Gcc lto bugCreated attachment 97520 LTO patch Hello, I've been testing GCC 4.9 for a virtual gentoo machine and I noticed that you us flatten attribute in source code. In case of src/sna/sna_glyphs.c flatten functions, inliner inlines about 3.3M functions and crashes because of no free memory (I have 8GB memory).Introduction. This is the second post in our Firmware Code Size Optimization series. Last time, we talked about measuring code size as a precondition to improving it.Now we'll leap from planning into action! In this post, we will review compiler options that we can use to reduce firmware code size.Subject: Re: Bug#914543: meson adds both -fPIE and -fPIC options in LTO compiles with gcc-8 Date: Sun, 13 Jan 2019 01:23:44 +0100 [ Message part 1 (text/plain, inline)]Nov 20, 2017 · Bug 83061 - -Wmaybe-uninitialized warnings in gcc/lto/lto-object.c Attachments Add an attachment (proposed patch, testcase, etc.) Note You need to log in before you can comment on or make changes to this bug. GCC 10 Link-Time Optimization Benchmarks On AMD Threadripper. Written by Michael Larabel in Software on 7 January 2020. Page 2 of 4. 30 Comments. With HPC Challenge there were some minor improvements in performance particularly when pairing LTO with the "-fwhole-program" option. For FFTW the results were mixed with LTO leading to lower ...But unfortunately these kind of bugs have been reported like, memory corruption with *crafted* ELF file. https://www.google.com/search?q=binutils+crafted+elf+cve From the perspective of attackers, they can prevent some kind of services by sending crafted ELF file through network. i.e. Denial of Service. Please consider our request of fixing.Compare your own system(s) to this result file with the Phoronix Test Suite by running the command: phoronix-test-suite benchmark 2204039-NE-NVMETEST529When lto is disabled, this function is pretty simple and won't use stack, so frame pointer register isn't going to be needed. Everything is fine. It's allowed to use r7 as above ldr instruction. When lto is enabled, the function svcThreadCreate will be inlined into function osThreadCreate by lto.Whole-program Analysis via Link-Time Optimization (LTO) ¶ You can enable GCC's "link time optimization" feature by passing -flto. When this is enabled, gcc adds extra sections to the compiled .o file containing the SSA-Gimple internal representation of every function, so that this SSA representation is available at link-time.GCC has long implemented a warning to detect these kinds of bugs: -Wfree-nonheap-object. But until GCC 11, the option detected only the most obvious bugs involving the free() function—basically just passing the address of a named variable to it. GCC 11 has been enhanced to check every call to every known C or C++ deallocation function.[Bug lto/59469] LLVM build failure with gcc LTO. octoploid at yandex dot com Wed, 11 Dec 2013 12:51:24 -0800That is effectively what this devolves to. i'm going to try "gcc and gcc > 5.4" implies --with-lto as part of --with-optimizations for now. but if that causes problems, i'll just remove the --with-lto implication from --with-optimizations entirely. msg275194 - Author: Roundup Robot (python-dev) Date: 2016-09-08 22:43This bug was filed against GCC, it was only fixed for Python but not other packages broken in the GCC update (glib2-static and sysprof both mentioned in comments. I can duplicate it personally with sysprof).Daily Build Configuration print OS Version Hostname ant.ociweb.com OS version (uname -a) Linux ant.ociweb.com 3.10.-514.el7.x86_64 #1 SMP Wed Oct 19 11:24:13 EDT 2016 x86_64 x86_64 x86_64 GNU/LinuxFor example, the bug we are looking into is only reproducible with -flto when it is used in combination with -fsanitize=object-size so I want to make sure the issue does not show up when only using -flto or -fsanitize=object-size, as that would be a different bug than the one we are reducing.C++20 introduced the likelihood attributes [[likely]] and [[unlikely]] as a way for a programmer to give an optimization hint to their implementation that a given code path is morJan 01, 2019 · My target device is an EFM32 Cortex-M3 based device. My toolchain is the official ARM GNU toolchain gcc-arm-none-eabi-8-2018-q4-major. Everything works fine without LTO, but to make LTO work I have to mark all interrupt handler code with -fno-lto. I would like to get rid of this workaround. But unfortunately these kind of bugs have been reported like, memory corruption with *crafted* ELF file. https://www.google.com/search?q=binutils+crafted+elf+cve From the perspective of attackers, they can prevent some kind of services by sending crafted ELF file through network. i.e. Denial of Service. Please consider our request of fixing.GCC Bugzilla – Bug 90924 lto-plugin/lto-plugin.c heap memory corruption due to insufficient sanitization. Last modified: 2020-05-08 09:47:28 UTC Compiling libretro-PCSX2 fails with GCC Link Time Optimization (LTO) enabled. (Not directly related but similar, Clang compiler support and Clang LTO support should be added as well but this currently doesn't directly impact this issue.) How to reproduce the issue: Compile the project with the GCC compiler with LTO enabled. Last known version ...[Bug target/104853] [RISC-V] -march=rv64g not including extension Zifencei. i at rvalue dot moe via Gcc-bugs Tue, 08 Mar 2022 23:19:43 -0800Whole-program Analysis via Link-Time Optimization (LTO) ¶ You can enable GCC's "link time optimization" feature by passing -flto. When this is enabled, gcc adds extra sections to the compiled .o file containing the SSA-Gimple internal representation of every function, so that this SSA representation is available at link-time.To: Nick Desaulniers <[email protected]>; Subject: Re: [PATCH v2 18/18] arm64: select ARCH_SUPPORTS_LTO_CLANG; From: "Paul E. McKenney" <[email protected]>; Date: Thu, 16 Nov 2017 10:39:51 -0800; Cc: Peter Zijlstra <[email protected]>, Sami Tolvanen <[email protected]>, Will Deacon <[email protected]>, Alex Matveev <[email protected]>, Andi Kleen <[email protected] ...[Bug lto/59469] LLVM build failure with gcc LTO. octoploid at yandex dot com Wed, 11 Dec 2013 12:51:24 -0800The pathname of the directory into which the sources are unpacked should not contain spaces, as most make programs (and specifically GNU make) do not expect spaces. If you want th*PATCH v6 kspp-next 00/22] Function Granular KASLR @ 2021-08-31 14:40 Alexander Lobakin 2021-08-31 14:40 ` [PATCH v6 kspp-next 01/22] kbuild: Fix TRIM_UNUSED_KSYMS with LTO_CLANG Alexander Lobakin ` (22 more replies) 0 siblings, 23 replies; 29+ messages in thread From: Alexander Lobakin @ 2021-08-31 14:40 UTC (permalink / raw) To: linux-hardening Cc: Kristen C Accardi, Kristen Carlson Accardi ...Jun 19, 2014 · Bug 61564 - #pragma GCC optimize ("-fno-lto") causes the compiler to crash Attachments Add an attachment (proposed patch, testcase, etc.) Note You need to log in before you can comment on or make changes to this bug. Introduction. This is the second post in our Firmware Code Size Optimization series. Last time, we talked about measuring code size as a precondition to improving it.Now we'll leap from planning into action! In this post, we will review compiler options that we can use to reduce firmware code size.Jan 01, 2019 · My target device is an EFM32 Cortex-M3 based device. My toolchain is the official ARM GNU toolchain gcc-arm-none-eabi-8-2018-q4-major. Everything works fine without LTO, but to make LTO work I have to mark all interrupt handler code with -fno-lto. I would like to get rid of this workaround. Download gcc-12-mips64-linux-gnuabi64_12-20220319-1cross2_arm64.deb for Debian Sid from Debian Main repository.