On Fri, Oct 8, 2021 at 8:02 PM sunil.k.pandey via Gcc-patches
<gcc-patches@gcc.gnu.org> wrote:
>
> On Linux/x86_64,
>
> 2b8453c401b699ed93c085d0413ab4b5030bcdb8 is the first bad commit
> commit 2b8453c401b699ed93c085d0413ab4b5030bcdb8
> Author: liuhongt <hongtao....@intel.com>
> Date: Mon Sep 6 13:48:49 2021 +0800
>
> Enable auto-vectorization at O2 with very-cheap cost model.
>
> caused
>
> FAIL: libgomp.c++/scan-10.C scan-tree-dump-times vect "vectorized [2-6]
> loops" 2
> FAIL: libgomp.c/scan-11.c scan-tree-dump-times vect "vectorized [2-6] loops" 2
> FAIL: libgomp.c++/scan-11.C scan-tree-dump-times vect "vectorized [2-6]
> loops" 2
> FAIL: libgomp.c/scan-12.c scan-tree-dump-times vect "vectorized [2-6] loops" 2
> FAIL: libgomp.c++/scan-12.C scan-tree-dump-times vect "vectorized [2-6]
> loops" 2
> FAIL: libgomp.c/scan-13.c scan-tree-dump-times vect "vectorized [2-6] loops" 2
> FAIL: libgomp.c++/scan-13.C scan-tree-dump-times vect "vectorized [2-6]
> loops" 2
> FAIL: libgomp.c/scan-14.c scan-tree-dump-times vect "vectorized [2-6] loops" 2
> FAIL: libgomp.c++/scan-14.C scan-tree-dump-times vect "vectorized [2-6]
> loops" 2
> FAIL: libgomp.c/scan-15.c scan-tree-dump-times vect "vectorized [2-6] loops" 2
> FAIL: libgomp.c++/scan-15.C scan-tree-dump-times vect "vectorized [2-6]
> loops" 2
> FAIL: libgomp.c/scan-16.c scan-tree-dump-times vect "vectorized [2-6] loops" 2
> FAIL: libgomp.c++/scan-16.C scan-tree-dump-times vect "vectorized [2-6]
> loops" 2
> FAIL: libgomp.c/scan-17.c scan-tree-dump-times vect "vectorized [2-6] loops" 2
> FAIL: libgomp.c/scan-18.c scan-tree-dump-times vect "vectorized [2-6] loops" 2
> FAIL: libgomp.c/scan-19.c scan-tree-dump-times vect "vectorized [2-6] loops" 2
> FAIL: libgomp.c/scan-20.c scan-tree-dump-times vect "vectorized [2-6] loops" 2
> FAIL: libgomp.c/scan-21.c scan-tree-dump-times vect "vectorized [2-6] loops" 2
> FAIL: libgomp.c/scan-22.c scan-tree-dump-times vect "vectorized [2-6] loops" 2
> FAIL: libgomp.c++/scan-9.C scan-tree-dump-times vect "vectorized [2-6] loops"
> 2
>
> with GCC configured with
>
> ../../gcc/configure
> --prefix=/local/skpandey/gccwork/toolwork/gcc-bisect-master/master/r12-4240/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}/x86_64-linux/libgomp/testsuite && make check
> RUNTESTFLAGS="c++.exp=libgomp.c-c++-common/lastprivate-conditional-7.c
> --target_board='unix{-m32}'"
> $ cd {build_dir}/x86_64-linux/libgomp/testsuite && make check
> RUNTESTFLAGS="c++.exp=libgomp.c-c++-common/lastprivate-conditional-7.c
> --target_board='unix{-m32\ -march=cascadelake}'"
> $ cd {build_dir}/x86_64-linux/libgomp/testsuite && make check
> RUNTESTFLAGS="c++.exp=libgomp.c-c++-common/lastprivate-conditional-7.c
> --target_board='unix{-m64}'"
> $ cd {build_dir}/x86_64-linux/libgomp/testsuite && make check
> RUNTESTFLAGS="c++.exp=libgomp.c-c++-common/lastprivate-conditional-7.c
> --target_board='unix{-m64\ -march=cascadelake}'"
> $ cd {build_dir}/x86_64-linux/libgomp/testsuite && make check
> RUNTESTFLAGS="c++.exp=libgomp.c-c++-common/lastprivate-conditional-8.c
> --target_board='unix{-m32}'"
> $ cd {build_dir}/x86_64-linux/libgomp/testsuite && make check
