[patch, fortran-dev] PR29962 - simplifiers for SPREAD and UNPACK

[Daniel Franke]

Two more simplifiers: SPREAD and UNPACK.

gcc/fortran/:
2009-04-05  Daniel Franke  <franke.daniel@gmail.com>

	PR fortran/25104
	PR fortran/29962
	* array.c (gfc_append_constructor): Added NULL-check.
	* check.c (gfc_check_spread): Check DIM.
	(gfc_check_unpack): Check that the ARRAY arguments provides enough 
	values for MASK.
	* intrinsic.h (gfc_simplify_spread): New prototype.
	(gfc_simplify_unpack): Likewise.
	* intrinsic.c (add_functions): Added new simplifier callbacks.
	* simplify.c (gfc_simplify_spread): New.
	(gfc_simplify_unpack): New.
	* expr.c (check_transformational): Allow additional transformational
	intrinsics in initialization expression.

gcc/testsuite/:
2009-04-05  Daniel Franke  <franke.daniel@gmail.com>

	PR fortran/25104
	PR fortran/29962
	* gfortran.dg/spread_init_expr.f03: New.
	* gfortran.dg/unpack_init_expr.f03: New.
	* gfortran.dg/intrinsic_argument_conformance_2.f90: Adjusted error message.

Regression tested on i686-pc-linux-gnu.
Ok for dev-branch and (eventually) trunk?

Cheers

	Daniel


P.S. CSHIFT, EOSHIFT, MINVAL/MAXVAL, MINLOC/MAXLOC to go.

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