Fix broken x86_64 tests which specify non-64-bit cpu's.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134756 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/CodeGen/X86/2010-07-11-FPStackLoneUse.ll b/test/CodeGen/X86/2010-07-11-FPStackLoneUse.ll
index be7d94c..e96da94 100644
--- a/test/CodeGen/X86/2010-07-11-FPStackLoneUse.ll
+++ b/test/CodeGen/X86/2010-07-11-FPStackLoneUse.ll
@@ -1,4 +1,4 @@
-; RUN: llc < %s -mcpu=i486
+; RUN: llc < %s -mcpu=core2
 ; PR7375
 ;
 ; This function contains a block (while.cond) with a lonely RFP use that is