On Linux/x86_64,
b88adba751da635c6f0c353c5bc51bbe2ecf4c89 is the first bad commit
commit b88adba751da635c6f0c353c5bc51bbe2ecf4c89
Author: Liwei Xu liwei...@intel.com<mailto:liwei...@intel.com>
Date: Fri Sep 23 13:46:02 2022 +0800
Optimize nested permutation to single VEC_PERM_EXPR [PR54346]
caused
FAIL: gcc.dg/tree-ssa/forwprop-19.c scan-tree-dump-not forwprop1 .VEC_PERM_EXPR.
with GCC configured with
../../gcc/configure
--prefix=/export/users/haochenj/src/gcc-bisect/master/master/r13-3212/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="tree-ssa.exp=gcc.dg/tree-ssa/forwprop-19.c
--target_board='unix{-m32}'"
$ cd {build_dir}/gcc && make check
RUNTESTFLAGS="tree-ssa.exp=gcc.dg/tree-ssa/forwprop-19.c
--target_board='unix{-m32\ -march=cascadelake}'"
$ cd {build_dir}/gcc && make check
RUNTESTFLAGS="tree-ssa.exp=gcc.dg/tree-ssa/forwprop-19.c
--target_board='unix{-m64}'"
$ cd {build_dir}/gcc && make check
RUNTESTFLAGS="tree-ssa.exp=gcc.dg/tree-ssa/forwprop-19.c
--target_board='unix{-m64\ -march=cascadelake}'"