> RUNTESTFLAGS="c++.exp=libgomp.c-c++-common/lastprivate-conditional-8.c
> --target_board='unix{-m32\ -march=cascadelake}'"
> $ cd {build_dir}/x86_64-linux/libgomp/testsuite && make check
> RUNTESTFLAGS="c++.exp=libgomp.c-c++-common/lastprivate-conditional-8.c
> --target_board='unix{-m64}'"
> $ cd {build_dir}/x86_64-linux/libgomp/testsuite && make check
> RUNTESTFLAGS="c++.exp=libgomp.c-c++-common/lastprivate-conditional-8.c
> --target_board='unix{-m64\ -march=cascadelake}'"
> $ cd {build_dir}/x86_64-linux/libgomp/testsuite && make check
> RUNTESTFLAGS="c++.exp=libgomp.c++/scan-10.C --target_board='unix{-m32}'"
> $ cd {build_dir}/x86_64-linux/libgomp/testsuite && make check
> RUNTESTFLAGS="c++.exp=libgomp.c++/scan-10.C --target_board='unix{-m32\
> -march=cascadelake}'"
> $ cd {build_dir}/x86_64-linux/libgomp/testsuite && make check
> RUNTESTFLAGS="c++.exp=libgomp.c++/scan-10.C --target_board='unix{-m64}'"
> $ cd {build_dir}/x86_64-linux/libgomp/testsuite && make check
> RUNTESTFLAGS="c++.exp=libgomp.c++/scan-10.C --target_board='unix{-m64\
> -march=cascadelake}'"
> $ cd {build_dir}/x86_64-linux/libgomp/testsuite && make check
> RUNTESTFLAGS="c.exp=libgomp.c/scan-11.c --target_board='unix{-m32}'"
> $ cd {build_dir}/x86_64-linux/libgomp/testsuite && make check
> RUNTESTFLAGS="c.exp=libgomp.c/scan-11.c --target_board='unix{-m32\
> -march=cascadelake}'"
> $ cd {build_dir}/x86_64-linux/libgomp/testsuite && make check
> RUNTESTFLAGS="c.exp=libgomp.c/scan-11.c --target_board='unix{-m64}'"
> $ cd {build_dir}/x86_64-linux/libgomp/testsuite && make check
> RUNTESTFLAGS="c.exp=libgomp.c/scan-11.c --target_board='unix{-m64\
> -march=cascadelake}'"
> $ cd {build_dir}/x86_64-linux/libgomp/testsuite && make check
> RUNTESTFLAGS="c++.exp=libgomp.c++/scan-11.C --target_board='unix{-m32}'"
> $ cd {build_dir}/x86_64-linux/libgomp/testsuite && make check
> RUNTESTFLAGS="c++.exp=libgomp.c++/scan-11.C --target_board='unix{-m32\
> -march=cascadelake}'"
> $ cd {build_dir}/x86_64-linux/libgomp/testsuite && make check
> RUNTESTFLAGS="c++.exp=libgomp.c++/scan-11.C --target_board='unix{-m64}'"
> $ cd {build_dir}/x86_64-linux/libgomp/testsuite && make check
> RUNTESTFLAGS="c++.exp=libgomp.c++/scan-11.C --target_board='unix{-m64\
> -march=cascadelake}'"
> $ cd {build_dir}/x86_64-linux/libgomp/testsuite && make check
> RUNTESTFLAGS="c.exp=libgomp.c/scan-12.c --target_board='unix{-m32}'"
> $ cd {build_dir}/x86_64-linux/libgomp/testsuite && make check
> RUNTESTFLAGS="c.exp=libgomp.c/scan-12.c --target_board='unix{-m32\
> -march=cascadelake}'"
> $ cd {build_dir}/x86_64-linux/libgomp/testsuite && make check
> RUNTESTFLAGS="c.exp=libgomp.c/scan-12.c --target_board='unix{-m64}'"
> $ cd {build_dir}/x86_64-linux/libgomp/testsuite && make check
> RUNTESTFLAGS="c.exp=libgomp.c/scan-12.c --target_board='unix{-m64\
> -march=cascadelake}'"
> $ cd {build_dir}/x86_64-linux/libgomp/testsuite && make check
> RUNTESTFLAGS="c++.exp=libgomp.c++/scan-12.C --target_board='unix{-m32}'"
> $ cd {build_dir}/x86_64-linux/libgomp/testsuite && make check
> RUNTESTFLAGS="c++.exp=libgomp.c++/scan-12.C --target_board='unix{-m32\
