re PR fortran/79930 (Potentially Missed Optimisation for MATMUL / DOT_PRODUCT)

re PR fortran/79930 (Potentially Missed Optimisation for MATMUL / DOT_PRODUCT)

2017-05-08  Thomas Koenig  <tkoenig@gcc.gnu.org>

	PR fortran/79930
	* frontend-passes.c (matmul_to_var_expr): New function,
	add prototype.
	(matmul_to_var_code):  Likewise.
	(optimize_namespace):  Use them from gfc_code_walker.

2017-05-08  Thomas Koenig  <tkoenig@gcc.gnu.org>

	PR fortran/79930
	* gfortran.dg/inline_transpose_1.f90:  Add
	-finline-matmul-limit=0 to options.
	* gfortran.dg/matmul_5.f90:  Likewise.
	* gfortran.dg/vect/vect-8.f90: Likewise.
	* gfortran.dg/inline_matmul_14.f90:  New test.
	* gfortran.dg/inline_matmul_15.f90:  New test.

From-SVN: r247755