re PR fortran/49755 (ALLOCATE with STAT= produces invalid code for already allocated...

re PR fortran/49755 (ALLOCATE with STAT= produces invalid code for already allocated vars)

2011-07-26  Daniel Carrera  <dcarrera@gmail.com>

	PR fortran/49755
	* trans.c (gfc_allocate_using_malloc): Change function signature.
	Return nothing. New parameter "pointer". Eliminate temorary variables.
	(gfc_allocate_using_lib): Ditto.
	(gfc_allocate_allocatable): Ditto. Update call to gfc_allocate_using_lib
	and gfc_allocate_using_malloc. Do not free and then reallocate a
	variable that is already allocated.
	(gfc_likely): New function. Basedon gfc_unlikely.
	* trans-array.c (gfc_array_init_size): New parameter "descriptor_block".
	Instructions to modify the array descriptor are stored in this block
	while other instructions continue to be stored in "pblock".
	(gfc_array_allocate): Update call to gfc_array_init_size. Move the
	descriptor_block so that the array descriptor is only updated if
	the array was allocated successfully.
	Update calls to gfc_allocate_allocatable and gfc_allocate_using_malloc.
	* trans.h (gfc_allocate_allocatable): Change function signature.
	Function now returns void.
	(gfc_allocate_using_lib): Ditto, and new function parameter.
	(gfc_allocate_using_malloc): Ditto.
	* trans-openmp.c (gfc_omp_clause_default_ctor,
	gfc_omp_clause_copy_ctor,gfc_trans_omp_array_reduction): Replace a call
	to gfc_allocate_allocatable with gfc_allocate_using_malloc.
	* trans-stmt.c (gfc_trans_allocate): Update function calls for
	gfc_allocate_allocatable and gfc_allocate_using_malloc.

2011-07-26  Daniel Carrera  <dcarrera@gmail.com>

	PR fortran/49755
	* gfortran.dg/multiple_allocation_1.f90: Fix test. Allocating an
	allocated array should *not* change its size.
	* gfortran.dg/multiple_allocation_3.f90: New test.

From-SVN: r176822