On Linux/x86_64,
3cd23c9fd60854cd9d160ce3b341a819025bfeb8 is the first bad commit
commit 3cd23c9fd60854cd9d160ce3b341a819025bfeb8
Author: Richard Biener <[email protected]>
Date: Mon Jul 27 19:24:32 2026 +0200
tree-optimization/126404 - fixup conversion detection in reductions
caused
FAIL: gcc.dg/vect/vect-pr126404.c -flto -ffat-lto-objects (internal compiler
error: in vect_build_slp_tree_2, at tree-vect-slp.cc:2928)
FAIL: gcc.dg/vect/vect-pr126404.c -flto -ffat-lto-objects (test for excess
errors)
FAIL: gcc.dg/vect/vect-pr126404.c (internal compiler error: in
vect_build_slp_tree_2, at tree-vect-slp.cc:2928)
FAIL: gcc.dg/vect/vect-pr126404.c (test for excess errors)
with GCC configured with
../../gcc/configure
--prefix=/export/users3/haochenj/src/gcc-bisect/master/master/r17-2737/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/vect-pr126404.c --target_board='unix{-m32\
-march=cascadelake}'"
$ cd {build_dir}/gcc && make check
RUNTESTFLAGS="vect.exp=gcc.dg/vect/vect-pr126404.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.)
