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2022-11-06Daily bump.GCC Administrator1-0/+5
2022-11-04libgcc: Special-case BFD ld unwind table encodings in find_fde_tailFlorian Weimer1-10/+48
BFD ld (and the other linkers) only produce one encoding of these values. It is not necessary to use the general read_encoded_value_with_base decoding routine. This avoids the data-dependent branches in its implementation. libgcc/ * unwind-dw2-fde-dip.c (find_fde_tail): Special-case encoding values actually used by BFD ld.
2022-10-24Daily bump.GCC Administrator1-0/+5
2022-10-23libgcc: Update 'gthr-mcf.h' to include a dedicated header for libobjcLIU Hao1-0/+35
'libobjc/thr.c' includes 'gthr.h'. While all the other gthread headers have `#ifdef _LIBOBJC` checks, and provide a different set of inline functions, I think having one header provide two completely unrelated set of APIs is unsatisfactory, complicates maintenance, and hinders further development. This commit references a new header for libobjc, and adds a copyright notice, as in other headers. libgcc/ChangeLog: * config/i386/gthr-mcf.h: Include 'gthr_libobjc.h' when building libobjc, instead of 'gthr.h'
2022-10-20Daily bump.GCC Administrator1-0/+8
2022-10-19gcc: Add 'mcf' thread model support from mcfgthreadLIU Hao5-1/+14
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
2022-10-19Daily bump.GCC Administrator1-0/+4
2022-10-18libgcc: Quote variable in Makefile.inJonathan Wakely1-1/+1
If the xgcc executable has not been built (or has been removed by 'make clean') then the command to print the multilib dir fails, and so the MULTIOSDIR variable is empty. That then causes: /bin/sh: line 0: test: !=: unary operator expected We can avoid it by quoting the variable. libgcc/ChangeLog: * Makefile.in: Quote variable.
2022-10-18Daily bump.GCC Administrator1-0/+17
2022-10-17x86: Check corrupted return address when unwinding stackH.J. Lu3-7/+50
If shadow stack is enabled, when unwinding stack, we count how many stack frames we pop to reach the landing pad and adjust shadow stack by the same amount. When counting the stack frame, we compare the return address on normal stack against the return address on shadow stack. If they don't match, return _URC_FATAL_PHASE2_ERROR for the corrupted return address on normal stack. Don't check the return address for 1. Non-catchable exception where exception_class == 0. Process will be terminated. 2. Zero return address which marks the outermost stack frame. 3. Signal stack frame since kernel puts a restore token on shadow stack. * unwind-generic.h (_Unwind_Frames_Increment): Add the EXC argument. * unwind.inc (_Unwind_RaiseException_Phase2): Pass EXC to _Unwind_Frames_Increment. (_Unwind_ForcedUnwind_Phase2): Likewise. * config/i386/shadow-stack-unwind.h (_Unwind_Frames_Increment): Take the EXC argument. Return _URC_FATAL_PHASE2_ERROR if the return address on normal stack doesn't match the return address on shadow stack.
2022-10-17libgcc: Move cfa_how into potential padding in struct frame_state_reg_infoFlorian Weimer1-5/+6
On many architectures, there is a padding gap after the how array member, and cfa_how can be moved there. This reduces the size of the struct and the amount of memory that uw_frame_state_for has to clear. There is no measurable performance benefit from this on x86-64 (even though the memset goes from 120 to 112 bytes), but it seems to be a good idea to do anyway. libgcc/ * unwind-dw2.h (struct frame_state_reg_info): Move cfa_how member and reduce its size.
2022-10-15Daily bump.GCC Administrator1-0/+21
2022-10-14middle-end, c++, i386, libgcc: std::bfloat16_t and __bf16 arithmetic supportJakub Jelinek13-2/+580
Here is a complete patch to add std::bfloat16_t support on x86 (AArch64 and ARM left for later). Almost no BFmode optabs are added by the patch, so for binops/unops it extends to SFmode first and then truncates back to BFmode. For {HF,SF,DF,XF,TF}mode -> BFmode conversions libgcc has implementations of all those conversions so that we avoid double rounding, for BFmode -> {DF,XF,TF}mode conversions to avoid growing libgcc too much it emits BFmode -> SFmode conversion first and then converts to the even wider mode, neither step should be imprecise. For BFmode -> HFmode, it first emits a precise BFmode -> SFmode conversion and then SFmode -> HFmode, because neither format is subset or superset of the other, while SFmode is superset of both. expr.cc then contains a -ffast-math optimization of the BF -> SF and SF -> BF conversions if we don't optimize for space (and for the latter if -frounding-math isn't enabled either). For x86, perhaps truncsfbf2 optab could be defined for TARGET_AVX512BF16 but IMNSHO should FAIL if !flag_finite_math || flag_rounding_math || !flag_unsafe_math_optimizations, because I think the insn doesn't raise on sNaNs, hardcodes round to nearest and flushes denormals to zero. By default (unless x86 -fexcess-precision=16) we use float excess precision for BFmode, so truncate only on explicit casts and assignments. The patch introduces a single __bf16 builtin - __builtin_nansf16b, because (__bf16) __builtin_nansf ("") will drop the sNaN into qNaN, and uses f16b suffix instead of bf16 because there would be ambiguity on log vs. logb - __builtin_logbf16 could be either log with bf16 suffix or logb with f16 suffix. In other cases libstdc++ should mostly use __builtin_*f for std::bfloat16_t overloads (we have a problem with std::nextafter though but that one we have also for std::float16_t). 2022-10-14 Jakub Jelinek <jakub@redhat.com> gcc/ * tree-core.h (enum tree_index): Add TI_BFLOAT16_TYPE. * tree.h (bfloat16_type_node): Define. * tree.cc (excess_precision_type): Promote bfloat16_type_mode like float16_type_mode. (build_common_tree_nodes): Initialize bfloat16_type_node if BFmode is supported. * expmed.h (maybe_expand_shift): Declare. * expmed.cc (maybe_expand_shift): No longer static. * expr.cc (convert_mode_scalar): Don't ICE on BF -> HF or HF -> BF conversions. If there is no optab, handle BF -> {DF,XF,TF,HF} conversions as separate BF -> SF -> {DF,XF,TF,HF} conversions, add -ffast-math generic implementation for BF -> SF and SF -> BF conversions. * builtin-types.def (BT_BFLOAT16, BT_FN_BFLOAT16_CONST_STRING): New. * builtins.def (BUILT_IN_NANSF16B): New builtin. * fold-const-call.cc (fold_const_call): Handle CFN_BUILT_IN_NANSF16B. * config/i386/i386.cc (classify_argument): Handle E_BCmode. (ix86_libgcc_floating_mode_supported_p): Also return true for BFmode for -msse2. (ix86_mangle_type): Mangle BFmode as DF16b. (ix86_invalid_conversion, ix86_invalid_unary_op, ix86_invalid_binary_op): Remove. (TARGET_INVALID_CONVERSION, TARGET_INVALID_UNARY_OP, TARGET_INVALID_BINARY_OP): Don't redefine. * config/i386/i386-builtins.cc (ix86_bf16_type_node): Remove. (ix86_register_bf16_builtin_type): Use bfloat16_type_node rather than ix86_bf16_type_node, only create it if still NULL. * config/i386/i386-builtin-types.def (BFLOAT16): Likewise. * config/i386/i386.md (cbranchbf4, cstorebf4): New expanders. gcc/c-family/ * c-cppbuiltin.cc (c_cpp_builtins): If bfloat16_type_node, predefine __BFLT16_*__ macros and for C++23 also __STDCPP_BFLOAT16_T__. Predefine bfloat16_type_node related macros for -fbuilding-libgcc. * c-lex.cc (interpret_float): Handle CPP_N_BFLOAT16. gcc/c/ * c-typeck.cc (convert_arguments): Don't promote __bf16 to double. gcc/cp/ * cp-tree.h (extended_float_type_p): Return true for bfloat16_type_node. * typeck.cc (cp_compare_floating_point_conversion_ranks): Set extended{1,2} if mv{1,2} is bfloat16_type_node. Adjust comment. gcc/testsuite/ * lib/target-supports.exp (check_effective_target_bfloat16, check_effective_target_bfloat16_runtime, add_options_for_bfloat16): New. * gcc.dg/torture/bfloat16-basic.c: New test. * gcc.dg/torture/bfloat16-builtin.c: New test. * gcc.dg/torture/bfloat16-builtin-issignaling-1.c: New test. * gcc.dg/torture/bfloat16-complex.c: New test. * gcc.dg/torture/builtin-issignaling-1.c: Allow to be includable from bfloat16-builtin-issignaling-1.c. * gcc.dg/torture/floatn-basic.h: Allow to be includable from bfloat16-basic.c. * gcc.target/i386/vect-bfloat16-typecheck_2.c: Adjust expected diagnostics. * gcc.target/i386/sse2-bfloat16-scalar-typecheck.c: Likewise. * gcc.target/i386/vect-bfloat16-typecheck_1.c: Likewise. * g++.target/i386/bfloat_cpp_typecheck.C: Likewise. libcpp/ * include/cpplib.h (CPP_N_BFLOAT16): Define. * expr.cc (interpret_float_suffix): Handle bf16 and BF16 suffixes for C++. libgcc/ * config/i386/t-softfp (softfp_extensions): Add bfsf. (softfp_truncations): Add tfbf xfbf dfbf sfbf hfbf. (CFLAGS-extendbfsf2.c, CFLAGS-truncsfbf2.c, CFLAGS-truncdfbf2.c, CFLAGS-truncxfbf2.c, CFLAGS-trunctfbf2.c, CFLAGS-trunchfbf2.c): Add -msse2. * config/i386/libgcc-glibc.ver (GCC_13.0.0): Export __extendbfsf2 and __trunc{s,d,x,t,h}fbf2. * config/i386/sfp-machine.h (_FP_NANSIGN_B): Define. * config/i386/64/sfp-machine.h (_FP_NANFRAC_B): Define. * config/i386/32/sfp-machine.h (_FP_NANFRAC_B): Define. * soft-fp/brain.h: New file. * soft-fp/truncsfbf2.c: New file. * soft-fp/truncdfbf2.c: New file. * soft-fp/truncxfbf2.c: New file. * soft-fp/trunctfbf2.c: New file. * soft-fp/trunchfbf2.c: New file. * soft-fp/truncbfhf2.c: New file. * soft-fp/extendbfsf2.c: New file. libiberty/ * cp-demangle.h (D_BUILTIN_TYPE_COUNT): Increment. * cp-demangle.c (cplus_demangle_builtin_types): Add std::bfloat16_t entry. (cplus_demangle_type): Demangle DF16b. * testsuite/demangle-expected (_Z3xxxDF16b): New test.
