This is the mail archive of the gcc-patches@gcc.gnu.org mailing list for the GCC project.


Index Nav: [Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav: [Date Prev] [Date Next] [Thread Prev] [Thread Next]
Other format: [Raw text]

[Google] Skip LIPO type unification for trivial module groups


The following patch fixes an inefficiency whereby type unification
was being attempted unnecessarily in LIPO even when there were no
aux modules.

Tested with regression tests and internal LIPO benchmark.

Ok for google/4_8?

Thanks,
Teresa

2013-10-10  Teresa Johnson  <tejohnson@google.com>

        * l-ipo.c (cgraph_unify_type_alias_sets): Skip LIPO type
        unification when there are no aux modules.

Index: l-ipo.c
===================================================================
--- l-ipo.c     (revision 203260)
+++ l-ipo.c     (working copy)
@@ -1059,7 +1059,7 @@ cgraph_unify_type_alias_sets (void)
   struct cgraph_node *node;
   struct varpool_node *pv;

-  if (!L_IPO_COMP_MODE)
+  if (!L_IPO_COMP_MODE || num_in_fnames == 1)
     return;

   vec_alloc (pending_types, 100);

-- 
Teresa Johnson | Software Engineer | tejohnson@google.com | 408-460-2413


Index Nav: [Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav: [Date Prev] [Date Next] [Thread Prev] [Thread Next]