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2023-06-11Daily bump.GCC Administrator1-0/+4
2023-06-10libatomic: x86_64: Always try ifuncXi Ruoyao1-3/+1
We used to skip ifunc check when CX16 is available. But now we use CX16+AVX+Intel/AMD for the "perfect" 16b load implementation, so CX16 alone is not a sufficient reason not to use ifunc (see PR104688). This causes a subtle and annoying issue: when GCC is built with a higher -march= setting in CFLAGS_FOR_TARGET, ifunc is disabled and the worst (locked) implementation of __atomic_load_16 is always used. There seems no good way to check if the CPU is Intel or AMD from the built-in macros (maybe we can check every known model like __skylake, __bdver2, ..., but it will be very error-prune and require an update whenever we add the support for a new x86 model). The best thing we can do seems "always try ifunc" here. libatomic/ChangeLog: * configure.tgt: For x86_64, always set try_ifunc=yes.
2023-06-03Daily bump.GCC Administrator1-0/+7
2023-06-02Remove stale Autoconf checks for PerlThomas Schwinge4-47/+2
Subversion r110220 (Git commit 03b8fe495d716c004f5491eb2347537f115ab2d8) for PR25884 "libgomp should not require perl to compile" removed all '$(PERL)' usage from libgomp -- but didn't remove the then-unused Autoconf Perl check itself. Later, this Autoconf Perl check appears to have been copied from libgomp into other GCC libraries, likewise unused. libgomp/ * configure.ac (PERL): Remove. * configure: Regenerate. * Makefile.in: Likewise. * testsuite/Makefile.in: Likewise. libatomic/ * configure.ac (PERL): Remove. * configure: Regenerate. * Makefile.in: Likewise. * testsuite/Makefile.in: Likewise. libgm2/ * configure.ac (PERL): Remove. * configure: Regenerate. * Makefile.in: Likewise. * libm2cor/Makefile.in: Likewise. * libm2iso/Makefile.in: Likewise. * libm2log/Makefile.in: Likewise. * libm2min/Makefile.in: Likewise. * libm2pim/Makefile.in: Likewise. libitm/ * configure.ac (PERL): Remove. * configure: Regenerate. * Makefile.in: Likewise. * testsuite/Makefile.in: Likewise.
2023-03-25Daily bump.GCC Administrator1-0/+6
2023-03-24libatomic: Fix SEQ_CST 128-bit atomic load [PR108891]Wilco Dijkstra1-74/+115
The LSE2 ifunc for 16-byte atomic load requires a barrier before the LDP - without it, it effectively has Load-AcquirePC semantics similar to LDAPR, which is less restrictive than what __ATOMIC_SEQ_CST requires. This patch fixes this and adds comments to make it easier to see which sequence is used for each case. Use a load/store exclusive loop for store to simplify testing memory ordering is correct (it is slightly faster too). libatomic/ PR libgcc/108891 * config/linux/aarch64/atomic_16.S: Fix libat_load_16_i1. Add comments describing the memory order.
2023-03-04Daily bump.GCC Administrator1-0/+6
2023-03-03s390: libatomic: Fix 16 byte atomic {cas,load,store}Stefan Schulze Frielinghaus3-0/+176
This is a follow-up to commit a4c6bd0821099f6b8c0f64a96ffd9d01a025c413 introducing a runtime check for alignment for 16 byte atomic compare-exchange, load, and store. libatomic/ChangeLog: * config/s390/cas_n.c: New file. * config/s390/load_n.c: New file. * config/s390/store_n.c: New file.
2023-01-17Daily bump.GCC Administrator1-0/+5
2023-01-16Update copyright years.Jakub Jelinek43-43/+43
2023-01-16libatomic: Use config/mingw/lock.c for --enable-threads=singleJonathan Wakely1-1/+1
Without this change bootstrap fails for x86_64-w64-mingw32 with --disable-threads=single because there is no lock.c file chosen by libatomic's configure. libatomic/ChangeLog: * configure.tgt (config_path) [target_thread_file=single]: Use 'mingw' config.
