gcc/

	* df.h (df_mw_hardreg, df_base_ref): Add a link pointer.
	(df_insn_info): Turn defs, uses, eq_uses and mw_hardregs into linked
	lists.
	(df_scan_bb_info): Likewise artificial_defs and artificial_uses.
	(DF_REF_NEXT_LOC, DF_MWS_NEXT): New macros.
	(FOR_EACH_INSN_INFO_DEF, FOR_EACH_INSN_INFO_USE)
	(FOR_EACH_INSN_INFO_EQ_USE, FOR_EACH_INSN_INFO_MW)
	(FOR_EACH_ARTIFICIAL_USE, FOR_EACH_ARTIFICIAL_DEF)
	(df_get_artificial_defs, df_get_artificial_uses)
	(df_single_def, df_single_use): Update accordingly.
	(df_refs_chain_dump): Take the first element in a linked list as
	parameter, rather than a pointer to an array of pointers.
	* df-core.c (df_refs_chain_dump, df_mws_dump): Likewise.
	* df-problems.c (df_rd_bb_local_compute_process_def): Likewise.
	(df_chain_create_bb_process_use): Likewise.
	(df_md_bb_local_compute_process_def): Likewise.
	* fwprop.c (process_defs, process_uses): Likewise.
	(register_active_defs, update_uses): Likewise.
	(forward_propagate_asm): Update for new df_ref linking.
	* df-scan.c (df_scan_free_ref_vec, df_scan_free_mws_vec): Delete.
	(df_null_ref_rec, df_null_mw_rec): Likewise.
	(df_scan_free_internal): Don't free df_ref and df_mw_hardreg lists
	explicitly.
	(df_scan_free_bb_info): Remove check for null artificial_defs.
	(df_install_ref_incremental): Adjust for new df_ref linking.
	Use a single-element insertion rather than a full sort.
	(df_ref_chain_delete_du_chain): Take the first element
	in a linked list as parameter, rather than a pointer to an array of
	pointers.
	(df_ref_chain_delete, df_mw_hardreg_chain_delete): Likewise.
	(df_add_refs_to_table, df_refs_verify, df_mws_verify): Likewise.
	(df_insn_info_delete): Remove check for null defs and call to
	df_scan_free_mws_vec.
	(df_insn_rescan): Initialize df_ref and df_mw_hardreg lists to
	null rather than df_null_*_rec.
	(df_insn_rescan_debug_internal): Likewise, and update null
	checks in the same way.  Remove check for null defs.
	(df_ref_change_reg_with_loc_1): Fix choice of list for defs.
	Move a single element rather doing a full sort.
	(df_mw_hardreg_chain_delete_eq_uses): Adjust for new df_mw_hardreg
	linking.
	(df_notes_rescan): Likewise.  Use a merge rather than a full sort.
	Initialize df_ref and df_mw_hardreg lists to null rather than
	df_null_*_rec.
	(df_ref_compare): Take df_refs as parameter, transferring the
	old interface to...
	(df_ref_ptr_compare): ...this new function.
	(df_sort_and_compress_refs): Update accordingly.
	(df_mw_compare): Take df_mw_hardregs as parameter, transferring the
	old interface to...
	(df_mw_ptr_compare): ...this new function.
	(df_sort_and_compress_mws): Update accordingly.
	(df_install_refs, df_install_mws): Return a linked list rather than
	an array of pointers.
	(df_refs_add_to_chains): Assert that old lists are empty rather
	than freeing them.
	(df_insn_refs_verify): Don't handle null defs speciailly.
	* web.c (union_match_dups): Update for new df_ref linking.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@211683 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 6 insertions, 12 deletions

diff --git a/gcc/df-problems.c b/gcc/df-problems.c
index d97e2870aea..e8248659a77 100644
--- a/gcc/df-problems.c
+++ b/gcc/df-problems.c
@@ -291,12 +291,11 @@ df_rd_simulate_one_insn (basic_block bb ATTRIBUTE_UNUSED, rtx insn,
 
 static void
 df_rd_bb_local_compute_process_def (struct df_rd_bb_info *bb_info,
-				    df_ref *def_rec,
+				    df_ref def,
 				    int top_flag)
 {
-  while (*def_rec)
+  for (; def; def = DF_REF_NEXT_LOC (def))
     {
-      df_ref def = *def_rec;
       if (top_flag == (DF_REF_FLAGS (def) & DF_REF_AT_TOP))
 	{
 	  unsigned int regno = DF_REF_REGNO (def);
@@ -339,7 +338,6 @@ df_rd_bb_local_compute_process_def (struct df_rd_bb_info *bb_info,
 		}
 	    }
 	}
-      def_rec++;
     }
 }
 
@@ -2022,15 +2020,14 @@ df_chain_reset (bitmap blocks_to_clear ATTRIBUTE_UNUSED)
 
 static void
 df_chain_create_bb_process_use (bitmap local_rd,
-				df_ref *use_rec,
+				df_ref use,
 				int top_flag)
 {
   bitmap_iterator bi;
   unsigned int def_index;
 
-  while (*use_rec)
+  for (; use; use = DF_REF_NEXT_LOC (use))
     {
-      df_ref use = *use_rec;
       unsigned int uregno = DF_REF_REGNO (use);
       if ((!(df->changeable_flags & DF_NO_HARD_REGS))
 	  || (uregno >= FIRST_PSEUDO_REGISTER))
@@ -2059,8 +2056,6 @@ df_chain_create_bb_process_use (bitmap local_rd,
 		}
 	    }
 	}
-
-      use_rec++;
     }
 }
 
@@ -4077,13 +4072,12 @@ df_md_simulate_one_insn (basic_block bb ATTRIBUTE_UNUSED, rtx insn,
 
 static void
 df_md_bb_local_compute_process_def (struct df_md_bb_info *bb_info,
-                                    df_ref *def_rec,
+                                    df_ref def,
                                     int top_flag)
 {
-  df_ref def;
   bitmap_clear (&seen_in_insn);
 
-  while ((def = *def_rec++) != NULL)
+  for (; def; def = DF_REF_NEXT_LOC (def))
     {
       unsigned int dregno = DF_REF_REGNO (def);
       if (((!(df->changeable_flags & DF_NO_HARD_REGS))