Add explicit triples to avoid default behavior that varies by host.

llvm-svn: 41510
diff --git a/llvm/test/CodeGen/X86/memmove-2.ll b/llvm/test/CodeGen/X86/memmove-2.ll
index bb5485f..37bbe0b 100644
--- a/llvm/test/CodeGen/X86/memmove-2.ll
+++ b/llvm/test/CodeGen/X86/memmove-2.ll
@@ -1,4 +1,4 @@
-; RUN: llvm-as < %s | llc -march=x86 | not grep call
+; RUN: llvm-as < %s | llc -march=x86 -mtriple=i686-pc-linux-gnu | not grep call
 
 declare void @llvm.memmove.i64(i8* %d, i8* %s, i64 %l, i32 %a)