2023-01-08Daily bump.GCC Administrator1-0/+6
2023-01-07Always define `WIN32_LEAN_AND_MEAN` before <windows.h>LIU Hao1-0/+1
Recently, mingw-w64 has got updated <msxml.h> from Wine which is included indirectly by <windows.h> if `WIN32_LEAN_AND_MEAN` is not defined. The `IXMLDOMDocument` class has a member function named `abort()`, which gets affected by our `abort()` macro in "system.h". `WIN32_LEAN_AND_MEAN` should, nevertheless, always be defined. This can exclude 'APIs such as Cryptography, DDE, RPC, Shell, and Windows Sockets' [1], and speed up compilation of these files a bit. [1] https://learn.microsoft.com/en-us/windows/win32/winprog/using-the-windows-headers gcc/ PR middle-end/108300 * config/xtensa/xtensa-dynconfig.c: Define `WIN32_LEAN_AND_MEAN` before <windows.h>. * diagnostic-color.cc: Likewise. * plugin.cc: Likewise. * prefix.cc: Likewise. gcc/ada/ PR middle-end/108300 * adaint.c: Define `WIN32_LEAN_AND_MEAN` before `#include <windows.h>`. * cio.c: Likewise. * ctrl_c.c: Likewise. * expect.c: Likewise. * gsocket.h: Likewise. * mingw32.h: Likewise. * mkdir.c: Likewise. * rtfinal.c: Likewise. * rtinit.c: Likewise. * seh_init.c: Likewise. * sysdep.c: Likewise. * terminals.c: Likewise. * tracebak.c: Likewise. gcc/jit/ PR middle-end/108300 * jit-w32.h: Define `WIN32_LEAN_AND_MEAN` before <windows.h>. libatomic/ PR middle-end/108300 * config/mingw/lock.c: Define `WIN32_LEAN_AND_MEAN` before <windows.h>. libffi/ PR middle-end/108300 * src/aarch64/ffi.c: Define `WIN32_LEAN_AND_MEAN` before <windows.h>. libgcc/ PR middle-end/108300 * config/i386/enable-execute-stack-mingw32.c: Define `WIN32_LEAN_AND_MEAN` before <windows.h>. * libgcc2.c: Likewise. * unwind-generic.h: Likewise. libgfortran/ PR middle-end/108300 * intrinsics/sleep.c: Define `WIN32_LEAN_AND_MEAN` before <windows.h>. libgomp/ PR middle-end/108300 * config/mingw32/proc.c: Define `WIN32_LEAN_AND_MEAN` before <windows.h>. libiberty/ PR middle-end/108300 * make-temp-file.c: Define `WIN32_LEAN_AND_MEAN` before <windows.h>. * pex-win32.c: Likewise. libssp/ PR middle-end/108300 * ssp.c: Define `WIN32_LEAN_AND_MEAN` before <windows.h>. libstdc++-v3/ PR middle-end/108300 * src/c++11/system_error.cc: Define `WIN32_LEAN_AND_MEAN` before <windows.h>. * src/c++11/thread.cc: Likewise. * src/c++17/fs_ops.cc: Likewise. * src/filesystem/ops.cc: Likewise. libvtv/ PR middle-end/108300 * vtv_malloc.cc: Define `WIN32_LEAN_AND_MEAN` before <windows.h>. * vtv_rts.cc: Likewise. * vtv_utils.cc: Likewise.
2023-01-02Update Copyright year in ChangeLog filesJakub Jelinek1-1/+1
2022 -> 2023
2022-11-17Daily bump.GCC Administrator1-0/+4
2022-11-16libatomic: regenerate Makefile.inMartin Liska1-1/+0
libatomic/ChangeLog: * Makefile.in: Re-generate.
2022-11-16Daily bump.GCC Administrator1-0/+11
2022-11-15libatomic: Add support for LSE and LSE2Wilco Dijkstra5-18/+527
Add support for AArch64 LSE and LSE2 to libatomic. Disable outline atomics, and use LSE ifuncs for 1-8 byte atomics and LSE2 ifuncs for 16-byte atomics. On Neoverse V1, 16-byte atomics are ~4x faster due to avoiding locks. Note this is safe since we swap all 16-byte atomics using the same ifunc, so they either use locks or LSE2 atomics, but never a mix. This also improves ABI compatibility with LLVM: its inlined 16-byte atomics are compatible with the new libatomic if LSE2 is supported. libatomic/ * Makefile.in: Regenerated with automake 1.15.1. * Makefile.am: Add atomic_16.S for AArch64. * configure.tgt: Disable outline atomics in AArch64 build. * config/linux/aarch64/atomic_16.S: New file - implementation of ifuncs for 16-byte atomics. * config/linux/aarch64/host-config.h: Enable ifuncs, use LSE (HWCAP_ATOMICS) for 1-8-byte atomics and LSE2 (HWCAP_USCAT) for 16-byte atomics.
