[r17-2404 Regression] FAIL: c-c++-common/gomp/reverse-offload-1.c -std=c++98 scan-tree-dump-times omplower "omp declare target[^ ]" 3 on Linux/x86_64

On Linux/x86_64,

2468c79741f97c2aa0cbb4baaccb86fd4a150910 is the first bad commit
commit 2468c79741f97c2aa0cbb4baaccb86fd4a150910
Author: Tobias Burnus <[email protected]>
Date:   Wed Jul 15 08:43:26 2026 +0200

    OpenMP: Handle 'device_type(host)' on 'target'

caused

FAIL: c-c++-common/gomp/reverse-offload-1.c scan-tree-dump-times omplower "omp declare target[^ ]" 3
FAIL: c-c++-common/gomp/reverse-offload-1.c  -std=c++20  scan-tree-dump-times omplower "omp declare target[^ ]" 3
FAIL: c-c++-common/gomp/reverse-offload-1.c  -std=c++29  scan-tree-dump-times omplower "omp declare target[^ ]" 3
FAIL: c-c++-common/gomp/reverse-offload-1.c  -std=c++98  scan-tree-dump-times omplower "omp declare target[^ ]" 3

with GCC configured with

../../gcc/configure --prefix=/export/users3/haochenj/src/gcc-bisect/master/master/r17-2404/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=c-c++-common/gomp/reverse-offload-1.c --target_board='unix{-m32}'"
$ cd {build_dir}/gcc && make check RUNTESTFLAGS="gomp.exp=c-c++-common/gomp/reverse-offload-1.c --target_board='unix{-m32\ -march=cascadelake}'"
$ cd {build_dir}/gcc && make check RUNTESTFLAGS="gomp.exp=c-c++-common/gomp/reverse-offload-1.c --target_board='unix{-m64}'"
$ cd {build_dir}/gcc && make check RUNTESTFLAGS="gomp.exp=c-c++-common/gomp/reverse-offload-1.c --target_board='unix{-m64\ -march=cascadelake}'"

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(However, please make sure that there is no potential problems with AVX512.)