[Hexagon] Add REQUIRES: asserts to testcases that use -debug-only

llvm-svn: 327279
diff --git a/llvm/test/CodeGen/Hexagon/swp-phi-chains.ll b/llvm/test/CodeGen/Hexagon/swp-phi-chains.ll
index 748d66e..e3a6c9d 100644
--- a/llvm/test/CodeGen/Hexagon/swp-phi-chains.ll
+++ b/llvm/test/CodeGen/Hexagon/swp-phi-chains.ll
@@ -1,4 +1,5 @@
 ; RUN: llc -march=hexagon -debug-only=pipeliner < %s -o - 2>&1 | FileCheck %s
+; REQUIRES: asserts
 
 ; Test that there is a chain edge between two dependent Phis.
 ; The pipeliner tries to remove chains between unrelated Phis, but