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re PR middle-end/38428 (ice for Linux kernel code with -O2)

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PR middle-end/38428
	* tree-ssa-operands.c (get_expr_operands) <case BIT_FIELD_REF>: Set
	gimple_set_has_volatile_ops if the BIT_FIELD_REF is volatile.

	* gcc.c-torture/compile/pr38428.c: New test.

From-SVN: r142527
This commit is contained in:
Jakub Jelinek 2008-12-06 22:06:43 +01:00 committed by Jakub Jelinek
parent 8b86bdbc02
commit f11bea25dd
4 changed files with 33 additions and 0 deletions
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6
gcc/ChangeLog
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@ -1,3 +1,9 @@
2008-12-06 Jakub Jelinek <jakub@redhat.com>
PR middle-end/38428
* tree-ssa-operands.c (get_expr_operands) <case BIT_FIELD_REF>: Set
gimple_set_has_volatile_ops if the BIT_FIELD_REF is volatile.
2008-12-07 Ben Elliston <bje@au.ibm.com>
* gthr-single.h (__gthread_once): Adjust prototype to match all

3
gcc/testsuite/ChangeLog
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@ -1,5 +1,8 @@
2008-12-06 Jakub Jelinek <jakub@redhat.com>
PR middle-end/38428
* gcc.c-torture/compile/pr38428.c: New test.
PR middle-end/38422
* gcc.c-torture/execute/pr38422.c: New test.

20
gcc/testsuite/gcc.c-torture/compile/pr38428.c Normal file
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@ -0,0 +1,20 @@
/* PR middle-end/38428 */
struct S
{
volatile struct
{
unsigned int t : 1;
} s;
};
int
foo (struct S *x)
{
int ret;
if (x->s.t)
ret = 0;
else
ret = 10;
return ret;
}

4
gcc/tree-ssa-operands.c
View File

@ -2010,6 +2010,10 @@ get_expr_operands (gimple stmt, tree *expr_p, int flags)
}
case BIT_FIELD_REF:
if (TREE_THIS_VOLATILE (expr))
gimple_set_has_volatile_ops (stmt, true);
/* FALLTHRU */
case TRUTH_NOT_EXPR:
case VIEW_CONVERT_EXPR:
do_unary: