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re PR tree-optimization/51903 (ICE: in gimple_purge_all_dead_eh_edges, at tree-cfg.c:7196 with -fnon-call-exceptions)

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2012-01-20  Richard Guenther  <rguenther@suse.de>

	PR tree-optimization/51903
	* tree-ssa-pre.c (eliminate): Properly purging of EH edges
	when removing stmts.

	* g++.dg/torture/pr51903.C: New testcase.

From-SVN: r183329
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Richard Guenther 2012-01-20 10:10:46 +00:00 • committed by Richard Biener
parent f06129ead4
commit a88b313573
4 changed files with 24 additions and 2 deletions
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6
gcc/ChangeLog
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@ -1,3 +1,9 @@
2012-01-20 Richard Guenther <rguenther@suse.de>
PR tree-optimization/51903
* tree-ssa-pre.c (eliminate): Properly purging of EH edges
when removing stmts.
2012-01-20 Ramana Radhakrishnan <ramana.radhakrishnan@linaro.org> 2012-01-20 Ramana Radhakrishnan <ramana.radhakrishnan@linaro.org>
PR target/50313 PR target/50313

5
gcc/testsuite/ChangeLog
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@ -1,3 +1,8 @@
2012-01-20 Richard Guenther <rguenther@suse.de>
PR tree-optimization/51903
* g++.dg/torture/pr51903.C: New testcase.
2012-01-20 Tobias Burnus <burnus@net-b.de> 2012-01-20 Tobias Burnus <burnus@net-b.de>
Janus Weil <janus@gcc.gnu.org> Janus Weil <janus@gcc.gnu.org>

9
gcc/testsuite/g++.dg/torture/pr51903.C Normal file
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@ -0,0 +1,9 @@
// { dg-do compile }
// { dg-options "-O2 -fnon-call-exceptions -fno-guess-branch-probability" }
#include <vector>
void foo ()
{
std::vector < std::vector< int > > (20000);
}

6
gcc/tree-ssa-pre.c
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@ -4541,8 +4541,10 @@ eliminate (void)
gsi = gsi_for_stmt (stmt); gsi = gsi_for_stmt (stmt);
unlink_stmt_vdef (stmt); unlink_stmt_vdef (stmt);
gsi_remove (&gsi, true); gsi_remove (&gsi, true);
if (gimple_purge_dead_eh_edges (bb)) /* ??? gsi_remove doesn't tell us whether the stmt was
todo |= TODO_cleanup_cfg; in EH tables and thus whether we need to purge EH edges.
Simply schedule the block for a cleanup. */
bitmap_set_bit (need_eh_cleanup, bb->index);
if (TREE_CODE (lhs) == SSA_NAME) if (TREE_CODE (lhs) == SSA_NAME)
bitmap_clear_bit (inserted_exprs, SSA_NAME_VERSION (lhs)); bitmap_clear_bit (inserted_exprs, SSA_NAME_VERSION (lhs));
release_defs (stmt); release_defs (stmt);