Index: test/tools/gold/X86/cache.ll
===================================================================
--- test/tools/gold/X86/cache.ll
+++ test/tools/gold/X86/cache.ll
@@ -53,7 +53,8 @@
 ; RUN: ls %t.cache | count 5
 
 
-; Increase the age of llvmcache-foo
+; Increase the age of llvmcache-foo which is large file. It make llvmcache-foo be
+; the oldest time stamp so that it is processed and removed first.
 ; RUN: touch -r %t.cache/llvmcache-foo -d '-2 minutes' %t.cache/llvmcache-foo
 
 ; This should remove it.