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re PR tree-optimization/48734 (ICE in eliminate_redundant_comparison, at tree-ssa-reassoc.c:1321)

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PR tree-optimization/48734
	* tree-ssa-reassoc.c (eliminate_redundant_comparison): Give up
	if return value from maybe_fold_*_comparsions isn't something
	the code is prepared to handle.

	* gcc.c-torture/compile/pr48734.c: New test.

From-SVN: r172967
This commit is contained in:
Jakub Jelinek 2011-04-26 15:33:49 +02:00 committed by Jakub Jelinek
parent ac6fdeacaf
commit 2c9da85bf0
4 changed files with 37 additions and 1 deletions
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7
gcc/ChangeLog
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@ -1,3 +1,10 @@
2011-04-26 Jakub Jelinek <jakub@redhat.com>
PR tree-optimization/48734
* tree-ssa-reassoc.c (eliminate_redundant_comparison): Give up
if return value from maybe_fold_*_comparsions isn't something
the code is prepared to handle.
2011-04-26 Uros Bizjak <ubizjak@gmail.com>
* config/i386/predicates.md (ext_QIreg_operand): Remove extra

3
gcc/testsuite/ChangeLog
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@ -1,5 +1,8 @@
2011-04-26 Jakub Jelinek <jakub@redhat.com>
PR tree-optimization/48734
* gcc.c-torture/compile/pr48734.c: New test.
PR testsuite/48753
* gcc.dg/tree-prof/val-prof-2.c: Adjust for 32-bit HWI.

11
gcc/testsuite/gcc.c-torture/compile/pr48734.c Normal file
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@ -0,0 +1,11 @@
/* PR tree-optimization/48734 */
unsigned int
foo (int x, unsigned int y, unsigned int z)
{
z &= (x == -__INT_MAX__ - 1 ? x : -x) > y;
z &= (x == -__INT_MAX__ - 1 ? x : -x) > y;
z &= (x == -__INT_MAX__ - 1 ? x : -x) > y;
z &= (x == -__INT_MAX__ - 1 ? x : -x) > y;
return z;
}

17
gcc/tree-ssa-reassoc.c
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@ -1,5 +1,6 @@
/* Reassociation for trees.
Copyright (C) 2005, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
Copyright (C) 2005, 2007, 2008, 2009, 2010, 2011
Free Software Foundation, Inc.
Contributed by Daniel Berlin <dan@dberlin.org>
This file is part of GCC.
@ -1279,6 +1280,20 @@ eliminate_redundant_comparison (enum tree_code opcode,
if (!useless_type_conversion_p (TREE_TYPE (curr->op), TREE_TYPE (t)))
t = fold_convert (TREE_TYPE (curr->op), t);
if (TREE_CODE (t) != INTEGER_CST
&& !operand_equal_p (t, curr->op, 0))
{
enum tree_code subcode;
tree newop1, newop2;
if (!COMPARISON_CLASS_P (t))
continue;
extract_ops_from_tree (t, &subcode, &newop1, &newop2);
STRIP_USELESS_TYPE_CONVERSION (newop1);
STRIP_USELESS_TYPE_CONVERSION (newop2);
if (!is_gimple_val (newop1) || !is_gimple_val (newop2))
continue;
}
if (dump_file && (dump_flags & TDF_DETAILS))
{
fprintf (dump_file, "Equivalence: ");