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GCC Administrator
2026-04-28 00:16:32 +00:00
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113
gcc/ChangeLog
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2026-04-27 Jeff Law <jeffrey.law@oss.qualcomm.com>
PR tree-optimization/57650
* config/riscv/zicond.md: Generalize patterns which identify
a logical AND of an equality test and some other sCC insn to
handle more cases.
2026-04-27 Soumya AR <soumyaa@nvidia.com>
* config/aarch64/aarch64-narrow-gp-writes.cc
(narrow_gp_writes::narrow_gp_writes): Remove redundant m_curr_insn
initialization.
(narrow_gp_writes::~narrow_gp_writes): Remove redundant m_curr_insn
de-initialization.
2026-04-27 Philipp Tomsich <philipp.tomsich@vrull.eu>
* ext-dce.cc (promotion_candidate_info): New struct.
(copy_info): New struct.
(promotion_candidates, promotable_dests): New file-scope variables.
(consumed_by_candidate, promotion_copies): Likewise.
(ext_dce_try_promote_operation): New function to promote
sign/zero-extended arithmetic to wider mode.
(ext_dce_record_promotion_candidate): New function to record
promotion candidates for deferred chain analysis.
(ext_dce_promote_chained_candidates): New function to promote
only chained candidates.
(ext_dce_process_uses): Record candidates instead of promoting
immediately; propagate chain info through optimized copies.
(ext_dce_process_bb): Call ext_dce_promote_chained_candidates
after processing all insns in a block.
(ext_dce_init): Allocate chain detection bitmaps.
(ext_dce_finish): Free chain detection data structures.
2026-04-27 Philipp Tomsich <philipp.tomsich@vrull.eu>
* ext-dce.cc (ext_dce_try_optimize_extension): Only remove
REG_EQUAL/EQUIV notes when validate_change succeeds.
2026-04-27 Soumya AR <soumyaa@nvidia.com>
* config/aarch64/tuning_models/generic.h: Update br_mispredict_factor
to 7.
2026-04-27 Philipp Tomsich <philipp.tomsich@vrull.eu>
* match.pd: Relax single_use for eq/ne when folded constant
is zero.
2026-04-27 Vladimir N. Makarov <vmakarov@redhat.com>
* lra-lives.cc (clear_sparseset_regnos, regnos_in_sparseset_p):
Use set instead of dead_set.
2026-04-27 Vladimir N. Makarov <vmakarov@redhat.com>
* ira-costs.cc (record_reg_classes): When calculating alt_cost use
the right cost of memory-reg move.
* ira-emit.cc (emit_move_list): Use load cost instead of store for
moving memory to reg.
2026-04-27 Vladimir N. Makarov <vmakarov@redhat.com>
* ira-build.cc (add_to_conflicts): Use sizeof(ira_object_p)
instead of sizeof(ira_allocno_t) for allocations.
* ira-color.cc (print_hard_reg_set): Fix printing hard reg set.
* ira-emit.cc (allocno_last_set, allocno_last_set_check): Remove
unused static variables.
* ira.cc (combine_and_move_insns): Fix dead note recognition.
(ira_remove_insn_scratches): Use dump_file instead of
ira_dump_file.
* lra-constraints.cc (match_reload): Remove always true condition.
(undo_optional_reloads): Fix recognition of clobber for assertion.
2026-04-27 Pengxuan Zheng <pengxuan.zheng@oss.qualcomm.com>
PR tree-optimization/124886
* match.pd ((X * C1) + (X << C2) -> X * (C1 + (1 << C2))): New pattern.
2026-04-27 Jeff Law <jeffrey.law@oss.qualcomm.com>
PR target/121268
* config/riscv/bitmanip.md: Add splitters to exploit identities
that relate subtraction and bitwise negation on 2's complement
arithmetic.
2026-04-27 Muhammad Kamran <muhammad.kamran@arm.com>
* doc/sourcebuild.texi (Scan object metadata with readelf): Document
object-readelf-attributes, object-readelf-attributes-not,
object-readelf-notes, and object-readelf-notes-not as regex-based
checks with optional target/xfail selectors.
2026-04-27 Netanel Komm <netanelkomm@gmail.com>
PR tree-optimization/93556
* gimple-fold.cc (gimple_fold_builtin_mempcpy): New function.
(gimple_fold_builtin): Handle BUILT_IN_MEMPCPY.
2026-04-27 Richard Biener <rguenther@suse.de>
PR tree-optimization/125025
* tree-ssa-loop-niter.cc (number_of_iterations_ne): Avoid
negation of most negative signed integer.
(number_of_iterations_lt): Likewise.
2026-04-27 Richard Biener <rguenther@suse.de>
PR tree-optimization/125019
* tree-vect-loop.cc (vectorizable_recurr): Properly guard
against hitting last stmt when searching for the insertion
place.
2026-04-26 Andrew Pinski <andrew.pinski@oss.qualcomm.com>
PR tree-optimization/110262

