GCC

GCC, the GNU Compiler Collection that is the Free Software Foundation open-source compiler for C, C++, Fortran, Java, ADA, and other languages.

Update the arm-*-vxworks* support
hainque: 2019-11-13 Jerome Lambourg Doug Rupp Olivier Hainque gcc/ - config.gcc: Collapse the arm-vxworks entries into a single arm-wrs-vxworks7* one, bpabi based.

Base support for vxworks 7 on aarch64
hainque: 2019-11-14 Doug Rupp Olivier Hainque Jerome Lambourg

Update the libgcc support for VxWorks AE/653
hainque: 2019-11-12 Olivier Hainque libgcc/ - config/t-gthr-vxworksae: New file, add all the gthr-vxworks sources except the cxx0x support to LIB2ADDEH.

Improve the thread support for VxWorks
hainque: 2019-11-12 Corentin Gay Jerome Lambourg Olivier Hainque libgcc/ - config/t-gthr-vxworks: New file, add all the gthr-vxworks sources to LIB2ADDEH. - config/t-vxworks: Remove adjustments to LIB2ADDEH. - config/t-vxworks7: Likewise. - config.host: Append a block at the end of the file to add the t-gthr files to the tmake_file list for VxWorks after everything else. - config/vxlib.c: Rename as gthr-vxworks.c. - config/vxlib-tls.c: Rename as gthr-vxworks-tls.c. - config/gthr-vxworks.h: Simplify a few comments.

Introduce vxworks specific crtstuff support
hainque: 2019-11-06 Jerome Lambourg Olivier Hainque libgcc/ - config/vxcrtstuff.c: New file. - config/t-vxcrtstuff: New Makefile fragment. - config.host: Append t-vxcrtstuff to the tmake_file list on all VxWorks ports using dwarf for table based EH. gcc/ - config/vx-common.h (USE_TM_CLONE_REGISTRY): Remove definition, pointless with a VxWorks specific version of crtstuff.

Common ground work for vxworks7 ports updates
hainque: 2019-11-06 Pat Bernardi Jerome Lambourg Olivier Hainque gcc/ - config.gcc: Add comment to introduce the TARGET_VXWORKS commong macro definitions, conveying VXWORKS7 or 64bit general variations.

Vectorise conversions between differently-sized integer vectors
rsandifo: This patch adds AArch64 patterns for converting between 64-bit and 128-bit integer vectors, and makes the vectoriser and expand pass use them.

Allow mixed vector sizes within a single vectorised stmt
rsandifo: Although a previous patch allowed mixed vector sizes within a vector region, we generally still required equal vector sizes within a vector stmt.

[AArch64] Support vectorising with multiple vector sizes
rsandifo: This patch makes the vectoriser try mixtures of 64-bit and 128-bit vector modes on AArch64.

Support vectorisation with mixed vector sizes
rsandifo: After previous patches, it's now possible to make the vectoriser support multiple vector sizes in the same vector region, using related_vector_mode to pick the right vector mode for a given element mode.

Add a targetm.vectorize.related_mode hook
rsandifo: This patch is the first of a series that tries to remove two assumptions: (1) that all vectors involved in vectorisation must be the same size (2) that there is only one vector mode for a given element mode and number of elements Relaxing (1) helps with targets that support multiple vector sizes or that require the number of elements to stay the same.

aarch64: Add "c" constraint
rth: Mirror arm in letting "c" match the condition code register.

Support for value ranges in IPA predicates
hubicka: - ipa-cp.c (ipa_vr_operation_and_type_effects): Move up in file.

Support C2x [[]] attributes for C.
jsm28: This patch adds support for the C2x [[]] attribute syntax to the C front end.

Support extended aggregate jump function in ipa-cp
fxue: 2019-11-14 Feng Xue <fxue@os.amperecomputing.com> PR ipa/91682 - ipa-prop.h (jump_func_type): New value IPA_JF_LOAD_AGG.

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GCN Libgomp Plugin
ams: 2019-11-13 Andrew Stubbs Kwok Cheung Yeung Julian Brown Tom de Vries

GCN libgomp port
ams: 2019-11-13 Andrew Stubbs Kwok Cheung Yeung Julian Brown Tom de Vries include/ - gomp-constants.h (GOMP_DEVICE_GCN): Define.

Enable libsanitizer build on riscv64
schwab: - configure.

Apply mechanical replacement (generated patch).
marxin: 2019-11-12 Martin Liska - asan.c (asan_sanitize_stack_p): Replace old parameter syntax with the new one, include opts.h if needed.

Include new generated gcc/params.opt file
marxin: 2019-11-12 Martin Liska

Param to options conversion
marxin: 2019-11-12 Martin Liska - common.opt: Remove --param and --param= options. - opt-functions.awk: Mark CL_PARAMS for options that have Param keyword. - opts-common.c (decode_cmdline_options_to_array): Replace --param key=value with --param=key=value. - opts.c (print_filtered_help): Remove special printing of params.

Implement P1946R0, Allow defaulting comparisons by value
jason: - method.c (early_check_defaulted_comparison): Accept by-value, reject mixed by-value and by-reference parms.

[RS6000] PC-relative TLS support
amodra: Supporting TLS for -mpcrel turns out to be relatively simple.

[RS6000] Remove TARGET_TLS_MARKERS and require binutils 2.20
amodra: This patch removes !TARGET_TLS_MARKERS support.

Bump minimum MPFR version to 3.1.0
jb: Bump the minimum MPFR version to 3.1.0, released 2011-10-03.

[build] Properly track GCC language configure fragments
tschwinge: The 'gcc/configure' script sources all 'gcc/*/config-lang.in' files, but fails to emit such dependency information into the build machinery.

[rs6000] Make load cost a bit more in vectorization cost
linkw: To align with rs6000_insn_cost costing more for load type insns, this patch is to make load insns cost more in vectorization cost function.

Implement D1957R0, T* to bool should be considered narrowing
jason: This paper was delayed until the February meeting in Prague so that we could get a better idea of what the impact on existing code would actually be.

GCC Release Tags

libgo: update to Go 1.12.2
ian: Reviewed-on:

libgo: update to Go 1.12.1
ian: Reviewed-on:

libgo: update to Go 1.12 release
ian: Reviewed-on:

libgo: update to Go 1.11.1 release
ian: Reviewed-on:

[libgomp, nvptx] Note that cuGetErrorString is in CUDA_VERSION >= 6000
vries: Cuda driver api function cuGetErrorString is available in version 6.0 and higher. This patch:- removes a comment saying the declaration is not available in cuda.h 6.0- fixes the presence test to use CUDA_VERSION < 6000- moves the declaration to toplevel Build on x86_64 with nvptx accelerator and reg-tested libgomp. 2018-08-08 Tom de Vries - plugin/plugin-nvptx.c (cuda_error): Move declaration of cuGetErrorString ...

libgo: update to Go 1.10.3 release
ian: Reviewed-on:

libgo: update to Go 1.10.2 release
ian: Reviewed-on:

libgo: update to final Go 1.10 release
ian: Reviewed-on:

Cleanup Solaris linker version checks
ro: - acinclude.m4 (gcc_AC_INITFINI_ARRAY): Don't require gcc_SUN_LD_VERSION.

Conversion operators have a special name * cp-tree.h (CPTI_CONV_OP_MARKER, CPTI_CONV_OP_IDENTIFIER): New. (conv_op_marker, conv_op_identifier): New. (CLASSTYPE_F
nathan: Conversion operators have a special name - cp-tree.h (CPTI_CONV_OP_MARKER, CPTI_CONV_OP_IDENTIFIER): New.

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[AArch64][SVE2] Support for EOR3 and variants of BSL
rsandifo: 2019-10-17 Yuliang Wang gcc/ - config/aarch64/aarch64-sve2.md (aarch64_sve2_eor3<mode>) (aarch64_sve2_nor<mode>, aarch64_sve2_nand<mode>) (aarch64_sve2_bsl<mode>, aarch64_sve2_nbsl<mode>) (aarch64_sve2_bsl1n<mode>, aarch64_sve2_bsl2n<mode>): New combine patterns. - config/aarch64/iterators.md (BSL_DUP): New int iterator for the above.

[Fortran] OpenACC – permit common blocks in some clauses
burnus: 2019-10-25 Cesar Philippidis Tobias Burnus gcc/fortran/ - openmp.c (gfc_match_omp_map_clause): Add and pass allow_commons argument.

[AArch64] Add partial SVE vector modes
rsandifo: This patch adds extra vector modes that represent a half, quarter or eighth of what an SVE vector can hold.

[vect] Refactor versioning threshold
avieira: gcc/ChangeLog: 2019-10-17 Andre Vieira - tree-vect-loop.c (vect_transform_loop): Move code from here... - tree-vect-loop-manip.c (vect_loop_versioning): ...

[arm] Implement negscc using SBC when appropriate
rearnsha: When the carry flag is appropriately set by a comprison, negscc patterns can expand into a simple SBC of a register with itself.

[arm] early split most DImode comparison operations
rearnsha: This patch does most of the work for early splitting the DImode comparisons.

[arm] Early expansion of uaddvdi4.
rearnsha: This code borrows strongly on the uaddvti4 expansion for aarch64 since the principles are similar.

Implement P1286R2, Contra CWG1778
jason: The C++11 requirement that an explicit exception-specification on a defaulted function match the implicit one was found to be problematic for std::atomic.

[arm] Early split addvdi4
rearnsha: This patch adds early splitting for addvdi4; it's very similar to the uaddvdi4 splitter, but the details are just different enough in places, especially for the patterns that match the splitting, where we have to compare against the non-widened version to detect if overflow occurred. I've also added a testcase to the testsuite for a couple of constants that caught me out during the development of this patch.

[arm] Cleanup dead code - old support for DImode comparisons
rearnsha: Now that all the major patterns for DImode have been converted to early expansion, we can safely clean up some dead code for the old way of handling DImode. - config/arm/arm-modes.def (CC_NCV, CC_CZ): Delete CC modes. - config/arm/arm.c (arm_select_cc_mode): Remove old selection code for DImode operands.

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