Bootstrapped / tested on x86_64-unknwon-linux-gnu, applied.
Richard.
2019-11-08 Richard Biener <rguent...@suse.de>
* dbgcnt.def (ivopts_loop): Add.
* tree-ssa-loop-ivopts.c (tree_ssa_iv_optimize): Check
ivopts_loop before optimizing a loop.
Index: gcc/dbgcnt.def
===================================================================
--- gcc/dbgcnt.def (revision 277965)
+++ gcc/dbgcnt.def (working copy)
@@ -199,3 +199,4 @@ DEBUG_COUNTER (dom_unreachable_edges)
DEBUG_COUNTER (match)
DEBUG_COUNTER (store_merging)
DEBUG_COUNTER (gimple_unroll)
+DEBUG_COUNTER (ivopts_loop)
Index: gcc/tree-ssa-loop-ivopts.c
===================================================================
--- gcc/tree-ssa-loop-ivopts.c (revision 277965)
+++ gcc/tree-ssa-loop-ivopts.c (working copy)
@@ -131,6 +131,7 @@ along with GCC; see the file COPYING3.
#include "tree-ssa-address.h"
#include "builtins.h"
#include "tree-vectorizer.h"
+#include "dbgcnt.h"
/* FIXME: Expressions are expanded to RTL in this pass to determine the
cost of different addressing modes. This should be moved to a TBD
@@ -8043,6 +8044,9 @@ tree_ssa_iv_optimize (void)
/* Optimize the loops starting with the innermost ones. */
FOR_EACH_LOOP (loop, LI_FROM_INNERMOST)
{
+ if (!dbg_cnt (ivopts_loop))
+ continue;
+
if (dump_file && (dump_flags & TDF_DETAILS))
flow_loop_dump (loop, dump_file, NULL, 1);