2022-11-15Daily bump.GCC Administrator1-0/+6
2022-11-15libatomic: Handle AVX+CX16 AMD like Intel for 16b atomics [PR104688]Jakub Jelinek1-2/+4
We got a response from AMD in https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104688#c10 so the following patch starts treating AMD with AVX and CMPXCHG16B ISAs like Intel by using vmovdqa for atomic load/store in libatomic. We still don't have confirmation from Zhaoxin and VIA (anything else with CPUs featuring AVX and CX16?). 2022-11-15 Jakub Jelinek <jakub@redhat.com> PR target/104688 * config/x86/init.c (__libat_feat1_init): Don't clear bit_AVX on AMD CPUs.
2022-10-20Daily bump.GCC Administrator1-0/+4
2022-10-19gcc: Add 'mcf' thread model support from mcfgthreadLIU Hao1-1/+1
This patch adds the new thread model `mcf`, which implements mutexes and condition variables with the mcfgthread library. Source code for mcfgthread is available at <https://github.com/lhmouse/mcfgthread>. config/ChangeLog: * gthr.m4 (GCC_AC_THREAD_HEADER): Add new case for `mcf` thread model gcc/ChangeLog: * config/i386/mingw-mcfgthread.h: New file * config/i386/mingw32.h: Add builtin macro and default libraries for mcfgthread when thread model is `mcf` * config.gcc: Include 'i386/mingw-mcfgthread.h' when thread model is `mcf` * configure.ac: Recognize `mcf` as a valid thread model * config.in: Regenerate * configure: Regenerate libatomic/ChangeLog: * configure.tgt: Add new case for `mcf` thread model libgcc/ChangeLog: * config.host: Add new cases for `mcf` thread model * config/i386/gthr-mcf.h: New file * config/i386/t-mingw-mcfgthread: New file * config/i386/t-slibgcc-cygming: Add mcfgthread for libgcc DLL * configure: Regenerate libstdc++-v3/ChangeLog: * libsupc++/atexit_thread.cc (__cxa_thread_atexit): Use implementation from mcfgthread if available * libsupc++/guard.cc (__cxa_guard_acquire, __cxa_guard_release, __cxa_guard_abort): Use implementations from mcfgthread if available * configure: Regenerate
2022-10-13Daily bump.GCC Administrator1-0/+4
2022-10-12regenerate configure filesMartin Liska1-2/+2
Needed after a recent change. gcc/ChangeLog: * configure: Regenerate. libatomic/ChangeLog: * configure: Regenerate. libbacktrace/ChangeLog: * configure: Regenerate. libcc1/ChangeLog: * configure: Regenerate. libffi/ChangeLog: * configure: Regenerate. libgfortran/ChangeLog: * configure: Regenerate. libgomp/ChangeLog: * configure: Regenerate. libitm/ChangeLog: * configure: Regenerate. libobjc/ChangeLog: * configure: Regenerate. liboffloadmic/ChangeLog: * configure: Regenerate. * plugin/configure: Regenerate. libphobos/ChangeLog: * configure: Regenerate. libquadmath/ChangeLog: * configure: Regenerate. libsanitizer/ChangeLog: * configure: Regenerate. libssp/ChangeLog: * configure: Regenerate. libstdc++-v3/ChangeLog: * configure: Regenerate. libvtv/ChangeLog: * configure: Regenerate. lto-plugin/ChangeLog: * configure: Regenerate. zlib/ChangeLog: * configure: Regenerate.
2022-10-12Daily bump.GCC Administrator1-0/+5
2022-10-11Generic configury support for shared libs on VxWorksOlivier Hainque1-0/+24
This change adds the configury bits to activate the build of shared libs on VxWorks ports configured with --enable-shared, for libraries variants where this is generally supported (rtp, code model !large - currently not compatible with -fPIC). Set lt_cv_deplibs_check_method in libtool.m4, so the build of libraries know how to establish dependencies. This is useful in configurations such as aarch64 where proper support of LSE relies on accurate dependency information between libstdc++ and libgcc_s to begin with. Regenerate configure scripts to reflect libtool.m4 change. 2022-10-09 Olivier Hainque <hainque@adacore.com> * libtool.m4 (*vxworks*): When enable_shared, set dynamic_linker and friends for rtp !large. Assume the linker has the required abilities and set lt_cv_deplibs_check_method. gcc/ * config.gcc (*vxworks*): Add t-slibgcc fragment if enable_shared. libgcc/ * config.host (*vxworks*): When enable_shared, add libgcc and crtstuff "shared" fragments for rtp except large code model. (aarch64*-wrs-vxworks7*): Remove t-slibgcc-libgcc from the list of fragments. 2022-10-09 Olivier Hainque <hainque@adacore.com> gcc/ * configure: Regenerate. libatomic/ * configure: Regenerate. libbacktrace/ * configure: Regenerate. libcc1/ * configure: Regenerate. libffi/ * configure: Regenerate. libgfortran/ * configure: Regenerate. libgomp/ * configure: Regenerate. libitm/ * configure: Regenerate. libobjc/ * configure: Regenerate. liboffloadmic/ * configure: Regenerate. liboffloadmic/ * plugin/configure: Regenerate. libphobos/ * configure: Regenerate. libquadmath/ * configure: Regenerate. libsanitizer/ * configure: Regenerate. libssp/ * configure: Regenerate. libstdc++-v3/ * configure: Regenerate. libvtv/ * configure: Regenerate. lto-plugin/ * configure: Regenerate. zlib/ * configure: Regenerate.
