On Linux/x86_64,

5fdb150cd4bf8f2da335e3f5c3a17aafcbc66dbe is the first bad commit
commit 5fdb150cd4bf8f2da335e3f5c3a17aafcbc66dbe
Author: Julian Brown <jul...@codesourcery.com>
Date:   Mon Aug 14 12:41:56 2023 +0000

    OpenMP/OpenACC: Rework clause expansion and nested struct handling

caused

FAIL: c-c++-common/gomp/target-enter-data-1.c scan-tree-dump-times gimple 
"map\\(struct:\\*\\(f->bars \\+ \\(sizetype\\) \\(\\([^\\)]+\\) n \\* 16\\)\\) 
\\[len: 1\\]\\) map\\(alloc:[a-z0-9\\._]+->vectors \\[len: 0\\]\\) 
map\\(to:\\*_[0-9]+ \\[len: _[0-9]+\\]\\) map\\(attach:[a-z0-9\\._]+->vectors 
\\[bias: [^\\]]+\\]\\)" 2
FAIL: c-c++-common/gomp/target-enter-data-1.c  -std=c++14  scan-tree-dump-times 
gimple "map\\(struct:\\*\\(f->bars \\+ \\(sizetype\\) \\(\\([^\\)]+\\) n \\* 
16\\)\\) \\[len: 1\\]\\) map\\(alloc:[a-z0-9\\._]+->vectors \\[len: 0\\]\\) 
map\\(to:\\*_[0-9]+ \\[len: _[0-9]+\\]\\) map\\(attach:[a-z0-9\\._]+->vectors 
\\[bias: [^\\]]+\\]\\)" 2
FAIL: c-c++-common/gomp/target-enter-data-1.c  -std=c++17  scan-tree-dump-times 
gimple "map\\(struct:\\*\\(f->bars \\+ \\(sizetype\\) \\(\\([^\\)]+\\) n \\* 
16\\)\\) \\[len: 1\\]\\) map\\(alloc:[a-z0-9\\._]+->vectors \\[len: 0\\]\\) 
map\\(to:\\*_[0-9]+ \\[len: _[0-9]+\\]\\) map\\(attach:[a-z0-9\\._]+->vectors 
\\[bias: [^\\]]+\\]\\)" 2
FAIL: c-c++-common/gomp/target-enter-data-1.c  -std=c++20  scan-tree-dump-times 
gimple "map\\(struct:\\*\\(f->bars \\+ \\(sizetype\\) \\(\\([^\\)]+\\) n \\* 
16\\)\\) \\[len: 1\\]\\) map\\(alloc:[a-z0-9\\._]+->vectors \\[len: 0\\]\\) 
map\\(to:\\*_[0-9]+ \\[len: _[0-9]+\\]\\) map\\(attach:[a-z0-9\\._]+->vectors 
\\[bias: [^\\]]+\\]\\)" 2
FAIL: c-c++-common/gomp/target-enter-data-1.c  -std=c++98  scan-tree-dump-times 
gimple "map\\(struct:\\*\\(f->bars \\+ \\(sizetype\\) \\(\\([^\\)]+\\) n \\* 
16\\)\\) \\[len: 1\\]\\) map\\(alloc:[a-z0-9\\._]+->vectors \\[len: 0\\]\\) 
map\\(to:\\*_[0-9]+ \\[len: _[0-9]+\\]\\) map\\(attach:[a-z0-9\\._]+->vectors 
\\[bias: [^\\]]+\\]\\)" 2

with GCC configured with

../../gcc/configure 
--prefix=/export/users/haochenj/src/gcc-bisect/master/master/r14-6515/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/target-enter-data-1.c 
--target_board='unix{-m32}'"
$ cd {build_dir}/gcc && make check 
RUNTESTFLAGS="gomp.exp=c-c++-common/gomp/target-enter-data-1.c 
--target_board='unix{-m32\ -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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