* loop-iv.c: Include df.h and hashtab.h.

	(enum iv_grd_result): New enum.
	(DF_REF_IV, DF_REF_IV_SET): New macros.
	(struct biv_entry): New.
	(df, bivs): New global variables.
	(struct insn_info, insn_info, last_def, bivs, max_insn_no, max_reg_no,
	assign_luids, mark_sets, kill_sets, mark_single_set, simple_set_p):
	Removed.
	(clear_iv_info, latch_dominating_def, record_iv, iv_analyze_expr,
	iv_analyze_result, iv_analyze_def, biv_hash, biv_eq,
	analyzed_for_bivness_p, record_biv): New functions.
	(iv_analysis_loop_init, iv_get_reaching_def, simple_reg_p,
	get_biv_step_1, get_biv_step, iv_analyze_biv, iv_analyze_op,
	iv_analyze, biv_p, iv_analysis_done): Work with df representation of
	UD chains.
	(iv_constant, iv_subreg, iv_extend, iv_mult, iv_shift): Do not set
	analysed.
	(iv_number_of_iterations): Use new interface to iv analysis.
	* loop-unroll.c: Do not include varray.h.
	(analyze_iv_to_split_insn): Use new interface to iv
	analysis.
	* loop-unswitch.c (may_unswitch_on): Ditto.
	* df.c (df_bitmaps_free): Only work for bbs for that structures are
	allocated.
	(df_bb_modify): Realloc tables to the new index.
	(df_find_use): New function.
	* df.h (df_find_use): Declare.
	* optabs.c (expand_unop): Make the mode of the REG_EQUAL node be
	outmode.
	* cfgloop.h (struct rtx_iv): Remove analysed field.
	(iv_get_reaching_def): Removed.
	(iv_analyze_result, iv_analyze_expr, iv_current_loop_df): Declare.
	* Makefile.in (loop-unroll.o): Remove VARRAY_H dependency.
	(loop-iv.o): Add df.h and hashtab.h dependency.
	* df-problems.c (df_ru_alloc, df_rd_alloc): Fix memory reallocation.



git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@110005 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 6 insertions, 6 deletions

diff --git a/gcc/df-problems.c b/gcc/df-problems.c
index c17e048edad..2a7ec0d0ed9 100644
--- a/gcc/df-problems.c
+++ b/gcc/df-problems.c
@@ -369,12 +369,12 @@ df_ru_alloc (struct dataflow *dflow, bitmap blocks_to_rescan)
 	    }
 	}
       
-      if (problem_data->use_sites_size > reg_size)
+      if (problem_data->use_sites_size < reg_size)
 	{
 	  problem_data->use_sites 
-	    = xrealloc (problem_data->use_sites, reg_size *sizeof (bitmap));
-	  memset (problem_data->use_sites, 0,
-		  (reg_size - problem_data->use_sites_size) *sizeof (bitmap));
+	    = xrealloc (problem_data->use_sites, reg_size * sizeof (bitmap));
+	  memset (problem_data->use_sites + problem_data->use_sites_size, 0,
+		  (reg_size - problem_data->use_sites_size) * sizeof (bitmap));
 	  problem_data->use_sites_size = reg_size;
 	}
 
@@ -876,11 +876,11 @@ df_rd_alloc (struct dataflow *dflow, bitmap blocks_to_rescan)
 	    }
 	}
       
-      if (problem_data->def_sites_size > reg_size)
+      if (problem_data->def_sites_size < reg_size)
 	{
 	  problem_data->def_sites 
 	    = xrealloc (problem_data->def_sites, reg_size *sizeof (bitmap));
-	  memset (problem_data->def_sites, 0,
+	  memset (problem_data->def_sites + problem_data->def_sites_size, 0,
 		  (reg_size - problem_data->def_sites_size) *sizeof (bitmap));
 	  problem_data->def_sites_size = reg_size;
 	}