path: root/gcc/ChangeLog.ptr

2007-06-14  Andrew Pinski  <andrew_pinski@playstation.sony.com>

	Merge mainline, revision 125733

2007-06-14  Andrew Pinski  <andrew_pinski@playstation.sony.com>

	* tree-vrp.c (compare_values_warnv): Fix spelling/grammer
	mistakes
	(extract_range_from_binary_expr): Likewise.
	* doc/c-tree.texi (POINTER_PLUS_EXPR): Likewise.
	* tree-ssa-loop-niter.c (assert_loop_rolls_lt): Add vertical
	whitespace.
	* tree-pretty-print.c (op_symbol_code <case POINTER_PLUS_EXPR>):
	Change print out to "+".
	* tree-scalar-evolution.c (instantiate_parameters_1):
	Use chrec_type instead of TREE_TYPE.
	* builtins.c (expand_builtin_strcat): Fix vertical whitespace.
	(std_expand_builtin_va_start): Fix whitespace.
	(fold_builtin_strstr): Use size_int instead of build_int_cst (sizetype.
	(fold_builtin_strchr): Likewise.
	(fold_builtin_strrchr): Likewise.
	(fold_builtin_strpbrk): Likewise.
	* fold-const.c (try_move_mult_to_index): Fix spelling/grammer
	mistakes.
	(fold_to_nonsharp_ineq_using_bound): Merge the two ifs at the end.
	(fold_binary): Fix spelling/grammer mistakes.
	* tree-ssa-ccp.c (maybe_fold_stmt_addition): Assert that only
	a POINTER_PLUS_EXPR is passed in.
	* tree-ssa-loop-ivopts.c (determine_base_object):
	Fix spelling/grammer mistakes.
	* expr.c (expand_expr_real_1): Likewise.
	* tree-data-ref.c (split_constant_offset): Likewise.
	* c-typeck.c (build_unary_op): Use fold_convert instead of convert
	for converting to sizetype.
	* tree.def (POINTER_PLUS_EXPR): Fix comment.
	* tree-ssa-forwprop.c (forward_propagate_addr_expr_1):
	Fix spelling/grammer mistakes.
	(phiprop_insert_phi): Likewise.
	* c-common.c (pointer_int_sum): Remove FIXME about
	POINTER_MINUS_EXPR.

2007-06-13  Andrew Pinski  <andrew_pinski@playstation.sony.com>

	* expr.c (expand_expr_real_1 <case POINTER_PLUS_EXPR>): Remove assert
	for checking the modes of the operands are the same.

2007-06-12  Andrew Pinski  <andrew_pinski@playstation.sony.com>

	* config/sparc/sparc.c (sparc_gimplify_va_arg): Use POINTER_PLUS_EXPR
	instead of PLUS_EXPR when the operand was a pointer.  Don't create a
	BIT_AND_EXPR for pointer types.

2007-06-12  Andrew Pinski  <andrew_pinski@playstation.sony.com>

	* config/mips/mips.c (mips_va_start): Use POINTER_PLUS_EXPR
	for pointers.
	(mips_gimplify_va_arg_expr): Likewise.
	Don't create BIT_AND_EXPR in a pointer type.

2007-06-12  Andrew Pinski  <andrew_pinski@playstation.sony.com>

	Merge mainline, revision 125658 

2007-06-11  Andrew Pinski  <andrew_pinski@playstation.sony.com>

	Merge mainline, revision 125611

2007-06-07  Andrew Pinski  <andrew_pinski@playstation.sony.com>

	* matrix-reorg.c (collect_data_for_malloc_call): Stmt
	will now only be either INDIRECT_REF and POINTER_PLUS_EXPR.
	Offset only holds something for PLUS_EXPR.
	(ssa_accessed_in_tree): Handle POINTER_PLUS_EXPR just as
	a PLUS_EXPR.
	(analyze_transpose): POINTER_PLUS_EXPR will only show up now
	and not PLUS_EXPR.
	(analyze_accesses_for_modify_stmt): Likewise.
	Remove comment about the type being integral type as it is
	wrong now.
	(analyze_matrix_accesses): Handle POINTER_PLUS_EXPR as
	PLUS_EXPR.
	(transform_access_sites): POINTER_PLUS_EXPR will only show up now
	and not PLUS_EXPR.
	Correct the type which the artimentic is done in (is now
	sizetype).
	Reindent one loop.

