extend.texi (Named Address Spaces): New section.

2009-10-26  Ben Elliston  <bje@au.ibm.com>
	    Michael Meissner  <meissner@linux.vnet.ibm.com>
	    Ulrich Weigand  <uweigand@de.ibm.com>

	* doc/extend.texi (Named Address Spaces): New section.
	* coretypes.h (addr_space_t): New type.
	(ADDR_SPACE_GENERIC): New define.
	(ADDR_SPACE_GENERIC_P): New macro.

	* doc/tm.texi (Named Address Spaces): New section.
	(TARGET_ADDR_SPACE_LEGITIMATE_ADDRESS_P): Document.
	(TARGET_ADDR_SPACE_LEGITIMIZE_ADDRESS): Document.
	(TARGET_ADDR_SPACE_SUBSET_P): Document.
	(TARGET_ADDR_SPACE_CONVERT): Document.
	* target.h (struct gcc_target): Add addr_space substructure.
	* target-def.h (TARGET_ADDR_SPACE_LEGITIMATE_ADDRESS_P): Define.
	(TARGET_ADDR_SPACE_LEGITIMIZE_ADDRESS): Likewise.
	(TARGET_ADDR_SPACE_SUBSET_P): Likewise.
	(TARGET_ADDR_SPACE_CONVERT): Likewise.
	(TARGET_ADDR_SPACE_HOOKS): Likewise.
	(TARGET_INITIALIZER): Initialize addr_space hooks.
	* targhooks.c (default_addr_space_legitimate_address_p): New function.
	(default_addr_space_legitimize_address): Likewise.
	(default_addr_space_subset_p): Likewise.
	(default_addr_space_convert): Likewise.
	* targhooks.h (default_addr_space_legitimate_address_p): Add prototype.
	(default_addr_space_legitimize_address): Likewise.
	(default_addr_space_subset_p): Likewise.
	(default_addr_space_convert): Likewise.

	* doc/rtl.texi (MEM_ADDR_SPACE): Document.
	* rtl.h (mem_attrs): Add ADDRSPACE memory attribute.
	(MEM_ADDR_SPACE): New macro.
	* emit-rtl.c (get_mem_attrs): Add ADDRSPACE argument and set
	address space memory attribute.
	(mem_attrs_htab_hash): Handle address space memory attribute.
	(mem_attrs_htab_eq): Likewise.
	(set_mem_attributes_minus_bitpos): Likewise.
	(set_mem_alias_set): Likewise.
	(set_mem_align): Likewise.
	(set_mem_expr): Likewise.
	(set_mem_offset): Likewise.
	(set_mem_size): Likewise.
	(adjust_address_1): Likewise.
	(offset_address): Likewise.
	(widen_memoy_address): Likewise.
	(get_spill_slot_decl): Likewise.
	(set_mem_attrs_for_spill): Likewise.
	(set_mem_addr_space): New function.
	* emit-rtl.h (set_mem_addr_space): Add prototype.
	* print-rtl.c (print_rtx): Print address space memory attribute.
	* expr.c (expand_assignment): Set address space memory attribute
	of generated MEM RTXes as appropriate.
	(expand_expr_real_1): Likewise.
	* cfgexpand.c (expand_debug_expr): Likewise.
	* tree-ssa-loop-ivopts.c (produce_memory_decl_rtl): Likewise.

	* tree.h (struct tree_base): Add address_space bitfield.  Reduce
	size of "spare" bitfield.
	(TYPE_ADDR_SPACE): New macro.
	(ENCODE_QUAL_ADDR_SPACE): Likewise.
	(DECODE_QUAL_ADDR_SPACE): Likewise.
	(CLEAR_QUAL_ADDR_SPACE): Likewise.
	(KEEP_QUAL_ADDR_SPACE): Likewise.
	(TYPE_QUALS): Encode type address space.
	(TYPE_QUALS_NO_ADDR_SPACE): New macro.
	* tree.c (set_type_quals): Set type address space.
	(build_array_type): Inherit array address space from element type.
	* print-tree.c (print_node_brief): Print type address space.
	(print_node): Likewise.
	* tree-pretty-print.c (dump_generic_node): Likewise.

	* explow.c (memory_address): Rename to ...
	(memory_address_addr_space): ... this.  Add ADDRSPACE argument.
	Use address-space aware variants of memory address routines.
	* recog.c (memory_address_p): Rename to ...
	(memory_address_addr_space_p): ... this.  Add ADDSPACE argument.
	Use address-space aware variants of memory address routines.
	(offsettable_address_p): Rename to ...
	(offsettable_address_addr_space_p): ... this.  Add ADDRSPACE argument.
	Use address-space aware variants of memory address routines.
	* reload.c (strict_memory_address_p): Rename to ...
	(strict_memory_address_addr_space_p): ... this.  Add ADDSPACE argument.
	Use address-space aware variants of memory address routines.
	(maybe_memory_address_p): Rename to ...
	(maybe_memory_address_addr_space_p): ... this.  Add ADDSPACE argument.
	Use address-space aware variants of memory address routines.
	* expr.h (memory_address_addr_space): Add prototype.
	(memory_address): Define as macro.
	* recog.h (memory_address_addr_space_p): Add prototype.
	(memory_address_p): Define as macro.
	(offsettable_address_addr_space_p): Add prototype.
	(offsettable_address_p): Define as macro.
	(strict_memory_address_addr_space_p): Add prototype.
	(strict_memory_address_p): Define as macro.

	* combine.c (find_split_point): Use address-space aware variants
	of memory address routines.
	* emit-rtl.c (operand_subword): Likewise.
	(change_address_1): Likewise.
	(adjust_address_1): Likewise.
	(offset_address): Likewise.
	* expr.c (emit_move_insn): Likewise.
	(expand_assignment): Likewise.
	(expand_expr_real_1): Likewise.
	* recog.c (verify_changes): Likewise.
	(general_operand): Likewise.
	(offsettable_memref_p): Likewise.
	(offsettable_nonstrict_memref_p): Likewise.
	(constrain_operands): Likewise.
	* reload.c (get_secondary_mem): Likewise.
	(find_reloads_toplev): Likewise.
	(find_reloads_address): Likewise.
	(find_reloads_subreg_address): Likewise.
	* reload1.c (reload): Likewise.
	* rtlhooks.c (gen_lowpart_if_possible): Likewise.
	* rtl.h (address_cost): Add ADDRSPACE argument.
	* rtlanal.c (address_cost): Add ADDRSPACE argument.  Use address-space
	aware variant of memory address routines.
	* loop-invariant.c (create_new_invariant): Update address_cost call.
	* tree-ssa-loop-ivopts.c (computation_cost): Likewise.
	* fwprop.c (should_replace_address): Add ADDRSPACE argument.
	Use address-space aware variant of memory address routines.
	(propagate_rtx_1): Update call to should_replace_address.
	* tree-flow.h (multiplier_allowed_in_address_p): Add ADDRSPACE
	argument.
	* tree-ssa-loop-ivopts.c (multiplier_allowed_in_address_p): Add
	ADDRSPACE argument.  Use per-address-space instead of global cache.
	Use address-space aware variant of memory address routines.
	(get_address_cost): Likewise.
	(get_computation_cost_at): Update calls.
	* tree-ssa-address.c (valid_mem_ref_p): Add ADDRSPACE argument.
	Use address-space aware variant of memory address routines.
	(create_mem_ref_raw): Update call to valid_mem_ref_p.
	(most_expensive_mult_to_index): Update call to
	multiplier_allowed_in_address_p.

	* dwarf2out.c (modified_type_die): Output DW_AT_address_class
	attribute to indicate named address spaces.

	* varasm.c (get_variable_section): DECLs in named address spaces
	cannot be "common".

	* reload.c (find_reloads_address): Do not use LEGITIMIZE_RELOAD_ADDRESS
	for addresses in a non-generic address space.

	* expr.c (emit_block_move_hints): Do not use libcalls for
	memory in non-generic address spaces.
	(clear_storage_hints): Likewise.
	(expand_assignment): Likewise.

	* fold-const.c (operand_equal_p): Expressions refering to different
	address spaces are not equivalent.

	* rtl.c (rtx_equal_p_cb): MEMs refering to different address
	spaces are not equivalent.
	(rtx_equal_p): Likewise.
	* cse.c (exp_equiv_p): Likewise.
	* jump.c (rtx_renumbered_equal_p): Likewise.
	* reload.c (operands_match_p): Likewise.

	* alias.c (nonoverlapping_memrefs_p): MEMs refering to different
	address spaces may alias.
	(true_dependence): Likewise.
	(canon_true_dependence): Likewise.
	(write_dependence_p): Likewise.

	* dse.c (canon_address): Handle named address spaces.
	* ifcvt.c (noce_try_cmove_arith): Likewise.

