remove some unneeded eh generation


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@57887 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/CodeGen/X86/ret-i64-0.ll b/test/CodeGen/X86/ret-i64-0.ll
index e62008f..c59e4cf 100644
--- a/test/CodeGen/X86/ret-i64-0.ll
+++ b/test/CodeGen/X86/ret-i64-0.ll
@@ -1,5 +1,5 @@
 ; RUN: llvm-as < %s | llc -march=x86 | grep xor | count 2
 
-define i64 @foo() {
+define i64 @foo() nounwind {
   ret i64 0
 }