search for: cmov

...==30551== by 0x4006009: (within /lib/ld-2.5.so) ==30551== by 0x40084F5: (within /lib/ld-2.5.so) ==30551== by 0x40121D4: (within /lib/ld-2.5.so) ==30551== by 0x400E255: (within /lib/ld-2.5.so) ==30551== by 0x4011C5D: (within /lib/ld-2.5.so) ==30551== by 0x44142E1: (within /lib/i686/cmov/libc-2.5.so) ==30551== by 0x400E255: (within /lib/ld-2.5.so) ==30551== by 0x4414494: __libc_dlopen_mode (in /lib/i686/cmov/libc-2.5.so) ==30551== by 0x43EF73E: __nss_lookup_function (in /lib/i686/cmov/libc-2.5.so) ==30551== by 0x43EF82F: (within /lib/i686/cmov/libc-2.5.so) ==30551==...

...problem. The stack trace they have given me is: *(gdb) run Starting program: /home/alp/ocaml/hlvm/hlvm [Thread debugging using libthread_db enabled] *** stack smashing detected ***: /home/alp/ocaml/hlvm/hlvm terminated [New Thread 0xb7dc56c0 (LWP 25458)] ======= Backtrace: ========= /lib/tls/i686/cmov/libc.so.6(__fortify_fail+0x48)[0xb7ec16d8] /lib/tls/i686/cmov/libc.so.6(__fortify_fail+0x0)[0xb7ec1690] /home/alp/ocaml/hlvm/hlvm(_ZN4llvm3JIT11runFunctionEPNS_8FunctionERKSt6vectorINS_12GenericValueESaIS4_EE+0xc53) [0x852f7d3] ======= Memory map: ======== 08048000-087ce000 r-xp 00000000 08:05 4588...

It's not THAT bad, but: GNU gdb (GDB) 7.0.1-debian Copyright (C) 2009 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html> This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. Type "show copying" and "show warranty" for details. This GDB was

...534== by 0x4005B69: (within /lib/ld-2.5.so) ==31534== by 0x4007995: (within /lib/ld-2.5.so) ==31534== by 0x4010D94: (within /lib/ld-2.5.so) ==31534== by 0x400CFA5: (within /lib/ld-2.5.so) ==31534== by 0x40108ED: (within /lib/ld-2.5.so) ==31534== by 0x450C0A1: (within /lib/tls/i686/cmov/libc-2.5.so) ==31534== by 0x400CFA5: (within /lib/ld-2.5.so) ==31534== by 0x450C254: __libc_dlopen_mode (in /lib/tls/i686/cmov/libc-2.5.so) ==31534== by 0x44E745E: __nss_lookup_function (in /lib/tls/i686/cmov/libc-2.5.so) ==31534== by 0x44E754F: (within /lib/tls/i686/cmov/libc-2.5.so) =...

...ses/gpl.html> This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. Type "show copying" and "show warranty" for details. This GDB was configured as "i486-linux-gnu"... Reading symbols from /lib/i686/cmov/libcrypt.so.1...Reading symbols from /usr/lib/debug/lib/i686/cmov/libcrypt-2.9.so...done. done. Loaded symbols for /lib/i686/cmov/libcrypt.so.1 Reading symbols from /lib/libpam.so.0...done. Loaded symbols for /lib/libpam.so.0 Reading symbols from /lib/i686/cmov/libdl.so.2...Reading symbols from /us...

...ses/gpl.html> This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. Type "show copying" and "show warranty" for details. This GDB was configured as "i486-linux-gnu"... Reading symbols from /lib/i686/cmov/libcrypt.so.1...Reading symbols from /usr/lib/debug/lib/i686/cmov/libcrypt-2.9.so...done. done. Loaded symbols for /lib/i686/cmov/libcrypt.so.1 Reading symbols from /lib/libpam.so.0...done. Loaded symbols for /lib/libpam.so.0 Reading symbols from /lib/i686/cmov/libdl.so.2...Reading symbols from /us...

...en me is: > > *(gdb) run > Starting program: /home/alp/ocaml/hlvm/hlvm > [Thread debugging using libthread_db enabled] > *** stack smashing detected ***: /home/alp/ocaml/hlvm/hlvm terminated > [New Thread 0xb7dc56c0 (LWP 25458)] > ======= Backtrace: ========= > /lib/tls/i686/cmov/libc.so.6(__fortify_fail+0x48)[0xb7ec16d8] > /lib/tls/i686/cmov/libc.so.6(__fortify_fail+0x0)[0xb7ec1690] > /home/alp/ocaml/hlvm/hlvm(_ZN4llvm3JIT11runFunctionEPNS_8FunctionERKSt6vectorINS_12GenericValueESaIS4_EE+0xc53) > [0x852f7d3] > ======= Memory map: ======== > 08048000-087ce000...