	* tree.def (ADDR_SPACE_CONVERT_EXPR): New tree code.
	* expr.c (expand_expr_real_2): Expand ADDR_SPACE_CONVERT_EXPR.
	* convert.c (convert_to_pointer): Generate ADDR_SPACE_CONVERT_EXPR
	to handle conversions between different address spaces.
	* fold-const.c (fold_convert_loc): Likewise.
	(fold_unary_loc): Handle ADDR_SPACE_CONVERT_EXPR.
	* tree-pretty-print.c (dump_generic_node): Likewise.
	* gimple-pretty-print.c (dump_unary_rhs): Likewise.
	* tree-cfg.c (verify_gimple_assign_unary): Likewise.
	* tree-inline.c (estimate_operator_cost): Likewise.
	* tree-ssa.c (useless_type_conversion_p): Conversions between pointers
	to different address spaces are not useless.

Co-Authored-By: Michael Meissner <meissner@linux.vnet.ibm.com>
Co-Authored-By: Ulrich Weigand <uweigand@de.ibm.com>

From-SVN: r153572

1 files changed, 14 insertions, 13 deletions

diff --git a/gcc/explow.c b/gcc/explow.c
index 3073ff0..1115f22 100644
--- a/gcc/explow.c
+++ b/gcc/explow.c
@@ -405,12 +405,12 @@ convert_memory_address (enum machine_mode to_mode ATTRIBUTE_UNUSED,
 #endif /* defined(POINTERS_EXTEND_UNSIGNED) */
 }
 
-/* Return something equivalent to X but valid as a memory address
-   for something of mode MODE.  When X is not itself valid, this
-   works by copying X or subexpressions of it into registers.  */
+/* Return something equivalent to X but valid as a memory address for something
+   of mode MODE in the named address space AS.  When X is not itself valid,
+   this works by copying X or subexpressions of it into registers.  */
 
 rtx
-memory_address (enum machine_mode mode, rtx x)
+memory_address_addr_space (enum machine_mode mode, rtx x, addr_space_t as)
 {
   rtx oldx = x;
 
@@ -431,12 +431,12 @@ memory_address (enum machine_mode mode, rtx x)
 	x = break_out_memory_refs (x);
 
       /* At this point, any valid address is accepted.  */
-      if (memory_address_p (mode, x))
+      if (memory_address_addr_space_p (mode, x, as))
 	goto done;
 
       /* If it was valid before but breaking out memory refs invalidated it,
 	 use it the old way.  */
-      if (memory_address_p (mode, oldx))
+      if (memory_address_addr_space_p (mode, oldx, as))
 	{
 	  x = oldx;
 	  goto done;
@@ -447,9 +447,9 @@ memory_address (enum machine_mode mode, rtx x)
 	 below can handle all possible cases, but machine-dependent
 	 transformations can make better code.  */
       {
-        rtx orig_x = x;
-        x = targetm.legitimize_address (x, oldx, mode);
-	if (orig_x != x && memory_address_p (mode, x))
+	rtx orig_x = x;
+	x = targetm.addr_space.legitimize_address (x, oldx, mode, as);
+	if (orig_x != x && memory_address_addr_space_p (mode, x, as))
 	  goto done;
       }
 
@@ -467,12 +467,12 @@ memory_address (enum machine_mode mode, rtx x)
 	  rtx constant_term = const0_rtx;
 	  rtx y = eliminate_constant_term (x, &constant_term);
 	  if (constant_term == const0_rtx
-	      || ! memory_address_p (mode, y))
+	      || ! memory_address_addr_space_p (mode, y, as))
 	    x = force_operand (x, NULL_RTX);
 	  else
 	    {
 	      y = gen_rtx_PLUS (GET_MODE (x), copy_to_reg (y), constant_term);
-	      if (! memory_address_p (mode, y))
+	      if (! memory_address_addr_space_p (mode, y, as))
 		x = force_operand (x, NULL_RTX);
 	      else
 		x = y;
@@ -495,7 +495,7 @@ memory_address (enum machine_mode mode, rtx x)
 
  done:
 
-  gcc_assert (memory_address_p (mode, x));
+  gcc_assert (memory_address_addr_space_p (mode, x, as));
   /* If we didn't change the address, we are done.  Otherwise, mark
      a reg as a pointer if we have REG or REG + CONST_INT.  */
   if (oldx == x)
@@ -523,7 +523,8 @@ validize_mem (rtx ref)
   if (!MEM_P (ref))
     return ref;
   ref = use_anchored_address (ref);
-  if (memory_address_p (GET_MODE (ref), XEXP (ref, 0)))
+  if (memory_address_addr_space_p (GET_MODE (ref), XEXP (ref, 0),
+				   MEM_ADDR_SPACE (ref)))
     return ref;
 
   /* Don't alter REF itself, since that is probably a stack slot.  */