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gcc/DATESTAMP
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20260427
20260428

24
gcc/cp/ChangeLog
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2026-04-27 Patrick Palka <ppalka@redhat.com>
PR c++/124978
PR c++/115314
* semantics.cc (finish_decltype_type): Check REFERENCE_REF_P
instead of INDIRECT_REF_P before stripping implicit dereferences.
2026-04-27 Patrick Palka <ppalka@redhat.com>
PR c++/124953
* module.cc (trees_in::tree_node) <tt_nttp_var>: Push the result
of get_template_parm_object to post_load_decls.
(post_load_processing): Call cp_finish_decl on any not yet
completed NTTP objects.
* pt.cc (get_template_parm_object): Don't call cp_finish_decl
when !check_init.
2026-04-27 Jason Merrill <jason@redhat.com>
PR c++/124910
DR 2658
* constexpr.cc (reduced_constant_expression_p): Allow a union
with no active member.
2026-04-23 Patrick Palka <ppalka@redhat.com>
* module.cc (trees_out::core_vals) <case PTRMEM_CST>:

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gcc/po/ChangeLog
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2026-04-27 Joseph Myers <josmyers@redhat.com>
* sv.po: Update.
2026-04-22 Joseph Myers <josmyers@redhat.com>
* gcc.pot: Regenerate.