2007-06-07  Andrew Pinski  <andrew_pinski@playstation.sony.com>

	* config/ia64/ia64.c (ia64_gimplify_va_arg): Use
	POINTER_PLUS_EXPR for pointers and create the
	BIT_AND_EXPR in sizetype.
	* config/s390/s390.c (s390_va_start): Use POINTER_PLUS_EXPR
	for pointers instead of PLUS_EXPR.
	(s390_gimplify_va_arg): Likewise.

2007-06-07  Andrew Pinski  <andrew_pinski@playstation.sony.com>

	* config/frv/frv.c (frv_expand_builtin_va_start): Use sizetype
	with make_tree, instead of a pointer type.
	* config/pa/pa.c (reloc_needed): Handle POINTER_PLUS_EXPR
	as PLUS_EXPR/MINUS_EXPR.
	(hppa_gimplify_va_arg_expr): Don't create MINUS_EXPR or
	PLUS_EXPR for pointers, instead use POINTER_PLUS_EXPR.
	Don't use BIT_AND_EXPR on a pointer type, convert the
	expression to sizetype first.

2007-06-06  Andrew Pinski  <andrew_pinski@playstation.sony.com>

	* tree-ssa-forwprop.c
	(forward_propagate_addr_into_variable_array_index):
	Don't expect a statement for the size 1 case.
	Use the offset variable for the size 1 case.
	Look through use-def chains to find the mutliply
	for the non size 1 case.
	(forward_propagate_addr_expr_1): Call
	forward_propagate_addr_into_variable_array_index with
	the SSA_NAME instead of the statement.

2007-06-06  Andrew Pinski  <andrew_pinski@playstation.sony.com>

	PR tree-opt/32225
	* tree-scalar-evolution.c (follow_ssa_edge_in_rhs <case
	POINTER_PLUS_EXPR>): Do not change type_rhs.
	(follow_ssa_edge_in_rhs <case POINTER_PLUS_EXPR, case PLUS_EXPR>):
	Use the code of the orginal expression instead of just PLUS_EXPR.
	Also use type_rhs where TREE_TYPE (rhs) was used (reverting back
	to the trunk).

2007-06-03  Andrew Pinski  <andrew_pinski@playstation.sony.com>

	* tree-predcom.c (ref_at_iteration): If we have a pointer
	type do the multiplication in sizetype.

2007-06-01  Andrew Pinski  <andrew_pinski@playstation.sony.com>

	Merge mainline, revision 125285

2007-05-31  Andrew Pinski  <andrew_pinski@playstation.sony.com>

	* tree-vrp.c (extract_range_from_binary_expr): Handle
	MIN_EXPR/MAX_EXPR for pointers type.

	PR tree-opt/32167
	* tree-chrec.c (chrec_fold_plus): When either
	operand is zero, convert the other operand.

2007-05-30  Andrew Pinski  <andrew_pinski@playstation.sony.com>

	* builtins.c (std_expand_builtin_va_start): Use
	sizetype for the call to make_tree and then convert
	to the pointer type.

2007-05-30  Andrew Pinski  <andrew_pinski@playstation.sony.com>

	PR tree-op/32145
	* tree-vrp.c (extract_range_from_assert): Create
	POINTER_PLUS_EXPR for pointer types.

	PR tree-opt/32144
	* tree-chrec.c (chrec_fold_plus_poly_poly): If the
	first chrec is a pointer type, then the second should
	be sizetype and not the first's type.	

