On Linux/x86_64, 4653b682ef161c3c2fc7bf8462b8f9206a1349e6 is the first bad commit commit 4653b682ef161c3c2fc7bf8462b8f9206a1349e6 Author: Richard Biener <rguent...@suse.de> 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.)