public inbox for gcc-cvs@sourceware.org
help / color / mirror / Atom feed
From: Richard Biener <rguenth@gcc.gnu.org>
To: gcc-cvs@gcc.gnu.org
Subject: [gcc r13-2640] middle-end/106909 - CTRL altering flag after folding
Date: Tue, 13 Sep 2022 08:52:42 +0000 (GMT)	[thread overview]
Message-ID: <20220913085242.83166385116F@sourceware.org> (raw)

https://gcc.gnu.org/g:2c867232df70d3de304714906b4198ecb262eb32

commit r13-2640-g2c867232df70d3de304714906b4198ecb262eb32
Author: Richard Biener <rguenther@suse.de>
Date:   Tue Sep 13 08:59:41 2022 +0200

    middle-end/106909 - CTRL altering flag after folding
    
    The following makes sure to clear the CTRL altering flag when
    folding emits a __builitin_unreachable in place of a virtual call
    which now might become a trap.
    
            PR middle-end/106909
            * gimple-fold.cc (gimple_fold_call): Clear the ctrl-altering
            flag of a unreachable call.

Diff:
---
 gcc/gimple-fold.cc | 1 +
 1 file changed, 1 insertion(+)

diff --git a/gcc/gimple-fold.cc b/gcc/gimple-fold.cc
index a1704784bc9..9055cd8982d 100644
--- a/gcc/gimple-fold.cc
+++ b/gcc/gimple-fold.cc
@@ -5512,6 +5512,7 @@ gimple_fold_call (gimple_stmt_iterator *gsi, bool inplace)
 		{
 		  location_t loc = gimple_location (stmt);
 		  gimple *new_stmt = gimple_build_builtin_unreachable (loc);
+		  gimple_call_set_ctrl_altering (new_stmt, false);
 		  /* If the call had a SSA name as lhs morph that into
 		     an uninitialized value.  */
 		  if (lhs && TREE_CODE (lhs) == SSA_NAME)

                 reply	other threads:[~2022-09-13  8:52 UTC|newest]

Thread overview: [no followups] expand[flat|nested]  mbox.gz  Atom feed

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20220913085242.83166385116F@sourceware.org \
    --to=rguenth@gcc.gnu.org \
    --cc=gcc-cvs@gcc.gnu.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).