2007-05-28  Andrew Pinski  <andrew_pinski@playstation.sony.com>

	* fold-const.c (try_move_mult_to_index):
	Say why we strip the nops.
	(fold_unary <case NOP_EXPR>): Remove
	TODO as we cannot get that case.
	* tree-chrec.c (chrec_fold_plus):
	Cleanup the code to chose which
	tree code is used.
	(chrec_convert_rhs): Add comment on
	why the increment is sizetype for
	pointers.
	* tree-mudflap.c (mf_xform_derefs_1):
	Use size_int instead of build_int_cst.
	* tree-ssa-loop-prefetch.c (issue_prefetch_ref): Likewise.

2007-05-21  Andrew Pinski  <andrew_pinski@playstation.sony.com>

	PR tree-opt/32015
	* tree.c (build2_stat): Make sure that
	MULT_EXPR is not used with pointers.
	* tree-chrec.c (chrec_apply): Use chrec_convert_rhs
	on the argument x instead of chrec_convert.

2007-05-20  Kaz Kojima  <kkojima@gcc.gnu.org>

	* config/sh/sh.c (sh_va_start): Call make_tree with sizetype
	and convert its result to a pointer type.  Use POINTER_PLUS_EXPR
	for the pointer additions and also use size_int for the offsets.
	(sh_gimplify_va_arg_expr): Use POINTER_PLUS_EXPR for the pointer
	additions and also use size_int for the offsets.  Perform
	BIT_AND_EXPR on sizetype arguments.

2007-05-15  Andrew Pinski  <andrew_pinski@playstation.sony.com>

	* tree-ssa-forwprop (forward_propagate_addr_into_variable_array_index):
	Don't expect there to be a cast for the index as that
	does not exist anymore.
	(forward_propagate_addr_expr_1): Check for
	POINTER_PLUS_EXPR instead of PLUS_EXPR.
	Don't check for the first operand of the
	POINTER_PLUS_EXPR was the index as it
	cannot be.

2007-05-15  Richard Guenther  <rguenther@suse.de>

	* config/i386/i386.c (ix86_gimplify_va_arg): Use POINTER_PLUS_EXPR,
	perform BIT_AND_EXPR on sizetype arguments.

2007-05-15  Andrew Pinski  <andrew_pinski@playstation.sony.com>

	* config/rs6000/rs6000.c (rs6000_va_start): Use POINTER_PLUS_EXPR
	instead of PLUS_EXPR for pointer addition.
	(rs6000_va_start): Likewise.
	Also use sizetype for the offset.
	* tree-stdarg.c (va_list_counter_bump): Check for PLUS_EXPR
	and POINTER_PLUS_EXPR.
	(check_va_list_escapes): Likewise.

2007-05-14  Andrew Pinski  <andrew_pinski@playstation.sony.com>

	* config/i386/i386.c (ix86_va_start): Use POINTER_PLUS_EXPR
	for the pointer addition and also use size_int/sizetype
	for the offset.
	(ix86_gimplify_va_arg): Likewise.

2007-05-14  Andrew Pinski  <andrew_pinski@playstation.sony.com>

	Merge mainline, revision 124657
	* tree-data-ref.c (split_constant_offset): Handle
	POINTER_PLUS_EXPR
	exactly the same as PLUS_EXPR/MINUS_EXPR except for the offset
	needs to be calcuated using PLUS_EXPR instead of
	POINTER_PLUS_EXPR.
	* builtins.c (fold_builtin_memchr): Use POINTER_PLUS_EXPR
	instead of PLUS_EXPR for adding to a pointer.

2006-05-15  Zdenek Dvorak <dvorakz@suse.cz>

	* tree-ssa-loop-ivopts.c (determine_base_object): Abort for PLUS_EXPR
	in pointer type.

2007-05-12  Andrew Pinski  <andrew_pinski@playstation.sony.com>

	* tree-ssa-address.c (tree_mem_ref_addr): When adding
	the offset to the base, use POINTER_PLUS_EXPR.

