Regression on mainline

[Steve Kargl]

A commit made on June 30th has lead to the following
regression in gfortran.

FAIL: gfortran.fortran-torture/execute/intrinsic_nearest.f90 execution,  -O0 
FAIL: gfortran.fortran-torture/execute/intrinsic_nearest.f90 execution,  -O1 
FAIL: gfortran.fortran-torture/execute/intrinsic_nearest.f90 execution,  -O2 
FAIL: gfortran.fortran-torture/execute/intrinsic_nearest.f90 execution,  -O2 -fomit-frame-pointer -finline-functions 
FAIL: gfortran.fortran-torture/execute/intrinsic_nearest.f90 execution,  -O2 -fomit-frame-pointer -finline-functions -funroll-loops 
FAIL: gfortran.fortran-torture/execute/intrinsic_nearest.f90 execution,  -O2 -fomit-frame-pointer -finline-functions -funroll-all-loops 
FAIL: gfortran.fortran-torture/execute/intrinsic_nearest.f90 execution,  -O2 -fno-repack-arrays 
FAIL: gfortran.fortran-torture/execute/intrinsic_nearest.f90 execution,  -O3 -g 
FAIL: gfortran.fortran-torture/execute/intrinsic_nearest.f90 execution,  -Os 

AFAICT, the commit causing the problem was not to the gfortran
frontend or its runtime library, libgfortran.  I believe a change
to the middle end or back end is the culprit, but I have only been
able to narrow down the problem to a June 30th commit.

-- 
Steve