2022-08-31Daily bump.GCC Administrator1-0/+4
2022-08-30automake: regenerateMartin Liska1-0/+1
gotools/ChangeLog: * Makefile.in: Regenerate. libatomic/ChangeLog: * testsuite/Makefile.in: Regenerate.
2022-08-09Daily bump.GCC Administrator1-0/+12
2022-08-08AArch32: Fix 128-bit sequential consistency atomic operations.Tamar Christina1-0/+19
Similar to AArch64 the Arm implementation of 128-bit atomics is broken. For 128-bit atomics we rely on pthread barriers to correct guard the address in the pointer to get correct memory ordering. However for 128-bit atomics the address under the lock is different from the original pointer. This means that one of the values under the atomic operation is not protected properly and so we fail during when the user has requested sequential consistency as there's no barrier to enforce this requirement. As such users have resorted to adding an #ifdef GCC <emit barrier> #endif around the use of these atomics. This corrects the issue by issuing a barrier only when __ATOMIC_SEQ_CST was requested. I have hand verified that the barriers are inserted for atomic seq cst. libatomic/ChangeLog: PR target/102218 * config/arm/host-config.h (pre_seq_barrier, post_seq_barrier, pre_post_seq_barrier): Require barrier on __ATOMIC_SEQ_CST.
2022-08-08AArch64: Fix 128-bit sequential consistency atomic operations.Tamar Christina2-0/+69
The AArch64 implementation of 128-bit atomics is broken. For 128-bit atomics we rely on pthread barriers to correct guard the address in the pointer to get correct memory ordering. However for 128-bit atomics the address under the lock is different from the original pointer. This means that one of the values under the atomic operation is not protected properly and so we fail during when the user has requested sequential consistency as there's no barrier to enforce this requirement. As such users have resorted to adding an #ifdef GCC <emit barrier> #endif around the use of these atomics. This corrects the issue by issuing a barrier only when __ATOMIC_SEQ_CST was requested. To remedy this performance hit I think we should revisit using a similar approach to out-line-atomics for the 128-bit atomics. Note that I believe I need the empty file due to the include_next chain but I am not entirely sure. I have hand verified that the barriers are inserted for atomic seq cst. libatomic/ChangeLog: PR target/102218 * config/aarch64/aarch64-config.h: New file. * config/aarch64/host-config.h: New file.