> -march=cascadelake}'"
> $ cd {build_dir}/x86_64-linux/libgomp/testsuite && make check
> RUNTESTFLAGS="c++.exp=libgomp.c++/scan-12.C --target_board='unix{-m64}'"
> $ cd {build_dir}/x86_64-linux/libgomp/testsuite && make check
> RUNTESTFLAGS="c++.exp=libgomp.c++/scan-12.C --target_board='unix{-m64\
> -march=cascadelake}'"
> $ cd {build_dir}/x86_64-linux/libgomp/testsuite && make check
> RUNTESTFLAGS="c.exp=libgomp.c/scan-13.c --target_board='unix{-m32}'"
> $ cd {build_dir}/x86_64-linux/libgomp/testsuite && make check
> RUNTESTFLAGS="c.exp=libgomp.c/scan-13.c --target_board='unix{-m32\
> -march=cascadelake}'"
> $ cd {build_dir}/x86_64-linux/libgomp/testsuite && make check
> RUNTESTFLAGS="c.exp=libgomp.c/scan-13.c --target_board='unix{-m64}'"
> $ cd {build_dir}/x86_64-linux/libgomp/testsuite && make check
> RUNTESTFLAGS="c.exp=libgomp.c/scan-13.c --target_board='unix{-m64\
> -march=cascadelake}'"
> $ cd {build_dir}/x86_64-linux/libgomp/testsuite && make check
> RUNTESTFLAGS="c++.exp=libgomp.c++/scan-13.C --target_board='unix{-m32}'"
> $ cd {build_dir}/x86_64-linux/libgomp/testsuite && make check
> RUNTESTFLAGS="c++.exp=libgomp.c++/scan-13.C --target_board='unix{-m32\
> -march=cascadelake}'"
> $ cd {build_dir}/x86_64-linux/libgomp/testsuite && make check
> RUNTESTFLAGS="c++.exp=libgomp.c++/scan-13.C --target_board='unix{-m64}'"
> $ cd {build_dir}/x86_64-linux/libgomp/testsuite && make check
> RUNTESTFLAGS="c++.exp=libgomp.c++/scan-13.C --target_board='unix{-m64\
> -march=cascadelake}'"
> $ cd {build_dir}/x86_64-linux/libgomp/testsuite && make check
> RUNTESTFLAGS="c.exp=libgomp.c/scan-14.c --target_board='unix{-m32}'"
> $ cd {build_dir}/x86_64-linux/libgomp/testsuite && make check
> RUNTESTFLAGS="c.exp=libgomp.c/scan-14.c --target_board='unix{-m32\
> -march=cascadelake}'"
> $ cd {build_dir}/x86_64-linux/libgomp/testsuite && make check
> RUNTESTFLAGS="c.exp=libgomp.c/scan-14.c --target_board='unix{-m64}'"
> $ cd {build_dir}/x86_64-linux/libgomp/testsuite && make check
> RUNTESTFLAGS="c.exp=libgomp.c/scan-14.c --target_board='unix{-m64\
> -march=cascadelake}'"
> $ cd {build_dir}/x86_64-linux/libgomp/testsuite && make check
> RUNTESTFLAGS="c++.exp=libgomp.c++/scan-14.C --target_board='unix{-m32}'"
> $ cd {build_dir}/x86_64-linux/libgomp/testsuite && make check
> RUNTESTFLAGS="c++.exp=libgomp.c++/scan-14.C --target_board='unix{-m32\
> -march=cascadelake}'"
> $ cd {build_dir}/x86_64-linux/libgomp/testsuite && make check
> RUNTESTFLAGS="c++.exp=libgomp.c++/scan-14.C --target_board='unix{-m64}'"
> $ cd {build_dir}/x86_64-linux/libgomp/testsuite && make check
> RUNTESTFLAGS="c++.exp=libgomp.c++/scan-14.C --target_board='unix{-m64\
> -march=cascadelake}'"
> $ cd {build_dir}/x86_64-linux/libgomp/testsuite && make check
> RUNTESTFLAGS="c.exp=libgomp.c/scan-15.c --target_board='unix{-m32}'"
> $ cd {build_dir}/x86_64-linux/libgomp/testsuite && make check
> RUNTESTFLAGS="c.exp=libgomp.c/scan-15.c --target_board='unix{-m32\
> -march=cascadelake}'"
> $ cd {build_dir}/x86_64-linux/libgomp/testsuite && make check
> RUNTESTFLAGS="c.exp=libgomp.c/scan-15.c --target_board='unix{-m64}'"
