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re PR ipa/66793 (ICE at -Os and above on x86_64-linux-gnu (verify_flow_info failed)) 

2015-07-08  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/66793
	* gimple-ssa-isolate-paths.c (insert_trap_and_remove_trailing_statemen):
	Properly split the block after stmts ending it.

	* gcc.dg/torture/pr66793.c: New testcase.

From-SVN: r225546
This commit is contained in:
Richard Biener 2015-07-08 11:54:28 +00:00 committed by Richard Biener
parent cd6bbb330d
commit 8f5ef6939f
4 changed files with 45 additions and 1 deletions
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6
gcc/ChangeLog
View File

@ -1,3 +1,9 @@
2015-07-08 Richard Biener <rguenther@suse.de>
PR tree-optimization/66793
* gimple-ssa-isolate-paths.c (insert_trap_and_remove_trailing_statemen):
Properly split the block after stmts ending it.
2015-07-08 Richard Biener <rguenther@suse.de>
PR tree-optimization/66794

9
gcc/gimple-ssa-isolate-paths.c
View File

@ -103,7 +103,14 @@ insert_trap_and_remove_trailing_statements (gimple_stmt_iterator *si_p, tree op)
if (walk_stmt_load_store_ops (stmt, (void *)op,
check_loadstore,
check_loadstore))
gsi_insert_after (si_p, seq, GSI_NEW_STMT);
{
gsi_insert_after (si_p, seq, GSI_NEW_STMT);
if (stmt_ends_bb_p (stmt))
{
split_block (gimple_bb (stmt), stmt);
return;
}
}
else
gsi_insert_before (si_p, seq, GSI_NEW_STMT);

5
gcc/testsuite/ChangeLog
View File

@ -1,3 +1,8 @@
2015-07-08 Richard Biener <rguenther@suse.de>
PR tree-optimization/66793
* gcc.dg/torture/pr66793.c: New testcase.
2015-07-08 Richard Biener <rguenther@suse.de>
PR tree-optimization/66794

26
gcc/testsuite/gcc.dg/torture/pr66793.c Normal file
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@ -0,0 +1,26 @@
/* { dg-do link } */
int a, b, c;
struct S0
{
int f1;
} *d;
void
fn1 (struct S0 p)
{
for (p.f1 = 0; p.f1 < 1; p.f1++)
c = a && b ? a && b : 1;
for (; c;)
;
}
int
main ()
{
struct S0 **f = &d;
d = 0;
fn1 (**f);
return 0;
}