Regressions on master at commit r17-2423 vs commit r17-2420 on Linux/x86_64

[Haochen Jiang via Gcc-regression]

Regressions on master at commit r17-2423 vs commit r17-2420 on Linux/x86_64
New failures:

New passes:
FAIL: gfortran.dg/maxlocval_3.f90   -O1  execution test
FAIL: gfortran.dg/maxlocval_3.f90   -O1  (test for excess errors)