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Use get/set_ptr_nonnull in ipa-vrp 

Use get/set_ptr_nonnull in ipa-vrp
gcc/ChangeLog:

2016-10-18  Kugan Vivekanandarajah  <kuganv@linaro.org>

	* ipa-prop.c (ipa_compute_jump_functions_for_edge): Set value range
	for pointer type too.
	(ipcp_update_vr): set_ptr_nonnull for pointer.

gcc/testsuite/ChangeLog:

2016-10-18  Kugan Vivekanandarajah  <kuganv@linaro.org>

	* gcc.dg/ipa/vrp4.c: New test.

From-SVN: r241288
This commit is contained in:
Kugan Vivekanandarajah 2016-10-17 23:37:57 +00:00 committed by Kugan Vivekanandarajah
parent 735b8f9fc4
commit 718625ad3a
4 changed files with 78 additions and 16 deletions
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6
gcc/ChangeLog
View File

@ -1,3 +1,9 @@
2016-10-18 Kugan Vivekanandarajah <kuganv@linaro.org>
* ipa-prop.c (ipa_compute_jump_functions_for_edge): Set value range
for pointer type too.
(ipcp_update_vr): set_ptr_nonnull for pointer.
2016-10-18 Kugan Vivekanandarajah <kuganv@linaro.org>
* tree-ssa-alias.h (pt_solution_singleton_or_null_p): Renamed from

57
gcc/ipa-prop.c
View File

@ -1668,7 +1668,22 @@ ipa_compute_jump_functions_for_edge (struct ipa_func_body_info *fbi,
useful_context = true;
}
if (!POINTER_TYPE_P (TREE_TYPE (arg)))
if (POINTER_TYPE_P (TREE_TYPE (arg)))
{
if (TREE_CODE (arg) == SSA_NAME
&& param_type
&& get_ptr_nonnull (arg))
{
jfunc->vr_known = true;
jfunc->m_vr.type = VR_ANTI_RANGE;
jfunc->m_vr.min = build_int_cst (TREE_TYPE (arg), 0);
jfunc->m_vr.max = build_int_cst (TREE_TYPE (arg), 0);
jfunc->m_vr.equiv = NULL;
}
else
gcc_assert (!jfunc->vr_known);
}
else
{
wide_int min, max;
value_range_type type;
@ -5602,27 +5617,37 @@ ipcp_update_vr (struct cgraph_node *node)
continue;
if (vr[i].known
&& INTEGRAL_TYPE_P (TREE_TYPE (ddef))
&& !POINTER_TYPE_P (TREE_TYPE (ddef))
&& (vr[i].type == VR_RANGE || vr[i].type == VR_ANTI_RANGE))
{
tree type = TREE_TYPE (ddef);
unsigned prec = TYPE_PRECISION (type);
if (dump_file)
if (INTEGRAL_TYPE_P (TREE_TYPE (ddef)))
{
fprintf (dump_file, "Setting value range of param %u ", i);
fprintf (dump_file, "%s[",
(vr[i].type == VR_ANTI_RANGE) ? "~" : "");
print_decs (vr[i].min, dump_file);
fprintf (dump_file, ", ");
print_decs (vr[i].max, dump_file);
fprintf (dump_file, "]\n");
if (dump_file)
{
fprintf (dump_file, "Setting value range of param %u ", i);
fprintf (dump_file, "%s[",
(vr[i].type == VR_ANTI_RANGE) ? "~" : "");
print_decs (vr[i].min, dump_file);
fprintf (dump_file, ", ");
print_decs (vr[i].max, dump_file);
fprintf (dump_file, "]\n");
}
set_range_info (ddef, vr[i].type,
wide_int_storage::from (vr[i].min, prec,
TYPE_SIGN (type)),
wide_int_storage::from (vr[i].max, prec,
TYPE_SIGN (type)));
}
else if (POINTER_TYPE_P (TREE_TYPE (ddef))
&& vr[i].type == VR_ANTI_RANGE
&& wi::eq_p (vr[i].min, 0)
&& wi::eq_p (vr[i].max, 0))
{
if (dump_file)
fprintf (dump_file, "Setting nonnull for %u\n", i);
set_ptr_nonnull (ddef);
}
set_range_info (ddef, vr[i].type,
wide_int_storage::from (vr[i].min, prec,
TYPE_SIGN (type)),
wide_int_storage::from (vr[i].max, prec,
TYPE_SIGN (type)));
}
}
}

4
gcc/testsuite/ChangeLog
View File

@ -1,3 +1,7 @@
2016-10-18 Kugan Vivekanandarajah <kuganv@linaro.org>
* gcc.dg/ipa/vrp4.c: New test.
2016-10-18 Kugan Vivekanandarajah <kuganv@linaro.org>
* gcc.dg/torture/pr39074-2.c: Adjust testcase.

27
gcc/testsuite/gcc.dg/ipa/vrp4.c Normal file
View File

@ -0,0 +1,27 @@
/* { dg-do compile } */
/* { dg-options "-O2 -fdump-ipa-cp-details" } */
static __attribute__((noinline, noclone))
int foo (int *p)
{
if (!p)
return 0;
*p = 1;
}
struct st
{
int a;
int b;
};
int bar (struct st *s)
{
if (!s)
return 0;
foo (&s->a);
foo (&s->b);
}
/* { dg-final { scan-ipa-dump "Setting nonnull for 0" "cp" } } */