Regressions on native/master at commit r17-1071 vs commit r17-1065 on Linux/x86_64

[Haochen Jiang via Gcc-regression]

Regressions on master at commit r17-1071 vs commit r17-1065 on Linux/x86_64
New failures:
FAIL: gfortran.dg/coarray/proc_pointer_assign_1.f90 -fcoarray=lib -pthread  -O2 
 -lcaf_shmem -lrt execution test

New passes:
FAIL: gfortran.dg/coarray/coarray_allocated.f90 -fcoarray=lib -pthread  -O2  
-lcaf_shmem -lrt execution test