111
gcc/testsuite/ChangeLog
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2026-04-27 Jeff Law <jeffrey.law@oss.qualcomm.com>
PR tree-optimization/57650
* gcc.target/riscv/pr57650.c: New test.
2026-04-27 Patrick Palka <ppalka@redhat.com>
PR c++/124978
PR c++/115314
* g++.dg/cpp2a/nontype-class74.C: New test.
2026-04-27 Patrick Palka <ppalka@redhat.com>
PR c++/124953
* g++.dg/modules/tpl-nttp-3_a.H: New test.
* g++.dg/modules/tpl-nttp-3_b.C: New test.
2026-04-27 Philipp Tomsich <philipp.tomsich@vrull.eu>
* gcc.target/riscv/ext-dce-promote-2.c: Update to verify both
chain promotions (sh1add, sh3add) and standalone skipping.
* gcc.target/riscv/ext-dce-promote-1.c: New file.
2026-04-27 Philipp Tomsich <philipp.tomsich@vrull.eu>
* gcc.dg/tree-ssa/forwprop-pre-incr-cmp.c: New test.
2026-04-27 Jason Merrill <jason@redhat.com>
PR c++/124910
DR 2658
* g++.dg/cpp2a/constexpr-union12.C: New test.
2026-04-27 Pengxuan Zheng <pengxuan.zheng@oss.qualcomm.com>
PR tree-optimization/124886
* gcc.dg/tree-ssa/pr124886.c: New test.
2026-04-27 Jeff Law <jeffrey.law@oss.qualcomm.com>
PR target/121268
* gcc.target/riscv/pr121268.c: New test.
2026-04-27 Muhammad Kamran <muhammad.kamran@arm.com>
PR target/124365
* gcc.target/aarch64/lto/lto.exp: New DejaGnu test driver for LTO tests
for aarch64. Copied from gcc/testsuite/gcc.target/arm/lto/lto.exp with
minor changes.
* gcc.target/aarch64/lto/pr124365-build-attributes-1_0.c: New test
for build attributes with branch protection.
* gcc.target/aarch64/lto/pr124365-build-attributes-1_1.c: Companion
source file for the LTO test.
* gcc.target/aarch64/lto/pr124365-build-attributes-2_0.c: New test
for build attributes without branch protection.
* gcc.target/aarch64/lto/pr124365-build-attributes-2_1.c: Companion
source file for the LTO test with branch protection enabled.
* gcc.target/aarch64/lto/pr124365-gnu-property-1_0.c: New test for
`.note.gnu.property` with branch protection.
* gcc.target/aarch64/lto/pr124365-gnu-property-1_1.c: Companion
source file for the LTO test.
* gcc.target/aarch64/lto/pr124365-gnu-property-2_0.c: New test for
`.note.gnu.property` without branch protection.
* gcc.target/aarch64/lto/pr124365-gnu-property-2_1.c: Companion
source file for the LTO test with branch protection enabled.
2026-04-27 Muhammad Kamran <muhammad.kamran@arm.com>
* lib/lto.exp (object-readelf): Accept a readelf option and a single
regex; match against full readelf output. Keep positive/negative
behaviour via wrappers.
(object-readelf-attributes, object-readelf-attributes-not,
object-readelf-notes, object-readelf-notes-not): Implement as wrappers
over the generic matcher.
* gcc.dg-selftests/dg-final.exp (dg_final_directive_check_num_args):
Update for object-readelf-* wrappers to regex-style arguments (1..3).
* gcc.target/arm/lto/pr61123-enum-size_0.c: Update to use
object-readelf-attributes with a single regex.
2026-04-27 Netanel Komm <netanelkomm@gmail.com>
PR tree-optimization/93556
* gcc.dg/pr79223.c: Rename to gcc.dg/pr79223-1.c and update scans.
* gcc.dg/tree-prof/val-prof-7.c: Rename to
gcc.dg/tree-prof/val-prof-7-1.c and update scans.
* gcc.dg/tree-ssa/builtins-folding-gimple-3.c: Update scans.
* gcc.dg/builtin-mempcpy-1.c: New test.
* gcc.dg/builtin-mempcpy-2.c: New test.
* gcc.dg/pr79223-2.c: New test.
* gcc.dg/tree-prof/val-prof-7-2.c: New test.
* gcc.dg/tree-ssa/builtins-folding-gimple-4.c: New test.
* gcc.dg/pr79223-1.c: New file.
* gcc.dg/tree-prof/val-prof-7-1.c: New file.
2026-04-27 Jakub Jelinek <jakub@redhat.com>
PR tree-optimization/124988
* gcc.dg/torture/bitint-95.c: Add bitint effective targets and
guard parts of test which need _BitInt(192) support with
__BITINT_MAXWIDTH__ >= 192.
2026-04-27 Richard Biener <rguenther@suse.de>
PR tree-optimization/125025
* gcc.dg/torture/pr125025.c: New testcase.
2026-04-27 Richard Biener <rguenther@suse.de>
PR tree-optimization/125019
* gcc.dg/pr125019.c: New testcase.
2026-04-26 Andrew Pinski <andrew.pinski@oss.qualcomm.com>
PR tree-optimization/110262

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libstdc++-v3/ChangeLog
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2026-04-27 Jakub Jelinek <jakub@redhat.com>
PR libstdc++/125024
* include/std/type_traits (std::is_scalar): For
__cpp_impl_reflection >= 202506L handle is_reflection types as
scalar.
* testsuite/20_util/is_scalar/reflection.cc: New test.
2026-04-24 Tomasz Kamiński <tkaminsk@redhat.com>
* include/bits/chrono.h: Add static_assert requiring cv-unqualified