2007-05-12  Andrew Pinski  <andrew_pinski@playstation.sony.com>

	* expr.c (expand_expr_addr_expr_1): Call expand_expr
	for the offset with the modifier as EXPAND_INITIALIZER
	if the modifier is EXPAND_INITIALIZER.
	(expand_expr_real_1 <case INTEGER_CST>): Don't force to
	a register if we had an overflow.

2007-05-10  Andrew Pinski  <andrew_pinski@playstation.sony.com>

	Merge mainline, revision 124602.

	* fold-const.c  (extract_array_ref): Make sure the offset
	is converted to sizetype.
	(try_move_mult_to_index): Strip the NOPs from the offset.
	(fold_binary <case POINTER_PLUS_EXPR>): Convert the second
	operand to sizetype before calling try_move_mult_to_index.
	* tree-ssa-loop-niter.c (number_of_iterations_lt_to_ne):
	For pointer types, use sizetype when
	creating MINUS_EXPR/PLUS_EXPRs.
	* tree-ssa-ccp.c (maybe_fold_stmt_indirect): Make sure
	the offset is converted to sizetype.

2007-05-11  Andrew Pinski  <andrew_pinski@playstation.sony.com>

	* config/spu/spu.c (spu_va_start): Create POINTER_PLUS_EXPR
	instead of PLUS_EXPR when doing addition on pointer
	types.  Use sizetype for the second operand.
	(spu_gimplify_va_arg_expr): Likewise.
	* tree-ssa.c (tree_ssa_useless_type_conversion_1):
	Convert the MIN/MAX of the inner type to the outer
	type before comparing them.

2007-05-09  Andrew Pinski  <andrew_pinski@playstation.sony.com>
	    Zdenek Dvorak  <dvorakz@suse.cz>

	* fold-const.c  (fold_to_nonsharp_ineq_using_bound): Don't
	use a pointer type for MINUS_EXPR.
	(fold_binary <case MINUS_EXPR>): Fold (PTR0 p+ A) - (PTR1 p+ B)
	into (PTR0 - PTR1) + (A - B). Fold (PTR0 p+ A) - PTR1 into
	(PTR0 - PTR1) + A iff (PTR0 - PTR1) simplifies.
	* tree-chrec.c (chrec_fold_plus_poly_poly): For
	POINTER_PLUS_EXPR, use a different right hand side type.
	Handle POINTER_PLUS_EXPR like PLUS_EXPR.
	(chrec_fold_plus_1): Likewise.
	(convert_affine_scev): Likewise.
	(chrec_convert_aggressive): Likewise.
	(chrec_fold_plus): For pointer types, use POINTER_PLUS_EXPR
	instead of PLUS_EXPR.
	(reset_evolution_in_loop): For pointer types, the new_evol
	should be sizetype.
	(chrec_convert_rhs): New function.
	* tree-chrec.h (chrec_convert_rhs): New prototype.
	(build_polynomial_chrec): For pointer types, the right hand
	side should be sizetype and not the same as the left hand side.
	* tree-scalar-evolution.c (add_to_evolution_1): Convert the
	increment using chrec_convert_rhs instead of chrec_convert.
	(follow_ssa_edge_in_rhs): Handle POINTER_PLUS_EXPR like
	PLUS_EXPR except for the right hand side's type will be
	sizetype.
	(interpret_rhs_modify_stmt): Handle POINTER_PLUS_EXPR.
	(fold_used_pointer_cast): Kill.
	(pointer_offset_p): Kill.
	(fold_used_pointer): Kill.
	(pointer_used_p): Kill.
	(analyze_scalar_evolution_1 <case GIMPLE_MODIFY_STMT>): Don't
	call fold_used_pointer.
	(instantiate_parameters_1): Convert the increment
	using chrec_convert_rhs instead of chrec_convert.
	Handle POINTER_PLUS_EXPR as PLUS_EXPR.
	* tree-ssa-loop-niter.c (split_to_var_and_offset): Handle
	POINTER_PLUS_EXPR as PLUS_EXPR.
	(assert_loop_rolls_lt): For pointer types, use sizetype when
	creating MINUS_EXPR/PLUS_EXPRs.
	(number_of_iterations_le): Likewise.
	(expand_simple_operations): POINTER_PLUS_EXPR are simple also.
	(derive_constant_upper_bound): Handle POINTER_PLUS_EXPR just
	like PLUS_EXPR and MINUS_EXPR.
	* tree-data-ref.c (analyze_offset_expr): Likewise.
	(address_analysis): Handle POINTER_PLUS_EXPR as PLUS_EXPR.
	(analyze_offset): Handle POINTER_PLUS_EXPR also.
	(create_data_ref): Convert the increment
	using chrec_convert_rhs instead of chrec_convert.
	* tree-vect-transform.c (vect_update_ivs_after_vectorizer):
	For pointer types, create POINTER_PLUS_EXPR instead of
	PLUS_EXPR and also create MULT_EXPR in sizetype.

