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re PR tree-optimization/71872 (ICE in inchash::add_expr, at tree.c:7782 - OEP_ADDRESS_OF asserted for ADDR_EXPR applied to constant)

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PR tree-optimization/71872
	* tree-data-ref.c (get_references_in_stmt): Ignore references
	with is_gimple_constant get_base_address.

	* gcc.c-torture/compile/pr71872.c: New test.

From-SVN: r238351
This commit is contained in:
Jakub Jelinek 2016-07-14 20:30:38 +02:00 • committed by Jakub Jelinek
parent d62b809c11
commit a241f8ca21
4 changed files with 28 additions and 1 deletions
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6
gcc/ChangeLog
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@ -1,3 +1,9 @@
2016-07-14 Jakub Jelinek <jakub@redhat.com>
PR tree-optimization/71872
* tree-data-ref.c (get_references_in_stmt): Ignore references
with is_gimple_constant get_base_address.
2016-07-14 Thomas Preud'homme <thomas.preudhomme@arm.com>
* config/arm/arm.h (TARGET_HAVE_LDACQ): Enable for ARMv8-M Mainline.

5
gcc/testsuite/ChangeLog
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@ -1,3 +1,8 @@
2016-07-14 Jakub Jelinek <jakub@redhat.com>
PR tree-optimization/71872
* gcc.c-torture/compile/pr71872.c: New test.
2016-07-14 Thomas Preud'homme <thomas.preudhomme@arm.com>
* gcc.target/arm/atomic-comp-swap-release-acquire.c: Rename into ...

15
gcc/testsuite/gcc.c-torture/compile/pr71872.c Normal file
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@ -0,0 +1,15 @@
/* PR tree-optimization/71872 */
struct __attribute__((may_alias)) S { int a; };
void
foo (int *x, struct S *y)
{
int i;
for (i = 0; i < 16; i++)
{
int a = 0;
if (*x)
*(struct S *) y = *(struct S *) &a;
}
}

3
gcc/tree-data-ref.c
View file

@ -3868,7 +3868,8 @@ get_references_in_stmt (gimple *stmt, vec<data_ref_loc, va_heap> *references)
if (DECL_P (op1)
|| (REFERENCE_CLASS_P (op1)
&& (base = get_base_address (op1))
&& TREE_CODE (base) != SSA_NAME))
&& TREE_CODE (base) != SSA_NAME
&& !is_gimple_min_invariant (base)))
{
ref.ref = op1;
ref.is_read = true;