2022-10-13Daily bump.GCC Administrator1-0/+6
2022-10-12gcov: rename gcov_write_summaryMartin Liska2-4/+3
gcc/ChangeLog: * gcov-io.cc (gcov_write_summary): Rename to ... (gcov_write_object_summary): ... this. * gcov-io.h (GCOV_TAG_OBJECT_SUMMARY_LENGTH): Rename from ... (GCOV_TAG_SUMMARY_LENGTH): ... this. libgcc/ChangeLog: * libgcov-driver.c: Use new function. * libgcov.h (gcov_write_summary): Rename to ... (gcov_write_object_summary): ... this.
2022-10-12Daily bump.GCC Administrator1-0/+8
2022-10-11Generic configury support for shared libs on VxWorksOlivier Hainque1-1/+30
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.
2022-10-07Daily bump.GCC Administrator1-0/+68
2022-10-07libgcc, arc: Fix buildJakub Jelinek1-1/+1
Missed one spot in the r13-3108-g146e45914032 change (my sed script didn't expect nested []s). 2022-10-07 Jakub Jelinek <jakub@redhat.com> * config/arc/linux-unwind.h (arc_fallback_frame_state): Use fs->regs.how[X] instead of fs->regs.reg[X].how.
2022-10-06libgcc: Decrease size of _Unwind_FrameState and even more size of cleared ↵Jakub Jelinek35-292/+296
area in uw_frame_state_for The following patch implements something that has Florian found as low hanging fruit in our unwinder and has been discussed in the https://gcc.gnu.org/wiki/cauldron2022#cauldron2022talks.inprocess_unwinding_bof talk. _Unwind_FrameState type seems to be (unlike the pre-GCC 3 frame_state which has been part of ABI) private to unwind-dw2.c + unwind.inc it includes, it is always defined on the stack of some entrypoints, initialized by static uw_frame_state_for and the address of it is also passed to other static functions or the static inlines handling machine dependent unwinding, but it isn't fortunately passed to any callbacks or public functions, so I think we can safely change it any time we want. Florian mentioned that the structure is large even on x86_64, 384 bytes there, starts with 328 bytes long element with frame_state_reg_info type which then starts with an array with __LIBGCC_DWARF_FRAME_REGISTERS__ + 1 elements, each of them is 16 bytes long, on x86_64 __LIBGCC_DWARF_FRAME_REGISTERS__ is just 17 but even that is big, on say riscv __LIBGCC_DWARF_FRAME_REGISTERS__ is I think 128, on powerpc 111, on sh 153 etc. And, we memset to zero the whole fs variable with the _Unwind_FrameState type at the start of the unwinding. The reason why each element is 16 byte (on 64-bit arches) is that it contains some pointer or pointer sized integer and then an enum (with just 7 different enumerators) + padding. The following patch decreases it by moving the enum into a separate array and using just one byte for each register in that second array. We could compress it even more, say 4 bits per register, but I don't want to uglify the code for it too much and make the accesses slower. Furthermore, the clearing of the object can clear only thos how array and members after it, because REG_UNSAVED enumerator (0) doesn't actually need any pointer or pointer sized integer, it is just the other kinds that need to have there something. By doing this, on x86_64 the above numbers change to _Unwind_FrameState type being now 264 bytes long, frame_state_reg_info 208 bytes and we don't clear the first 144 bytes of the object, so the memset is 120 bytes, so ~ 31% of the old clearing size. On riscv 64-bit assuming it has same structure layout rules for the few types used there that would be ~ 2160 bytes of _Unwind_FrameState type before and ~ 1264 bytes after, with the memset previously ~ 2160 bytes and after ~ 232 bytes after. We've also talked about possibly adding a number of initially initialized regs and initializing the rest lazily, but at least for x86_64 with 18 elements in the array that doesn't seem to be worth it anymore, especially because return address column is 16 there and that is usually the first thing to be touched. It might theory help with lots of registers if they are usually untouched, but would uglify and complicate any stores to how by having to check there for the not initialized yet cases and lazy initialization, and similarly for all reads of how to do there if below last initialized one, use how, otherwise imply REG_UNSAVED. The disadvantage of the patch is that touching reg[x].loc and how[x] now means 2 cachelines rather than one as before, and I admit beyond bootstrap/regtest I haven't benchmarked it in any way. 2022-10-06 Jakub Jelinek <jakub@redhat.com> * unwind-dw2.h (REG_UNSAVED, REG_SAVED_OFFSET, REG_SAVED_REG, REG_SAVED_EXP, REG_SAVED_VAL_OFFSET, REG_SAVED_VAL_EXP, REG_UNDEFINED): New anonymous