From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 1666) id 1E5073943406; Fri, 25 Nov 2022 08:19:05 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 1E5073943406 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org; s=default; t=1669364345; bh=q28mawh6dZQlqNpf2WfCnixkisAveiMYbNwAh76R67o=; h=From:To:Subject:Date:From; b=qARYaSjor8sK3k4K1zPfr4RRP05utU+fn3sga8Wcj0RFtloZgziAqf+AxC9Sbfb2u o+GFEJpQEH8bkPEUMDE4H8IflkfZqvD0sV0Dhs9R6oA/GppCu3Inz5kMvpXIzkAEt5 9iuyNuQxG2STB80QMZthDDJm0s71TwMUsFGeJe5o= MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset="utf-8" From: Richard Biener To: gcc-cvs@gcc.gnu.org Subject: [gcc r13-4295] tree-optimization/107865 - ICE with outlining of loops X-Act-Checkin: gcc X-Git-Author: Richard Biener X-Git-Refname: refs/heads/master X-Git-Oldrev: f120196382ac5ac49ec4a60f8abad42f22d45a91 X-Git-Newrev: bcc2449384f2092cbdf5d6ac2357aeabe3212b2e Message-Id: <20221125081905.1E5073943406@sourceware.org> Date: Fri, 25 Nov 2022 08:19:05 +0000 (GMT) List-Id: https://gcc.gnu.org/g:bcc2449384f2092cbdf5d6ac2357aeabe3212b2e commit r13-4295-gbcc2449384f2092cbdf5d6ac2357aeabe3212b2e Author: Richard Biener Date: Fri Nov 25 08:27:42 2022 +0100 tree-optimization/107865 - ICE with outlining of loops The following makes sure to clear loops number of iterations when outlining them as part of a SESE region as can happen with auto-parallelization. The referenced SSA names become stale otherwise. PR tree-optimization/107865 * tree-cfg.cc (move_sese_region_to_fn): Free the number of iterations of moved loops. * gfortran.dg/graphite/pr107865.f90: New testcase. Diff: --- gcc/testsuite/gfortran.dg/graphite/pr107865.f90 | 18 ++++++++++++++++++ gcc/tree-cfg.cc | 2 ++ 2 files changed, 20 insertions(+) diff --git a/gcc/testsuite/gfortran.dg/graphite/pr107865.f90 b/gcc/testsuite/gfortran.dg/graphite/pr107865.f90 new file mode 100644 index 00000000000..6bddb17a1be --- /dev/null +++ b/gcc/testsuite/gfortran.dg/graphite/pr107865.f90 @@ -0,0 +1,18 @@ +! { dg-do compile } +! { dg-options "-O1 -floop-parallelize-all -ftree-parallelize-loops=2" } + + SUBROUTINE FNC (F) + + IMPLICIT REAL (A-H) + DIMENSION F(N) + + DO I = 1, 6 + DO J = 1, 6 + IF (J .NE. I) THEN + F(I) = F(I) + 1 + END IF + END DO + END DO + + RETURN + END diff --git a/gcc/tree-cfg.cc b/gcc/tree-cfg.cc index 28175312afc..0c409b435fb 100644 --- a/gcc/tree-cfg.cc +++ b/gcc/tree-cfg.cc @@ -7859,6 +7859,8 @@ move_sese_region_to_fn (struct function *dest_cfun, basic_block entry_bb, if (bb->loop_father->header == bb) { class loop *this_loop = bb->loop_father; + /* Avoid the need to remap SSA names used in nb_iterations. */ + free_numbers_of_iterations_estimates (this_loop); class loop *outer = loop_outer (this_loop); if (outer == loop /* If the SESE region contains some bbs ending with