From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 48) id 10B5E3857827; Wed, 14 Jul 2021 06:07:25 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 10B5E3857827 From: "rguenth at gcc dot gnu.org" To: gcc-bugs@gcc.gnu.org Subject: [Bug inline-asm/101438] Compiler hang on inline asm with local register and VLA operands Date: Wed, 14 Jul 2021 06:07:24 +0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: gcc X-Bugzilla-Component: inline-asm X-Bugzilla-Version: 11.1.0 X-Bugzilla-Keywords: accepts-invalid, compile-time-hog, ra X-Bugzilla-Severity: normal X-Bugzilla-Who: rguenth at gcc dot gnu.org X-Bugzilla-Status: NEW X-Bugzilla-Resolution: X-Bugzilla-Priority: P3 X-Bugzilla-Assigned-To: unassigned at gcc dot gnu.org X-Bugzilla-Target-Milestone: --- X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: keywords bug_status cf_reconfirmed_on everconfirmed Message-ID: In-Reply-To: References: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: http://gcc.gnu.org/bugzilla/ Auto-Submitted: auto-generated MIME-Version: 1.0 X-BeenThere: gcc-bugs@gcc.gnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Gcc-bugs mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 14 Jul 2021 06:07:25 -0000 https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D101438 Richard Biener changed: What |Removed |Added ---------------------------------------------------------------------------- Keywords| |accepts-invalid, | |compile-time-hog, ra Status|UNCONFIRMED |NEW Last reconfirmed| |2021-07-14 Ever confirmed|0 |1 --- Comment #1 from Richard Biener --- At -O0 we get t3.c: In function 'main': t3.c:21:5: error: 'asm' operand has impossible constraints 21 | __asm__ ("" | ^~~~~~~ likely because there's not enough registers to pass in 'arr' (and we need a= FP to allocate arr). At -O1 it looks like we think we can manage but do not m= ake progress reloading. So confirmed, a diagnostic would be nice.=