On Linux/x86_64,
8caf155a3d6e23e47bf55068ad23c23d4655a054 is the first bad commit
commit 8caf155a3d6e23e47bf55068ad23c23d4655a054
Author: Hongyu Wang <hongyu.w...@intel.com>
Date: Sat Nov 19 09:38:00 2022 +0800
i386: Only enable small loop unrolling in backend [PR 107692]
caused
FAIL: gcc.dg/guality/loop-1.c -O2 -DPREVENT_OPTIMIZATION line 20 i == 1
FAIL: gcc.dg/guality/loop-1.c -O2 -flto -fno-use-linker-plugin
-flto-partition=none -DPREVENT_OPTIMIZATION line 20 i == 1
FAIL: gcc.dg/guality/loop-1.c -O2 -flto -fuse-linker-plugin
-fno-fat-lto-objects -DPREVENT_OPTIMIZATION line 20 i == 1
FAIL: gcc.dg/guality/loop-1.c -O3 -g -DPREVENT_OPTIMIZATION line 20 i == 1
with GCC configured with
../../gcc/configure
--prefix=/export/users/haochenj/src/gcc-bisect/master/master/r13-4272/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="guality.exp=gcc.dg/guality/loop-1.c --target_board='unix{-m32}'"
$ cd {build_dir}/gcc && make check
RUNTESTFLAGS="guality.exp=gcc.dg/guality/loop-1.c --target_board='unix{-m32\
-march=cascadelake}'"
(Please do not reply to this email, for question about this report, contact me
at haochen dot jiang at intel.com)
