[r12-2300 Regression] FAIL: gcc.dg/vect/vect-reduc-dot-9.c -flto -ffat-lto-objects execution test on Linux/x86_64

[sunil.k.pandey via Gcc-patches]

On Linux/x86_64,

1e0ab1c4ba6159ad7ce71c6cddd5e04d2a636742 is the first bad commit
commit 1e0ab1c4ba6159ad7ce71c6cddd5e04d2a636742
Author: Tamar Christina <tamar.christ...@arm.com>
Date:   Wed Jul 14 15:21:40 2021 +0100

    middle-end: Add tests middle end generic tests for sign differing 
dotproduct.

caused

FAIL: gcc.dg/vect/vect-reduc-dot-10.c execution test
FAIL: gcc.dg/vect/vect-reduc-dot-10.c -flto -ffat-lto-objects execution test
FAIL: gcc.dg/vect/vect-reduc-dot-11.c execution test
FAIL: gcc.dg/vect/vect-reduc-dot-11.c -flto -ffat-lto-objects execution test
FAIL: gcc.dg/vect/vect-reduc-dot-12.c execution test
FAIL: gcc.dg/vect/vect-reduc-dot-12.c -flto -ffat-lto-objects execution test
FAIL: gcc.dg/vect/vect-reduc-dot-13.c execution test
FAIL: gcc.dg/vect/vect-reduc-dot-13.c -flto -ffat-lto-objects execution test
FAIL: gcc.dg/vect/vect-reduc-dot-14.c execution test
FAIL: gcc.dg/vect/vect-reduc-dot-14.c -flto -ffat-lto-objects execution test
FAIL: gcc.dg/vect/vect-reduc-dot-15.c execution test
FAIL: gcc.dg/vect/vect-reduc-dot-15.c -flto -ffat-lto-objects execution test
FAIL: gcc.dg/vect/vect-reduc-dot-16.c execution test
FAIL: gcc.dg/vect/vect-reduc-dot-16.c -flto -ffat-lto-objects execution test
FAIL: gcc.dg/vect/vect-reduc-dot-17.c execution test
FAIL: gcc.dg/vect/vect-reduc-dot-17.c -flto -ffat-lto-objects execution test
FAIL: gcc.dg/vect/vect-reduc-dot-18.c execution test
FAIL: gcc.dg/vect/vect-reduc-dot-18.c -flto -ffat-lto-objects execution test
FAIL: gcc.dg/vect/vect-reduc-dot-22.c -flto -ffat-lto-objects  
scan-tree-dump-not vect "vect_recog_dot_prod_pattern: detected"
FAIL: gcc.dg/vect/vect-reduc-dot-22.c scan-tree-dump-not vect 
"vect_recog_dot_prod_pattern: detected"
FAIL: gcc.dg/vect/vect-reduc-dot-9.c execution test
FAIL: gcc.dg/vect/vect-reduc-dot-9.c -flto -ffat-lto-objects execution test

