On Linux/x86_64,

a7f52181a6a16bb6d216ff41d9c6a9da95c19b5c is the first bad commit
commit a7f52181a6a16bb6d216ff41d9c6a9da95c19b5c
Author: Richard Biener <rguent...@suse.de>
Date:   Fri Jan 29 16:02:36 2021 +0100

    rtl-optimization/98863 - tame i386 specific RPAD pass

caused

FAIL: gcc.c-torture/compile/20051216-1.c   -O1  (internal compiler error)
FAIL: gcc.c-torture/compile/20051216-1.c   -O1  (test for excess errors)

with GCC configured with

../../gcc/configure 
--prefix=/local/skpandey/gccwork/toolwork/gcc-bisect-master/master/r11-6981/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="compile.exp=gcc.c-torture/compile/20051216-1.c 
--target_board='unix{-m64\ -march=cascadelake}'"

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

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