2007-05-07  Andrew Pinski  <andrew_pinski@playstation.sony.com>

	* builtins.c (std_gimplify_va_arg_expr): Use fold_build2 for
	the creating of POINTER_PLUS_EXPR.  For the BIT_AND_EXPR, cast
	the operands to sizetype first and then cast the BIT_AND_EXPR
	back to the pointer type.
	* tree-ssa-address.c (create_mem_ref): Create A
	POINTER_PLUS_EXPR for one case.
	* tree.c (const_hash_1): Handle POINTER_PLUS_EXPR same as
	PLUS_EXPR.
	(compare_constant): Likewise.
	(copy_constant): Likewise.
	(compute_reloc_for_constant): Likewise.
	(output_addressed_constants): Likewise.

2007-05-07  Andrew Pinski  <andrew_pinski@playstation.sony.com>

	* tree.def (POINTER_PLUS_EXPR): The second operand
	is of type sizetype and not ssizetype.
	* doc/c-tree.texi (POINTER_PLUS_EXPR): Document.

2007-05-06  Andrew Pinski  <andrew_pinski@playstation.sony.com>

	* tree-mudflap.c (mf_xform_derefs_1 <case BIT_FIELD_REF>):
	Add a conversion of ofs to sizetype.
	(mf_decl_eligible_p): Reformat for length issues.
	(mf_xform_derefs_1): Likewise.

2007-05-06  Andrew Pinski  <andrew_pinski@playstation.sony.com>

	* tree.c (build2_stat): Check to make sure the
	second operand is compatiable with sizetype.

2007-05-06  Andrew Pinski  <andrew_pinski@playstation.sony.com>

	* tree-cfg.c (verify_expr): Change error
	message about sizetype to be correct.

2007-05-06  Andrew Pinski  <andrew_pinski@playstation.sony.com>

	Merge mainline, revision 124478.
	* fold-const.c (fold_unary): Handle for (T1)(X op Y),
	only p+ as that is the only as that can be handled for
	binary operators now.  Add a TODO for non pointer type
	op's.
	* gimplifier.c (gimplify_expr): Don't special case
	PLUS_EXPR.  Special case POINTER_PLUS_EXPR instead,
	remove check for pointer type as it will always be
	a pointer type now.

2007-05-04  Andrew Pinski  <andrew_pinski@playstation.sony.com>

	* tree-vrp.c (extract_range_from_binary_expr): Handle
	POINTER_PLUS_EXPRs.  Assert POINTER_PLUS_EXPR is
	the only expression for pointer types.
	* tree-vect-transform.c (vect_gen_niters_for_prolog_loop):
	Add a cast when creating byte_misalign.

