Attempt to fix test/Driver/masm.c on the ARM bots.

llvm-svn: 322674
diff --git a/clang/test/Driver/masm.c b/clang/test/Driver/masm.c
index 41b50ef..5c7251a 100644
--- a/clang/test/Driver/masm.c
+++ b/clang/test/Driver/masm.c
@@ -2,7 +2,7 @@
 // RUN: %clang -target i386-unknown-linux -masm=att -S %s -### 2>&1 | FileCheck --check-prefix=CHECK-ATT %s
 // RUN: %clang -target i386-unknown-linux -S -masm=somerequired %s -### 2>&1 | FileCheck --check-prefix=CHECK-SOMEREQUIRED %s
 // RUN: %clang -target arm-unknown-eabi -S -masm=intel %s -### 2>&1 | FileCheck --check-prefix=CHECK-ARM %s
-// RUN: %clang_cl /FA -### -- %s 2>&1 | FileCheck --check-prefix=CHECK-CL %s
+// RUN: %clang_cl --target=x86_64 /FA -### -- %s 2>&1 | FileCheck --check-prefix=CHECK-CL %s
 
 int f() {
 // CHECK-INTEL: -x86-asm-syntax=intel