enum, moved from inside of struct frame_state_reg_info. (struct frame_state_reg_info): Remove reg[].how element and the anonymous enum there. Add how element. * unwind-dw2.c: Include stddef.h. (uw_frame_state_for): Don't clear first offsetof (_Unwind_FrameState, regs.how[0]) bytes of *fs. (execute_cfa_program, __frame_state_for, uw_update_context_1, uw_update_context): Use fs->regs.how[X] instead of fs->regs.reg[X].how or fs.regs.how[X] instead of fs.regs.reg[X].how. * config/sh/linux-unwind.h (sh_fallback_frame_state): Likewise. * config/bfin/linux-unwind.h (bfin_fallback_frame_state): Likewise. * config/pa/linux-unwind.h (pa32_fallback_frame_state): Likewise. * config/pa/hpux-unwind.h (UPDATE_FS_FOR_SAR, UPDATE_FS_FOR_GR, UPDATE_FS_FOR_FR, UPDATE_FS_FOR_PC, pa_fallback_frame_state): Likewise. * config/alpha/vms-unwind.h (alpha_vms_fallback_frame_state): Likewise. * config/alpha/linux-unwind.h (alpha_fallback_frame_state): Likewise. * config/arc/linux-unwind.h (arc_fallback_frame_state, arc_frob_update_context): Likewise. * config/riscv/linux-unwind.h (riscv_fallback_frame_state): Likewise. * config/nios2/linux-unwind.h (NIOS2_REG): Likewise. * config/nds32/linux-unwind.h (NDS32_PUT_FS_REG): Likewise. * config/s390/tpf-unwind.h (s390_fallback_frame_state): Likewise. * config/s390/linux-unwind.h (s390_fallback_frame_state): Likewise. * config/sparc/sol2-unwind.h (sparc64_frob_update_context, MD_FALLBACK_FRAME_STATE_FOR): Likewise. * config/sparc/linux-unwind.h (sparc64_fallback_frame_state, sparc64_frob_update_context, sparc_fallback_frame_state): Likewise. * config/i386/sol2-unwind.h (x86_64_fallback_frame_state, x86_fallback_frame_state): Likewise. * config/i386/w32-unwind.h (i386_w32_fallback_frame_state): Likewise. * config/i386/linux-unwind.h (x86_64_fallback_frame_state, x86_fallback_frame_state): Likewise. * config/i386/freebsd-unwind.h (x86_64_freebsd_fallback_frame_state): Likewise. * config/i386/dragonfly-unwind.h (x86_64_dragonfly_fallback_frame_state): Likewise. * config/i386/gnu-unwind.h (x86_gnu_fallback_frame_state): Likewise. * config/csky/linux-unwind.h (csky_fallback_frame_state): Likewise. * config/aarch64/linux-unwind.h (aarch64_fallback_frame_state): Likewise. * config/aarch64/freebsd-unwind.h (aarch64_freebsd_fallback_frame_state): Likewise. * config/aarch64/aarch64-unwind.h (aarch64_frob_update_context): Likewise. * config/or1k/linux-unwind.h (or1k_fallback_frame_state): Likewise. * config/mips/linux-unwind.h (mips_fallback_frame_state): Likewise. * config/loongarch/linux-unwind.h (loongarch_fallback_frame_state): Likewise. * config/m68k/linux-unwind.h (m68k_fallback_frame_state): Likewise. * config/xtensa/linux-unwind.h (xtensa_fallback_frame_state): Likewise. * config/rs6000/darwin-fallback.c (set_offset): Likewise. * config/rs6000/aix-unwind.h (MD_FROB_UPDATE_CONTEXT): Likewise. * config/rs6000/linux-unwind.h (ppc_fallback_frame_state): Likewise. * config/rs6000/freebsd-unwind.h (frob_update_context): Likewise.
2022-10-03Daily bump.GCC Administrator1-0/+11
2022-10-02Adjust LIBGCC2_INCLUDES for VxWorks and augment commentOlivier Hainque1-8/+28
Investigating the reasons for libgcc build failures in a canadian context, orthogonally to the recent update of vxcrtstuff, exposed interesting differences in the way include search paths are managed between a regular Linux->VxWorks cross build and a canadian setup building a Windows->VxWorks toolchain in a Linux environment. This change augments the comment attached to LIBGCC2_INCLUDE in libgcc/config/t-vxworks to better describe the parameters at play. It also adjusts the addition of options for gcc/include and gcc/include-fixed to minimize the actual differences for libgcc in the two kinds of configurations. 2022-03-06 Olivier Hainque <hainque@adacore.com> libgcc/ * config/t-vxworks (LIBGCC2_INCLUDE): Augment comment. Move -I options for gcc/include and gcc/include-fixed at the end and make them -isystem.
2022-10-02Prevent secondary warning from diagnostic tweak in gthr-vxworks.hOlivier Hainque1-1/+4
Within gthr-vxworks.h, we prevent C++ errors from missing declarations in some system headers by prepending their inclusion with a #pragma GCC diagnostic ignored "-Wstrict-prototypes" But Wstrict-prototypes is internally registered as valid for C/ObjC only, not C++, and this trick in turn triggers a Wpragma warning with -Wsystem-headers. This change just arranges to ignore the secondary warning locally. 2021-02-03 Olivier Hainque <hainque@adacore.com> * config/gthr-vxworks.h: Prevent Wpragma warning for the pragma diagnostics on Wstrict-prototypes.