2022-06-03Daily bump.GCC Administrator1-0/+4
2022-06-02diagnostics: add SARIF output formatDavid Malcolm1-0/+1
This patch adds support to gcc's diagnostic subsystem for emitting diagnostics in SARIF, aka the Static Analysis Results Interchange Format: https://sarifweb.azurewebsites.net/ by extending -fdiagnostics-format= to add two new options: -fdiagnostics-format=sarif-stderr and: -fdiagnostics-format=sarif-file The patch targets SARIF v2.1.0 This is a JSON-based format suited for capturing the results of static analysis tools (like GCC's -fanalyzer), but it can also be used for plain GCC warnings and errors. SARIF supports per-event metadata in diagnostic paths such as ["acquire", "resource"] and ["release", "lock"] (specifically, the threadFlowLocation "kinds" property: SARIF v2.1.0 section 3.38.8), so the patch extends GCC"s diagnostic_event subclass with a "struct meaning" with similar purpose. The patch implements this for -fanalyzer so that the various state-machine-based warnings set these in the SARIF output. The heart of the implementation is in the new file diagnostic-format-sarif.cc. Much of the rest of the patch is interface classes, isolating the diagnostic subsystem (which has no knowledge of e.g. tree or langhook) from the "client" code in the compiler proper cc1 etc). The patch adds a langhook for specifying the SARIF v2.1.0 "artifact.sourceLanguage" property, based on the list in SARIF v2.1.0 Appendix J. The patch adds automated DejaGnu tests to our testsuite via new scan-sarif-file and scan-sarif-file-not directives (although these merely use regexps, rather than attempting to use a proper JSON parser). I've tested the patch by hand using the validator at: https://sarifweb.azurewebsites.net/Validation and the react-based viewer at: https://microsoft.github.io/sarif-web-component/ which successfully shows most of the information (although not paths, and not CWE IDs), and I've fixed all validation errors I've seen (though bugs no doubt remain). I've also tested the generated SARIF using the VS Code extension linked to from the SARIF website; I'm a novice with VS Code, but it seems to be able to handle my generated SARIF files (e.g. showing the data in the SARIF tab, and showing squiggly underlines under issues, and when I click on them, it visualizes the events in the path inline within the source window). Has anyone written an Emacs mode for SARIF files? (pretty please) gcc/ChangeLog: * Makefile.in (OBJS): Add tree-diagnostic-client-data-hooks.o and tree-logical-location.o. (OBJS-libcommon): Add diagnostic-format-sarif.o; reorder. (CFLAGS-tree-diagnostic-client-data-hooks.o): Add TARGET_NAME. * common.opt (fdiagnostics-format=): Add sarif-stderr and sarif-file. (sarif-stderr, sarif-file): New enum values. * diagnostic-client-data-hooks.h: New file. * diagnostic-format-sarif.cc: New file. * diagnostic-path.h (enum diagnostic_event::verb): New enum. (enum diagnostic_event::noun): New enum. (enum diagnostic_event::property): New enum. (struct diagnostic_event::meaning): New struct. (diagnostic_event::get_logical_location): New vfunc. (diagnostic_event::get_meaning): New vfunc. (simple_diagnostic_event::get_logical_location): New vfunc impl. (simple_diagnostic_event::get_meaning): New vfunc impl. * diagnostic.cc: Include "diagnostic-client-data-hooks.h". (diagnostic_initialize): Initialize m_client_data_hooks. (diagnostic_finish): Clean up m_client_data_hooks. (diagnostic_event::meaning::dump_to_pp): New. (diagnostic_event::meaning::maybe_get_verb_str): New. (diagnostic_event::meaning::maybe_get_noun_str): New. (diagnostic_event::meaning::maybe_get_property_str): New. (get_cwe_url): Make non-static. (diagnostic_output_format_init): Handle DIAGNOSTICS_OUTPUT_FORMAT_SARIF_STDERR and DIAGNOSTICS_OUTPUT_FORMAT_SARIF_FILE. * diagnostic.h (enum diagnostics_output_format): Add DIAGNOSTICS_OUTPUT_FORMAT_SARIF_STDERR and DIAGNOSTICS_OUTPUT_FORMAT_SARIF_FILE. (class diagnostic_client_data_hooks): New forward decl. (class logical_location): New forward