/X86/AsmParser/X86AsmParser.cpp
@@ -630,6 +630,7 @@
     .Case("iret", "iretl")
     .Case("sysret", "sysretl")
     .Case("push", Is64Bit ? "pushq" : "pushl")
+    .Case("pop", Is64Bit ? "popq" : "popl")
     .Case("pushf", Is64Bit ? "pushfq" : "pushfl")
     .Case("popf",  Is64Bit ? "popfq"  : "popfl")
     .Case("retl", Is64Bit ? "retl" : "ret")