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re PR middle-end/39827 (ICE (segfault) when compiling gcc/varasm.c (in notice_global_symbol)) 

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.

From-SVN: r146515
This commit is contained in:
Richard Guenther 2009-04-21 09:58:38 +00:00 committed by Richard Biener
parent 47f402d18f
commit 2970ccb3bb
2 changed files with 12 additions and 3 deletions
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7
gcc/ChangeLog
View File

@ -1,3 +1,10 @@
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.
2009-04-21 Uros Bizjak <ubizjak@gmail.com>
* config/alpha/alpha.md (tune): Add cast to enum attr_tune.

8
gcc/tree-ssa-phiprop.c
View File

@ -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 ();