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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.
2022-06-02Daily bump.GCC Administrator1-0/+5
2022-06-01libgcc: Align __EH_FRAME_BEGIN__ to pointer sizeH.J. Lu1-1/+2
Aligne __EH_FRAME_BEGIN__ to pointer size since gcc/unwind-dw2-fde.h has /* The first few fields of a CIE. The CIE_id field is 0 for a CIE, to distinguish it from a valid FDE. FDEs are aligned to an addressing unit boundary, but the fields within are unaligned. */ struct dwarf_cie { uword length; sword CIE_id; ubyte version; unsigned char augmentation[]; } __attribute__ ((packed, aligned (__alignof__ (void *)))); /* The first few fields of an FDE. */ struct dwarf_fde { uword length; sword CIE_delta; unsigned char pc_begin[]; } __attribute__ ((packed, aligned (__alignof__ (void *)))); which indicates that CIE/FDE should be aligned at the pointer size. PR libgcc/27576 * crtstuff.c (__EH_FRAME_BEGIN__): Aligned to pointer size.
2022-05-26Daily bump.GCC Administrator1-0/+12
2022-05-25AArch64: Prioritise init_have_lse_atomics constructor [PR 105708]Wilco Dijkstra1-1/+3
Increase the priority of the init_have_lse_atomics constructor so it runs before other constructors. This improves chances that rr works when LSE atomics are supported. libgcc/ PR libgcc/105708 * config/aarch64/lse-init.c: Increase constructor priority.
2022-05-25aarch64: Fix pac-ret with unusual dwarf in libgcc unwinder [PR104689]Szabolcs Nagy2-2/+10
The RA_SIGN_STATE dwarf pseudo-register is normally only set using the DW_CFA_AARCH64_negate_ra_state (== DW_CFA_window_save) operation which toggles the return address signedness state (the default state is 0). (It may be set by remember/restore_state CFI too, those save/restore the state of all registers.) However RA_SIGN_STATE can be set directly via DW_CFA_val_expression too. GCC does not generate such CFI but some other compilers reportedly do. Note: the toggle operation must not be mixed with other dwarf register rule CFI within the same CIE and FDE. In libgcc we assume REG_UNSAVED means the RA_STATE is set using toggle operations, otherwise we assume its value is set by other CFI. libgcc/ChangeLog: PR target/104689 * config/aarch64/aarch64-unwind.h (aarch64_frob_update_context): Handle the !REG_UNSAVED case. * unwind-dw2.c (execute_cfa_program): Fail toggle if !REG_UNSAVED. gcc/testsuite/ChangeLog: PR target/104689 * gcc.target/aarch64/pr104689.c: New test.
2022-05-21Daily bump.GCC Administrator2-0/+62
2022-05-20libgcc: use __builtin_clz and __builtin_ctz in libbidChristophe Lyon1-47/+4
This patch replaces libbid's implementations of clz and ctz for 32 and 64 bits inputs which used several masks, and switches to the corresponding builtins. This will provide a better implementation, especially on targets with clz/ctz instructions. 2022-05-06 Christophe Lyon <christophe.lyon@arm.com> libgcc/config/libbid/ChangeLog: * bid_binarydecimal.c (CLZ32_MASK16): Delete. (CLZ32_MASK8): Delete. (CLZ32_MASK4): Delete. (CLZ32_MASK2): Delete. (CLZ32_MASK1): Delete. (clz32_nz): Use __builtin_clz. (ctz32_1bit): Delete. (ctz32): Use __builtin_ctz. (CLZ64_MASK32): Delete. (CLZ64_MASK16): Delete. (CLZ64_MASK8): Delete. (CLZ64_MASK4): Delete. (CLZ64_MASK2): Delete. (CLZ64_MASK1): Delete. (clz64_nz): Use __builtin_clzl. (ctz64_1bit): Delete. (ctz64): Use __builtin_ctzl.
2022-05-20libgcc: Add support for HF mode (aka _Float16) in libbidChristophe Lyon8-5/+256
This patch adds support for trunc and extend operations between HF mode (_Float16) and Decimal Floating Point formats (_Decimal32, _Decimal64 and _Decimal128). For simplicity we rely on the implicit conversions inserted by the compiler between HF and SD/DF/TF modes. The existing bid*_to_binary* and binary*_to_bid* functions are non-trivial and at this stage it is not clear if there is a performance-critical use case involving _Float16 and _Decimal* formats. The patch also adds two executable tests, to make sure the right functions are called, available (link phase) and functional. Tested on aarch64 and x86_64. The number of symbol matches in the testcases includes the .global XXX to avoid having to match different call instructions for different targets. 2022-05-04 Christophe Lyon <christophe.lyon@arm.com> libgcc/ChangeLog: * Makefile.in (D32PBIT_FUNCS): Add _hf_to_sd and _sd_to_hf. (D64PBIT_FUNCS): Add _hf_to_dd and _dd_to_hf. (D128PBIT_FUNCS): Add _hf_to_td _td_to_hf. libgcc/config/libbid/ChangeLog: * bid_gcc_intrinsics.h (LIBGCC2_HAS_HF_MODE): Define according to __LIBGCC_HAS_HF_MODE__. (BID_HAS_HF_MODE): Define. (HFtype): Define. (__bid_extendhfsd): New prototype. (__bid_extendhfdd): Likewise. (__bid_extendhftd): Likewise. (__bid_truncsdhf): Likewise. (__bid_truncddhf): Likewise. (__bid_trunctdhf): Likewise. * _dd_to_hf.c: New file. * _hf_to_dd.c: New file. * _hf_to_sd.c: New file. * _hf_to_td.c: New file. * _sd_to_hf.c: New file. * _td_to_hf.c: New file. gcc/testsuite/ChangeLog: * gcc.dg/torture/convert-dfp-2.c: New test. * gcc.dg/torture/convert-dfp.c: New test.
2022-05-20libgcc: enable DFP for AArch64Christophe Lyon1-0/+6
DFP support on AArch64 relies on libgcc, so enable its DFP routines for all AArch64 targets. 2022-03-31 Christophe Lyon <christophe.lyon@arm.com> libgcc/ * config.host: Add t-dfprules to AArch64 targets.
2022-05-20libgcc: Enable XF mode conversions to/from DFP modes only if supportedChristophe Lyon6-0/+12
Some targets do not support XF mode (eg AArch64), so don't build the corresponding to/from DFP modes convertion routines if __LIBGCC_HAS_XF_MODE__ is not defined. 2022-03-31 Christophe Lyon <christophe.lyon@arm.com> libgcc/config/libbid/ * _dd_to_xf.c: Check __LIBGCC_HAS_XF_MODE__. * _sd_to_xf.c: Likewise. * _td_to_xf.c: Likewise. * _xf_to_dd.c: Likewise. * _xf_to_sd.c: Likewise. * _xf_to_td.c: Likewise.
2022-05-20aarch64: Enable DFP (Decimal Floating-point) (BID format)Christophe Lyon1-1/+2
This patch enables DFP support on aarch64, by updating config/dfp.m4 and regenerating the involved configure scripts. We enable the BID format. 2022-03-31 Christophe Lyon <christophe.lyon@arm.com> config/ * dfp.m4: Add aarch64 support. gcc/ * configure: Regenerate. libdecnumber/ * configure: Regenerate. libgcc/ * configure: Regenerate.
2022-05-14Daily bump.GCC Administrator1-0/+6
2022-05-13[AArch64] add barriers to ool __sync builtinsSebastian Pop2-8/+42
2022-05-13 Sebastian Pop <spop@amazon.com> gcc/ PR target/105162 * config/aarch64/aarch64-protos.h (atomic_ool_names): Increase dimension of str array. * config/aarch64/aarch64.cc (aarch64_atomic_ool_func): Call memmodel_from_int and handle MEMMODEL_SYNC_*. (DEF0): Add __aarch64_*_sync functions. gcc/testsuite/ PR target/105162 * gcc.target/aarch64/sync-comp-swap-ool.c: New. * gcc.target/aarch64/sync-op-acquire-ool.c: New. * gcc.target/aarch64/sync-op-full-ool.c: New. * gcc.target/aarch64/target_attr_20.c: Update check. * gcc.target/aarch64/target_attr_21.c: Same. libgcc/ PR target/105162 * config/aarch64/lse.S: Define BARRIER and handle memory MODEL 5. * config/aarch64/t-lse: Add a 5th memory model for _sync functions.
2022-05-11Daily bump.GCC Administrator1-0/+7
2022-05-10libgcov: use proper type for n_functionsMartin Liska1-1/+1
gcov_info::n_functions type is initialized by generated code in build_info_type: /* n_functions */ field = build_decl (BUILTINS_LOCATION, FIELD_DECL, NULL_TREE, get_gcov_unsigned_t ()); It uses gcov_unsigned_t, but the struct definition in libgcov.h uses unsigned type. That brings troubled on 16-bit targets. PR gcov-profile/105535 libgcc/ChangeLog: * libgcov.h (struct gcov_info): Use gcov_unsigned_t for n_functions. Co-Authored-By: Hans-Peter Helfert <peter-helfert@t-online.de>
2022-05-03Daily bump.GCC Administrator1-0/+4
2022-05-02libgcov: add ATTRIBUTE_UNUSED for dump_stringMartin Liska1-0/+1
Mitigates the following clang warning: libgcc/libgcov-driver.c:416:1: warning: unused function 'dump_string' [-Wunused-function] libgcc/ChangeLog: * libgcov-driver.c: Add ATTRIBUTE_UNUSED.
2022-04-29Daily bump.GCC Administrator1-0/+65
2022-04-28gcov: Use xstrerror()Sebastian Huber1-2/+2
libgcc/ * libgcov-util.c (ftw_read_file): Improve notice using xstrerror(). (gcov_profile_merge_stream): Likewise.
2022-04-28gcov-tool: Add merge-stream subcommandSebastian Huber1-0/+95
gcc/ * doc/gcov-tool.texi: Document merge-stream subcommand. * doc/invoke.texi (fprofile-info-section): Mention merge-stream subcommand of gcov-tool. * gcov-tool.cc (gcov_profile_merge_stream): Declare. (print_merge_stream_usage_message): New. (merge_stream_usage): Likewise. (do_merge_stream): Likewise. (print_usage): Call print_merge_stream_usage_message(). (main): Call do_merge_stream() to execute merge-stream subcommand. libgcc/ * libgcov-util.c (consume_stream): New. (get_target_profiles_for_merge): Likewise. (gcov_profile_merge_stream): Likewise.
2022-04-28gcov: Fix integer types in ftw_read_file()Sebastian Huber1-2/+2
libgcc/ * libgcov-util.c (ftw_read_file): Use size_t for strlen() variables.
2022-04-28gcov: Move gcov_open() to caller of read_gcda_file()Sebastian Huber1-9/+7
This allows to reuse read_gcda_file() to read multiple objects from a single file. libgcc/ * libgcov-util.c (read_gcda_file): Do not open file. (ftw_read_file): Open file here.
2022-04-28gcov: Move prepend to list to read_gcda_file()Sebastian Huber1-7/+4
This helps to reuse read_gcda_file(). libgcc/ * libgcov-util.c (read_gcda_file): Prepend new info object to global list. (ftw_read_file): Remove list append here.
2022-04-28gcov: Use xstrdup()Sebastian Huber1-7/+2
Move duplication of filename to caller and use xstrdup() instead of custom code. This helps to reuse read_gcda_file() for other purposes. libgcc/ * libgcov-util.c (read_gcda_file): Do not duplicate filename. (ftw_read_file): Duplicate filename for read_gcda_file().
2022-04-28gcov: Add __gcov_filename_to_gcfn()Sebastian Huber2-2/+47
gcc/ * doc/invoke.texi (fprofile-info-section): Mention __gcov_filename_to_gcfn(). Use "freestanding" to match with C11 standard language. Fix minor example code issues. * gcov-io.h (GCOV_FILENAME_MAGIC): Define and document. gcc/testsuite/ * gcc.dg/gcov-info-to-gcda.c: Test __gcov_filename_to_gcfn(). libgcc/ * gcov.h (__gcov_info_to_gcda): Mention __gcov_filename_to_gcfn(). (__gcov_filename_to_gcfn): Declare and document. * libgcov-driver.c (dump_string): New. (__gcov_filename_to_gcfn): Likewise. (__gcov_info_to_gcda): Adjust comment to match C11 standard language.
2022-04-28gcov: Make gcov_seek() staticSebastian Huber1-2/+0
This function is only used by gcov_write_length() in the gcov-io.cc file. gcc/ * gcov-io.cc (gcov_seek): Make it static. * gcov-io.h (struct gcov_summary): Do not mention gcov_seek(). libgcc/ * libgcov.h (gcov_seek): Remove define and declaration.
2022-04-28gcov: Add open mode parameter to gcov_do_dump()Sebastian Huber2-9/+10
gcc/ * gcov-tool.cc (gcov_do_dump): Add mode parameter. (gcov_output_files): Open files for reading and writing. libgcc/ * libgcov-driver-system.c (gcov_exit_open_gcda_file): Add mode parameter. Pass mode to gcov_open() calls. * libgcov-driver.c (dump_one_gcov): Add mode parameter. Pass mode to gcov_exit_open_gcda_file() call. (gcov_do_dump): Add mode parameter. Pass mode to dump_one_gcov() calls. (__gcov_dump_one): Open file for reading and writing.
2022-04-28gcov: Add mode to all gcov_open()Sebastian Huber3-4/+3
gcc/ * gcov-io.cc (gcov_open): Always use the mode parameter. * gcov-io.h (gcov_open): Declare it unconditionally. libgcc/ * libgcov-driver-system.c (gcov_exit_open_gcda_file): Open file for reading and writing. * libgcov-util.c (read_gcda_file): Open file for reading. * libgcov.h (gcov_open): Delete declaration.
2022-04-28gcov-tool: Allow merging of empty profile listsSebastian Huber1-8/+11
The gcov_profile_merge() already had code to deal with profile information which had no counterpart to merge with. For profile information from files with no associated counterpart, the profile information is simply used as is with the weighting transformation applied. Make sure that gcov_profile_merge() works with an empty target profile list. Return the merged profile list. gcc/ * gcov-tool.cc (gcov_profile_merge): Adjust return type. (profile_merge): Allow merging of directories which contain no profile files. libgcc/ * libgcov-util.c (gcov_profile_merge): Return the list of merged profiles. Accept empty target and source profile lists.
2022-04-09Daily bump.GCC Administrator1-0/+4
2022-04-08libgcc: IA64: don't compile glibc-based unwinder without libc headersSergei Trofimovich1-0/+2
In --without-headers mode gcc fails to bootstrap on libgcc as: /build/build/./gcc/xgcc -B/build/build/./gcc/ ... -Dinhibit_libc -c fde-glibc.c ../../../gcc-12-20220403/libgcc/config/ia64/fde-glibc.c:33:10: fatal error: stdlib.h: No such file or directory Most other linux targets are able to build the --without-headers compiler without additional effort. This change adds IA64 to the fold. The change drops part of the code that relies on DYNAMIC glibc section traversal for backtraces. Tested bootstrap of ia64-unknown-linux-gnu with and without libc headers present. libgcc/ * config/ia64/fde-glibc.c: Make a no-op in inhibit_libc mode.
2022-03-30Daily bump.GCC Administrator1-0/+18
2022-03-29LoongArch Port: Regenerate libgcc/configure.chenglulu1-1/+4
2022-03-29 Chenghua Xu <xuchenghua@loongson.cn> Lulu Cheng <chenglulu@loongson.cn> libgcc/ChangeLog: * configure: Regenerate file.
2022-03-29LoongArch Port: libgccchenglulu9-2/+328
2022-03-29 Chenghua Xu <xuchenghua@loongson.cn> Lulu Cheng <chenglulu@loongson.cn> libgcc/ChangeLog: * config/loongarch/crtfastmath.c: New file. * config/loongarch/linux-unwind.h: Like wise. * config/loongarch/sfp-machine.h: Like wise. * config/loongarch/t-crtstuff: Like wise. * config/loongarch/t-loongarch: Like wise. * config/loongarch/t-loongarch64: Like wise. * config/loongarch/t-softfp-tf: Like wise. * config.host: Add LoongArch tuples. * configure.ac: Add LoongArch support.
2022-03-20Daily bump.GCC Administrator1-0/+8
2022-03-19libgcc: m68k: avoid TEXTRELs in shared library (PR 86224)Sergei Trofimovich1-5/+14
libgcc/ PR libgcc/86224 * config/m68k/lb1sf68.S (__mulsi3_internal): Internal, hidden alias for __mulsi3. (__udivsi3_internal, __divsi3_internal): Similarly. (__umodsi3, __modsi3): Use the internal function names.
2022-03-10Daily bump.GCC Administrator1-0/+8
2022-03-09GCN: Implement __atomic_compare_exchange_{1,2} in libgcc [PR102215]Tobias Burnus1-1/+28
libgcc/ChangeLog: PR target/102215 * config/gcn/atomic.c (__sync_val_compare_and_swap_##SIZE): Move a line up to non-arg-dependent value first. (__ATOMIC_COMPARE_EXCHANGE): Define + call to generate __atomic_compare_exchange_{1,2}.
2022-03-05Daily bump.GCC Administrator1-0/+5
2022-03-04Darwin, libgcc: Fix build errors on powerpc-darwin8.Iain Sandoe2-3/+3
PowerPC Darwin8 is the last version to use an unwind frame fallback routine. This had been omitted from the new shared EH library, along with one more header dependency that only fires there. Signed-off-by: Iain Sandoe <iain@sandoe.co.uk> libgcc/ChangeLog: * config/rs6000/t-darwin-ehs: Add darwin-fallback.o. * config/t-darwin-ehs: Add dependency on unwind.h.
2022-02-25Daily bump.GCC Administrator1-0/+11
2022-02-25libgcc: fix a warning calling find_fde_tailXi Ruoyao1-1/+1
The third parameter of find_fde_tail is an _Unwind_Ptr (which is an integer type instead of a pointer), but we are passing NULL to it. This causes a -Wint-conversion warning. libgcc/ * unwind-dw2-fde-dip.c (_Unwind_Find_FDE): Call find_fde_tail with 0 instead of NULL.
2022-02-24bpf: do not --enable-gcov for bpf-*-* targetsJose E. Marchesi2-17/+31
This patch changes the build machinery in order to disable the build of GCOV (both compiler and libgcc) in bpf-*-* targets. The reason for this change is that BPF is (currently) too restricted in order to support the coverage instrumentalization. Tested in bpf-unknown-none and x86_64-linux-gnu targets. 2022-02-23 Jose E. Marchesi <jose.marchesi@oracle.com> gcc/ChangeLog PR target/104656 * configure.ac: --disable-gcov if targetting bpf-*. * configure: Regenerate. libgcc/ChangeLog PR target/104656 * configure.ac: --disable-gcov if targetting bpf-*. * configure: Regenerate.
2022-01-26Daily bump.GCC Administrator1-0/+5
2022-01-25libgcc: Fix _Unwind_Find_FDE for missing unwind data with glibc 2.35Florian Weimer1-1/+1
_dl_find_object returns success even if no unwind information has been found, and dlfo_eh_frame is NULL. libgcc/ChangeLog: PR libgcc/104207 * unwind-dw2-fde-dip.c (_Unwind_Find_FDE): Add NULL check.
2022-01-18Daily bump.GCC Administrator1-0/+4
2022-01-17Manual changes for .cc renaming.Martin Liska1-1/+1
gcc/ChangeLog: * Makefile.in: Rename .c names to .cc. * config.gcc: Likewise. * configure: Regenerate. Likewise. * configure.ac: Likewise. * gengtype.cc (set_gc_used): Likewise. (source_dot_c_frul): Likewise. (source_dot_cc_frul): Likewise. (struct file_rule_st): Likewise. (close_output_files): Likewise. * config/avr/t-avr: Use CXXFLAGS_* and CXX_FOR_BUILD. gcc/ada/ChangeLog: * Makefile.rtl: Rename .c names to .cc. * gcc-interface/Make-lang.in: Likewise. * gcc-interface/Makefile.in: Likewise. libgcc/ChangeLog: * libgcov-driver.c: Rename .c names to .cc. libcpp/ChangeLog: * Makefile.in: Rename .c names to .cc.
2022-01-16Daily bump.GCC Administrator1-0/+7
2022-01-15libgcc: Fix __gthr_i486_lock_cmp_xchg clobber for WindowsJonathan Yong2-23/+2
2022-01-14 David <gccbugzilla@limegreensocks.com> libgcc/ * config/i386/gthr-win32.c (__gthr_i486_lock_cmp_xchg): Remove inlined version, Windows 95 is no longer relevant. * config/i386/gthr-win32.h (__GTHREAD_I486_INLINE_LOCK_PRIMITIVES): unset.
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