decl. (diagnostic_context::m_client_data_hooks): New field. (diagnostic_output_format_init_sarif_stderr): New decl. (diagnostic_output_format_init_sarif_file): New decl. (get_cwe_url): New decl. * doc/invoke.texi (-fdiagnostics-format=): Add sarif-stderr and sarif-file. * doc/sourcebuild.texi (Scan a particular file): Add scan-sarif-file and scan-sarif-file-not. * langhooks-def.h (lhd_get_sarif_source_language): New decl. (LANG_HOOKS_GET_SARIF_SOURCE_LANGUAGE): New macro. (LANG_HOOKS_INITIALIZER): Add LANG_HOOKS_GET_SARIF_SOURCE_LANGUAGE. * langhooks.cc (lhd_get_sarif_source_language): New. * langhooks.h (lang_hooks::get_sarif_source_language): New field. * logical-location.h: New file. * plugin.cc (struct for_each_plugin_closure): New. (for_each_plugin_cb): New. (for_each_plugin): New. * plugin.h (for_each_plugin): New decl. * tree-diagnostic-client-data-hooks.cc: New file. * tree-diagnostic.cc: Include "diagnostic-client-data-hooks.h". (tree_diagnostics_defaults): Populate m_client_data_hooks. * tree-logical-location.cc: New file. * tree-logical-location.h: New file. gcc/ada/ChangeLog: * gcc-interface/misc.cc (gnat_get_sarif_source_language): New. (LANG_HOOKS_GET_SARIF_SOURCE_LANGUAGE): Redefine. gcc/analyzer/ChangeLog: * checker-path.cc (checker_event::get_meaning): New. (function_entry_event::get_meaning): New. (state_change_event::get_desc): Add dump of meaning of the event to the -fanalyzer-verbose-state-changes output. (state_change_event::get_meaning): New. (cfg_edge_event::get_meaning): New. (call_event::get_meaning): New. (return_event::get_meaning): New. (start_consolidated_cfg_edges_event::get_meaning): New. (warning_event::get_meaning): New. * checker-path.h: Include "tree-logical-location.h". (checker_event::checker_event): Construct m_logical_loc. (checker_event::get_logical_location): New. (checker_event::get_meaning): New decl. (checker_event::m_logical_loc): New. (function_entry_event::get_meaning): New decl. (state_change_event::get_meaning): New decl. (cfg_edge_event::get_meaning): New decl. (call_event::get_meaning): New decl. (return_event::get_meaning): New decl. (start_consolidated_cfg_edges_event::get_meaning): New. (warning_event::get_meaning): New decl. * pending-diagnostic.h: Include "diagnostic-path.h". (pending_diagnostic::get_meaning_for_state_change): New vfunc. * sm-file.cc (file_diagnostic::get_meaning_for_state_change): New vfunc impl. * sm-malloc.cc (malloc_diagnostic::get_meaning_for_state_change): Likewise. * sm-sensitive.cc (exposure_through_output_file::get_meaning_for_state_change): Likewise. * sm-taint.cc (taint_diagnostic::get_meaning_for_state_change): Likewise. * varargs.cc (va_list_sm_diagnostic::get_meaning_for_state_change): Likewise. gcc/c/ChangeLog: * c-lang.cc (LANG_HOOKS_GET_SARIF_SOURCE_LANGUAGE): Redefine. (c_get_sarif_source_language): New. * c-tree.h (c_get_sarif_source_language): New decl. gcc/cp/ChangeLog: * cp-lang.cc (LANG_HOOKS_GET_SARIF_SOURCE_LANGUAGE): Redefine. (cp_get_sarif_source_language): New. gcc/d/ChangeLog: * d-lang.cc (d_get_sarif_source_language): New. (LANG_HOOKS_GET_SARIF_SOURCE_LANGUAGE): Redefine. gcc/fortran/ChangeLog: * f95-lang.cc (gfc_get_sarif_source_language): New. (LANG_HOOKS_GET_SARIF_SOURCE_LANGUAGE): Redefine. gcc/go/ChangeLog: * go-lang.cc (go_get_sarif_source_language): New. (LANG_HOOKS_GET_SARIF_SOURCE_LANGUAGE): Redefine. gcc/objc/ChangeLog: * objc-act.h (objc_get_sarif_source_language): New decl. * objc-lang.cc (LANG_HOOKS_GET_SARIF_SOURCE_LANGUAGE): Redefine. (objc_get_sarif_source_language): New. gcc/testsuite/ChangeLog: * c-c++-common/diagnostic-format-sarif-file-1.c: New test. * c-c++-common/diagnostic-format-sarif-file-2.c: New test. * c-c++-common/diagnostic-format-sarif-file-3.c: New test. * c-c++-common/diagnostic-format-sarif-file-4.c: New test. * gcc.dg/analyzer/file-meaning-1.c: New test. * gcc.dg/analyzer/malloc-meaning-1.c: New test. * gcc.dg/analyzer/malloc-sarif-1.c: New test. * gcc.dg/plugin/analyzer_gil_plugin.c (gil_diagnostic::get_meaning_for_state_change): New vfunc