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Add forgotten requeing in propagate_subaccesses_across_link

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2019-03-18  Martin Jambor  <mjambor@suse.cz>

	PR tree-optimization/89546
	* tree-sra.c (propagate_subaccesses_across_link): Requeue new_acc if
	any propagation to its children took place.

	testsuite/
	* gcc.dg/tree-ssa/pr89546.c: New test.

From-SVN: r269761
This commit is contained in:
Martin Jambor 2019-03-18 12:28:01 +01:00 committed by Martin Jambor
parent 4d7dfada89
commit cfce6e055d
4 changed files with 117 additions and 2 deletions
gcc
ChangeLog
testsuite
ChangeLog
gcc.dg/tree-ssa
pr89546.c
tree-sra.c

6
gcc/ChangeLog

@ -1,3 +1,9 @@
2019-03-18 Martin Jambor <mjambor@suse.cz>
PR tree-optimization/89546
* tree-sra.c (propagate_subaccesses_across_link): Requeue new_acc if
any propagation to its children took place.
2019-03-18 Andrew Burgess <andrew.burgess@embecosm.com>
PR target/89627

5
gcc/testsuite/ChangeLog

@ -1,3 +1,8 @@
2019-03-18 Martin Jambor <mjambor@suse.cz>
PR tree-optimization/89546
* gcc.dg/tree-ssa/pr89546.c: New test.
2019-03-18 Andrew Burgess <andrew.burgess@embecosm.com>
PR target/89627

100
gcc/testsuite/gcc.dg/tree-ssa/pr89546.c Normal file

@ -0,0 +1,100 @@
/* { dg-do run } */
/* { dg-options "-O" } */
struct I
{
int i;
};
struct A
{
struct I i1;
struct I i2;
struct I i3;
};
struct B
{
struct I i0;
struct A a;
};
struct C
{
struct I i00;
struct B b;
};
volatile int v;
void __attribute__((noipa))
consume_i (struct I i)
{
v = i.i;
}
void __attribute__((noipa))
consume_a (struct A a)
{
v = a.i1.i;
}
void __attribute__((noipa))
consume_b (struct B b)
{
v = b.a.i1.i;
}
void __attribute__((noipa))
consume_c (struct C c)
{
v = c.b.a.i1.i;
}
int __attribute__((noipa))
foo (struct I input)
{
struct I i1, i2, i3;
struct A a1, a2, a3;
struct B b1;
struct C c;
i1 = input;
a1.i1 = i1;
b1.a = a1;
i2.i = 1;
b1.i0 = i2;
c.b = b1;
a2 = c.b.a;
a3 = a2;
i3 = a3.i1;
int t = c.b.i0.i;
a2.i3.i = 4;
consume_i (i1);
consume_i (i2);
consume_b (b1);
consume_a (a1);
consume_a (a2);
consume_a (a3);
consume_c (c);
return i3.i + t;
}
int
main (int argc, char *argv[])
{
struct I s;
s.i = 1234;
int i = foo (s);
if (i != 1235)
__builtin_abort ();
return 0;
}

8
gcc/tree-sra.c

@ -2752,8 +2752,12 @@ propagate_subaccesses_across_link (struct access *lacc, struct access *racc)
rchild->grp_hint = 1;
new_acc->grp_hint |= new_acc->grp_read;
if (rchild->first_child)
ret |= propagate_subaccesses_across_link (new_acc, rchild);
if (rchild->first_child
&& propagate_subaccesses_across_link (new_acc, rchild))
{
ret = 1;
add_access_to_work_queue (new_acc);
}
}
else
{