2022-09-30Daily bump.GCC Administrator1-0/+6
2022-09-29Improve comments and INITFINI macro use in vxcrtsutff.cOlivier Hainque1-8/+16
This change augments the comment attached to the use of auto-host.h in vxcrtstuff.c to better describe the reason for including it and for the associated series of #undef directives. It also augments the comment on dso_handle and removes a redundant guard on HAVE_INITFINI_ARRAY_SUPPORT for the shared version of the objects, nested within a section guarded on USE_INITFINI_ARRAY. 2022-09-29 Olivier Hainque <hainque@adacore.com> libgcc/ * config/vxcrtstuff.c: Improve the comment attached to the use of auto-host.h and of __dso_handle. Remove redundant guard on HAVE_INITFINI_ARRAY_SUPPORT within a USE_INITFINI_ARRAY section.
2022-09-27Daily bump.GCC Administrator1-0/+5
2022-09-26fix assert in __deregister_frame_info_basesThomas Neumann1-1/+3
When using the atomic fast path deregistering can fail during program shutdown if the lookup structures are already destroyed. The assert in __deregister_frame_info_bases takes that into account. In the non-fast-path case however is not aware of program shutdown, which caused a compiler error on such platforms. We fix that by introducing a constant for in_shutdown in non-fast-path builds. We also drop the destructor priority, as it is not supported on all platforms and we no longer rely upon the priority anyway. libgcc/ChangeLog: * unwind-dw2-fde.c: Introduce a constant for in_shutdown for the non-fast-path case. Drop destructor priority.
2022-09-23Daily bump.GCC Administrator1-0/+7
2022-09-23Avoid depending on destructor orderThomas Neumann1-1/+3
In some scenarios (e.g., when mixing gcc and clang code), it can happen that frames are deregistered after the lookup structure has already been destroyed. That in itself would be fine, but it triggers an assert in __deregister_frame_info_bases that expects to find the frame. To avoid that, we now remember that the btree as already been destroyed and disable the assert in that case. libgcc/ChangeLog: * unwind-dw2-fde.c: (release_register_frames) Remember when the btree has been destroyed. (__deregister_frame_info_bases) Disable the assert when shutting down.
2022-09-20Daily bump.GCC Administrator1-0/+6
2022-09-19Fix PR target/99184: Wrong cast from double to 16-bit and 32-bit intsGeorg-Johann Lay1-50/+0
this patch fixed PR target/99184 which incorrectly rounded during 64-bit (long) double to 16-bit and 32-bit integers. The patch just removes the respective roundings from libf7-asm.sx::to_integer and ::to_unsigned. Luckily, LibF7 does nowhere use respective functions internally, the only user is in libf7.c::f7_exp which reads f7_round (qq, qq); int16_t q = f7_get_s16 (qq); so that f7_get_s16() operates on an already rounded value, and therefore this code works unaltered with or without rounding in to_integer. PR target/99184 libgcc/config/avr/libf7/ * libf7-asm.sx (to_integer, to_unsigned): Don't round 16-bit and 32-bit integers.
2022-09-19Daily bump.GCC Administrator1-0/+6
2022-09-18Remove dependency on uintptr_t in libgccThomas Neumann2-42/+45
uintptr_t is no available for all targets, use __UINTPTR_TYPE__ instead. libgcc/ChangeLog: * unwind-dw2-fde.c: Replace uintptr_t with typedef for __UINTPTR_TYPE__. * unwind-dw2-btree.h: Likewise.
2022-09-17Daily bump.GCC Administrator1-0/+12
2022-09-17eliminate mutex in fast path of __register_frameThomas Neumann3-51/+1098
The __register_frame/__deregister_frame functions are used to register unwinding frames from JITed code in a sorted list. That list itself is protected by object_mutex, which leads to terrible performance in multi-threaded code and is somewhat expensive even if single-threaded. There was already a fast-path that avoided taking the mutex if no frame was registered at all. This commit eliminates both the mutex and the sorted list from the atomic fast path, and replaces it with a btree that uses optimistic lock coupling during lookup. This allows for fully parallel unwinding and is essential to scale exception handling to large core counts. libgcc/ChangeLog: * unwind-dw2-fde.c (release_registered_frames): Cleanup at shutdown. (__register_frame_info_table_bases): Use btree in atomic fast path. (__deregister_frame_info_bases): Likewise. (_Unwind_Find_FDE): Likewise. (base_from_object): Make parameter const. (classify_object_over_fdes): Add query-only mode. (get_pc_range): Compute PC range for lookup. * unwind-dw2-fde.h (last_fde): Make parameter const. * unwind-dw2-btree.h: New file.
