2012-10-10 Basile Starynkevitch <basile@starynkevitch.net>

	MELT branch merged with trunk rev 192289 using svnmerge.py



git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/branches/melt-branch@192291 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 31 insertions, 0 deletions

diff --git a/gcc/basic-block.h b/gcc/basic-block.h
index a5491b03011..61351fb248d 100644
--- a/gcc/basic-block.h
+++ b/gcc/basic-block.h
@@ -101,6 +101,37 @@ typedef struct gcov_working_set_info
   gcov_type min_counter;
 } gcov_working_set_t;
 
+/* Structure to gather statistic about profile consistency, per pass.
+   An array of this structure, indexed by pass static number, is allocated
+   in passes.c.  The structure is defined here so that different CFG modes
+   can do their book-keeping via CFG hooks.
+
+   For every field[2], field[0] is the count before the pass runs, and
+   field[1] is the post-pass count.  This allows us to monitor the effect
+   of each individual pass on the profile consistency.
+   
+   This structure is not supposed to be used by anything other than passes.c
+   and one CFG hook per CFG mode.  */
+struct profile_record
+{
+  /* The number of basic blocks where sum(freq) of the block's predecessors
+     doesn't match reasonably well with the incoming frequency.  */
+  int num_mismatched_freq_in[2];
+  /* Likewise for a basic block's successors.  */
+  int num_mismatched_freq_out[2];
+  /* The number of basic blocks where sum(count) of the block's predecessors
+     doesn't match reasonably well with the incoming frequency.  */
+  int num_mismatched_count_in[2];
+  /* Likewise for a basic block's successors.  */
+  int num_mismatched_count_out[2];
+  /* A weighted cost of the run-time of the function body.  */
+  gcov_type time[2];
+  /* A weighted cost of the size of the function body.  */
+  int size[2];
+  /* True iff this pass actually was run.  */
+  bool run;
+};
+
 /* Declared in cfgloop.h.  */
 struct loop;