2007-05-04  Andrew Pinski  <andrew_pinski@playstation.sony.com>

	* fold-const.c (fold_binary <case POINTER_PLUS_EXPR>);
	Add comment on why you get INT +p INT.
	(fold_binary <case PLUS_EXPR>): Add folding of PTR+INT into
	PTR p+ INT.
	* dwarf2out.c (loc_descriptor_from_tree_1):
	Handle POINT_PLUS_EXPR as a PLUS_EXPR.

2007-05-04  Andrew Pinski  <andrew_pinski@playstation.sony.com>

	* tree-vrp.c  (compare_values_warnv): Convert val2 to
	the type of val1.
	* fold-const.c (extract_array_ref): Look for
	POINTER_PLUS_EXPR instead of PLUS_EXPR's.
	* tree-ssa-ccp.c (maybe_fold_stmt_indirect): Likewise.

2007-05-02  Andrew Pinski  <andrew_pinski@playstation.sony.com>

	* c-format.c (check_format_arg): Handle POINTER_PLUS_EXPR
	instead of PLUS_EXPR of pointer types.

2007-05-02  Andrew Pinski  <andrew_pinski@playstation.sony.com>

	* fold-const.c (try_move_mult_to_index): Remove code argument
	and replace all uses with PLUS_EXPR.
	(fold_binary <case POINTER_PLUS_EXR>): Remove code argument.
	(fold_binary <case PLUS_EXPR>): Don't call try_move_mult_to_index.
	(fold_binary <case MINUS_EXPR>): Likewise.
	* tree-ssa-ccp.c (maybe_fold_stmt_indirect): Remove subtraction
	case as it is always addition now.
	(fold_stmt_r): Don't handle PLUS_EXPR/MINUS_EXPR specially.
	Handle POINTER_PLUS_EXPR like PLUS_EXPR was handled before.

2007-05-01  Andrew Pinski  <andrew_pinski@playstation.sony.com>

	Merge mainline, revision 124343.
	* tree-vect-transform.c (bump_vector_ptr): Create a POINTER_PLUS_EXPR
	instead of PLUS_EXPR for the pointer increment statement.
	* expr.c (expand_expr_real_1): Add FIXME/assert for the unhandle case
	where the modes of the two operands are different.

2007-02-25  Andrew Pinski  <andrew_pinski@playstation.sony.com>

	Merge mainline, revision 122323.

2006-12-14  Zdenek Dvorak <dvorakz@suse.cz>

	Merge mainline, revision 119860.

