On Linux/x86_64,
4653b682ef161c3c2fc7bf8462b8f9206a1349e6 is the first bad commit
commit 4653b682ef161c3c2fc7bf8462b8f9206a1349e6
Author: Richard Biener <[email protected]>
Date: Tue Mar 5 15:46:24 2024 +0100
Allow single-lane SLP in-order reductions
caused
FAIL: gcc.dg/vect/vect-cond-reduc-in-order-2-signed-zero.c execution test
FAIL: gcc.dg/vect/vect-cond-reduc-in-order-2-signed-zero.c -flto
-ffat-lto-objects execution test
with GCC configured with
../../gcc/configure
--prefix=/export/users/haochenj/src/gcc-bisect/master/master/r15-1056/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="vect.exp=gcc.dg/vect/vect-cond-reduc-in-order-2-signed-zero.c
--target_board='unix{-m32\ -march=cascadelake}'"
$ cd {build_dir}/gcc && make check
RUNTESTFLAGS="vect.exp=gcc.dg/vect/vect-cond-reduc-in-order-2-signed-zero.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.)
