re PR fortran/82567 ([6/7/8] gfortran takes a long time to compile a simple implied-do with -Optimization.)

2017-10-18  Thomas Koenig  <tkoenig@gcc.gnu.org>

	PR fortran/82567
	* frontend-passes.c (combine_array_constructor): If an array
	constructor is all constants and has more elements than a small
	constant, don't convert a*[b,c] to [a*b,a*c] to reduce compilation
	times.

2017-10-18  Thomas Koenig  <tkoenig@gcc.gnu.org>

	PR fortran/82567
	* gfortran.dg/array_constructor_51.f90: New test.

From-SVN: r253872