On Linux/x86_64,
d70720c2382e687e192a9d666e80acb41bfda856 is the first bad commit
commit d70720c2382e687e192a9d666e80acb41bfda856
Author: Tamar Christina <tamar.christ...@arm.com>
Date: Thu Nov 4 17:32:09 2021 +0000
middle-end: convert negate + right shift into compare greater.
caused
FAIL: gcc.dg/signbit-2.c scan-tree-dump-not optimized "\\s+>>\\s+31"
FAIL: gcc.dg/signbit-2.c scan-tree-dump-times optimized "\\s+>\\s+{ 0, 0, 0, 0
}" 1
FAIL: gcc.dg/signbit-5.c execution test
with GCC configured with
../../gcc/configure
--prefix=/local/skpandey/gccwork/toolwork/gcc-bisect-master/master/r12-4922/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=gcc.dg/signbit-2.c
--target_board='unix{-m32\ -march=cascadelake}'"
$ cd {build_dir}/gcc && make check RUNTESTFLAGS="dg.exp=gcc.dg/signbit-2.c
--target_board='unix{-m64\ -march=cascadelake}'"
$ cd {build_dir}/gcc && make check RUNTESTFLAGS="dg.exp=gcc.dg/signbit-5.c
--target_board='unix{-m32\ -march=cascadelake}'"
$ cd {build_dir}/gcc && make check RUNTESTFLAGS="dg.exp=gcc.dg/signbit-5.c
--target_board='unix{-m64\ -march=cascadelake}'"
(Please do not reply to this email, for question about this report, contact me
at skpgkp2 at gmail dot com)
