On Linux/x86_64,

a350a74d6113e3a84943266eb691275951c109d9 is the first bad commit
commit a350a74d6113e3a84943266eb691275951c109d9
Author: Sebastian Huber <sebastian.hu...@embedded-brains.de>
Date:   Sat Oct 21 15:52:15 2023 +0200

    gcov: Add gen_counter_update()

caused

FAIL: gcc.dg/gomp/pr27573.c (internal compiler error: verify_gimple failed)
FAIL: gcc.dg/gomp/pr27573.c (test for excess errors)
FAIL: gcc.dg/profile-update-warning.c (internal compiler error: verify_gimple 
failed)
FAIL: gcc.dg/profile-update-warning.c (test for excess errors)
FAIL: gfortran.dg/gomp/pr27573.f90   -O  (internal compiler error: 
verify_gimple failed)
FAIL: gfortran.dg/gomp/pr27573.f90   -O  (test for excess errors)

with GCC configured with

../../gcc/configure 
--prefix=/export/users/haochenj/src/gcc-bisect/master/master/r14-5578/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="gomp.exp=gcc.dg/gomp/pr27573.c 
--target_board='unix{-m32}'"
$ cd {build_dir}/gcc && make check RUNTESTFLAGS="gomp.exp=gcc.dg/gomp/pr27573.c 
--target_board='unix{-m32\ -march=cascadelake}'"
$ cd {build_dir}/gcc && make check RUNTESTFLAGS="gomp.exp=gcc.dg/gomp/pr27573.c 
--target_board='unix{-m64}'"
$ cd {build_dir}/gcc && make check RUNTESTFLAGS="gomp.exp=gcc.dg/gomp/pr27573.c 
--target_board='unix{-m64\ -march=cascadelake}'"
$ cd {build_dir}/gcc && make check 
RUNTESTFLAGS="dg.exp=gcc.dg/profile-update-warning.c 
--target_board='unix{-m32}'"
$ cd {build_dir}/gcc && make check 
RUNTESTFLAGS="dg.exp=gcc.dg/profile-update-warning.c --target_board='unix{-m32\ 
-march=cascadelake}'"
$ cd {build_dir}/gcc && make check 
RUNTESTFLAGS="gomp.exp=gfortran.dg/gomp/pr27573.f90 --target_board='unix{-m32}'"
$ cd {build_dir}/gcc && make check 
RUNTESTFLAGS="gomp.exp=gfortran.dg/gomp/pr27573.f90 --target_board='unix{-m32\ 
-march=cascadelake}'"
$ cd {build_dir}/gcc && make check 
RUNTESTFLAGS="gomp.exp=gfortran.dg/gomp/pr27573.f90 --target_board='unix{-m64}'"
$ cd {build_dir}/gcc && make check 
RUNTESTFLAGS="gomp.exp=gfortran.dg/gomp/pr27573.f90 --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.)

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