On Linux/x86_64,
ed1911b9f1f1ab0c1b631f0b6427b798c7056200 is the first bad commit
commit ed1911b9f1f1ab0c1b631f0b6427b798c7056200
Author: Kugan Vivekanandarajah <[email protected]>
Date: Sun Nov 23 15:27:10 2025 +1100
[tree-optimization] Allow LICM to hoist loads in "self write" patterns
caused
FAIL: gcc.dg/vect/bb-slp-41.c -flto -ffat-lto-objects scan-tree-dump-not slp1
"vectorizing stmts using SLP"
FAIL: gcc.dg/vect/bb-slp-41.c scan-tree-dump-not slp1 "vectorizing stmts using
SLP"
with GCC configured with
../../gcc/configure
--prefix=/export/users3/haochenj/src/gcc-bisect/master/master/r16-5526/usr
--enable-clocale=gnu --with-system-zlib --with-demangler-in-ld
--with-fpmath=sse --enable-languages=c,c++,fortran --enable-cet --without-isl
--enable-libmpx x86_64-linux --disable-bootstrap
To reproduce:
$ cd {build_dir}/gcc && make check
RUNTESTFLAGS="vect.exp=gcc.dg/vect/bb-slp-41.c --target_board='unix{-m32}'"
$ cd {build_dir}/gcc && make check
RUNTESTFLAGS="vect.exp=gcc.dg/vect/bb-slp-41.c --target_board='unix{-m32\
-march=cascadelake}'"
$ cd {build_dir}/gcc && make check
RUNTESTFLAGS="vect.exp=gcc.dg/vect/bb-slp-41.c --target_board='unix{-m64\
-march=cascadelake}'"
(Please directly reply to this email for question about this report.)
(If you met problems with cascadelake related, disabling AVX512F in command
line might save that.)
(However, please make sure that there is no potential problems with AVX512.)
