[PATCH 2/2] IPA ICF: add support for debug counter.

[mliska]

Hi.

Following patch add support of dbg-cnt for IPA ICF pass.

Ready for trunk?
Thanks,
Martin

gcc/ChangeLog:

2015-05-15  Martin Liska  <mli...@suse.cz>

        * dbgcnt.def: Add new counter.
        * ipa-icf.c (sem_item_optimizer::merge_classes): Use the
        counter.
---
 gcc/dbgcnt.def | 1 +
 gcc/ipa-icf.c  | 4 +++-
 2 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/gcc/dbgcnt.def b/gcc/dbgcnt.def
index 95f6b06..24bf24b 100644
--- a/gcc/dbgcnt.def
+++ b/gcc/dbgcnt.def
@@ -168,6 +168,7 @@ DEBUG_COUNTER (if_after_reload)
 DEBUG_COUNTER (if_conversion)
 DEBUG_COUNTER (if_conversion_tree)
 DEBUG_COUNTER (ira_move)
+DEBUG_COUNTER (merged_ipa_icf)
 DEBUG_COUNTER (local_alloc_for_sched)
 DEBUG_COUNTER (merged_ipa_icf)
 DEBUG_COUNTER (postreload_cse)
diff --git a/gcc/ipa-icf.c b/gcc/ipa-icf.c
index 1fbdf6d..1237157 100644
--- a/gcc/ipa-icf.c
+++ b/gcc/ipa-icf.c
@@ -123,6 +123,7 @@ along with GCC; see the file COPYING3.  If not see
 #include "ipa-icf-gimple.h"
 #include "ipa-icf.h"
 #include "stor-layout.h"
+#include "dbgcnt.h"
 
 using namespace ipa_icf_gimple;
 
@@ -3453,7 +3454,8 @@ sem_item_optimizer::merge_classes (unsigned int 
prev_class_count)
                alias->dump_to_file (dump_file);
              }
 
-           merged_p |= source->merge (alias);
+           if (dbg_cnt (merged_ipa_icf))
+             merged_p |= source->merge (alias);
          }
       }
 
-- 
2.1.4