On Linux/x86_64,
cc33f880e553d1aa94d19a349ad755f34c33de9e is the first bad commit
commit cc33f880e553d1aa94d19a349ad755f34c33de9e
Author: Jan Hubicka <hubi...@ucw.cz>
Date: Sat Nov 16 23:45:57 2024 +0100
Avoid expicit builtion list in tree-ssa-dce
caused
FAIL: g++.dg/tree-ssa/pr109442.C -std=gnu++11 scan-tree-dump-not optimized
"_M_start"
FAIL: g++.dg/tree-ssa/pr109442.C -std=gnu++17 scan-tree-dump-not optimized
"_M_start"
FAIL: g++.dg/tree-ssa/pr109442.C -std=gnu++26 scan-tree-dump-not optimized
"_M_start"
with GCC configured with
../../gcc/configure
--prefix=/export/users/haochenj/src/gcc-bisect/master/master/r15-5359/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="dg.exp=g++.dg/tree-ssa/pr109442.C --target_board='unix{-m32}'"
$ cd {build_dir}/gcc && make check
RUNTESTFLAGS="dg.exp=g++.dg/tree-ssa/pr109442.C --target_board='unix{-m32\
-march=cascadelake}'"
$ cd {build_dir}/gcc && make check
RUNTESTFLAGS="dg.exp=g++.dg/tree-ssa/pr109442.C --target_board='unix{-m64}'"
$ cd {build_dir}/gcc && make check
RUNTESTFLAGS="dg.exp=g++.dg/tree-ssa/pr109442.C --target_board='unix{-m64\
-march=cascadelake}'"
(Please do not reply to this email, for question about this report, contact me
at haochen dot jiang at intel.com.)
(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.)