> $ cd {build_dir}/x86_64-linux/libgomp/testsuite && make check
> RUNTESTFLAGS="c.exp=libgomp.c/scan-15.c --target_board='unix{-m64\
> -march=cascadelake}'"
> $ cd {build_dir}/x86_64-linux/libgomp/testsuite && make check
> RUNTESTFLAGS="c++.exp=libgomp.c++/scan-15.C --target_board='unix{-m32}'"
> $ cd {build_dir}/x86_64-linux/libgomp/testsuite && make check
> RUNTESTFLAGS="c++.exp=libgomp.c++/scan-15.C --target_board='unix{-m32\
> -march=cascadelake}'"
> $ cd {build_dir}/x86_64-linux/libgomp/testsuite && make check
> RUNTESTFLAGS="c++.exp=libgomp.c++/scan-15.C --target_board='unix{-m64}'"
> $ cd {build_dir}/x86_64-linux/libgomp/testsuite && make check
> RUNTESTFLAGS="c++.exp=libgomp.c++/scan-15.C --target_board='unix{-m64\
> -march=cascadelake}'"
> $ cd {build_dir}/x86_64-linux/libgomp/testsuite && make check
> RUNTESTFLAGS="c.exp=libgomp.c/scan-16.c --target_board='unix{-m32}'"
> $ cd {build_dir}/x86_64-linux/libgomp/testsuite && make check
> RUNTESTFLAGS="c.exp=libgomp.c/scan-16.c --target_board='unix{-m32\
> -march=cascadelake}'"
> $ cd {build_dir}/x86_64-linux/libgomp/testsuite && make check
> RUNTESTFLAGS="c.exp=libgomp.c/scan-16.c --target_board='unix{-m64}'"
> $ cd {build_dir}/x86_64-linux/libgomp/testsuite && make check
> RUNTESTFLAGS="c.exp=libgomp.c/scan-16.c --target_board='unix{-m64\
> -march=cascadelake}'"
> $ cd {build_dir}/x86_64-linux/libgomp/testsuite && make check
> RUNTESTFLAGS="c++.exp=libgomp.c++/scan-16.C --target_board='unix{-m32}'"
> $ cd {build_dir}/x86_64-linux/libgomp/testsuite && make check
> RUNTESTFLAGS="c++.exp=libgomp.c++/scan-16.C --target_board='unix{-m32\
> -march=cascadelake}'"
> $ cd {build_dir}/x86_64-linux/libgomp/testsuite && make check
> RUNTESTFLAGS="c++.exp=libgomp.c++/scan-16.C --target_board='unix{-m64}'"
> $ cd {build_dir}/x86_64-linux/libgomp/testsuite && make check
> RUNTESTFLAGS="c++.exp=libgomp.c++/scan-16.C --target_board='unix{-m64\
> -march=cascadelake}'"
> $ cd {build_dir}/x86_64-linux/libgomp/testsuite && make check
> RUNTESTFLAGS="c.exp=libgomp.c/scan-17.c --target_board='unix{-m32}'"
> $ cd {build_dir}/x86_64-linux/libgomp/testsuite && make check
> RUNTESTFLAGS="c.exp=libgomp.c/scan-17.c --target_board='unix{-m32\
> -march=cascadelake}'"
> $ cd {build_dir}/x86_64-linux/libgomp/testsuite && make check
> RUNTESTFLAGS="c.exp=libgomp.c/scan-17.c --target_board='unix{-m64}'"
> $ cd {build_dir}/x86_64-linux/libgomp/testsuite && make check
> RUNTESTFLAGS="c.exp=libgomp.c/scan-17.c --target_board='unix{-m64\
> -march=cascadelake}'"
> $ cd {build_dir}/x86_64-linux/libgomp/testsuite && make check
> RUNTESTFLAGS="c.exp=libgomp.c/scan-18.c --target_board='unix{-m32}'"
> $ cd {build_dir}/x86_64-linux/libgomp/testsuite && make check
> RUNTESTFLAGS="c.exp=libgomp.c/scan-18.c --target_board='unix{-m32\
> -march=cascadelake}'"
> $ cd {build_dir}/x86_64-linux/libgomp/testsuite && make check
> RUNTESTFLAGS="c.exp=libgomp.c/scan-18.c --target_board='unix{-m64}'"
> $ cd {build_dir}/x86_64-linux/libgomp/testsuite && make check
> RUNTESTFLAGS="c.exp=libgomp.c/scan-18.c --target_board='unix{-m64\
> -march=cascadelake}'"
