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GCC Administrator
2026-05-01 00:16:27 +00:00
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ChangeLog
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2026-04-30 Christopher Bazley <chris.bazley@arm.com>
* MAINTAINERS: Add myself to write after approval.
2026-04-28 Bohan Lei <garthlei@linux.alibaba.com>
* MAINTAINERS: Add myself to write after approval and DCO.

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contrib/ChangeLog
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2026-04-30 Jakub Jelinek <jakub@redhat.com>
* gennews (files): Add files for GCC 16.
2026-04-22 Jakub Jelinek <jakub@redhat.com>
* gcc-changelog/git_update_version.py (active_refs): Add

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gcc/ChangeLog
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2026-04-30 H.J. Lu <hjl.tools@gmail.com>
PR target/124878
* config/i386/i386.cc (x86_64_int_return_registers): Remove
DI_REG and SI_REG.
(ix86_function_value_regno_p): Remove DI_REG and SI_REG cases.
(function_value_64): Replace X86_64_REGPARM_MAX and
X86_64_SSE_REGPARM_MAX with X86_64_MAX_RETURN_NREGS and
X86_64_MAX_SSE_RETURN_NREGS for the number of registers used
in return values.
* config/i386/i386.h (X86_64_MAX_RETURN_NREGS): New. Defined
to 2.
(X86_64_MAX_SSE_RETURN_NREGS): Likewise.
2026-04-30 H.J. Lu <hjl.tools@gmail.com>
PR target/125102
* config/i386/mmx.md (V_16_32_64:*mov<mode>_imm): Disable
16-bit immediate integer store if TARGET_LCP_STALL is true.
2026-04-30 Eric Botcazou <ebotcazou@adacore.com>
* Makefile.in (COVERAGE_FLAGS): Remove obsolete comment.
2026-04-30 Vladimir N. Makarov <vmakarov@redhat.com>
* ira-costs.cc (record_reg_classes): Process correctly case
op_class == NO_REGS.
2026-04-30 Vladimir N. Makarov <vmakarov@redhat.com>
* ira-color.cc (assign_hard_reg): Use the right allocno mode to
call note_conflict.
2026-04-30 Heiko Eißfeldt <heiko.Eissfeldt@hexco.de>
PR middle-end/124805
* tree-ssa.cc (verify_vssa):
replace recursive calls with iteration for lower stack usage
2026-04-30 Tomas Härdin <git@haerdin.se>
* toplev.cc (output_stack_usage_1): Pass RINT_DECL_UNIQUE_NAME
instead of PRINT_DECL_NAME to print_decl_identifier.
2026-04-30 Andrew Pinski <andrew.pinski@oss.qualcomm.com>
* match.pd (`(a !=/== b) &\| ((a|b) ==/!= 0)`):
Simplify patterns using for loop and remove the `:c`
on the inner ne/eq.
2026-04-30 Christopher Bazley <chris.bazley@arm.com>
* config/aarch64/aarch64-c.cc (aarch64_pragma_target_parse):
Pass &global_options_set as an argument to
aarch64_override_options_internal.
* config/aarch64/aarch64-protos.h (aarch64_override_options_internal):
Add a parameter declaration for opts_set.
* config/aarch64/aarch64.cc (aarch64_override_options_internal):
Add a parameter declaration for opts_set and use the argument
when invoking SET_OPTION_IF_UNSET.
(aarch64_override_options): Pass &global_options_set as an argument to
aarch64_override_options_internal.
(aarch64_option_restore): As above.
(aarch64_set_current_function): As above.
(aarch64_option_valid_attribute_p): As above.
(aarch64_option_valid_version_attribute_p): As above.
2026-04-30 Richard Biener <rguenther@suse.de>
PR tree-optimization/125088
* tree-vect-slp.cc (vect_bb_slp_scalar_cost): Refactor and
simplify.
* tree-vect-stmts.cc (vect_nop_conversion_p): Exclude
copies with memory accesses.
2026-04-30 H.J. Lu <hjl.tools@gmail.com>
PR target/125026
PR target/125032
* config/i386/i386-features.cc (ix86_place_single_vector_set):
Don't check CONST_VECTOR load size.
(replace_vector_const): Handle constant integer load.
(x86_cse::x86_cse): Convert CONST_VECTOR load no larger than
integer to constant integer load and keep redundant constant
integer load. Generate zero CONST_VECTOR load.
2026-04-30 Michiel Derhaeg <Michiel.Derhaeg@synopsys.com>
* doc/params.texi: Added --param=max-niter-dominators-walk.
* params.opt: Added --param=max-niter-dominators-walk.
* tree-ssa-loop-niter.cc (MAX_DOMINATORS_TO_WALK): Removed.
(determine_value_range): Updated.
(bound_difference): Updated.
(simplify_using_initial_conditions): Updated.
2026-04-30 Richard Biener <rguenther@suse.de>
PR tree-optimization/120398
PR tree-optimization/123603
* config/i386/i386.opt (ix86-vect-compare-costs): Default to 1.
2026-04-30 Richard Biener <rguenther@suse.de>
* config/i386/i386.cc (ix86_vector_costs::better_epilogue_loop_than_p):
New. If the other loop suggests this as epilog prefer other.
2026-04-30 Richard Biener <rguenther@suse.de>
* tree-vectorizer.h (vector_costs::vinfo): New accessor.
* config/i386/i386.cc (ix86_vector_costs::better_main_loop_than_p):
Prefer a masked main loop if we can elide enough of (vector)
epilog loop iterations.
2026-04-29 Pengxuan Zheng <pengxuan.zheng@oss.qualcomm.com>
PR tree-optimization/113379

