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re PR tree-optimization/29637 (Endless recursion in make_vector_type)

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PR tree-optimization/29637
	* tree.c (make_vector_type): Don't recurse if TYPE_MAIN_VARIANT
	of the innertype is the innertype itself.

	* gcc.dg/pr29637.c: New test.

From-SVN: r118175
This commit is contained in:
Jakub Jelinek 2006-10-30 09:01:28 +01:00 committed by Jakub Jelinek
parent 5fbd205139
commit cc59abbf35
4 changed files with 36 additions and 1 deletions
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6
gcc/ChangeLog
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@ -1,3 +1,9 @@
2006-10-30 Jakub Jelinek <jakub@redhat.com>
PR tree-optimization/29637
* tree.c (make_vector_type): Don't recurse if TYPE_MAIN_VARIANT
of the innertype is the innertype itself.
2006-10-30 Danny Smith <dannysmith@users.sourceforge.net>
* dwarf2out.c (file_name_acquire): Correct typo.

5
gcc/testsuite/ChangeLog
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@ -1,3 +1,8 @@
2006-10-30 Jakub Jelinek <jakub@redhat.com>
PR tree-optimization/29637
* gcc.dg/pr29637.c: New test.
2006-10-29 Roger Sayle <roger@eyesopen.com>
* gcc.dg/fold-compare-1.c: Update to reflect recent changes in

23
gcc/testsuite/gcc.dg/pr29637.c Normal file
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@ -0,0 +1,23 @@
/* PR tree-optimization/29637 */
/* { dg-do compile } */
/* { dg-options "-O2 -ftree-vectorize" } */
typedef struct __attribute__ ((aligned (8)))
{
short a, b, c, d;
} A;
typedef struct
{
A a[24];
} B;
static const A b = { 0, 0, 1, -1 };
void
foo (B *x)
{
int i;
for (i = 0; i <= 20; i += 4)
x->a[i] = b;
}

3
gcc/tree.c
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@ -6400,7 +6400,8 @@ make_vector_type (tree innertype, int nunits, enum machine_mode mode)
/* Build a main variant, based on the main variant of the inner type, then
use it to build the variant we return. */
if (TYPE_ATTRIBUTES (innertype) || TYPE_QUALS (innertype))
if ((TYPE_ATTRIBUTES (innertype) || TYPE_QUALS (innertype))
&& TYPE_MAIN_VARIANT (innertype) != innertype)
return build_type_attribute_qual_variant (
make_vector_type (TYPE_MAIN_VARIANT (innertype), nunits, mode),
TYPE_ATTRIBUTES (innertype),