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Date: Wed, 17 May 2023 16:10:19 +0200 Message-Id: <20230517141020.464106-1-aldyh@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.1 on 10.11.54.1 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com X-Spam-Status: No, score=-11.7 required=5.0 tests=BAYES_00, DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, DKIM_VALID_EF, GIT_PATCH_0, RCVD_IN_DNSWL_NONE, RCVD_IN_MSPIKE_H2, SPF_HELO_NONE, SPF_NONE, TXREP, T_SCC_BODY_TEXT_LINE autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on server2.sourceware.org X-BeenThere: gcc-patches@gcc.gnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Gcc-patches mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-Patchwork-Original-From: Aldy Hernandez via Gcc-patches From: Aldy Hernandez Reply-To: Aldy Hernandez Errors-To: gcc-patches-bounces+ouuuleilei=gmail.com@gcc.gnu.org Sender: "Gcc-patches" X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1766150847404967591?= X-GMAIL-MSGID: =?utf-8?q?1766150847404967591?= The unsupported_range class is provided for completness sake. It is a way to set VARYING/UNDEFINED ranges for unsupported ranges (currently anything not float, integer, or pointer). You can't do anything with them, except set_varying, and set_undefined. We will trap on any other operation. This patch provides a way to copy them, just in case they creep in. This could happen in IPA under certain circumstances. gcc/ChangeLog: * value-range.cc (vrange::operator=): Add a stub to copy unsupported ranges. * value-range.h (is_a ): New. (Value_Range::operator=): Support copying unsupported ranges. --- gcc/value-range.cc | 5 ++++- gcc/value-range.h | 12 ++++++++++++ 2 files changed, 16 insertions(+), 1 deletion(-) diff --git a/gcc/value-range.cc b/gcc/value-range.cc index 93c44a68365..45b1e655967 100644 --- a/gcc/value-range.cc +++ b/gcc/value-range.cc @@ -203,7 +203,10 @@ vrange::operator= (const vrange &src) else if (is_a (src)) as_a (*this) = as_a (src); else - gcc_unreachable (); + { + gcc_checking_assert (is_a (src)); + m_kind = src.m_kind; + } return *this; } diff --git a/gcc/value-range.h b/gcc/value-range.h index 0da2a42764a..ab982d18402 100644 --- a/gcc/value-range.h +++ b/gcc/value-range.h @@ -460,6 +460,13 @@ is_a (vrange &v) return v.m_discriminator == VR_FRANGE; } +template <> +inline bool +is_a (vrange &v) +{ + return v.m_discriminator == VR_UNKNOWN; +} + // For resizable ranges, resize the range up to HARD_MAX_RANGES if the // NEEDED pairs is greater than the current capacity of the range. @@ -624,6 +631,11 @@ Value_Range::operator= (const vrange &r) m_frange = as_a (r); m_vrange = &m_frange; } + else if (is_a (r)) + { + m_unsupported = as_a (r); + m_vrange = &m_unsupported; + } else gcc_unreachable ();