On Linux/x86_64,

c7f4be78cb61006492d16375aba5392f580cd633 is the first bad commit
commit c7f4be78cb61006492d16375aba5392f580cd633
Author: Richard Biener <rguent...@suse.de>
Date:   Thu Sep 17 11:48:36 2020 +0200

    CSE negated multiplications and divisions

caused

FAIL: gfortran.dg/array_constructor_11.f90   -O3 -fomit-frame-pointer 
-funroll-loops -fpeel-loops -ftracer -finline-functions  execution test
FAIL: gfortran.dg/array_constructor_11.f90   -O3 -g  execution test

with GCC configured with

../../gcc/configure 
--prefix=/local/skpandey/gccwork/toolwork/gcc-bisect-master/master/r11-3258/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="dg.exp=gfortran.dg/array_constructor_11.f90 
--target_board='unix{-m64}'"

(Please do not reply to this email, for question about this report, contact me 
at skpgkp2 at gmail dot com)

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