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Use mark_block_for_update properly in insert_updated_phi_nodes_for 

This makes sure to use mark_block_for_update when adding a block for
rewriting in insert_updated_phi_nodes_for as otherwise stmt flags are not
initialized.

2022-06-28  Richard Biener  <rguenther@suse.de>

	* tree-into-ssa.cc (insert_updated_phi_nodes_for): Use
	mark_block_for_update.
	(update_ssa): Adjust.
This commit is contained in:
Richard Biener 2022-06-28 12:03:22 +02:00
parent 198781144f
commit 07f49e855b
1 changed files with 7 additions and 9 deletions
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16
gcc/tree-into-ssa.cc
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@ -3109,7 +3109,7 @@ release_ssa_name_after_update_ssa (tree name)
/* Insert new PHI nodes to replace VAR. DFS contains dominance
frontier information. BLOCKS is the set of blocks to be updated.
frontier information.
This is slightly different than the regular PHI insertion
algorithm. The value of UPDATE_FLAGS controls how PHI nodes for
@ -3132,8 +3132,8 @@ release_ssa_name_after_update_ssa (tree name)
names is not pruned. PHI nodes are inserted at every IDF block. */
static void
insert_updated_phi_nodes_for (tree var, bitmap_head *dfs, bitmap blocks,
unsigned update_flags)
insert_updated_phi_nodes_for (tree var, bitmap_head *dfs,
unsigned update_flags)
{
basic_block entry;
def_blocks *db;
@ -3197,16 +3197,16 @@ insert_updated_phi_nodes_for (tree var, bitmap_head *dfs, bitmap blocks,
/* FIXME, this is not needed if we are updating symbols. We are
already starting at the ENTRY block anyway. */
bitmap_ior_into (blocks, pruned_idf);
EXECUTE_IF_SET_IN_BITMAP (pruned_idf, 0, i, bi)
{
edge e;
edge_iterator ei;
basic_block bb = BASIC_BLOCK_FOR_FN (cfun, i);
mark_block_for_update (bb);
FOR_EACH_EDGE (e, ei, bb->preds)
if (e->src->index >= 0)
bitmap_set_bit (blocks, e->src->index);
mark_block_for_update (e->src);
}
insert_phi_nodes_for (var, pruned_idf, true);
@ -3475,14 +3475,12 @@ update_ssa (unsigned update_flags)
auto_sbitmap tmp (SBITMAP_SIZE (old_ssa_names));
bitmap_copy (tmp, old_ssa_names);
EXECUTE_IF_SET_IN_BITMAP (tmp, 0, i, sbi)
insert_updated_phi_nodes_for (ssa_name (i), dfs, blocks_to_update,
update_flags);
insert_updated_phi_nodes_for (ssa_name (i), dfs, update_flags);
}
symbols_to_rename.qsort (insert_updated_phi_nodes_compare_uids);
FOR_EACH_VEC_ELT (symbols_to_rename, i, sym)
insert_updated_phi_nodes_for (sym, dfs, blocks_to_update,
update_flags);
insert_updated_phi_nodes_for (sym, dfs, update_flags);
FOR_EACH_BB_FN (bb, cfun)
bitmap_clear (&dfs[bb->index]);