...ssdb.tdb): tdb_rec_read bad magic 0x0 at offset=434412 [2009/10/24 19:41:39, 0] passdb/pdb_tdb.c:tdbsam_getsampwnam(919) pdb_getsampwent: Bad struct samu entry returned from TDB! *** glibc detected *** /usr/sbin/smbd: free(): invalid pointer: 0x086875f0 *** ======= Backtrace: ========= /lib/i686/cmov/libc.so.6[0xb7b15624] /lib/i686/cmov/libc.so.6(cfree+0x96)[0xb7b17826] /usr/sbin/smbd[0x81d2f12] /usr/sbin/smbd[0x81d31ab] /usr/sbin/smbd[0x81d32c7] /usr/sbin/smbd[0x81b2e4e] /usr/sbin/smbd(pdb_search_entries+0x1f)[0x81b2ed9] /usr/sbin/smbd[0x8498174] /usr/sbin/smbd(_samr_QueryDomainInfo+0x45)[0x84...

...untu/llvm/src/lib/Target /home/ubuntu/llvm/src/include/llvm/Intrinsics.td -o /home/ubuntu/llvm/obj/lib/VMCore/Debug/Intrinsics.gen.tmp -gen-intrinsic *** glibc detected *** /home/ubuntu/llvm/obj/Debug/bin/tblgen: malloc(): memory corruption: 0x081f8a70 *** ======= Backtrace: ========= /lib/tls/i686/cmov/libc.so.6[0x401b81cd] /lib/tls/i686/cmov/libc.so.6(malloc+0x7f)[0x401b983f] /usr/lib/libstdc++.so.6(_Znwj+0x27)[0x400f24b7] /usr/lib/libstdc++.so.6(_Znaj+0x1d)[0x400f25ed] /usr/lib/libstdc++.so.6(_ZNSt13basic_filebufIcSt11char_traitsIcEE27_M_allocate_internal_bufferEv+0x3c)[0x4009558c] /usr/lib/lib...

I have a Rails 1.2.3 app (due for an update, I know) running on a Mongrel 1.1.4 behind Apache 2.2.3 mod_proxy on Debian 4.0. It keeps hanging up for no reason I can tell. I have tried everything that anyone has ever hinted at being a solution for this problem: - The application doesn''t use MySQL, so setting the connection timeout won''t help. - Using AR not PStore for sessions. -

Hi Chandler, I feel like this conversation has come full circle. So to ask again: how does one force CMOV to be emitted? You suggested “__builtin_unpredictable()” but that gets lost in various optimization passes. Given other architectures have CMOV like instructions, and given the usefulness of the instruction for performance tuning, it seems like a direct intrinsic would be best. What am I missing?...

...imap(imap_fetch_more+0x274) [0x806a4c4] -> imap() [0x8062665] -> imap() [0x806753f] -> imap(client_output+0xeb) [0x806862b] -> imap() [0x810007e] -> imap(io_loop_handler_run+0xd6) [0x80f9aa6] -> imap(io_loop_run+0x20) [0x80f8f20] -> imap(main+0x5b4) [0x8070f24] -> /lib/i686/cmov/libc.so.6(__libc_start_main+0xe6) [0xb75f3c76] -> imap() [0x80603a1] Aug 26 10:26:30 computer dovecot: dovecot: child 23228 (imap) killed with signal 6 (core dumped) Here's the output of dovecot -n: clements at computer:/home/granitemon$ sudo dovecot -n # 1.2.15: /etc/dovecot/dovecot.conf...

...uctions, please see: <http://www.gnu.org/software/gdb/bugs/>... Reading symbols from /usr/dovecot-2/libexec/dovecot/auth...done. Reading symbols from /usr/dovecot-2/lib/dovecot/libdovecot.so.0...done. Loaded symbols for /usr/dovecot-2/lib/dovecot/libdovecot.so.0 Reading symbols from /lib/i686/cmov/libcrypt.so.1...Reading symbols from /usr/lib/debug/lib/i686/cmov/libcrypt-2.11.2.so...done. (no debugging symbols found)...done. Loaded symbols for /lib/i686/cmov/libcrypt.so.1 Reading symbols from /lib/libpam.so.0...(no debugging symbols found)...done. Loaded symbols for /lib/libpam.so.0 Reading...

