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re PR tree-optimization/80109 (ICE in get_range_info, at tree-ssanames.c:375) 

PR tree-optimization/80109
	* gimple-ssa-warn-alloca.c (alloca_call_type): Only call get_range_info
	on INTEGRAL_TYPE_P.

	* gcc.dg/Walloca-14.c: New test.

Co-Authored-By: Martin Sebor <msebor@redhat.com>

From-SVN: r246325
This commit is contained in:
Marek Polacek 2017-03-21 16:21:14 +00:00 committed by Marek Polacek
parent 85106b8757
commit edc1747f1f
4 changed files with 38 additions and 4 deletions
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7
gcc/ChangeLog
View File

@ -1,3 +1,10 @@
2017-03-21 Marek Polacek <polacek@redhat.com>
Martin Sebor <msebor@redhat.com>
PR tree-optimization/80109
* gimple-ssa-warn-alloca.c (alloca_call_type): Only call get_range_info
on INTEGRAL_TYPE_P.
2017-03-21 Jakub Jelinek <jakub@redhat.com>
Segher Boessenkool <segher@kernel.crashing.org>

17
gcc/gimple-ssa-warn-alloca.c
View File

@ -327,11 +327,20 @@ alloca_call_type (gimple *stmt, bool is_vla, tree *invalid_casted_type)
// away with better range information. But it gets
// most of the cases.
gimple *def = SSA_NAME_DEF_STMT (len);
if (gimple_assign_cast_p (def)
&& TYPE_UNSIGNED (TREE_TYPE (gimple_assign_rhs1 (def))))
if (gimple_assign_cast_p (def))
{
len_casted = gimple_assign_rhs1 (def);
range_type = get_range_info (len_casted, &min, &max);
tree rhs1 = gimple_assign_rhs1 (def);
tree rhs1type = TREE_TYPE (rhs1);
// Bail if the argument type is not valid.
if (!INTEGRAL_TYPE_P (rhs1type))
return alloca_type_and_limit (ALLOCA_OK);
if (TYPE_UNSIGNED (rhs1type))
{
len_casted = rhs1;
range_type = get_range_info (len_casted, &min, &max);
}
}
// An unknown range or a range of the entire domain is
// really no range at all.

6
gcc/testsuite/ChangeLog
View File

@ -1,3 +1,9 @@
2017-03-21 Marek Polacek <polacek@redhat.com>
Martin Sebor <msebor@redhat.com>
PR tree-optimization/80109
* gcc.dg/Walloca-14.c: New test.
2017-03-21 Jakub Jelinek <jakub@redhat.com>
PR target/80125

12
gcc/testsuite/gcc.dg/Walloca-14.c Normal file
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@ -0,0 +1,12 @@
/* PR tree-optimization/80109 */
/* { dg-do compile } */
/* { dg-options "-O2 -Walloca-larger-than=126812070" } */
void
g (int *p)
{
extern void f (void *);
void *q = __builtin_alloca (p); /* { dg-warning "passing argument 1" } */
f (q);
}