From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 1666) id CD70F3858408; Tue, 24 Jan 2023 15:22:55 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org CD70F3858408 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org; s=default; t=1674573775; bh=/8eI6GjJsWBT5Oa2IRTMnq0CsC6UPLktIkb0os/wOnk=; h=From:To:Subject:Date:From; b=STeCfpTWftqrHhbCylrfHGRc3byIn3BsP3RfSvVcYDKy8Y5u/75eWOr2aIj4CCv3V WcFpJtjawVoMeiTFevq2Xouu5A0+EV9X+1KYNM3pRME2xY8xHFoHHU/fQfdO6q1BtV Ml5png33kJFRL8hR8HLvvVh3FA1wTnjkczN2hzxs= 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 r11-10483] tree-optimization/107554 - fix ICE in stlen optimization X-Act-Checkin: gcc X-Git-Author: Richard Biener X-Git-Refname: refs/heads/releases/gcc-11 X-Git-Oldrev: 28fe903730d2c6e424732184ab2d8b1e7d46db6c X-Git-Newrev: 23a9270c999a24cdc0b716e832e5f16bb13db891 Message-Id: <20230124152255.CD70F3858408@sourceware.org> Date: Tue, 24 Jan 2023 15:22:55 +0000 (GMT) List-Id: https://gcc.gnu.org/g:23a9270c999a24cdc0b716e832e5f16bb13db891 commit r11-10483-g23a9270c999a24cdc0b716e832e5f16bb13db891 Author: Richard Biener Date: Fri Nov 11 14:28:52 2022 +0100 tree-optimization/107554 - fix ICE in stlen optimization The following fixes a wrongly typed variable causing an ICE. PR tree-optimization/107554 * tree-ssa-strlen.c (strlen_pass::count_nonzero_bytes): Use unsigned HOST_WIDE_INT type for the strlen. * gcc.dg/pr107554.c: New testcase. Co-Authored-By: Nikita Voronov (cherry picked from commit 81de4037454275f8ed6d858fbc129e832c6147ef) Diff: --- gcc/testsuite/gcc.dg/pr107554.c | 12 ++++++++++++ gcc/tree-ssa-strlen.c | 2 +- 2 files changed, 13 insertions(+), 1 deletion(-) diff --git a/gcc/testsuite/gcc.dg/pr107554.c b/gcc/testsuite/gcc.dg/pr107554.c new file mode 100644 index 00000000000..8bbe6b07ae9 --- /dev/null +++ b/gcc/testsuite/gcc.dg/pr107554.c @@ -0,0 +1,12 @@ +/* { dg-do compile } */ +/* { dg-options "-O -foptimize-strlen" } */ + +#define ELEMS 0x40000000 + +int a[ELEMS]; +int b[ELEMS]; + +int main() +{ + __builtin_memcpy(a, b, ELEMS*sizeof(int)); +} diff --git a/gcc/tree-ssa-strlen.c b/gcc/tree-ssa-strlen.c index cccd4a06771..9f317a190ee 100644 --- a/gcc/tree-ssa-strlen.c +++ b/gcc/tree-ssa-strlen.c @@ -4523,7 +4523,7 @@ count_nonzero_bytes (tree exp, unsigned HOST_WIDE_INT offset, /* Compute the number of leading nonzero bytes in the representation and update the minimum and maximum. */ - unsigned n = prep ? strnlen (prep, nbytes) : nbytes; + unsigned HOST_WIDE_INT n = prep ? strnlen (prep, nbytes) : nbytes; if (n < lenrange[0]) lenrange[0] = n;