...are: 13811712 rss: 23953408 rss_rlim: 4294967295 CPU usage: start_time: 1192126999 rtime: 23 utime: 21 stime: 2 cutime:0 cstime: 0 timeout: 0 it_real_value: 0 frequency: 100 Backtrace was generated from '/usr/lib/bug-buddy/<unknown>' Using host libthread_db library "/lib/i686/cmov/libthread_db.so.1". [Thread debugging using libthread_db enabled] [New Thread 0xb7dd66b0 (LWP 22831)] [New Thread 0xb4d97b90 (LWP 22844)] [New Thread 0xb4de8b90 (LWP 22842)] [New Thread 0xb4e39b90 (LWP 22841)] [New Thread 0xb506bb90 (LWP 22840)] [New Thread 0xb50ffb90 (LWP 22839)] [New Thread...

...eetings! I attempted to read a STATA 10 file using the following syntax: library(foreign) data <- read.dta("~/Documents/agestandard/analysis.dta") I got the following error: *** stack smashing detected ***: /usr/lib/R/bin/exec/R terminated ======= Backtrace: ========= /lib/tls/i686/cmov/libc.so.6(__fortify_fail+0x48)[0xb7c13138] /lib/tls/i686/cmov/libc.so.6(__fortify_fail+0x0)[0xb7c130f0] /usr/local/lib/R/site-library/foreign/libs/foreign.so[0xb759c164] /usr/local/lib/R/site-library/foreign/libs/foreign.so(do_readStata+0x0)[0xb759c060] [0x0] ======= Memory map: ======== 08048000-0...

I’m struggling to find cases where __builtin_unpredictable() works at all. Even if we ignore cmp/br into switch conversion, it still doesn’t work: int test_cmov(int left, int right, int *alt) { return __builtin_unpredictable(left < right) ? *alt : 999; } Should generate: test_cmov: movl $999, %eax cmpl %esi, %edi cmovll (%rdx), %eax retq But currently generates: test_cmov: movl $999, %eax cmpl %esi, %edi jge .LBB0_2 movl (%rdx), %eax .LBB0_...

...ow copying" and "show warranty" for details. This GDB was configured as "i486-linux-gnu". For bug reporting instructions, please see: <http://www.gnu.org/software/gdb/bugs/>... Reading symbols from /usr/local/libexec/dovecot/imap...done. Reading symbols from /lib/i686/cmov/libdl.so.2...Reading symbols from /usr/lib/debug/lib/i686/cmov/libdl-2.10.2.so...done. (no debugging symbols found)...done. Loaded symbols for /lib/i686/cmov/libdl.so.2 Reading symbols from /lib/i686/cmov/librt.so.1...Reading symbols from /usr/lib/debug/lib/i686/cmov/librt-2.10.2.so...done. (no deb...

...This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. Type "show copying" and "show warranty" for details. This GDB was configured as "i486-linux-gnu"... Using host libthread_db library "/lib/i686/cmov/libthread_db.so.1". Reading symbols from /lib/i686/cmov/libdl.so.2...Reading symbols from /usr/lib/debug/lib/i686/cmov/libdl-2.7.so...done. done. Loaded symbols for /lib/i686/cmov/libdl.so.2 Reading symbols from /lib/i686/cmov/libc.so.6...Reading symbols from /usr/lib/debug/lib/i686/cmov/libc-...

...David Zarzycki via llvm-dev <llvm-dev at lists.llvm.org <mailto:llvm-dev at lists.llvm.org>> wrote: > Hi Chandler, > > The data-invariant feature sounds great but what about the general case? When performance tuning code, people sometimes need the ability to reliably generate CMOV, and right now the best advice is either “use inline assembly” or “keep refactoring until CMOV is emited” (and hope that future compilers continue to generate CMOV). > > Given that a patch already exists to reliably generate CMOV, are there any good arguments against adding the feature? >...

...e ideas based on the output? This is with R 2.4.1 on Ubuntu, and also occurs with R 2.4.1 on Mac OS X (gcc 3.4.6 and 3.4.2 respectively). Many thanks, Emmanuel *** glibc detected *** /usr/lib/R/bin/exec/R: malloc(): memory corruption: 0xb7c42480 *** ======= Backtrace: ========= /lib/tls/i686/cmov/libc.so.6[0xb7b781cd] /lib/tls/i686/cmov/libc.so.6(malloc+0x7f)[0xb7b7983f] /usr/lib/atlas/sse2/libblas.so.3(ATL_dsyr+0x7f)[0xb77ec16f] ======= Memory map: ======== 08048000-08049000 r-xp 00000000 08:03 967805 /usr/lib/R/bin/exec/R 08049000-0804a000 rw-p 00000000 08:03 967805 /usr/lib/R/bin...