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gcc/DATESTAMP
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20260430
20260501

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gcc/ada/ChangeLog
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2026-04-30 Eric Botcazou <ebotcazou@adacore.com>
PR ada/110336
* gcc-interface/Makefile.in (COVERAGE_FLAGS): New variable
(GCC_LINK_FLAGS): Add $(COVERAGE_FLAGS).
(ALL_CFLAGS): Likewise.
(enable_host_pie): Fold into single use.
2026-04-30 Eric Botcazou <ebotcazou@adacore.com>
PR ada/125044
* sem_disp.adb (Check_Controlling_Formals): Apply the same massaging
to the result subtype as to the parameter subtypes.
2026-04-22 Eric Botcazou <ebotcazou@adacore.com>
PR ada/85766

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gcc/testsuite/ChangeLog
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2026-04-30 Eric Botcazou <ebotcazou@adacore.com>
* gnat.dg/task6.ads, gnat.dg/task6.adb: New test.
2026-04-30 H.J. Lu <hjl.tools@gmail.com>
PR target/125026
PR target/125032
* gcc.target/i386/pr125026.c: New test.
* gcc.target/i386/pr125032-1.c: Likewise.
* gcc.target/i386/pr125032-2.c: Likewise.
2026-04-30 Richard Biener <rguenther@suse.de>
PR tree-optimization/120398
PR tree-optimization/123603
* gcc.dg/vect/costmodel/x86_64/costmodel-pr120398.c: New testcase.
* gcc.dg/vect/costmodel/x86_64/costmodel-pr123603.c: Adjust.
* gcc.target/i386/vect-alignment-peeling-1.c: Likewise.
* gcc.target/i386/vect-alignment-peeling-2.c: Likewise.
* gcc.target/i386/vect-epilogues-10.c: Add -fno-vect-cost-model.
2026-04-30 Richard Biener <rguenther@suse.de>
* gcc.target/i386/shift-gf2p8affine-1.c: Disable epilogue
vectorization.
* gcc.target/i386/shift-gf2p8affine-3.c: Likewise.
* gcc.target/i386/shift-gf2p8affine-7.c: Likewise.
2026-04-30 Richard Biener <rguenther@suse.de>
* gcc.target/i386/vect-epilogues-2.c: Add
--param ix86-vect-compare-costs=0.
* gcc.target/i386/vect-epilogues-2b.c: Duplicate from
gcc.target/i386/vect-epilogues-2.c, add
--param ix86-vect-compare-costs=1 and adjust expected
vectorization.
* gcc.target/i386/vect-pr113078.c: Likewise.
* gcc.target/i386/vect-pr113078b.c: Likewise.
2026-04-30 Richard Biener <rguenther@suse.de>
* gcc.target/i386/vect-strided-1.c: Disable vector cost
comparison.
* gcc.target/i386/vect-strided-2.c: Likewise.
* gcc.target/i386/vect-strided-3.c: Likewise.
* gcc.target/i386/vect-strided-4.c: Likewise.
* gcc.target/i386/vect-strided-1b.c: Copy of
gcc.target/i386/vect-strided-1.c, enable vector cost comparison
and adjust expected code generation.
* gcc.target/i386/vect-strided-2b.c: Likewise.
* gcc.target/i386/vect-strided-3b.c: Likewise.
* gcc.target/i386/vect-strided-4b.c: Likewise.
2026-04-29 Pengxuan Zheng <pengxuan.zheng@oss.qualcomm.com>
PR tree-optimization/113379

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libstdc++-v3/ChangeLog
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2026-04-30 Felix Morgner <felix.morgner@gmail.com>
PR libstdc++/125112
* include/Makefile.am: Move bits/binders.h from bits_headers to
bits_freestanding.
* include/Makefile.in:
2026-04-30 Tomasz Kamiński <tkaminsk@redhat.com>
* testsuite/26_numerics/random/uniform_real_distribution/operators/gencanon.cc:
Updated tests.
2026-04-29 Tomasz Kamiński <tkaminsk@redhat.com>
* testsuite/29_atomics/headers/stdatomic.h/macros.cc: