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From: Jan Hubicka <hubicka@ucw.cz>
To: "marxin at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
Cc: gcc-bugs@gcc.gnu.org
Subject: Re: [Bug ipa/97292] [11 Regression] dealII from SPECCPU 2016 no longer terminates after g:c34db4b6f8a5d80367c709309f9b00cb32630054
Date: Thu, 8 Oct 2020 10:25:39 +0200	[thread overview]
Message-ID: <20201008082539.GB61027@kam.mff.cuni.cz> (raw)
In-Reply-To: <bug-97292-4-3dU1ez39or@http.gcc.gnu.org/bugzilla/>

Hi,
the following patch should let us to pinpoint the wrong disambiguation.
With -fdump-tree-all-details we should also see the difference in dump
file.

Honza

diff --git a/gcc/dbgcnt.def b/gcc/dbgcnt.def
index cf8775b2b66..07946a85ecc 100644
--- a/gcc/dbgcnt.def
+++ b/gcc/dbgcnt.def
@@ -171,6 +171,7 @@ DEBUG_COUNTER (if_after_reload)
 DEBUG_COUNTER (if_conversion)
 DEBUG_COUNTER (if_conversion_tree)
 DEBUG_COUNTER (ipa_cp_bits)
+DEBUG_COUNTER (ipa_mod_ref)
 DEBUG_COUNTER (ipa_sra_params)
 DEBUG_COUNTER (ipa_sra_retvalues)
 DEBUG_COUNTER (ira_move)
diff --git a/gcc/tree-ssa-alias.c b/gcc/tree-ssa-alias.c
index 97dc4ac8814..ba208604c30 100644
--- a/gcc/tree-ssa-alias.c
+++ b/gcc/tree-ssa-alias.c
@@ -2470,6 +2470,9 @@ modref_may_conflict (const gimple *stmt,
   if (tt->every_base)
     return true;
 
+  if (!dbg_cnt (ipa_mod_ref))
+    return true;
+
   base_set = ao_ref_base_alias_set (ref);
 
   ref_set = ao_ref_alias_set (ref);


  reply	other threads:[~2020-10-08  8:25 UTC|newest]

Thread overview: 22+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-10-05 13:53 [Bug ipa/97292] New: " tnfchris at gcc dot gnu.org
2020-10-06  7:40 ` [Bug ipa/97292] " marxin at gcc dot gnu.org
2020-10-08  8:25   ` Jan Hubicka [this message]
2020-10-06  8:27 ` marxin at gcc dot gnu.org
2020-10-06 16:44 ` hubicka at ucw dot cz
2020-10-07  9:13 ` marxin at gcc dot gnu.org
2020-10-07 11:20 ` rguenth at gcc dot gnu.org
2020-10-08  8:25 ` hubicka at ucw dot cz
2020-10-08 11:38 ` marxin at gcc dot gnu.org
2020-10-08 12:18 ` marxin at gcc dot gnu.org
2020-10-08 12:18 ` marxin at gcc dot gnu.org
2020-10-08 12:23 ` marxin at gcc dot gnu.org
2020-10-08 15:34 ` [Bug ipa/97292] [11 Regression] dealII from SPECCPU 2006 " marxin at gcc dot gnu.org
2020-10-08 15:53 ` tnfchris at gcc dot gnu.org
2020-10-08 17:29 ` hubicka at gcc dot gnu.org
2020-10-08 17:36 ` hubicka at gcc dot gnu.org
2020-10-08 17:44 ` hubicka at gcc dot gnu.org
2020-10-09  7:07 ` marxin at gcc dot gnu.org
2020-10-09  7:31 ` hubicka at gcc dot gnu.org
2020-10-09  7:42 ` marxin at gcc dot gnu.org
2020-10-09 10:27 ` cvs-commit at gcc dot gnu.org
2020-10-09 10:28 ` marxin at gcc dot gnu.org

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