Fix a typo in target features

There was a slight typo in r364352 that ended up causing our backend to
complain on some x86 Android builds. This CL fixes that.

Differential Revision: https://reviews.llvm.org/D64781

llvm-svn: 366276

Author: gburgessiv

clang/lib/Driver/ToolChains/Arch/X86.cpp

@@ -135,7 +135,7 @@ void x86::getX86TargetFeatures(const Driver &D, const llvm::Triple &Triple,
     if (ArchType == llvm::Triple::x86_64) {
       Features.push_back("+sse4.2");
       Features.push_back("+popcnt");
-      Features.push_back("+mcx16");
+      Features.push_back("+cx16");
     } else
       Features.push_back("+ssse3");
   }

clang/test/Driver/clang-translation.c

@@ -318,7 +318,7 @@
 // ANDROID-X86_64: "-target-cpu" "x86-64"
 // ANDROID-X86_64: "-target-feature" "+sse4.2"
 // ANDROID-X86_64: "-target-feature" "+popcnt"
-// ANDROID-X86_64: "-target-feature" "+mcx16"
+// ANDROID-X86_64: "-target-feature" "+cx16"
 
 // RUN: %clang -target mips-linux-gnu -### -S %s 2>&1 | \
 // RUN: FileCheck -check-prefix=MIPS %s