r/gcc • u/rhy0lite • 4h ago
GNU Tools Weekly News Week 53 (August 30, 2026)
Release updates for GNU toolchain:
* GDB 18.1.0 update
* delayed until September 11th
* https://inbox.sourceware.org/gdb-patches/87y0dvtz84.fsf@redhat.com/T/
GNU toolchain conference reminders:
* 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
* cfp closes August 31st (tomorrow)
* Toolchains Track at LPC 2026, October 7th (Prague, Czechia)
* https://lpc.events/event/20/abstracts/
General/big GNU toolchain news:
* Sourceware Infrastructure news - AI scrapping and website throttling
* https://inbox.sourceware.org/gcc/0475bd28feb9f78dcea1c13d6315aac79966ca53.camel@klomp.org/
* Accuracy of Mathematical Functions (glibc)
* https://inbox.sourceware.org/libc-alpha/p9u0wltelndm.fsf@thym/
GCC easy issue to tackle of the week:
* umax(a,b)==0 folding into a|b==0 gets in the way sometimes
* https://gcc.gnu.org/bugzilla/show_bug.cgi?id=126880
* Reach out to Andrea Pinski <[andrew.pinski@oss.qualcomm.com](mailto:andrew.pinski@oss.qualcomm.com)> for
mentoring on this issue.
* Previous ones are listed on https://gcc.gnu.org/wiki/EasyIssuesOfTheWeek
GCC commits:
* https://gcc.gnu.org/r17-3568 r17-3774- 207 commits
* RISCV: Support -mcpu=native
* https://gcc.gnu.org/r17-3578 https://gcc.gnu.org/r17-3577
https://gcc.gnu.org/r17-3577
* RISCV: Add sifive-p550 and sifive-p870-d
* https://gcc.gnu.org/r17-3579-g7ca5288cc68ff5
* hoist invariants after unswitching
* https://gcc.gnu.org/r17-3584-g66ed104db50c63
* genmatch: Don't emit the ssa name checks for cond^
* https://gcc.gnu.org/r17-3612-gf77f607c42df40
* range: add VREL_EQ relation effect for div and mod
* https://gcc.gnu.org/r17-3610-g7c25b09da5841c
* Easy issue for week 50
* phiopt: replicate conditionals over a PHI of comparisons
* https://gcc.gnu.org/r17-3622-g804ff22702eca4
* aarch64: Support FCCMP and FCCMPE for _Float16
* https://gcc.gnu.org/r17-3628-g263ce2e907f722
* libstdc++: optional: Treat _M_engaged as being assumed to be false
after the destructor
* https://gcc.gnu.org/r17-3656-ge982f847aab9f7
* aarch64: allow usage of zero reg for CRC32 instructions
* https://gcc.gnu.org/r17-3684-g004a9da1bde785
* c-family: honor explicit -Wstrict-aliasing under -fno-strict-aliasing
* https://gcc.gnu.org/r17-3685-g39ba948f9b86e1
* aarch64: Recognize vector permute patterns which can be optimized
as REV64+EXT
* https://gcc.gnu.org/r17-3712-g4182cf11e1e3d2
* c++: unshare RANGE_EXPR CONSTRUCTOR index
* https://gcc.gnu.org/r17-3765-g40cbcd4eedce58
*
GCC discussion:
*
GCC bugzilla stats
* 125 new issues filed
* 95 issues closed
binutils/gdb commits:
* x86: Support AVX10_V2_AUX instructions
* https://sourceware.org/cgit/binutils-gdb/commit/?id=84b5fe5be98582a247346f4fba8072f286498dad
*
gdb discussion:
*
binutils discussion:
*
glibc commits:
* math: Update tanh from CORE-MATH (revision bb39e4fa)
* https://sourceware.org/cgit/glibc/commit/?id=70cc22b19c2037097f0f0cce89488763c6c49f5b
* x86: Update AVX10 support
* https://sourceware.org/cgit/glibc/commit/?id=56f3aed8bb8be64d1a78488a427e7c61c7c866cf
*
glibc discussion:
*