Regressions on master at commit r16-7647 vs commit r16-7645 on Linux/x86_64

[Haochen Jiang]

Regressions on master at commit r16-7647 vs commit r16-7645 on Linux/x86_64
New failures:
FAIL: gfortran.dg/gomp/map-subarray-4.f90   -O   scan-tree-dump gimple " map\\(release:MEM <struct t\\[0:\\]> \\[\\(struct t\\[0:\\] \\*\\)_[0-9]+\\]\\[_[0-9]+\\]\\.den1 \\[pointer set, len: 88\\]\\) map\\(release:MEM <struct t\\[0:\\]> \\[\\(struct t\\[0:\\] \\*\\)_[0-9]+\\]\\[_[0-9]+\\]\\.den2 \\[pointer set, len: 88\\]\\) "
FAIL: gfortran.dg/gomp/map-subarray-4.f90   -O   scan-tree-dump gimple " map\\(struct_unord:MEM <struct t\\[0:\\]> \\[\\(struct t\\[0:\\] \\*\\)_[0-9]+\\] \\[len: 2\\]\\) map\\(to:MEM <struct t\\[0:\\]> \\[\\(struct t\\[0:\\] \\*\\)_[0-9]+\\]\\[_[0-9]+\\]\\.den1 \\[pointer set, len: 88\\]\\) map\\(to:MEM <struct t\\[0:\\]> \\[\\(struct t\\[0:\\] \\*\\)_[0-9]+\\]\\[_[0-9]+\\]\\.den2 \\[pointer set, len: 88\\]\\) "
FAIL: libgomp.fortran/map-subarray-16.f90   -O0  execution test
FAIL: libgomp.fortran/map-subarray-16.f90   -O0  execution test
FAIL: libgomp.fortran/map-subarray-16.f90   -O1  execution test
FAIL: libgomp.fortran/map-subarray-16.f90   -O1  execution test
FAIL: libgomp.fortran/map-subarray-16.f90   -O2  execution test
FAIL: libgomp.fortran/map-subarray-16.f90   -O2  execution test
FAIL: libgomp.fortran/map-subarray-16.f90   -O3 -fomit-frame-pointer -funroll-loops -fpeel-loops -ftracer -finline-functions  execution test
FAIL: libgomp.fortran/map-subarray-16.f90   -O3 -fomit-frame-pointer -funroll-loops -fpeel-loops -ftracer -finline-functions  execution test
FAIL: libgomp.fortran/map-subarray-16.f90   -O3 -g  execution test
FAIL: libgomp.fortran/map-subarray-16.f90   -O3 -g  execution test
FAIL: libgomp.fortran/map-subarray-16.f90   -Os  execution test
FAIL: libgomp.fortran/map-subarray-16.f90   -Os  execution test

New passes: