Date: Fri, 22 May 2020 18:23:37 +0000 From: bugzilla-noreply@freebsd.org To: bugs@FreeBSD.org Subject: [Bug 246630] stable/11 regression: base.txz reproducibility depends on number of cpu cores Message-ID: <bug-246630-227-Y4okZmveRr@https.bugs.freebsd.org/bugzilla/> In-Reply-To: <bug-246630-227@https.bugs.freebsd.org/bugzilla/> References: <bug-246630-227@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D246630 --- Comment #7 from Conrad Meyer <cem@freebsd.org> --- Diff seems to start here (I reordered lines for clarity): =E2=94=82 @@ -63992,183658 +63992,183673 @@ ... =E2=94=82 - 43c7b5: 49 89 cd mov %rcx,%r13 =E2=94=82 + 43c7b5: 49 89 cf mov %rcx,%r15 // ^^ r13 -> r15 =E2=94=82 - 43c7b8: 49 29 c5 sub %rax,%r13 =E2=94=82 + 43c7b8: 49 29 c7 sub %rax,%r15 =E2=94=82 - 43c7bb: 4c 89 ec mov %r13,%rsp =E2=94=82 + 43c7bb: 4c 89 fc mov %r15,%rsp ... =E2=94=82 - 43c803: 4c 63 c2 movslq %edx,%r8 =E2=94=82 + 43c803: 4c 63 da movslq %edx,%r11 // ^^ r8 -> 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 These particular changes are not the ones that affect code *size* (those mu= st be later), but do show reproducibility problems. --=20 You are receiving this mail because: You are the assignee for the bug.=
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