with GCC configured with

../../gcc/configure 
--prefix=/local/skpandey/gccwork/toolwork/gcc-bisect-master/master/r12-2300/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-reduc-dot-10.c 
--target_board='unix{-m32}'"
$ cd {build_dir}/gcc && make check 
RUNTESTFLAGS="vect.exp=gcc.dg/vect/vect-reduc-dot-10.c 
--target_board='unix{-m32\ -march=cascadelake}'"
$ cd {build_dir}/gcc && make check 
RUNTESTFLAGS="vect.exp=gcc.dg/vect/vect-reduc-dot-10.c 
--target_board='unix{-m64}'"
$ cd {build_dir}/gcc && make check 
RUNTESTFLAGS="vect.exp=gcc.dg/vect/vect-reduc-dot-10.c 
--target_board='unix{-m64\ -march=cascadelake}'"
$ cd {build_dir}/gcc && make check 
RUNTESTFLAGS="vect.exp=gcc.dg/vect/vect-reduc-dot-11.c 
--target_board='unix{-m32}'"
$ cd {build_dir}/gcc && make check 
RUNTESTFLAGS="vect.exp=gcc.dg/vect/vect-reduc-dot-11.c 
--target_board='unix{-m32\ -march=cascadelake}'"
$ cd {build_dir}/gcc && make check 
RUNTESTFLAGS="vect.exp=gcc.dg/vect/vect-reduc-dot-11.c 
--target_board='unix{-m64}'"
$ cd {build_dir}/gcc && make check 
RUNTESTFLAGS="vect.exp=gcc.dg/vect/vect-reduc-dot-11.c 
--target_board='unix{-m64\ -march=cascadelake}'"
$ cd {build_dir}/gcc && make check 
RUNTESTFLAGS="vect.exp=gcc.dg/vect/vect-reduc-dot-12.c 
--target_board='unix{-m32}'"
$ cd {build_dir}/gcc && make check 
RUNTESTFLAGS="vect.exp=gcc.dg/vect/vect-reduc-dot-12.c 
--target_board='unix{-m32\ -march=cascadelake}'"
$ cd {build_dir}/gcc && make check 
RUNTESTFLAGS="vect.exp=gcc.dg/vect/vect-reduc-dot-12.c 
--target_board='unix{-m64}'"
$ cd {build_dir}/gcc && make check 
RUNTESTFLAGS="vect.exp=gcc.dg/vect/vect-reduc-dot-12.c 
--target_board='unix{-m64\ -march=cascadelake}'"
$ cd {build_dir}/gcc && make check 
RUNTESTFLAGS="vect.exp=gcc.dg/vect/vect-reduc-dot-13.c 
--target_board='unix{-m32}'"
$ cd {build_dir}/gcc && make check 
RUNTESTFLAGS="vect.exp=gcc.dg/vect/vect-reduc-dot-13.c 
--target_board='unix{-m32\ -march=cascadelake}'"
$ cd {build_dir}/gcc && make check 
RUNTESTFLAGS="vect.exp=gcc.dg/vect/vect-reduc-dot-13.c 
--target_board='unix{-m64}'"
$ cd {build_dir}/gcc && make check 
RUNTESTFLAGS="vect.exp=gcc.dg/vect/vect-reduc-dot-13.c 
--target_board='unix{-m64\ -march=cascadelake}'"
$ cd {build_dir}/gcc && make check 
RUNTESTFLAGS="vect.exp=gcc.dg/vect/vect-reduc-dot-14.c 
--target_board='unix{-m32}'"
$ cd {build_dir}/gcc && make check 
RUNTESTFLAGS="vect.exp=gcc.dg/vect/vect-reduc-dot-14.c 
--target_board='unix{-m32\ -march=cascadelake}'"
$ cd {build_dir}/gcc && make check 
RUNTESTFLAGS="vect.exp=gcc.dg/vect/vect-reduc-dot-14.c 
--target_board='unix{-m64}'"
$ cd {build_dir}/gcc && make check 
RUNTESTFLAGS="vect.exp=gcc.dg/vect/vect-reduc-dot-14.c 
--target_board='unix{-m64\ -march=cascadelake}'"
$ cd {build_dir}/gcc && make check 
RUNTESTFLAGS="vect.exp=gcc.dg/vect/vect-reduc-dot-15.c 
