GNU Tools Weekly News Week 35 (April 26, 2026)

[GNU Tools weekly]

GNU Tools Weekly News Week 35 (April 26, 2026)

Note this is earlier this week due to family events on Sunday for me

Release updates for GNU toolchain:
 * GCC 16
  * Branched off
   * https://inbox.sourceware.org/gcc/e5202c2a-39b5-40be-dcb7-b632c982e39e@e124511.cambridge.arm.com/T/#me8932cf9b97bbcc68b48b18b300025d57d825ad1
  * RC 1 and RC2 were released last week
   * https://inbox.sourceware.org/gcc/aetiNPseqMyJtQMK@tucnak/T/
  * final release is due to Thursday 30th if all goes well
 * GCC 17 is trunk now
  * status: https://inbox.sourceware.org/gcc/CALvbMcBQufUKJG5s+R1oGUJdh+YB8gVtWU_RHFLumOoEV5bkJA@mail.gmail.com/T/
 * GDB 17.2.0 release update
  * https://inbox.sourceware.org/gdb-patches/ae0RrhlVXxhOv7fx@adacore.com/T/
 * valgrind 3.27.0 was released on 20 Apr 2026
  * https://valgrind.org/docs/manual/dist.news.html
  * https://gnu.wildebeest.org/blog/mjw/2026/04/20/anticipating-valgrind-3-27-0/
 * Qemu 11.0.0 was released on 21 Apr 2026
  * https://gitlab.com/qemu-project/qemu/-/commits/v11.0.0?ref_type=tags

GNU toolchain conference news:
 * FOSSY 2026 toolchain track North America, Aug 6-9 (Vancouver, Canada)
   * Call for Proposals: https://2026.fossy.ca/call-for-proposals/
 * GNU Tools Cauldron 2026, Fri-Sun, October 2-4 (Prague, Czechia)
  * https://gcc.gnu.org/wiki/cauldron2026
  * https://conf.gnu-tools-cauldron.org/prg26/cfp


General/big GNU toolchain news (including sourceware news):
 * GCC Development AI Policy Working Group formed
  * Led by Jonathan Wakely
  * https://inbox.sourceware.org/gcc/CAGWvnymkWtb2Koy=kbBFm5pUwOD05_oaB8_ayBVSi=PmAOt5xA@mail.gmail.com/T
  * https://gcc.gnu.org/wiki/working-group-ai-policy
  * See also discussion about AI/LLMs:
   * https://inbox.sourceware.org/gcc/b02e6ede-d7eb-4818-b470-a01135f2fbff@tugraz.at/T/
 *

GCC easy issue to tackle of the week:
 *
 * Note this is different from previous weeks; this is cleanup of GCC
sources rather than missed optimization
 * Reach out to Andrea Pinski <andrew.pinski@oss.qualcomm.com> for
mentoring on this issue.

GCC commits:
 * GCC 17 is now the trunk
 * d: Implement attribute no_split_stack
  * https://gcc.gnu.org/r16-8751-ge6ea8245cde290
 * cfghooks: Pass data to callback function of make_forwarder_block
  * https://gcc.gnu.org/r17-23-gcb70dab0e4bfa9
 * c++: Add support for [[gnu::trivial_abi]] attribute
  * https://gcc.gnu.org/r17-43-g1e89650aff94c2
 * c++: CWG 2229, cv-qualified unnamed bit-fields [PR123935]
   * https://gcc.gnu.org/r17-47-ge38ac19123b35c
 * match: x != -CST ? x + CST : 0 -> x + CST [PR122996]
  * Easy issue of the week (March 8, 2026)
  * https://gcc.gnu.org/r17-55-g2b0b9d3c696e50
 * dce: eliminate dead relaxed atomic loads with no LHS [PR123966]
  * https://gcc.gnu.org/r17-75-gf1b16d7a17bf2c
 * strlen: Use gimple_build/gimple_convert_to_ptrofftype [PR122989]
  * Easy issue of the week (April 19, 2026)
  * https://gcc.gnu.org/r17-82-g2985e0bd9b2aee
 * match: remove bit set/bit clear branch mispredict [PR64567]
  * https://gcc.gnu.org/r17-83-gb4162b53545220
 * scev/niter: Use INTEGRAL_NB_TYPE_P instead of direct comparison to
INTEGER_TYPE
  * https://gcc.gnu.org/r17-89-g78280307c78ead

GCC discussion:
 * GSoC 2026 project discussions from participates
 * RFC: Standalone AutoFDO Profile Tool for GCC
  * https://inbox.sourceware.org/gcc/CALvbMcDw_ZuVew5yPnrZFOhEy43WVCDundgaYDqGMbcmLgnMGA@mail.gmail.com/T/
 * RFC: AutoFDO GCOV Profile Format Version 4
  * https://inbox.sourceware.org/gcc/CALvbMcAaE7ChqEg7wHa05mGCaxWOH+uaS6xmsqP+u0sGOJ0+Fw@mail.gmail.com/T/
 * Forge update and Archival of forge discussions
  * https://inbox.sourceware.org/gcc/191fadd9-52c8-41d3-91b0-a90cece39938@arm.com/T/#u
  * https://inbox.sourceware.org/gcc/c3f1c579-5408-4936-ba45-cacd1d9bb31b@arm.com/T/#u

GCC bugzilla stats
 * new issues filed
 * issues closed

 glibc commits:
 * AArch64: Improve AdvSIMD and SVE pow(f)
  * https://sourceware.org/cgit/glibc/commit/?id=3f97be129d805f8616842802e102b77ac2cd7558
 * AArch64: Implement AdvSIMD and SVE powr(f) routines
  * https://sourceware.org/cgit/glibc/commit/?id=2ff2565df78160b392b120793d6d1aac2d716701
  *
glibc discussion:
 * glibc AI policy (continued)
 *

binutils/gdb commits:
 * Many improvements to Windows gdb (and gdbserver) support
  * changes needed before supporting non-stop debugging on Windows
 * ld: Maintain the input file order
  * https://sourceware.org/cgit/binutils-gdb/commit/?id=da208daeb710b26608a0b981df215e9da209af80
  * Fixes some GCC LTO issues with static linking
  * https://gcc.gnu.org/bugzilla/show_bug.cgi?id=124869
 *

gdb discussion:
 *
binutils discussion:
 *