2022-09-01Daily bump.GCC Administrator1-0/+4
2022-08-3132-bit PA-RISC with HP-UX: remove deprecated portsMartin Liska1-22/+0
ChangeLog: * configure: Regenerate. * configure.ac: Delete hpux9 and hpux10. config/ChangeLog: * mh-pa-hpux10: Removed. contrib/ChangeLog: * config-list.mk: Remove deprecated ports. contrib/header-tools/ChangeLog: * README: Remove deprecated ports. * reduce-headers: Likewise. gcc/ChangeLog: * config.build: Remove deprecated ports. * config.gcc: Likewise. * config.host: Likewise. * configure.ac: Likewise. * configure: Regenerate. * config/pa/pa-hpux10.h: Removed. * config/pa/pa-hpux10.opt: Removed. * config/pa/t-dce-thr: Removed. gnattools/ChangeLog: * configure.ac: Remove deprecated ports. * configure: Regenerate. libstdc++-v3/ChangeLog: * configure: Regenerate. * crossconfig.m4: Remove deprecated ports. gcc/testsuite/ChangeLog: * g++.dg/cpp0x/lambda/lambda-conv.C: Remove useless test. * gcc.c-torture/execute/ieee/hugeval.x: Likewise. * gcc.dg/torture/pr47917.c: Likewise. * lib/target-supports.exp: Likewise. libgcc/ChangeLog: * config.host: Remove hppa. libitm/ChangeLog: * configure: Regenerate. fixincludes/ChangeLog: * configure: Regenerate.
2022-08-31Daily bump.GCC Administrator1-0/+4
2022-08-30m32c-rtems: remove obsoleted portMartin Liska1-1/+1
contrib/ChangeLog: * config-list.mk: Remove the port. gcc/ChangeLog: * config.gcc: Remove the port. * config/m32c/rtems.h: Removed. libgcc/ChangeLog: * config.host: Remove the port.
2022-08-27Daily bump.GCC Administrator1-0/+13
2022-08-26cr16: remove obsoleted portMartin Liska10-2623/+0
contrib/ChangeLog: * config-list.mk: Remove cr16. gcc/ChangeLog: * doc/extend.texi: Remove cr16 related stuff. * doc/install.texi: Likewise. * doc/invoke.texi: Likewise. * doc/md.texi: Likewise. * function-tests.cc (test_expansion_to_rtl): Likewise. * common/config/cr16/cr16-common.cc: Removed. * config/cr16/constraints.md: Removed. * config/cr16/cr16-protos.h: Removed. * config/cr16/cr16.cc: Removed. * config/cr16/cr16.h: Removed. * config/cr16/cr16.md: Removed. * config/cr16/cr16.opt: Removed. * config/cr16/predicates.md: Removed. * config/cr16/t-cr16: Removed. libgcc/ChangeLog: * config.host: Remove cr16 related stuff. * config/cr16/crti.S: Removed. * config/cr16/crtlibid.S: Removed. * config/cr16/crtn.S: Removed. * config/cr16/divmodhi3.c: Removed. * config/cr16/lib1funcs.S: Removed. * config/cr16/t-cr16: Removed. * config/cr16/t-crtlibid: Removed. * config/cr16/unwind-cr16.c: Removed. * config/cr16/unwind-dw2.h: Removed. gcc/testsuite/ChangeLog: * lib/target-supports.exp: Remove cr16 related stuff.
2022-08-17Daily bump.GCC Administrator1-0/+118
2022-08-16RISC-V: Support _Float16 type.Kito Cheng3-0/+9
RISC-V decide use _Float16 as primary IEEE half precision type, and this already become part of psABI, this patch has added folloing support for _Float16: - Soft-float support for _Float16. - Make sure _Float16 available on C++ mode. - Name mangling for _Float16 on C++ mode. gcc/ChangeLog * config/riscv/riscv-builtins.cc: include stringpool.h (riscv_float16_type_node): New. (riscv_init_builtin_types): Ditto. (riscv_init_builtins): Call riscv_init_builtin_types. * config/riscv/riscv-modes.def (HF): New. * config/riscv/riscv.cc (riscv_output_move): Handle HFmode. (riscv_mangle_type): New. (riscv_scalar_mode_supported_p): Ditto. (riscv_libgcc_floating_mode_supported_p): Ditto. (riscv_excess_precision): Ditto. (riscv_floatn_mode): Ditto. (riscv_init_libfuncs): Ditto. (TARGET_MANGLE_TYPE): Ditto. (TARGET_SCALAR_MODE_SUPPORTED_P): Ditto. (TARGET_LIBGCC_FLOATING_MODE_SUPPORTED_P): Ditto. (TARGET_INIT_LIBFUNCS): Ditto. (TARGET_C_EXCESS_PRECISION): Ditto. (TARGET_FLOATN_MODE): Ditto. * config/riscv/riscv.md (mode): Add HF. (softload): Add HF. (softstore): Ditto. (fmt): Ditto. (UNITMODE): Ditto. (movhf): New. (*movhf_softfloat): New. libgcc/ChangeLog: * config/riscv/sfp-machine.h (_FP_NANFRAC_H): New. (_FP_NANFRAC_H): Ditto. (_FP_NANSIGN_H): Ditto. * config/riscv/t-softfp32 (softfp_extensions): Add HF related routines. (softfp_truncations): Ditto. (softfp_extras): Ditto. * config/riscv/t-softfp64 (softfp_extras): Add HF related routines. gcc/testsuite/ChangeLog: * g++.target/riscv/_Float16.C: New. * gcc.target/riscv/_Float16-soft-1.c: Ditto. * gcc.target/riscv/_Float16-soft-2.c: Ditto. * gcc.target/riscv/_Float16-soft-3.c: Ditto. * gcc.target/riscv/_Float16-soft-4.c: Ditto. * gcc.target/riscv/_Float16.c: Ditto.
2022-08-16soft-fp: Update soft-fp from glibcKito Cheng103-345/+545
This patch is updating all soft-fp from glibc, most changes are copyright years update, removing "Contributed by" lines and update URL for license, and changes other than those update are adding conversion function between IEEE half and 32-bit/64-bit integer, those functions are required by RISC-V _Float16 support. libgcc/ChangeLog: * soft-fp/fixhfdi.c: New. * soft-fp/fixhfsi.c: Likewise. * soft-fp/fixunshfdi.c: Likewise. * soft-fp/fixunshfsi.c: Likewise. * soft-fp/floatdihf.c: Likewise. * soft-fp/floatsihf.c: Likewise. * soft-fp/floatundihf.c: Likewise. * soft-fp/floatunsihf.c: Likewise. * soft-fp/adddf3.c: Updating copyright years, removing "Contributed by" lines and update URL for license. * soft-fp/addsf3.c: Likewise. * soft-fp/addtf3.c: Likewise. * soft-fp/divdf3.c: Likewise. * soft-fp/divsf3.c: Likewise. * soft-fp/divtf3.c: Likewise. * soft-fp/double.h: Likewise. * soft-fp/eqdf2.c: Likewise. * soft-fp/eqhf2.c: Likewise. * soft-fp/eqsf2.c: Likewise. * soft-fp/eqtf2.c: Likewise. * soft-fp/extenddftf2.c: Likewise. * soft-fp/extended.h: Likewise. * soft-fp/extendhfdf2.c: Likewise. * soft-fp/extendhfsf2.c: Likewise. * soft-fp/extendhftf2.c: Likewise. * soft-fp/extendhfxf2.c: Likewise. * soft-fp/extendsfdf2.c: Likewise. * soft-fp/extendsftf2.c: Likewise. * soft-fp/extendxftf2.c: Likewise. * soft-fp/fixdfdi.c: Likewise. * soft-fp/fixdfsi.c: Likewise. * soft-fp/fixdfti.c: Likewise. * soft-fp/fixhfti.c: Likewise. * soft-fp/fixsfdi.c: Likewise. * soft-fp/fixsfsi.c: Likewise. * soft-fp/fixsfti.c: Likewise. * soft-fp/fixtfdi.c: Likewise. * soft-fp/fixtfsi.c: Likewise. * soft-fp/fixtfti.c: Likewise. * soft-fp/fixunsdfdi.c: Likewise. * soft-fp/fixunsdfsi.c: Likewise. * soft-fp/fixunsdfti.c: Likewise. * soft-fp/fixunshfti.c: Likewise. * soft-fp/fixunssfdi.c: Likewise. * soft-fp/fixunssfsi.c: Likewise. * soft-fp/fixunssfti.c: Likewise. * soft-fp/fixunstfdi.c: Likewise. * soft-fp/fixunstfsi.c: Likewise. * soft-fp/fixunstfti.c: Likewise. * soft-fp/floatdidf.c: Likewise. * soft-fp/floatdisf.c: Likewise. * soft-fp/floatditf.c: Likewise. * soft-fp/floatsidf.c: Likewise. * soft-fp/floatsisf.c: Likewise. * soft-fp/floatsitf.c: Likewise. * soft-fp/floattidf.c: Likewise. * soft-fp/floattihf.c: Likewise. * soft-fp/floattisf.c: Likewise. * soft-fp/floattitf.c: Likewise. * soft-fp/floatundidf.c: Likewise. * soft-fp/floatundisf.c: Likewise. * soft-fp/floatunditf.c: Likewise. * soft-fp/floatunsidf.c: Likewise. * soft-fp/floatunsisf.c: Likewise. * soft-fp/floatunsitf.c: Likewise. * soft-fp/floatuntidf.c: Likewise. * soft-fp/floatuntihf.c: Likewise. * soft-fp/floatuntisf.c: Likewise. * soft-fp/floatuntitf.c: Likewise. * soft-fp/gedf2.c: Likewise. * soft-fp/gesf2.c: Likewise. * soft-fp/getf2.c: Likewise. * soft-fp/half.h: Likewise. * soft-fp/ledf2.c: Likewise. * soft-fp/lesf2.c: Likewise. * soft-fp/letf2.c: Likewise. * soft-fp/muldf3.c: Likewise. * soft-fp/mulsf3.c: Likewise. * soft-fp/multf3.c: Likewise. * soft-fp/negdf2.c: Likewise. * soft-fp/negsf2.c: Likewise. * soft-fp/negtf2.c: Likewise. * soft-fp/op-1.h: Likewise. * soft-fp/op-2.h: Likewise. * soft-fp/op-4.h: Likewise. * soft-fp/op-8.h: Likewise. * soft-fp/op-common.h: Likewise. * soft-fp/quad.h: Likewise. * soft-fp/single.h: Likewise. * soft-fp/soft-fp.h: Likewise. * soft-fp/subdf3.c: Likewise. * soft-fp/subsf3.c: Likewise. * soft-fp/subtf3.c: Likewise. * soft-fp/truncdfhf2.c: Likewise. * soft-fp/truncdfsf2.c: Likewise. * soft-fp/truncsfhf2.c: Likewise. * soft-fp/trunctfdf2.c: Likewise. * soft-fp/trunctfhf2.c: Likewise. * soft-fp/trunctfsf2.c: Likewise. * soft-fp/trunctfxf2.c: Likewise. * soft-fp/truncxfhf2.c: Likewise. * soft-fp/unorddf2.c: Likewise. * soft-fp/unordsf2.c: Likewise. * soft-fp/unordtf2.c: Likewise.
2022-07-19Daily bump.GCC Administrator1-0/+6
2022-07-18libgcc/arc: Update udivmodsi4 and make the lib safe for rf16Claudiu Zissulescu2-1/+3
The ARC soft udivmodsi4 algorithm and as well as using umodsi3 for reduced register set configurations are wrong. libgcc/ * config/arc/lib2funcs.c (udivmodsi4): Update AND mask. * config/arc/lib1funcs.S (umodsi3): Don't use it for RF16 configurations.
2022-06-26Daily bump.GCC Administrator1-0/+18
2022-06-25Remove long deprecated tilegx and tilepro portsJeff Law15-1669/+0
/ * MAINTAINERS: Remove tilegx and tilepro entries. * configure.ac: Remove tilegx and tilepro stanzas. * configure: Rebuilt. contrib/ * config-list.mk: Remove tilegx and tilepro entries. * gcc_update: Remove tilegx and tilepro entries. gcc/ * common/config/tilegx/tilegx-common.cc: Removed. * common/config/tilepro/tilepro-common.cc: Removed. * config.gcc: Remove tilegx and tilepro entries. * config/tilegx/constraints.md: Removed. * config/tilegx/feedback.h: Removed. * config/tilegx/linux.h: Removed. * config/tilegx/mul-tables.cc: Removed. * config/tilegx/predicates.md: Removed. * config/tilegx/sync.md: Removed. * config/tilegx/t-tilegx: Removed. * config/tilegx/tilegx-builtins.h: Removed. * config/tilegx/tilegx-c.cc: Removed. * config/tilegx/tilegx-generic.md: Removed. * config/tilegx/tilegx-modes.def: Removed. * config/tilegx/tilegx-multiply.h: Removed. * config/tilegx/tilegx-opts.h: Removed. * config/tilegx/tilegx-protos.h: Removed. * config/tilegx/tilegx.cc: Removed. * config/tilegx/tilegx.h: Removed. * config/tilegx/tilegx.md: Removed. * config/tilegx/tilegx.opt: Removed. * config/tilepro/constraints.md: Removed. * config/tilepro/feedback.h: Removed. * config/tilepro/gen-mul-tables.cc: Removed. * config/tilepro/linux.h: Removed. * config/tilepro/mul-tables.cc: Removed. * config/tilepro/predicates.md: Removed. * config/tilepro/t-tilepro: Removed. * config/tilepro/tilepro-builtins.h: Removed. * config/tilepro/tilepro-c.cc: Removed. * config/tilepro/tilepro-generic.md: Removed. * config/tilepro/tilepro-modes.def: Removed. * config/tilepro/tilepro-multiply.h: Removed. * config/tilepro/tilepro-protos.h: Removed. * config/tilepro/tilepro.cc: Removed. * config/tilepro/tilepro.h: Removed. * config/tilepro/tilepro.md: Removed. * config/tilepro/tilepro.opt: Removed. * configure.ac: Remove tilegx and tilepro entries. * configure: Rebuilt. * doc/extend.texi: Remove tilegx and tilepro entries. * doc/install.texi: Remove tilegx and tilepro entries. * doc/invoke.texi: Remove tilegx and tilepro entries. * doc/md.texi: Remove tilegx and tilepro entries. gcc/testsuite/ * gcc.dg/lower-subreg-1.c: Remove tilegx and tilepro entries. * gcc.misc-tests/linkage.exp: Remove tilegx and tilepro entries. libgcc/ * config.host: Removed tilegx and tilepro entries. * config/tilegx/sfp-machine.h: Removed. * config/tilegx/sfp-machine32.h: Removed. * config/tilegx/sfp-machine64.h: Removed. * config/tilegx/t-crtstuff: Removed. * config/tilegx/t-softfp: Removed. * config/tilegx/t-tilegx: Removed. * config/tilepro/atomic.c: Removed. * config/tilepro/atomic.h: Removed. * config/tilepro/linux-unwind.h: Removed. * config/tilepro/sfp-machine.h: Removed. * config/tilepro/softdivide.c: Removed. * config/tilepro/softmpy.S: Removed. * config/tilepro/t-crtstuff: Removed. * config/tilepro/t-tilepro: Removed.
2022-06-10Daily bump.GCC Administrator1-0/+5
2022-06-09xtensa: Add clrsbsi2 insn patternTakayuki 'January June' Suwa2-1/+24
> (clrsb:m x) > Represents the number of redundant leading sign bits in x, represented > as an integer of mode m, starting at the most significant bit position. This explanation is just what the NSA instruction (not ever emitted before) calculates in Xtensa ISA. gcc/ChangeLog: * config/xtensa/xtensa.md (clrsbsi2): New insn pattern. libgcc/ChangeLog: * config/xtensa/lib1funcs.S (__clrsbsi2): New function. * config/xtensa/t-xtensa (LIB1ASMFUNCS): Add _clrsbsi2.
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