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re PR tree-optimization/59102 (ICE on valid code at -Os and above on x86_64-linux-gnu) 

PR tree-optimization/59102
	* gimple-ssa-isolate-paths.c
	(insert_trap_and_remove_trailing_statments): Ensure STMT is a
	gimple assignment before looking at gimple_assign_lhs.

	PR tree-optimization/59102
	* gcc.c-torture/compile/pr59102.c: New test.

From-SVN: r204773
This commit is contained in:
Jeff Law 2013-11-13 20:18:17 -07:00
parent 41808d153a
commit 46dfed6556
4 changed files with 45 additions and 3 deletions
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7
gcc/ChangeLog
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@ -1,3 +1,10 @@
2013-11-13 Jeff Law <law@redhat.com>
PR tree-optimization/59102
* gimple-ssa-isolate-paths.c
(insert_trap_and_remove_trailing_statments): Ensure STMT is a
gimple assignment before looking at gimple_assign_lhs.
2013-11-13 Vladimir Makarov <vmakarov@redhat.com>
* ira.c: Add comment about threads at the top of file.

4
gcc/gimple-ssa-isolate-paths.c
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@ -74,9 +74,11 @@ insert_trap_and_remove_trailing_statements (gimple_stmt_iterator *si_p, tree op)
LHS will be a throw-away SSA_NAME and the RHS is the NULL dereference.
If the dereference is a store and we can easily transform the RHS,
then simplify the RHS to enable more DCE. */
then simplify the RHS to enable more DCE. Note that we require the
statement to be a GIMPLE_ASSIGN which filters out calls on the RHS. */
gimple stmt = gsi_stmt (*si_p);
if (walk_stmt_load_store_ops (stmt, (void *)op, NULL, check_loadstore)
&& is_gimple_assign (stmt)
&& INTEGRAL_TYPE_P (TREE_TYPE (gimple_assign_lhs (stmt))))
{
/* We just need to turn the RHS into zero converted to the proper

9
gcc/testsuite/ChangeLog
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@ -1,4 +1,9 @@
2013-11-14 Tom de Vries <tom@codesourcery.com>
2013-11-13 Jeff Law <law@redhat.com>
PR tree-optimization/59102
* gcc.c-torture/compile/pr59102.c: New test.
2013-11-13 Tom de Vries <tom@codesourcery.com>
* gcc.dg/tail-merge-store.c: New test.
@ -7,7 +12,7 @@
* testsuite/g++.dg/plugin/selfassign.c: Include gimple-iterator.h.
* testsuite/gcc.dg/plugin/selfassign.c: Likewise.
2013-11-12 Jeff Law <law@redhat.com>
2013-11-13 Jeff Law <law@redhat.com>
* PR middle-end/59119
* gcc.c-torture/compile/pr59119.c: New test.

28
gcc/testsuite/gcc.c-torture/compile/pr59102.c Normal file
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@ -0,0 +1,28 @@
int a, b, c, f;
struct S
{
int f0;
} d, *e;
struct S
foo ()
{
b = c = b || a == 0 || f % 11;
return d;
}
int
main ()
{
foo ();
if (b);
else
{
struct S **g = &e;
*g = 0;
*e = foo ();
}
return 0;
}