impl. * gcc.dg/plugin/diagnostic-test-paths-5.c: New test. * gcc.dg/plugin/plugin.exp (plugin_test_list): Add diagnostic-test-paths-5.c to tests for diagnostic_plugin_test_paths.c. * lib/gcc-dg.exp: Load scansarif.exp. * lib/scansarif.exp: New test. libatomic/ChangeLog: * testsuite/lib/libatomic.exp: Add load_gcc_lib of scansarif.exp. libgomp/ChangeLog: * testsuite/lib/libgomp.exp: Add load_gcc_lib of scansarif.exp. libitm/ChangeLog: * testsuite/lib/libitm.exp: Add load_gcc_lib of scansarif.exp. libphobos/ChangeLog: * testsuite/lib/libphobos-dg.exp: Add load_gcc_lib of scansarif.exp. Signed-off-by: David Malcolm <dmalcolm@redhat.com>
2022-03-25Daily bump.GCC Administrator1-0/+5
2022-03-24[libatomic] Fix return value in libat_test_and_setTom de Vries1-1/+1
On nvptx (using a Quadro K2000 with driver 470.103.01) I ran into this: ... FAIL: gcc.dg/atomic/stdatomic-flag-2.c -O1 execution test ... which mimimized to: ... #include <stdatomic.h> atomic_flag a = ATOMIC_FLAG_INIT; int main () { if ((atomic_flag_test_and_set) (&a)) __builtin_abort (); return 0; } ... The atomic_flag_test_and_set is implemented using __atomic_test_and_set_1, which corresponds to the "word-sized compare-and-swap loop" version of libat_test_and_set in libatomic/tas_n.c. The semantics of a test-and-set is that the return value is "true if and only if the previous contents were 'set'". But the code uses: ... return woldval != 0; ... which means it doesn't look only at the byte that was either set or not set, but at the entire word. Fix this by using instead: ... return (woldval & ((UTYPE) ~(UTYPE) 0 << shift)) != 0; ... Tested on nvptx. libatomic/ChangeLog: 2022-03-24 Tom de Vries <tdevries@suse.de> PR target/105011 * tas_n.c (libat_test_and_set): Fix return value.
2022-03-18Daily bump.GCC Administrator1-0/+24
2022-03-17libatomic: Improve 16-byte atomics on Intel AVX [PR104688]Jakub Jelinek4-11/+55
As mentioned in the PR, the latest Intel SDM has added: "Processors that enumerate support for Intel® AVX (by setting the feature flag CPUID.01H:ECX.AVX[bit 28]) guarantee that the 16-byte memory operations performed by the following instructions will always be carried out atomically: • MOVAPD, MOVAPS, and MOVDQA. • VMOVAPD, VMOVAPS, and VMOVDQA when encoded with VEX.128. • VMOVAPD, VMOVAPS, VMOVDQA32, and VMOVDQA64 when encoded with EVEX.128 and k0 (masking disabled). (Note that these instructions require the linear addresses of their memory operands to be 16-byte aligned.)" The following patch deals with it just on the libatomic library side so far, currently (since ~ 2017) we emit all the __atomic_* 16-byte builtins as library calls since and this is something that we can hopefully backport. The patch simply introduces yet another ifunc variant that takes priority over the pure CMPXCHG16B one, one that checks AVX and CMPXCHG16B bits and on non-Intel clears the AVX bit during detection for now (if AMD comes with the same guarantee, we could revert the config/x86/init.c hunk), which implements 16-byte atomic load as vmovdqa and 16-byte atomic store as vmovdqa followed by mfence. 2022-03-17 Jakub Jelinek <jakub@redhat.com> PR target/104688 * Makefile.am (IFUNC_OPTIONS): Change on x86_64 to -mcx16 -mcx16. (libatomic_la_LIBADD): Add $(addsuffix _16_2_.lo,$(SIZEOBJS)) for x86_64. * Makefile.in: Regenerated. * config/x86/host-config.h (IFUNC_COND_1): For x86_64 define to both AVX and CMPXCHG16B bits. (IFUNC_COND_2): Define. (IFUNC_NCOND): For x86_64 define to 2 * (N == 16). (MAYBE_HAVE_ATOMIC_CAS_16, MAYBE_HAVE_ATOMIC_EXCHANGE_16, MAYBE_HAVE_ATOMIC_LDST_16): Define to IFUNC_COND_2 rather than IFUNC_COND_1. (HAVE_ATOMIC_CAS_16): Redefine to 1 whenever IFUNC_ALT != 0. (HAVE_ATOMIC_LDST_16): Redefine to 1 whenever IFUNC_ALT == 1. (atomic_compare_exchange_n): Define whenever IFUNC_ALT != 0 on x86_64 for N == 16. (__atomic_load_n, __atomic_store_n): Redefine whenever IFUNC_ALT == 1 on x86_64 for N == 16. (atomic_load_n, atomic_store_n): New functions. * config/x86/init.c (__libat_feat1_init): On x86_64 clear bit_AVX if CPU vendor is not Intel.
2022-02-04Daily bump.GCC Administrator1-0/+6
2022-02-03make `-Werror` optional in libatomic/libbacktrace/libgomp/libitm/libsanitizerDavid Seifert2-7/+20
* `-Werror` can cause issues when a more recent version of GCC compiles an older version: - https://bugs.gentoo.org/229059 - https://bugs.gentoo.org/475350 - https://bugs.gentoo.org/667104 libatomic/ChangeLog: * configure.ac: Support --disable-werror. * configure: Regenerate. libbacktrace/ChangeLog: * configure.ac: Support --disable-werror. * configure: Regenerate. libgomp/ChangeLog: * configure.ac: Support --disable-werror. * configure: Regenerate. libitm/ChangeLog: * configure.ac: Support --disable-werror. * configure: Regenerate. libsanitizer/ChangeLog: * configure.ac: Support --disable-werror. * aclocal.m4: Include also ../config/warnings.m4. * libbacktrace/Makefile.am (WARN_FLAGS): Remove. * configure: Regenerate. * Makefile.in: Regenerate. * asan/Makefile.in: Regenerate. * hwasan/Makefile.in: Regenerate. * interception/Makefile.in: Regenerate. * libbacktrace/Makefile.in: Regenerate. * lsan/Makefile.in: Regenerate. * sanitizer_common/Makefile.in: Regenerate. * tsan/Makefile.in: Regenerate. * ubsan/Makefile.in: Regenerate. Co-Authored-By: Jakub Jelinek <jakub@redhat.com>
2022-02-01Daily bump.GCC Administrator1-0/+5
2022-01-31Add mold detection for libs.Martin Liska2-0/+11
libatomic/ChangeLog: * acinclude.m4: Detect *_ld_is_mold and use it. * configure: Regenerate. libgomp/ChangeLog: * acinclude.m4: Detect *_ld_is_mold and use it. * configure: Regenerate. libitm/ChangeLog: * acinclude.m4: Detect *_ld_is_mold and use it. * configure: Regenerate. libstdc++-v3/ChangeLog: * acinclude.m4: Detect *_ld_is_mold and use it. * configure: Regenerate.
2022-01-25Daily bump.GCC Administrator1-0/+6
2022-01-24acinclude.m4: Remove duplicite AC_DEFUN.Martin Liska2-105/+3
libatomic/ChangeLog: * acinclude.m4: Remove duplicate LIBAT_CHECK_LINKER_FEATURES. * configure: Regenerate.
2022-01-03Update copyright years.Jakub Jelinek40-40/+40
2022-01-03Update Copyright in ChangeLog filesJakub Jelinek1-1/+1
Do this separately from all other Copyright updates, as ChangeLog files can be modified only separately.
2021-07-22Daily bump.GCC Administrator1-0/+6
2021-07-21Adjust macro to avoid warning [PR101379].Martin Sebor1-1/+7
Resolves: PR bootstrap/101379 - libatomic arm build failure after r12-2132 due to -Warray-bounds on a constant address libatomic/ChangeLog: PR bootstrap/101379 * config/linux/arm/host-config.h (__kernel_helper_version): New function. Adjust shadow macro.
2021-01-16Daily bump.GCC Administrator1-0/+9
2021-01-15libatomic, libgomp, libitc: Fix bootstrap [PR70454]Jakub Jelinek1-24/+32
The recent changes to error on mixing -march=i386 and -fcf-protection broke bootstrap. This patch changes lib{atomic,gomp,itm} configury, so that it only adds -march=i486 to flags if really needed (i.e. when 486 or later isn't on by default already). Similarly, it will not use ifuncs if -mcx16 (or -march=i686 for 32-bit) is on by default. 2021-01-15 Jakub Jelinek <jakub@redhat.com> PR target/70454 libatomic/ * configure.tgt: For i?86 and x86_64 determine if -march=i486 needs to be added through preprocessor check on __GCC_HAVE_SYNC_COMPARE_AND_SWAP_4. Determine if try_ifunc is needed based on preprocessor check on __GCC_HAVE_SYNC_COMPARE_AND_SWAP_16 or __GCC_HAVE_SYNC_COMPARE_AND_SWAP_8. libgomp/ * configure.tgt: For i?86 and x86_64 determine if -march=i486 needs to be added through preprocessor check on __GCC_HAVE_SYNC_COMPARE_AND_SWAP_4. libitm/ * configure.tgt: For i?86 and x86_64 determine if -march=i486 needs to be added through preprocessor check on __GCC_HAVE_SYNC_COMPARE_AND_SWAP_4.
2021-01-06Daily bump.GCC Administrator1-0/+4
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