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re PR debug/48768 (ICE in get_expr_operands())

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PR debug/48768
	* tree-ssa.c (insert_debug_temp_for_var_def): If degenerate_phi_result
	is error_mark_node, set value to NULL.

	* gcc.dg/pr48768.c: New test.

From-SVN: r172968
This commit is contained in:
Jakub Jelinek 2011-04-26 15:35:21 +02:00 • committed by Jakub Jelinek
parent 2c9da85bf0
commit 0c5f6539ad
4 changed files with 50 additions and 1 deletions
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4
gcc/ChangeLog
View file

@ -1,5 +1,9 @@
2011-04-26 Jakub Jelinek <jakub@redhat.com>
PR debug/48768
* tree-ssa.c (insert_debug_temp_for_var_def): If degenerate_phi_result
is error_mark_node, set value to NULL.
PR tree-optimization/48734
* tree-ssa-reassoc.c (eliminate_redundant_comparison): Give up
if return value from maybe_fold_*_comparsions isn't something

3
gcc/testsuite/ChangeLog
View file

@ -1,5 +1,8 @@
2011-04-26 Jakub Jelinek <jakub@redhat.com>
PR debug/48768
* gcc.dg/pr48768.c: New test.
PR tree-optimization/48734
* gcc.c-torture/compile/pr48734.c: New test.

38
gcc/testsuite/gcc.dg/pr48768.c Normal file
View file

@ -0,0 +1,38 @@
/* PR debug/48768 */
/* { dg-do compile } */
/* { dg-options "-O -fcompare-debug" } */
int a, b;
int
bar (void)
{
int i, j = 1;
for (i = 0; i != 10; i++)
{
lab:
if (i)
{
int *k = &j;
}
else if (j)
goto lab;
}
return 1;
}
inline int
foo (int x)
{
unsigned int c = x;
int d = x;
if (bar ())
for (; c; c++)
while (x >= 0)
if (foo (d) >= 0)
{
d = bar ();
a = b ? b : 1;
}
return 0;
}

6
gcc/tree-ssa.c
View file

@ -1,5 +1,5 @@
/* Miscellaneous SSA utility functions.
Copyright (C) 2001, 2002, 2003, 2004, 2005, 2007, 2008, 2009, 2010
Copyright (C) 2001, 2002, 2003, 2004, 2005, 2007, 2008, 2009, 2010, 2011
Free Software Foundation, Inc.
This file is part of GCC.
@ -352,6 +352,10 @@ insert_debug_temp_for_var_def (gimple_stmt_iterator *gsi, tree var)
value = degenerate_phi_result (def_stmt);
if (value && walk_tree (&value, find_released_ssa_name, NULL, NULL))
value = NULL;
/* error_mark_node is what fixup_noreturn_call changes PHI arguments
to. */
else if (value == error_mark_node)
value = NULL;
}
else if (is_gimple_assign (def_stmt))
{