re PR tree-optimization/37031 (ICE for h264ref in gather_interchange_stats with ...

re PR tree-optimization/37031 (ICE for h264ref in gather_interchange_stats with -ftree-loop-linear)

	PR tree-optimization/37031
	* lambda-code.c (lambda_collect_parameters): Call pointer_set_destroy
	on parameter_set.
	(build_access_matrix): Reserve correct size for AM_MATRIX vector,
	allocate it using gc instead of heap, use VEC_quick_push instead of
	VEC_safe_push.
	* graphite.c (build_access_matrix): Allocate AM_MATRIX vector using gc
	instead of heap, use VEC_quick_push instead of VEC_safe_push.
	* tree-data-ref.h (struct access_matrix): Change matrix to gc
	allocated vector from heap allocated.
	* lambda.h: Add DEF_VEC_ALLOC_P for gc allocated lambda_vector.
	* tree-loop-linear.c (linear_transform_loops): Allocate nest
	vector only after perfect_loop_nest_depth call.

From-SVN: r143188