> $ cd {build_dir}/x86_64-linux/libgomp/testsuite && make check
> RUNTESTFLAGS="c.exp=libgomp.c/scan-19.c --target_board='unix{-m32}'"
> $ cd {build_dir}/x86_64-linux/libgomp/testsuite && make check
> RUNTESTFLAGS="c.exp=libgomp.c/scan-19.c --target_board='unix{-m32\
> -march=cascadelake}'"
> $ cd {build_dir}/x86_64-linux/libgomp/testsuite && make check
> RUNTESTFLAGS="c.exp=libgomp.c/scan-19.c --target_board='unix{-m64}'"
> $ cd {build_dir}/x86_64-linux/libgomp/testsuite && make check
> RUNTESTFLAGS="c.exp=libgomp.c/scan-19.c --target_board='unix{-m64\
> -march=cascadelake}'"
> $ cd {build_dir}/x86_64-linux/libgomp/testsuite && make check
> RUNTESTFLAGS="c.exp=libgomp.c/scan-20.c --target_board='unix{-m32}'"
> $ cd {build_dir}/x86_64-linux/libgomp/testsuite && make check
> RUNTESTFLAGS="c.exp=libgomp.c/scan-20.c --target_board='unix{-m32\
> -march=cascadelake}'"
> $ cd {build_dir}/x86_64-linux/libgomp/testsuite && make check
> RUNTESTFLAGS="c.exp=libgomp.c/scan-20.c --target_board='unix{-m64}'"
> $ cd {build_dir}/x86_64-linux/libgomp/testsuite && make check
> RUNTESTFLAGS="c.exp=libgomp.c/scan-20.c --target_board='unix{-m64\
> -march=cascadelake}'"
> $ cd {build_dir}/x86_64-linux/libgomp/testsuite && make check
> RUNTESTFLAGS="c.exp=libgomp.c/scan-21.c --target_board='unix{-m32}'"
> $ cd {build_dir}/x86_64-linux/libgomp/testsuite && make check
> RUNTESTFLAGS="c.exp=libgomp.c/scan-21.c --target_board='unix{-m32\
> -march=cascadelake}'"
> $ cd {build_dir}/x86_64-linux/libgomp/testsuite && make check
> RUNTESTFLAGS="c.exp=libgomp.c/scan-21.c --target_board='unix{-m64}'"
> $ cd {build_dir}/x86_64-linux/libgomp/testsuite && make check
> RUNTESTFLAGS="c.exp=libgomp.c/scan-21.c --target_board='unix{-m64\
> -march=cascadelake}'"
> $ cd {build_dir}/x86_64-linux/libgomp/testsuite && make check
> RUNTESTFLAGS="c.exp=libgomp.c/scan-22.c --target_board='unix{-m32}'"
> $ cd {build_dir}/x86_64-linux/libgomp/testsuite && make check
> RUNTESTFLAGS="c.exp=libgomp.c/scan-22.c --target_board='unix{-m32\
> -march=cascadelake}'"
> $ cd {build_dir}/x86_64-linux/libgomp/testsuite && make check
> RUNTESTFLAGS="c.exp=libgomp.c/scan-22.c --target_board='unix{-m64}'"
> $ cd {build_dir}/x86_64-linux/libgomp/testsuite && make check
> RUNTESTFLAGS="c.exp=libgomp.c/scan-22.c --target_board='unix{-m64\
> -march=cascadelake}'"
> $ cd {build_dir}/x86_64-linux/libgomp/testsuite && make check
> RUNTESTFLAGS="c++.exp=libgomp.c++/scan-9.C --target_board='unix{-m32}'"
> $ cd {build_dir}/x86_64-linux/libgomp/testsuite && make check
> RUNTESTFLAGS="c++.exp=libgomp.c++/scan-9.C --target_board='unix{-m32\
> -march=cascadelake}'"
> $ cd {build_dir}/x86_64-linux/libgomp/testsuite && make check
> RUNTESTFLAGS="c++.exp=libgomp.c++/scan-9.C --target_board='unix{-m64}'"
> $ cd {build_dir}/x86_64-linux/libgomp/testsuite && make check
> RUNTESTFLAGS="c++.exp=libgomp.c++/scan-9.C --target_board='unix{-m64\
> -march=cascadelake}'"
>
I'll post a patch to add -fvect-cost-model=cheap to them.
> (Please do not reply to this email, for question about this report, contact
> me at skpgkp2 at gmail dot com)
--
BR,
Hongtao
