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| author | Richard Biener <rguenther@suse.de> | 2014-01-17 10:47:59 +0000 |
|---|---|---|
| committer | Richard Biener <rguenth@gcc.gnu.org> | 2014-01-17 10:47:59 +0000 |
| commit | 7be64667c127a0cdb9dc7e4f02dcd7720589919d (patch) | |
| tree | 87501164890f5046ea55327b6647afe5ac2c9e28 /gcc/loop-iv.c | |
| parent | cc3a9f0d477d52982b504c954da0d87d48e6c1f7 (diff) | |
| download | gcc-7be64667c127a0cdb9dc7e4f02dcd7720589919d.zip gcc-7be64667c127a0cdb9dc7e4f02dcd7720589919d.tar.gz gcc-7be64667c127a0cdb9dc7e4f02dcd7720589919d.tar.bz2 | |
re PR rtl-optimization/38518 (Excessive compile time with -O3)
2014-01-17 Richard Biener <rguenther@suse.de>
PR rtl-optimization/38518
* df.h (df_analyze_loop): Declare.
* df-core.c: Include cfgloop.h.
(df_analyze_1): Split out main part of df_analyze.
(df_analyze): Adjust.
(loop_inverted_post_order_compute): New function.
(loop_post_order_compute): Likewise.
(df_analyze_loop): New function avoiding whole-function
postorder computes.
* loop-invariant.c (find_defs): Use df_analyze_loop.
(find_invariants): Adjust.
* loop-iv.c (iv_analysis_loop_init): Use df_analyze_loop.
From-SVN: r206702
Diffstat (limited to 'gcc/loop-iv.c')
| -rw-r--r-- | gcc/loop-iv.c | 14 |
1 files changed, 1 insertions, 13 deletions
diff --git a/gcc/loop-iv.c b/gcc/loop-iv.c index d03cc40..9091220 100644 --- a/gcc/loop-iv.c +++ b/gcc/loop-iv.c @@ -278,10 +278,6 @@ clear_iv_info (void) void iv_analysis_loop_init (struct loop *loop) { - basic_block *body = get_loop_body_in_dom_order (loop), bb; - bitmap blocks = BITMAP_ALLOC (NULL); - unsigned i; - current_loop = loop; /* Clear the information from the analysis of the previous loop. */ @@ -294,11 +290,6 @@ iv_analysis_loop_init (struct loop *loop) else clear_iv_info (); - for (i = 0; i < loop->num_nodes; i++) - { - bb = body[i]; - bitmap_set_bit (blocks, bb->index); - } /* Get rid of the ud chains before processing the rescans. Then add the problem back. */ df_remove_problem (df_chain); @@ -306,14 +297,11 @@ iv_analysis_loop_init (struct loop *loop) df_set_flags (DF_RD_PRUNE_DEAD_DEFS); df_chain_add_problem (DF_UD_CHAIN); df_note_add_problem (); - df_set_blocks (blocks); - df_analyze (); + df_analyze_loop (loop); if (dump_file) df_dump_region (dump_file); check_iv_ref_table_size (); - BITMAP_FREE (blocks); - free (body); } /* Finds the definition of REG that dominates loop latch and stores |