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| author | Zdenek Dvorak <rakdver@atrey.karlin.mff.cuni.cz> | 2004-08-04 22:37:38 +0200 |
|---|---|---|
| committer | Jeff Law <law@gcc.gnu.org> | 2004-08-04 14:37:38 -0600 |
| commit | b0382c67cb60bf717f7ed330da1c36ca379381d8 (patch) | |
| tree | 23b173bffe56f19ee8231be3aae5255ddc05cbc8 /gcc/tree-cfg.c | |
| parent | 63c5b4952ee1141038f756fc5a44511296ad7f8e (diff) | |
| download | gcc-b0382c67cb60bf717f7ed330da1c36ca379381d8.zip gcc-b0382c67cb60bf717f7ed330da1c36ca379381d8.tar.gz gcc-b0382c67cb60bf717f7ed330da1c36ca379381d8.tar.bz2 | |
tree-cfg.c (tree_duplicate_bb): Mark duplicated definitions.
* tree-cfg.c (tree_duplicate_bb): Mark duplicated definitions.
* tree-flow.h (rewrite_ssa_into_ssa): Declaration changed.
* tree-into-ssa.c (rewrite_ssa_into_ssa): Use new interface to
manipulate the duplicated ssa names.
* tree-ssanames.c (ssa_names_to_rewrite): New variable.
(marked_for_rewrite_p, any_marked_for_rewrite_p, mark_for_rewrite,
unmark_all_for_rewrite, marked_ssa_names, release_ssa_name_force):
New functions.
(release_ssa_name): Do not release ssa names that may have multiple
definitions.
* tree.h (release_ssa_name_force, mark_for_rewrite,
unmark_all_for_rewrite, marked_for_rewrite_p, any_marked_for_rewrite_p,
marked_ssa_names): Declare.
* tree-ssa-loop-ch.c (mark_defs_for_rewrite): Remove.
(duplicate_blocks): Remove call to mark_defs_for_rewrite.
Update call to rewrite_ssa_into_ssa.
Co-Authored-By: Jeff Law <law@redhat.com>
From-SVN: r85572
Diffstat (limited to 'gcc/tree-cfg.c')
| -rw-r--r-- | gcc/tree-cfg.c | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/gcc/tree-cfg.c b/gcc/tree-cfg.c index c9d2424..5765316 100644 --- a/gcc/tree-cfg.c +++ b/gcc/tree-cfg.c @@ -4297,8 +4297,19 @@ tree_duplicate_bb (basic_block bb) { basic_block new_bb; block_stmt_iterator bsi, bsi_tgt; + tree phi; + def_optype defs; + v_may_def_optype v_may_defs; + v_must_def_optype v_must_defs; + unsigned j; new_bb = create_empty_bb (EXIT_BLOCK_PTR->prev_bb); + + for (phi = phi_nodes (bb); phi; phi = TREE_CHAIN (phi)) + { + mark_for_rewrite (PHI_RESULT (phi)); + } + bsi_tgt = bsi_start (new_bb); for (bsi = bsi_start (bb); !bsi_end_p (bsi); bsi_next (&bsi)) { @@ -4308,6 +4319,21 @@ tree_duplicate_bb (basic_block bb) if (TREE_CODE (stmt) == LABEL_EXPR) continue; + /* Record the definitions. */ + get_stmt_operands (stmt); + + defs = STMT_DEF_OPS (stmt); + for (j = 0; j < NUM_DEFS (defs); j++) + mark_for_rewrite (DEF_OP (defs, j)); + + v_may_defs = STMT_V_MAY_DEF_OPS (stmt); + for (j = 0; j < NUM_V_MAY_DEFS (v_may_defs); j++) + mark_for_rewrite (V_MAY_DEF_RESULT (v_may_defs, j)); + + v_must_defs = STMT_V_MUST_DEF_OPS (stmt); + for (j = 0; j < NUM_V_MUST_DEFS (v_must_defs); j++) + mark_for_rewrite (V_MUST_DEF_OP (v_must_defs, j)); + copy = unshare_expr (stmt); /* Copy also the virtual operands. */ |