Error out on CodeGen of unaligned load/store.  Fix test so it isn't accidentally testing that case.

llvm-svn: 139641
diff --git a/llvm/test/CodeGen/X86/atomic-load-store-wide.ll b/llvm/test/CodeGen/X86/atomic-load-store-wide.ll
index 227883e..a9ebfef 100644
--- a/llvm/test/CodeGen/X86/atomic-load-store-wide.ll
+++ b/llvm/test/CodeGen/X86/atomic-load-store-wide.ll
@@ -7,13 +7,13 @@
 ; CHECK: test1
 ; CHECK: cmpxchg8b
 ; CHECK-NEXT: jne
-  store atomic i64 %val1, i64* %ptr seq_cst, align 4
+  store atomic i64 %val1, i64* %ptr seq_cst, align 8
   ret void
 }
 
 define i64 @test2(i64* %ptr) {
 ; CHECK: test2
 ; CHECK: cmpxchg8b
-  %val = load atomic i64* %ptr seq_cst, align 4
+  %val = load atomic i64* %ptr seq_cst, align 8
   ret i64 %val
 }