[Bug tree-optimization/105049] New: ICE: in build_vector_from_val, at tree.cc:2119 with -O -fno-tree-forwprop. zsojka at seznam dot cz via Gcc-bugs Thu, 24 Mar 2022 15:41:52 -0700Created attachment 48956 LTO debug output GCC may generate separate debug info files which contain undefined symbols without relocations. Here is the lto output from binutils LTO build: [[email protected] binutils-cross-run]$ readelf -rsW /tmp/gcc.lto.debug.o | grep lreal 96: 0000000000000000 0 NOTYPE GLOBAL DEFAULT UND lrealpath [[email protected] binutils-cross-run]$ It triggered a linker bug: https ...Note You need to log in before you can comment on or make changes to this bug.Next by Date: Processed: Re: Bug#753134: lto1: fatal error: LTO_tags out of range: Range is 0 to 368, value is 756; Previous by thread: Processed: Re: Bug#759683: gcc: internal compiler error: Killed (program cc1) Next by thread: Processed: Re: Bug#753134: lto1: fatal error: LTO_tags out of range: Range is 0 to 368, value is 756; Index(es ...Bug ID: 90957 Summary: 453.povray is miscompiled with -flto -static Product: gcc Version: 10.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: lto Assignee: unassigned at gcc dot gnu.org Reporter: mkuvyrkov at gcc dot gnu.org CC: marxin at gcc dot gnu.org Target Milestone: --- Created attachment 46509 --> https://gcc.gnu.org ...For example, the bug we are looking into is only reproducible with -flto when it is used in combination with -fsanitize=object-size so I want to make sure the issue does not show up when only using -flto or -fsanitize=object-size, as that would be a different bug than the one we are reducing.Download gcc-12-mips64-linux-gnuabi64_12-20220319-1cross2_arm64.deb for Debian Sid from Debian Main repository.OK, I've had a look at this PR again, comparing output from the mingw compiler versus an ELF one. The ELF gcc plugin has multiple copies of _ZTI1A and similar symbols added via ld/plugin.c:add_symbols. The difference is that the ELF gcc makes them weak. That's the reason why ld does not complain for ELF. So this is probably a mingw gcc bug.You can compare it with report on the benefits for switch from GCC 6 PGO to Clang 6 LTO+PGO in this bug 1481721. Note that speedometer is no longer run as part of the Talos benchmarks. I ran it locally and improvement over Clang was 5.3%. Clearly for both compilers LTO does have important effect on the performance.This bug was filed against GCC, it was only fixed for Python but not other packages broken in the GCC update (glib2-static and sysprof both mentioned in comments. I can duplicate it personally with sysprof).Free Software Hacker Recently we have received many complaints from users about site-wide blocking of their own and blocking of their own activities please go to the settings off state, please visit:Posts: 212. Location: Richmond Hill, Canada. Posted: Mon Feb 07, 2022 4:56 pm Post subject: gcc with lto/pgo. It is my understanding that USE flag lto/pgo for gcc, is not give gcc more optimization strategy, but is is optimize gcc that compiler itself. So the optimized gcc should execute more efficient.Last Saturday, gcc acquired the ability to do link-time optimization (LTO), the moral equivalent of msvc's /LTCG option. We should support this -- or at least give it a try -- on our gcc platforms (mac, linux, etc.) as it's likely to give a substantial cross-the-board speedup. http://gcc.gnu.org/wiki/[email protected] BðL Áÿ ÿ ü€;H9 FFmpeg0Jurassic.Park.3.2001.1080p.BluRay.H264.AAC-RARBG‡ª ...The GNU Arm Embedded Toolchain is a ready-to-use, open-source suite of tools for C, C++ and assembly programming. The GNU Arm Embedded Toolchain targets the 32-bit Arm Cortex-A, Arm Cortex-M, and Arm Cortex-R processor families. The GNU Arm Embedded Toolchain includes the GNU Compiler (GCC) and is available free of charge directly from Arm for ...diff --git a/clang/docs/ReleaseNotes.rst b/clang/docs/ReleaseNotes.rst : index 09f656815d43..72b043f28d03 100644 --- a/clang/docs/ReleaseNotes.rst +++ b/clang/docs ...