Add -march to fix the bots.

llvm-svn: 124774
diff --git a/llvm/test/CodeGen/X86/pr9127.ll b/llvm/test/CodeGen/X86/pr9127.ll
index af08490..45b0c6c 100644
--- a/llvm/test/CodeGen/X86/pr9127.ll
+++ b/llvm/test/CodeGen/X86/pr9127.ll
@@ -1,4 +1,4 @@
-; RUN: llc < %s | FileCheck %s
+; RUN: llc -march=x86-64 < %s | FileCheck %s
 
 define i8 @foobar(double %d, double* %x) {
 entry: