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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.
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.
generated by cgit v1.1 at 2024-10-25 23:47:10 +0000