[Bug lto/59469] LLVM build failure with gcc LTO. octoploid at yandex dot com Wed, 11 Dec 2013 12:51:24 -0800Next by Date: Processed: Re: Bug#753134: lto1: fatal error: LTO_tags out of range: Range is 0 to 368, value is 756; Previous by thread: Processed: Re: Bug#759683: gcc: internal compiler error: Killed (program cc1) Next by thread: Processed: Re: Bug#753134: lto1: fatal error: LTO_tags out of range: Range is 0 to 368, value is 756; Index(es ...[Bug tree-optimization/105049] New: ICE: in build_vector_from_val, at tree.cc:2119 with -O -fno-tree-forwprop. zsojka at seznam dot cz via Gcc-bugs Thu, 24 Mar 2022 15:41:52 -0700The pathname of the directory into which the sources are unpacked should not contain spaces, as most make programs (and specifically GNU make) do not expect spaces. If you want thNote - the plugin is automatically enabled in gcc builds via flags provided by the redhat-rpm-macros package. One of the tools is a plugin for Clang that records information about the security options that were in effect when the binary was compiled.I would like to submit a patch that adds support for Link Time Optimization (LTO) when using GCC and CLANG to compile CPython2 and CPython3. LTO is a compiler assisted optimization technique that is performed by the compiler at link time. Combined with Profile Guided Optimization (PGO), enabled when running "make profile-opt", and running the ...Posts: 212. Location: Richmond Hill, Canada. Posted: Mon Feb 07, 2022 4:56 pm Post subject: gcc with lto/pgo. It is my understanding that USE flag lto/pgo for gcc, is not give gcc more optimization strategy, but is is optimize gcc that compiler itself. So the optimized gcc should execute more efficient.Posts: 212. Location: Richmond Hill, Canada. Posted: Mon Feb 07, 2022 4:56 pm Post subject: gcc with lto/pgo. It is my understanding that USE flag lto/pgo for gcc, is not give gcc more optimization strategy, but is is optimize gcc that compiler itself. So the optimized gcc should execute more efficient.GCC Bugzilla - Bug 104985 [12 Regression] ICE: SIGSEGV in undo_to_marker / adjust_reg_mode with -Os -frounding-math since r12-4767-g81342e95827f77 Last modified: 2022-03-28 12:55:25 UTCThis bug is present in the latest TDM-GCC-64 4.7.1-core1. Is there any patch/release planned to fix this ? If you would like to refer to this comment somewhere else in this project, copy and paste the following link:In libjavajpeg.so and libawt.so global variable of type JavaVM* 'jvm' is being used. When static libs are being produced for both on a GCC 10+ system (without -fcommon), libjavajpeg.a and libawt.a and subsequently used in a native image the link will fail due to duplicate variable 'jvm'.Compare your own system(s) to this result file with the Phoronix Test Suite by running the command: phoronix-test-suite benchmark 2204039-NE-NVMETEST529Download gcc-12-mips64-linux-gnuabi64_12-20220319-1cross2_arm64.deb for Debian Sid from Debian Main repository.The GNU Arm Embedded Toolchain is a ready-to-use, open-source suite of tools for C, C++ and assembly programming. The GNU Arm Embedded Toolchain targets the 32-bit Arm Cortex-A, Arm Cortex-M, and Arm Cortex-R processor families. The GNU Arm Embedded Toolchain includes the GNU Compiler (GCC) and is available free of charge directly from Arm for ...Introduction. This is the second post in our Firmware Code Size Optimization series. Last time, we talked about measuring code size as a precondition to improving it.Now we'll leap from planning into action! In this post, we will review compiler options that we can use to reduce firmware code size.Introduction . Generally speaking, a cross-compiler is a compiler that runs on platform A (the host), but generates executables for platform B (the target).These two platforms may (but do not need to) differ in CPU, operating system, and/or executable format.In our case, the host platform is your current operating system and the target platform is the operating system you are about to make.Note - the plugin is automatically enabled in gcc builds via flags provided