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From: "amacleod at redhat dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/108684] [12/13 Regression] ICE: verify_ssa
 failed
Date: Tue, 07 Feb 2023 18:39:03 +0000
X-Bugzilla-Reason: CC
X-Bugzilla-Type: changed
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X-Bugzilla-Product: gcc
X-Bugzilla-Component: tree-optimization
X-Bugzilla-Version: 13.0
X-Bugzilla-Keywords: ice-on-valid-code, inline-asm
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X-Bugzilla-Who: amacleod at redhat dot com
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Message-ID: <bug-108684-4-LjUBRY7XSU@http.gcc.gnu.org/bugzilla/>
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D108684

--- Comment #6 from Andrew Macleod <amacleod at redhat dot com> ---
diff --git a/gcc/tree-ssa-dce.cc b/gcc/tree-ssa-dce.cc
index b2fe9f4f55e..752785541e4 100644
--- a/gcc/tree-ssa-dce.cc
+++ b/gcc/tree-ssa-dce.cc
@@ -2140,6 +2140,7 @@ simple_dce_from_worklist (bitmap worklist)
        remove_phi_node (&gsi, true);
       else
        {
+         unlink_stmt_vdef (t);
          gsi_remove (&gsi, true);
          release_defs (t);
        }


Fixes the issue...  huh     how long has THAT been there=