2006-11-23  Andrew Pinski  <andrew_pinski@playstation.sony.com>

	* tree.def (POINTER_PLUS_EXPR): New tree code.
	* tree-pretty-print.c (dump_generic_node): Handle
	POINTER_PLUS_EXPR.
	(op_prio): Likewise.
	(op_symbol_1): Likewise.
	* optabs.c (optab_for_tree_code): Likewise.
	* tree-ssa-loop-manip.c (create_iv): Handle pointer base
	specially.
	* tree-tailcall.c (process_assignment): Mention
	POINTER_PLUS_EXPR in a TODO comment.
	* tree.c (build2_stat): Assert when trying to use PLUS_EXPR or 
	MINUS_EXPR with a pointer. Also assert for POINTER_PLUS_EXPR
	not used with a pointer and an integer type.
	*  tree-scalar-evolution.c (fold_used_pointer): Mention
	POINTER_PLUS_EXPR is what this needs to handle.
	* builtins.c (get_pointer_alignment): Handle POINTER_PLUS_EXPR
	instead of PLUS_EXPR.
	(expand_builtin_strcat): Create a POINTER_PLUS_EXPR instead of
	PLUS_EXPR for pointers.
	(std_gimplify_va_arg_expr): Likewise.
	(fold_builtin_memory_op): Likewise.
	(fold_builtin_strstr): Likewise.
	(fold_builtin_strchr): Likewise.
	(fold_builtin_strrchr): Likewise.
	(fold_builtin_strpbrk): Likewise.
	(expand_builtin_memory_chk): Likewise.
	(fold_builtin_memory_chk): Likewise.
	* fold-const.c (build_range_check): Handle pointer types
	specially.
	(fold_to_nonsharp_ineq_using_bound): Likewise.
	(fold_binary): Handle simple POINTER_PLUS_EXPR cases.
	(tree_expr_nonnegative_p): Handle POINTER_PLUS_EXPR.
	(tree_expr_nonzero_p): Likewise.
	(fold_indirect_ref_1): Look at POINTER_PLUS_EXPR instead
	of PLUS_EXPR for the complex expression folding.
	* tree-ssa-loop-ivopts.c (determine_base_object): Handle
	POINTER_PLUS_EXPR.
	(tree_to_aff_combination): Likewise.
	(force_expr_to_var_cost): Likewise.
	(force_expr_to_var_cost): Likewise. Create a POINTER_PLUS_EXPR
	instead of PLUS_EXPR for pointers.
	* c-format.c (check_format_arg): Mention this should be handling
	POINTER_PLUS_EXPR.
	* tree-stdarg.c (va_list_counter_bump): Handle POINTER_PLUS_EXPR
	instead of PLUS_EXPR.
	(check_va_list_escapes): Likewise.
	(check_all_va_list_escapes): Likewise.
	* expr.c (expand_expr_real_1): Handle POINTER_PLUS_EXPR.
	(string_constant): Likewise.
	* tree-ssa-address.c (add_to_parts): Create a POINTER_PLUS_EXPR
	instead of PLUS_EXPR for pointers.
	(most_expensive_mult_to_index): Likewise.
	(addr_to_parts): Use the correct type for the index.
	* c-typeck.c (build_unary_op): For pointers create the increment
	as a sizetype. Create a POINTER_PLUS_EXPR instead of PLUS_EXPR
	for pointers.
	* gimplify.c (gimplify_self_mod_expr): Create a
	POINTER_PLUS_EXPR instead of PLUS_EXPR for pointers.
	(gimplify_omp_atomic_fetch_op): Handle POINTER_PLUS_EXPR.
	* tree-mudflap.c (mf_xform_derefs_1): Create a
	POINTER_PLUS_EXPR instead of PLUS_EXPR for pointers.
	* tree-ssa-forwprop.c (forward_propagate_addr_expr_1): Add a
	note this should be handling POINTER_PLUS_EXPR.
	* varasm.c (initializer_constant_valid_p): Handle
	POINTER_PLUS_EXPR.
	* tree-ssa-loop-prefetch.c (idx_analyze_ref):  Handle
	POINTER_PLUS_EXPR instead of PLUS_EXPR.
	(issue_prefetch_ref): Create a POINTER_PLUS_EXPR instead
	of PLUS_EXPR for pointers.
	* tree-vect-transform.c (vect_create_addr_base_for_vector_ref):
	Likewise.
	* tree-inline.c (estimate_num_insns_1): Handle
	POINTER_PLUS_EXPR.
	* tree-object-size.c (plus_expr_object_size): Handle
	POINTER_PLUS_EXPR instead of PLUS_EXPR.  Removing all the extra
	code which is trying to figure out which side is a pointer and 
	is the index.
	(check_for_plus_in_loops_1): Likewise.
	(check_for_plus_in_loops): Likewise.
	* c-common.c (pointer_int_sum): Create a
	POINTER_PLUS_EXPR instead of PLUS_EXPR for pointers.
	* tree-ssa-structalias.c (handle_ptr_arith): Handle
	only POINTER_PLUS_EXPR.  Removing all the extra
	code which is trying to figure out which side is a pointer and 
	is the index.
	* tree-cfg.c (verify_expr): Add extra checking for pointers and
	PLUS_EXPR and MINUS_EXPR.
	Also add checking to make sure the operands of POINTER_PLUS_EXPR
	are correct.