--target_board='unix{-m32}'"
$ cd {build_dir}/gcc && make check 
RUNTESTFLAGS="vect.exp=gcc.dg/vect/vect-reduc-dot-15.c 
--target_board='unix{-m32\ -march=cascadelake}'"
$ cd {build_dir}/gcc && make check 
RUNTESTFLAGS="vect.exp=gcc.dg/vect/vect-reduc-dot-15.c 
--target_board='unix{-m64}'"
$ cd {build_dir}/gcc && make check 
RUNTESTFLAGS="vect.exp=gcc.dg/vect/vect-reduc-dot-15.c 
--target_board='unix{-m64\ -march=cascadelake}'"
$ cd {build_dir}/gcc && make check 
RUNTESTFLAGS="vect.exp=gcc.dg/vect/vect-reduc-dot-16.c 
--target_board='unix{-m32}'"
$ cd {build_dir}/gcc && make check 
RUNTESTFLAGS="vect.exp=gcc.dg/vect/vect-reduc-dot-16.c 
--target_board='unix{-m32\ -march=cascadelake}'"
$ cd {build_dir}/gcc && make check 
RUNTESTFLAGS="vect.exp=gcc.dg/vect/vect-reduc-dot-16.c 
--target_board='unix{-m64}'"
$ cd {build_dir}/gcc && make check 
RUNTESTFLAGS="vect.exp=gcc.dg/vect/vect-reduc-dot-16.c 
--target_board='unix{-m64\ -march=cascadelake}'"
$ cd {build_dir}/gcc && make check 
RUNTESTFLAGS="vect.exp=gcc.dg/vect/vect-reduc-dot-17.c 
--target_board='unix{-m32}'"
$ cd {build_dir}/gcc && make check 
RUNTESTFLAGS="vect.exp=gcc.dg/vect/vect-reduc-dot-17.c 
--target_board='unix{-m32\ -march=cascadelake}'"
$ cd {build_dir}/gcc && make check 
RUNTESTFLAGS="vect.exp=gcc.dg/vect/vect-reduc-dot-17.c 
--target_board='unix{-m64}'"
$ cd {build_dir}/gcc && make check 
RUNTESTFLAGS="vect.exp=gcc.dg/vect/vect-reduc-dot-17.c 
--target_board='unix{-m64\ -march=cascadelake}'"
$ cd {build_dir}/gcc && make check 
RUNTESTFLAGS="vect.exp=gcc.dg/vect/vect-reduc-dot-18.c 
--target_board='unix{-m32}'"
$ cd {build_dir}/gcc && make check 
RUNTESTFLAGS="vect.exp=gcc.dg/vect/vect-reduc-dot-18.c 
--target_board='unix{-m32\ -march=cascadelake}'"
$ cd {build_dir}/gcc && make check 
RUNTESTFLAGS="vect.exp=gcc.dg/vect/vect-reduc-dot-18.c 
--target_board='unix{-m64}'"
$ cd {build_dir}/gcc && make check 
RUNTESTFLAGS="vect.exp=gcc.dg/vect/vect-reduc-dot-18.c 
--target_board='unix{-m64\ -march=cascadelake}'"
$ cd {build_dir}/gcc && make check 
RUNTESTFLAGS="vect.exp=gcc.dg/vect/vect-reduc-dot-22.c 
--target_board='unix{-m32}'"
$ cd {build_dir}/gcc && make check 
RUNTESTFLAGS="vect.exp=gcc.dg/vect/vect-reduc-dot-22.c 
--target_board='unix{-m32\ -march=cascadelake}'"
$ cd {build_dir}/gcc && make check 
RUNTESTFLAGS="vect.exp=gcc.dg/vect/vect-reduc-dot-9.c 
--target_board='unix{-m32}'"
$ cd {build_dir}/gcc && make check 
RUNTESTFLAGS="vect.exp=gcc.dg/vect/vect-reduc-dot-9.c 
--target_board='unix{-m32\ -march=cascadelake}'"
$ cd {build_dir}/gcc && make check 
RUNTESTFLAGS="vect.exp=gcc.dg/vect/vect-reduc-dot-9.c 
--target_board='unix{-m64}'"
$ cd {build_dir}/gcc && make check 
RUNTESTFLAGS="vect.exp=gcc.dg/vect/vect-reduc-dot-9.c 
--target_board='unix{-m64\ -march=cascadelake}'"

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