From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 1011) id 52BC53858427; Tue, 1 Nov 2022 18:02:37 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 52BC53858427 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org; s=default; t=1667325757; bh=sJnNwV9ir1L42c9swka5COW1qwxX3ItPmaC38EGQQRA=; h=From:To:Subject:Date:From; b=U/I2AD7AV0qtUcoj+iYaT7YNVV0WedWU4Ow4SnAD308Kr4/36lz5+QCD2Pknqo8pn ixB+skHNXqypDeBgM/xkf/P4SMmpoMle15zLqGv5qtom3cUEghjHtNDflsIDxmhP7g 1Y0+tVN1X+r5BiMnIlhjn+CdMI2RUEG4+a3VSeg0= MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset="utf-8" From: Andrew Macleod To: gcc-cvs@gcc.gnu.org Subject: [gcc r13-3597] Make sure ssa-name is valid. X-Act-Checkin: gcc X-Git-Author: Andrew MacLeod X-Git-Refname: refs/heads/master X-Git-Oldrev: e7310e24b1c0ca67b1bb507c1330b2bf39e59e32 X-Git-Newrev: 82b0345f6137b112728590d7c010dcd2cef08514 Message-Id: <20221101180237.52BC53858427@sourceware.org> Date: Tue, 1 Nov 2022 18:02:37 +0000 (GMT) List-Id: https://gcc.gnu.org/g:82b0345f6137b112728590d7c010dcd2cef08514 commit r13-3597-g82b0345f6137b112728590d7c010dcd2cef08514 Author: Andrew MacLeod Date: Tue Nov 1 13:18:33 2022 -0400 Make sure ssa-name is valid. PR tree-optimization/107497 * tree-vrp.cc (remove_unreachable::remove_and_update_globals): Check that ssa-name still exists before accessing it. Diff: --- gcc/tree-vrp.cc | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/gcc/tree-vrp.cc b/gcc/tree-vrp.cc index f0e4d37bef0..39f7eb7a75e 100644 --- a/gcc/tree-vrp.cc +++ b/gcc/tree-vrp.cc @@ -180,7 +180,7 @@ remove_unreachable::remove_and_update_globals (bool final_p) bitmap_copy (dce, all_exports); // Don't attempt to DCE parameters. EXECUTE_IF_SET_IN_BITMAP (all_exports, 0, i, bi) - if (SSA_NAME_IS_DEFAULT_DEF (ssa_name (i))) + if (!ssa_name (i) || SSA_NAME_IS_DEFAULT_DEF (ssa_name (i))) bitmap_clear_bit (dce, i); simple_dce_from_worklist (dce);