From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 1666) id 9F75C3851172; Tue, 11 Oct 2022 13:04:23 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 9F75C3851172 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org; s=default; t=1665493463; bh=RFG4nnWxfWGkHAT5HIwtpjKhlqFrTbWddmfkLWis4rw=; h=From:To:Subject:Date:From; b=oNu5i3jCUzGpnDg5rCB/YfI1TPs6axh8+Pnzgq+Pd37JM8yqetRWwbE2e3saFplPB 6lXuQ93hvcOWheTdyLJE4Gaiovoty1Xi5qnvrmCuOgrT3JGCSOgUFDJEDS7gCA+j6n bW3C7ZyTkqW4rzabUZLUTHuCgnF0lm4j/LS0/yYU= 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 r11-10303] tree-optimization/106112 - fix CSE from wider operation X-Act-Checkin: gcc X-Git-Author: Richard Biener X-Git-Refname: refs/heads/releases/gcc-11 X-Git-Oldrev: a27e5fc76a49b759d271a828f225899434b537e9 X-Git-Newrev: b7878f05553bcf569a987dff8a7ef8b045b8d26c Message-Id: <20221011130423.9F75C3851172@sourceware.org> Date: Tue, 11 Oct 2022 13:04:23 +0000 (GMT) List-Id: https://gcc.gnu.org/g:b7878f05553bcf569a987dff8a7ef8b045b8d26c commit r11-10303-gb7878f05553bcf569a987dff8a7ef8b045b8d26c Author: Richard Biener Date: Tue Jun 28 13:57:29 2022 +0200 tree-optimization/106112 - fix CSE from wider operation The following fixes a mistake in looking up an extended operand in the CSE of a truncated operation. 2022-06-28 Richard Biener PR tree-optimization/106112 * tree-ssa-sccvn.c (valueized_wider_op): Properly extend a constant operand according to its type. * gcc.dg/torture/pr106112.c: New testcase. (cherry picked from commit 2dbb45d6dc0d20dc159b3d8e27ebb6825074827a) Diff: --- gcc/testsuite/gcc.dg/torture/pr106112.c | 16 ++++++++++++++++ gcc/tree-ssa-sccvn.c | 2 +- 2 files changed, 17 insertions(+), 1 deletion(-) diff --git a/gcc/testsuite/gcc.dg/torture/pr106112.c b/gcc/testsuite/gcc.dg/torture/pr106112.c new file mode 100644 index 00000000000..bd7f63c0935 --- /dev/null +++ b/gcc/testsuite/gcc.dg/torture/pr106112.c @@ -0,0 +1,16 @@ +/* { dg-do run } */ + +__INT32_TYPE__ a = 5, b, c, d; +__UINT64_TYPE__ e = 20862985922; +int main() +{ + __UINT32_TYPE__ f = 4294967292; + e = e | f; + c = -1 % ((~f ^ 4294967292) - (e - d)); + b = ~-~e % ~-d; + if (b) + a = 0; + if (a < 1) + __builtin_abort(); + return 0; +} diff --git a/gcc/tree-ssa-sccvn.c b/gcc/tree-ssa-sccvn.c index eaa97566d35..5d773dd3239 100644 --- a/gcc/tree-ssa-sccvn.c +++ b/gcc/tree-ssa-sccvn.c @@ -4843,7 +4843,7 @@ valueized_wider_op (tree wide_type, tree op, bool allow_truncate) /* For constants simply extend it. */ if (TREE_CODE (op) == INTEGER_CST) - return wide_int_to_tree (wide_type, wi::to_wide (op)); + return wide_int_to_tree (wide_type, wi::to_widest (op)); return NULL_TREE; }