From owner-freebsd-bugs@freebsd.org Fri May 22 18:29:33 2020 Return-Path: Delivered-To: freebsd-bugs@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id 8BF962D893D for ; Fri, 22 May 2020 18:29:33 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from mailman.nyi.freebsd.org (unknown [127.0.1.3]) by mx1.freebsd.org (Postfix) with ESMTP id 49TFQ53JW5z3RlC for ; Fri, 22 May 2020 18:29:33 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: by mailman.nyi.freebsd.org (Postfix) id 6FC6B2D8B04; Fri, 22 May 2020 18:29:33 +0000 (UTC) Delivered-To: bugs@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id 6F90A2D8A9B for ; Fri, 22 May 2020 18:29:33 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from mxrelay.nyi.freebsd.org (mxrelay.nyi.freebsd.org [IPv6:2610:1c1:1:606c::19:3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "mxrelay.nyi.freebsd.org", Issuer "Let's Encrypt Authority X3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 49TFQ52Q7sz3RdN for ; Fri, 22 May 2020 18:29:33 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from kenobi.freebsd.org (kenobi.freebsd.org [IPv6:2610:1c1:1:606c::50:1d]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (Client did not present a certificate) by mxrelay.nyi.freebsd.org (Postfix) with ESMTPS id 4A07322DAA for ; Fri, 22 May 2020 18:29:33 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from kenobi.freebsd.org ([127.0.1.5]) by kenobi.freebsd.org (8.15.2/8.15.2) with ESMTP id 04MITX04012709 for ; Fri, 22 May 2020 18:29:33 GMT (envelope-from bugzilla-noreply@freebsd.org) Received: (from www@localhost) by kenobi.freebsd.org (8.15.2/8.15.2/Submit) id 04MITX5d012705 for bugs@FreeBSD.org; Fri, 22 May 2020 18:29:33 GMT (envelope-from bugzilla-noreply@freebsd.org) X-Authentication-Warning: kenobi.freebsd.org: www set sender to bugzilla-noreply@freebsd.org using -f From: bugzilla-noreply@freebsd.org To: bugs@FreeBSD.org Subject: [Bug 246630] stable/11 regression: base.txz reproducibility depends on number of cpu cores Date: Fri, 22 May 2020 18:29:33 +0000 X-Bugzilla-Reason: AssignedTo X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: Base System X-Bugzilla-Component: bin X-Bugzilla-Version: Unspecified X-Bugzilla-Keywords: X-Bugzilla-Severity: Affects Some People X-Bugzilla-Who: emaste@freebsd.org X-Bugzilla-Status: New X-Bugzilla-Resolution: X-Bugzilla-Priority: --- X-Bugzilla-Assigned-To: bugs@FreeBSD.