From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 1851) id 0AE383839C70; Mon, 16 Aug 2021 08:25:02 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 0AE383839C70 Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit From: Martin Liska To: gcc-cvs@gcc.gnu.org Subject: [gcc(refs/users/marxin/heads/backport-11)] ipa: ICF should check SSA_NAME_IS_DEFAULT_DEF X-Act-Checkin: gcc X-Git-Author: Martin Liska X-Git-Refname: refs/users/marxin/heads/backport-11 X-Git-Oldrev: fbe246620e2fa5b5968718837ae4c12fdb85ba39 X-Git-Newrev: 5b1bcb10b2cc6c93b06d22da0a044a6a6f362f0b Message-Id: <20210816082502.0AE383839C70@sourceware.org> Date: Mon, 16 Aug 2021 08:25:02 +0000 (GMT) X-BeenThere: gcc-cvs@gcc.gnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Gcc-cvs mailing list List-Unsubscribe: , List-Archive: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 16 Aug 2021 08:25:02 -0000 https://gcc.gnu.org/g:5b1bcb10b2cc6c93b06d22da0a044a6a6f362f0b commit 5b1bcb10b2cc6c93b06d22da0a044a6a6f362f0b Author: Martin Liska Date: Fri Aug 13 12:35:47 2021 +0200 ipa: ICF should check SSA_NAME_IS_DEFAULT_DEF PR ipa/100600 gcc/ChangeLog: * ipa-icf-gimple.c (func_checker::compare_ssa_name): Do not consider equal SSA_NAMEs when one is a param. gcc/testsuite/ChangeLog: * gcc.dg/ipa/pr100600.c: New test. Diff: --- gcc/ipa-icf-gimple.c | 3 +++ gcc/testsuite/gcc.dg/ipa/pr100600.c | 22 ++++++++++++++++++++++ 2 files changed, 25 insertions(+) diff --git a/gcc/ipa-icf-gimple.c b/gcc/ipa-icf-gimple.c index edf5f025627..cf0262621be 100644 --- a/gcc/ipa-icf-gimple.c +++ b/gcc/ipa-icf-gimple.c @@ -96,6 +96,9 @@ func_checker::compare_ssa_name (const_tree t1, const_tree t2) unsigned i1 = SSA_NAME_VERSION (t1); unsigned i2 = SSA_NAME_VERSION (t2); + if (SSA_NAME_IS_DEFAULT_DEF (t1) != SSA_NAME_IS_DEFAULT_DEF (t2)) + return false; + if (m_source_ssa_names[i1] == -1) m_source_ssa_names[i1] = i2; else if (m_source_ssa_names[i1] != (int) i2) diff --git a/gcc/testsuite/gcc.dg/ipa/pr100600.c b/gcc/testsuite/gcc.dg/ipa/pr100600.c new file mode 100644 index 00000000000..8a3d0e16e7e --- /dev/null +++ b/gcc/testsuite/gcc.dg/ipa/pr100600.c @@ -0,0 +1,22 @@ +/* PR ipa/100600 */ +/* { dg-do compile } */ +/* { dg-options "-O2" } */ + +int a, b, c; +long d(long x, long e, long f, long g) { + long h, i; + for (; h < e; h++) { + i = f; + for (; i < g; i++) + c = b + a; + } + return h + i; +} + +long j(long x, long e, long y, long g) { + long h, i; + for (; h < e; h++) + for (; i < g; i++) + c = b + a; + return h + i; +}