specify a target triple so global variable manglings are consistent etc.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@79118 91177308-0d34-0410-b5e6-96231b3b80d8

test/CodeGen/X86/sse3.ll

@@ -1,6 +1,7 @@
 ; These are tests for SSE3 codegen.  Yonah has SSE3 and earlier but not SSSE3+.
 
-; RUN: llvm-as < %s | llc -march=x86-64 -mcpu=yonah | FileCheck %s --check-prefix=X64
+; RUN: llvm-as < %s | llc -march=x86-64 -mcpu=yonah -mtriple=i686-apple-darwin9\
+; RUN:              | FileCheck %s --check-prefix=X64
 
 ; Test for v8xi16 lowering where we extract the first element of the vector and
 ; placed it in the second element of the result.