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: Message-ID: In-Reply-To: References: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: https://bugs.freebsd.org/bugzilla/ Auto-Submitted: auto-generated MIME-Version: 1.0 X-BeenThere: freebsd-bugs@freebsd.org X-Mailman-Version: 2.1.33 Precedence: list List-Id: Bug reports List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 22 May 2020 18:29:33 -0000 https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D246630 --- Comment #10 from Ed Maste --- Here is where the interesting parts start - I've rearranged the diff -/+ to make it easier to see where differences exist: =E2=94=82 - 43c803: 4c 63 c2 movslq %edx,%r8 =E2=94=82 + 43c803: 4c 63 da movslq %edx,%r11 =E2=94=82 - 43c806: 49 c1 e0 03 shl $0x3,%r8 =E2=94=82 + 43c806: 49 c1 e3 03 shl $0x3,%r11 =E2=94=82 - 43c80a: 4c 03 05 e7 7a bc 00 add 0xbc7ae7(%rip),%r8 = # 0x10042f8 =E2=94=82 + 43c80a: 4c 03 1d e7 7a bc 00 add 0xbc7ae7(%rip),%r11 = # 0x10042f8 =E2=94=82 - 43c811: 4c 89 05 d0 7a bc 00 mov %r8,0xbc7ad0(%rip) = # 0x10042e8 =E2=94=82 + 43c811: 4c 89 1d d0 7a bc 00 mov %r11,0xbc7ad0(%rip) = # 0x10042e8 =E2=94=82 - 43c818: 4c 3b 05 d1 7a bc 00 cmp 0xbc7ad1(%rip),%r8 = # 0x10042f0 =E2=94=82 + 43c818: 4c 3b 1d d1 7a bc 00 cmp 0xbc7ad1(%rip),%r11 = # 0x10042f0 =E2=94=82 43c81f: 76 07 jbe 0x43c828 =E2=94=82 - 43c821: 4c 89 05 c8 7a bc 00 mov %r8,0xbc7ac8(%rip) = # 0x10042f0 =E2=94=82 + 43c821: 4c 89 1d c8 7a bc 00 mov %r11,0xbc7ac8(%rip) = # 0x10042f0 =E2=94=82 43c828: 48 b8 00 00 00 00 01 mov $0x100000000,%rax =E2=94=82 43c82f: 00 00 00 =E2=94=82 43c832: 49 01 c6 add %rax,%r14 =E2=94=82 43c835: 49 c1 fe 20 sar $0x20,%r14 =E2=94=82 43c839: 4c 01 f3 add %r14,%rbx =E2=94=82 43c83c: eb 03 jmp 0x43c841 =E2=94=82 - 43c83e: 45 31 c0 xor %r8d,%r8d =E2=94=82 + 43c83e: 45 31 db xor %r11d,%r11d =E2=94=82 - 43c841: 44 8a 3b mov (%rbx),%r15b =E2=94=82 + 43c841: 8a 0b mov (%rbx),%cl =E2=94=82 - 43c844: 45 31 c9 xor %r9d,%r9d =E2=94=82 + 43c843: 45 31 c9 xor %r9d,%r9d =E2=94=82 - 43c847: 45 84 ff test %r15b,%r15b =E2=94=82 + 43c846: 84 c9 test %cl,%cl =E2=94=82 + 43c848: 4c 89 ad 00 ff ff ff mov %r13,-0x100(%rbp) =E2=94=82 - 43c84a: 74 60 je 0x43c8ac =E2=94=82 + 43c84f: 74 4f je 0x43c8a0 =E2=94=82 - 43c84c: 45 31 f6 xor %r14d,%r14d =E2=94=82 + 43c851: 45 31 e4 xor %r12d,%r12d =E2=94=82 - 43c84f: 48 b8 01 00 00 00 89 mov $0x1288900000001,%rax =E2=94=82 - 43c856: 28 01 00 =E2=94=82 + 43c854: 48 b8 01 00 00 00 89 mov $0x1288900000001,%rax =E2=94=82 + 43c85b: 28 01 00 =E2=94=82 - 43c859: 0f 1f 80 00 00 00 00 nopl 0x0(%rax) =E2=94=82 + 43c85e: 66 90 xchg %ax,%ax =E2=94=82 43c860: ba 01 00 00 00 mov $0x1,%edx =E2=94=82 - 43c865: 44 89 f9 mov %r15d,%ecx =E2=94=82 - 43c868: 48 d3 e2 shl %cl,%rdx =E2=94=82 + 43c865: 48 d3 e2 shl %cl,%rdx =E2=94=82 - 43c86b: 41 80 ff 3f cmp $0x3f,%r15b =E2=94=82 + 43c868: 80 f9 3f cmp $0x3f,%cl =E2=94=82 - 43c86f: 0f 87 73 01 00 00 ja 0x43c9e8 =E2=94=82 + 43c86b: 0f 87 60 01 00 00 ja 0x43c9d1 =E2=94=82 - 43c875: 48 21 c2 and %rax,%rdx =E2=94=82 + 43c871: 48 21 c2 and %rax,%rdx =E2=94=82 - 43c878: 0f 84 6a 01 00 00 je 0x43c9e8 =E2=94=82 + 43c874: 0f 84 57 01 00 00 je 0x43c9d1 =E2=94=82 - 43c87e: 47 88 7c 35 01 mov %r15b,0x1(%r13,%r14,= 1) =E2=94=82 + 43c87a: 43 88 4c 27 01 mov %cl,0x1(%r15,%r12,1) =E2=94=82 - 43c883: 43 c6 44 35 02 00 movb $0x0,0x2(%r13,%r14,1) =E2=94=82 + 43c87f: 43 c6 44 27 02 00 movb $0x0,0x2(%r15,%r12,1) =E2=94=82 - 43c889: 46 0f b6 7c 33 01 movzbl 0x1(%rbx,%r14,1),%r1= 5d =E2=94=82 + 43c885: 42 0f b6 4c 23 01 movzbl 0x1(%rbx,%r12,1),%ecx =E2=94=82 - 43c88f: 49 83 c6 01 add $0x1,%r14 =E2=94=82 + 43c88b: 49 83 c4 01 add $0x1,%r12 =E2=94=82 + 43c88f: 84 c9 test %cl,%cl =E2=94=82 - 43c803: 4c 63 c2 movslq %edx,%r8 =E2=94=82 + 43c803: 4c 63 da movslq %edx,%r11 =E2=94=82 - 43c806: 49 c1 e0 03 shl $0x3,%r8 =E2=94=82 + 43c806: 49 c1 e3 03 shl $0x3,%r11 =E2=94=82 - 43c80a: 4c 03 05 e7 7a bc 00 add 0xbc7ae7(%rip),%r8 = # 0x10042f8 =E2=94=82 + 43c80a: 4c 03 1d e7 7a bc 00 add 0xbc7ae7(%rip),%r11 = # 0x10042f8 =E2=94=82 - 43c811: 4c 89 05 d0 7a bc 00 mov %r8,0xbc7ad0(%rip) = # 0x10042e8 =E2=94=82 + 43c811: 4c 89 1d d0 7a bc 00 mov %r11,0xbc7ad0(%rip) = # 0x10042e8 =E2=94=82 - 43c818: 4c 3b 05 d1 7a bc 00 cmp 0xbc7ad1(%rip),%r8 = # 0x10042f0 =E2=94=82 + 43c818: 4c 3b 1d d1 7a bc 00 cmp 0xbc7ad1(%rip),%r11 = # 0x10042f0 =E2=94=82 43c81f: 76 07 jbe 0x43c828 =E2=94=82 - 43c821: 4c 89 05 c8 7a bc 00 mov %r8,0xbc7ac8(%rip) = # 0x10042f0 =E2=94=82 + 43c821: 4c 89 1d c8 7a bc 00 mov %r11,0xbc7ac8(%rip) = # 0x10042f0 =E2=94=82 - 43c865: 44 89 f9 mov %r15d,%ecx =E2=94=82 - 43c868: 48 d3 e2 shl %cl,%rdx =E2=94=82 + 43c865: 48 d3 e2 shl %cl,%rdx =E2=94=82 - 43c86b: 41 80 ff 3f cmp $0x3f,%r15b =E2=94=82 + 43c868: 80 f9 3f cmp $0x3f,%cl =E2=94=82 - 43c86f: 0f 87 73 01 00 00 ja 0x43c9e8 =E2=94=82 + 43c86b: 0f 87 60 01 00 00 ja 0x43c9d1 =E2=94=82 - 43c875: 48 21 c2 and %rax,%rdx =E2=94=82 + 43c871: 48 21 c2 and %rax,%rdx =E2=94=82 - 43c878: 0f 84 6a 01 00 00 je 0x43c9e8 =E2=94=82 + 43c874: 0f 84 57 01 00 00 je 0x43c9d1 =E2=94=82 - 43c87e: 47 88 7c 35 01 mov %r15b,0x1(%r13,%r14,= 1) =E2=94=82 + 43c87a: 43 88 4c 27 01 mov %cl,0x1(%r15,%r12,1) I have trouble figuring out how core counts would affect the compiler in th= is way, though. --=20 You are receiving this mail because: You are the assignee for the bug.=