by the redhat-rpm-macros package. One of the tools is a plugin for Clang that records information about the security options that were in effect when the binary was compiled.GCC Bugzilla - Bug 78387 OpenMP segfault/stack size exceeded writing to internal file Last modified: 2022-01-12 01:06:15 UTCThis bug was filed against GCC, it was only fixed for Python but not other packages broken in the GCC update (glib2-static and sysprof both mentioned in comments. I can duplicate it personally with sysprof).This bug is present in the latest TDM-GCC-64 4.7.1-core1. Is there any patch/release planned to fix this ? If you would like to refer to this comment somewhere else in this project, copy and paste the following link:Jan 01, 2019 · My target device is an EFM32 Cortex-M3 based device. My toolchain is the official ARM GNU toolchain gcc-arm-none-eabi-8-2018-q4-major. Everything works fine without LTO, but to make LTO work I have to mark all interrupt handler code with -fno-lto. I would like to get rid of this workaround. Bug 1610457 - gcc bug when static linking with boost and lto enabledSummary: gcc bug when static linking with boost and lto enabled. Keywords : Status : CLOSED ERRATA. Alias: None. Product: Red Hat Developer Toolset. Classification:gcc - GNU project C and C++ compilerGCC has long implemented a warning to detect these kinds of bugs: -Wfree-nonheap-object. But until GCC 11, the option detected only the most obvious bugs involving the free() function—basically just passing the address of a named variable to it. GCC 11 has been enhanced to check every call to every known C or C++ deallocation function.OK, I've had a look at this PR again, comparing output from the mingw compiler versus an ELF one. The ELF gcc plugin has multiple copies of _ZTI1A and similar symbols added via ld/plugin.c:add_symbols. The difference is that the ELF gcc makes them weak. That's the reason why ld does not complain for ELF. So this is probably a mingw gcc bug.Jan 01, 2019 · My target device is an EFM32 Cortex-M3 based device. My toolchain is the official ARM GNU toolchain gcc-arm-none-eabi-8-2018-q4-major. Everything works fine without LTO, but to make LTO work I have to mark all interrupt handler code with -fno-lto. I would like to get rid of this workaround. On 2014.11.14 at 20:13 +0100, Jan Hubicka wrote: > this patch kills lto's code to rebuilt DECL_FUNCTION_SPECIFIC_TARGET from target > attributes. This code was never complete and it should be no-op now when we save > tehe target nodes. > It also makes free_land_data_in_decl to actually anotate all function bodies with > a default option node. The reason is that when LTOint units, one compiled ... Business: [email protected] Gcc lto bug: Bugs. Scintilla. Brought to you by: ... #2259 Win32 GCC LTO ODR violation warning for Message enum Milestone: Bug. Status: closed-fixed. Owner: Neil Hodgson Labels: scintilla (516) win32 (55) Priority: 5 Updated: 2021-06-24 Created: 2021-06-03 Creator: Zufu Liu ...Introduction. This is the second post in our Firmware Code Size Optimization series. Last time, we talked about measuring code size as a precondition to improving it.Now we'll leap from planning into action! In this post, we will review compiler options that we can use to reduce firmware code size.. 404 Not Found The requested resource could not be found. But unfortunately these kind of bugs have been reported like, memory corruption with *crafted* ELF file. https://www.google.com/search?q=binutils+crafted+elf+cve From the perspective of attackers, they can prevent some kind of services by sending crafted ELF file through network. i.e. Denial of Service. Please consider our request of fixing. -f3b coworking space case studyqnap home assistantnorth somerset planning feesnx 11 parts listgrocery stores in hawaiikohler bathroom accessories indiajaguar chevy v8 conversion for saleinstance segmentation papers with codelargest flour companiesfs22 mining mods