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re PR tree-optimization/77514 (ICE in VN_INFO_GET, at tree-ssa-sccvn.c:406 w/ -O2 (and above)) 

2016-09-19  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/77514
	* tree-ssa-pre.c (create_expression_by_pieces): Optimize
	search for folded stmt.

From-SVN: r240226
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Richard Biener 2016-09-19 06:54:10 +00:00 committed by Richard Biener
parent cdf060f898
commit ed4fd95729
2 changed files with 12 additions and 3 deletions
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6
gcc/ChangeLog
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@ -1,3 +1,9 @@
2016-09-19 Richard Biener <rguenther@suse.de>
PR tree-optimization/77514
* tree-ssa-pre.c (create_expression_by_pieces): Optimize
search for folded stmt.
2016-09-17 Jan Hubicka <hubicka@ucw.cz>
* passes.def (pass_early_thread_jumps): Schedule after forwprop.

9
gcc/tree-ssa-pre.c
View File

@ -2881,13 +2881,16 @@ create_expression_by_pieces (basic_block block, pre_expr expr,
}
/* Likewise if we simplified to sth not queued for insertion. */
bool found = false;
gsi = gsi_start (forced_stmts);
for (; !gsi_end_p (gsi); gsi_next (&gsi))
gsi = gsi_last (forced_stmts);
for (; !gsi_end_p (gsi); gsi_prev (&gsi))
{
gimple *stmt = gsi_stmt (gsi);
tree forcedname = gimple_get_lhs (stmt);
if (forcedname == folded)
found = true;
{
found = true;
break;
}
}
if (! found)
{