On Linux/x86_64,
8afdbcdd7abe1e3c7a81e07f34c256e7f2dbc652 is the first bad commit
commit 8afdbcdd7abe1e3c7a81e07f34c256e7f2dbc652
Author: Di Zhao <[email protected]>
Date: Fri Dec 15 03:22:32 2023 +0800
Consider fully pipelined FMA in get_reassociation_width
caused
FAIL: gcc.dg/guality/pr58791-4.c -O2 -DPREVENT_OPTIMIZATION line
pr58791-4.c:32 i2 == 487
FAIL: gcc.dg/guality/pr58791-4.c -O2 -DPREVENT_OPTIMIZATION line
pr58791-4.c:32 i == 486
FAIL: gcc.dg/guality/pr58791-4.c -O2 -flto -fno-use-linker-plugin
-flto-partition=none -DPREVENT_OPTIMIZATION line pr58791-4.c:32 i2 == 487
FAIL: gcc.dg/guality/pr58791-4.c -O2 -flto -fno-use-linker-plugin
-flto-partition=none -DPREVENT_OPTIMIZATION line pr58791-4.c:32 i == 486
FAIL: gcc.dg/guality/pr58791-4.c -O2 -flto -fuse-linker-plugin
-fno-fat-lto-objects -DPREVENT_OPTIMIZATION line pr58791-4.c:32 i2 == 487
FAIL: gcc.dg/guality/pr58791-4.c -O2 -flto -fuse-linker-plugin
-fno-fat-lto-objects -DPREVENT_OPTIMIZATION line pr58791-4.c:32 i == 486
FAIL: gcc.dg/guality/pr58791-4.c -O3 -g -DPREVENT_OPTIMIZATION line
pr58791-4.c:32 i2 == 487
FAIL: gcc.dg/guality/pr58791-4.c -O3 -g -DPREVENT_OPTIMIZATION line
pr58791-4.c:32 i == 486
FAIL: gcc.dg/guality/pr58791-4.c -Os -DPREVENT_OPTIMIZATION line
pr58791-4.c:32 i2 == 487
FAIL: gcc.dg/guality/pr58791-4.c -Os -DPREVENT_OPTIMIZATION line
pr58791-4.c:32 i == 486
with GCC configured with
../../gcc/configure
--prefix=/export/users/haochenj/src/gcc-bisect/master/master/r14-6559/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/pr58791-4.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.)
