diff options
| author | rguenth <rguenth@138bc75d-0d04-0410-961f-82ee72b054a4> | 2009-04-21 09:58:38 +0000 |
|---|---|---|
| committer | rguenth <rguenth@138bc75d-0d04-0410-961f-82ee72b054a4> | 2009-04-21 09:58:38 +0000 |
| commit | 80a26b8bdf415b234e3473f14741e11f3153c36c (patch) | |
| tree | cbdfe606ec1263a4ac53cb6b346f189d4825f041 /gcc/tree-ssa-phiprop.c | |
| parent | 8734914d0ac18069cb2341a8c1a98dad6c10b323 (diff) | |
| download | gcc-80a26b8bdf415b234e3473f14741e11f3153c36c.tar.gz | |
2009-04-21 Richard Guenther <rguenther@suse.de>
PR tree-optimization/39827
* tree-ssa-phiprop.c (propagate_with_phi): Check SSA_NAME
is in range.
(tree_ssa_phiprop): Pass the correct array size.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@146515 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/tree-ssa-phiprop.c')
| -rw-r--r-- | gcc/tree-ssa-phiprop.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/gcc/tree-ssa-phiprop.c b/gcc/tree-ssa-phiprop.c index f608f1d056e..4e6e09c477d 100644 --- a/gcc/tree-ssa-phiprop.c +++ b/gcc/tree-ssa-phiprop.c @@ -253,6 +253,7 @@ propagate_with_phi (basic_block bb, gimple phi, struct phiprop_d *phivn, /* Avoid to have to decay *&a to a[0] later. */ || !is_gimple_reg_type (TREE_TYPE (TREE_OPERAND (arg, 0)))) && !(TREE_CODE (arg) == SSA_NAME + && SSA_NAME_VERSION (arg) < n && phivn[SSA_NAME_VERSION (arg)].value != NULL_TREE && phivn_valid_p (phivn, arg, bb))) return false; @@ -336,18 +337,19 @@ tree_ssa_phiprop (void) basic_block bb; gimple_stmt_iterator gsi; unsigned i; + size_t n; calculate_dominance_info (CDI_DOMINATORS); - phivn = XCNEWVEC (struct phiprop_d, num_ssa_names); + n = num_ssa_names; + phivn = XCNEWVEC (struct phiprop_d, n); /* Walk the dominator tree in preorder. */ bbs = get_all_dominated_blocks (CDI_DOMINATORS, single_succ (ENTRY_BLOCK_PTR)); for (i = 0; VEC_iterate (basic_block, bbs, i, bb); ++i) for (gsi = gsi_start_phis (bb); !gsi_end_p (gsi); gsi_next (&gsi)) - did_something |= propagate_with_phi (bb, gsi_stmt (gsi), - phivn, num_ssa_names); + did_something |= propagate_with_phi (bb, gsi_stmt (gsi), phivn, n); if (did_something) gsi_commit_edge_inserts (); |