Your message dated Wed, 02 Jun 2021 22:04:11 +0000
with message-id <[email protected]>
and subject line Bug#988965: fixed in llvm-toolchain-12 1:12.0.1~+rc1-1
has caused the Debian Bug report #988965,
regarding llvm-toolchain-12: llvm 12 generates bad human-readable IR output on
mipsel
to be marked as done.
This means that you claim that the problem has been dealt with.
If this is not the case it is now your responsibility to reopen the
Bug report if necessary, and/or fix the problem forthwith.
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--
988965: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=988965
Debian Bug Tracking System
Contact [email protected] with problems
--- Begin Message ---
Source: llvm-toolchain-12
Version: 1:12.0.0-3
Severity: important
X-Debbugs-Cc: [email protected], [email protected]
Dear Maintainer,
LLVM 12's ability to emit IR in human-readable form is corrupted on mipsel
32-bit:
$ cat main.c
#include <string.h>
int main() {
char *a = NULL;
char *b = NULL;
memcpy(a, b, 0);
}
$ clang-12 -S -emit-llvm main.c
$ grep 00G8 main.ll
call void @llvm.memcpy.00G8.00G8.G32(i8* align 1 %3, i8* align 1 %4, i32 0,
i1 false)
declare void @llvm.memcpy.00G8.00G8.G32(i8* noalias nocapture writeonly, i8*
noalias nocapture readonly, i32, i1 immarg) #1
00G8 is not correct, it should be p0i8 and suggests miscompilation somewhere as
the source code of the function does not contain these characters:
https://github.com/llvm/llvm-project/blob/5b6cae5524905bc43cfc21a515f828528d1f2e68/llvm/lib/IR/Function.cpp#L777
This additionally makes some rustc tests fail.
LLVM 11 is fine.
I filed a Debian bug for now because I could not find any other LLVM 12 mipsel
binaries to test with online; neither upstream nor Fedora distribute these.
Please do forward upstream if you are confident this is not a Debian-specific
issue.
X
-- System Information:
Debian Release: 11.0
APT prefers testing
APT policy: (990, 'testing'), (500, 'unstable-debug'), (500,
'testing-security'), (500, 'testing-debug'), (500, 'stable'), (300,
'unstable'), (100, 'experimental'), (1, 'experimental-debug')
Architecture: amd64 (x86_64)
Foreign Architectures: i386
Kernel: Linux 5.9.0-4-amd64 (SMP w/4 CPU threads)
Locale: LANG=en_GB.UTF-8, LC_CTYPE=en_GB.UTF-8 (charmap=UTF-8),
LANGUAGE=en_GB:en
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled
--- End Message ---
--- Begin Message ---
Source: llvm-toolchain-12
Source-Version: 1:12.0.1~+rc1-1
Done: Sylvestre Ledru <[email protected]>
We believe that the bug you reported is fixed in the latest version of
llvm-toolchain-12, which is due to be installed in the Debian FTP archive.
A summary of the changes between this version and the previous one is
attached.
Thank you for reporting the bug, which will now be closed. If you
have further comments please address them to [email protected],
and the maintainer will reopen the bug report if appropriate.
Debian distribution maintenance software
pp.
Sylvestre Ledru <[email protected]> (supplier of updated llvm-toolchain-12
package)
(This message was generated automatically at their request; if you
believe that there is a problem with it please contact the archive
administrators by mailing [email protected])
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256
Format: 1.8
Date: Wed, 02 Jun 2021 20:20:02 +0200
Source: llvm-toolchain-12
Architecture: source
Version: 1:12.0.1~+rc1-1
Distribution: unstable
Urgency: medium
Maintainer: LLVM Packaging Team <[email protected]>
Changed-By: Sylvestre Ledru <[email protected]>
Closes: 988965
Changes:
llvm-toolchain-12 (1:12.0.1~+rc1-1) unstable; urgency=medium
.
[ John Paul Adrian Glaubitz ]
* Add upstream patch D98574 to fix clang macro definitions on sparc64
* Add upstream patch D98575 to fix 32-bit compiler-rt build on sparc64
.
[ Sylvestre Ledru ]
* backport D101773 to fix an llvm ir issue on mipsel
in mips/mips-D101773-reloc.patch
thanks to Ximin Luo
(Closes: #988965)
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