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re PR tree-optimization/85478 (ICE with single element vector)

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Fix PR85478

gcc/ChangeLog:

2018-04-24  Andreas Krebbel  <krebbel@linux.ibm.com>

	PR tree-optimization/85478
	* tree-vect-loop.c (vect_analyze_loop_2): Do not call
	vect_grouped_store_supported for single element vectors.

gcc/testsuite/ChangeLog:

2018-04-24  Andreas Krebbel  <krebbel@linux.ibm.com>

	PR tree-optimization/85478
	* g++.dg/pr85478.C: New test.

From-SVN: r259593
This commit is contained in:
Andreas Krebbel 2018-04-24 12:18:26 +00:00 committed by Andreas Krebbel
parent 4149dd37d9
commit 062c0a7b2f
4 changed files with 60 additions and 2 deletions
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6
gcc/ChangeLog
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@ -1,3 +1,9 @@
2018-04-24 Andreas Krebbel <krebbel@linux.ibm.com>
PR tree-optimization/85478
* tree-vect-loop.c (vect_analyze_loop_2): Do not call
vect_grouped_store_supported for single element vectors.
2018-04-24 Richard Biener <rguenther@suse.de>
PR target/85491

5
gcc/testsuite/ChangeLog
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@ -1,3 +1,8 @@
2018-04-24 Andreas Krebbel <krebbel@linux.ibm.com>
PR tree-optimization/85478
* g++.dg/pr85478.C: New test.
2018-04-23 Eric Botcazou <ebotcazou@adacore.com>
* g++.dg/torture/pr85496.C: New test.

46
gcc/testsuite/g++.dg/pr85478.C Normal file
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@ -0,0 +1,46 @@
/* { dg-do compile { target { s390*-*-* } } } */
/* { dg-options "-O3 -march=arch12 -std=c++11 -Wno-return-type" } */
struct a {
enum { b };
};
struct c {
template <typename d, typename e> static void f(d g, e h) {
d i;
for (; i != g; ++h, ++i)
*h = *i;
}
};
template <int, typename d, typename e> void j(d g, e h) { c::f(g, h); }
template <int k, typename d, typename e> void l(d g, e h) { j<k>(g, h); }
template <typename d, typename e> void aa(d g, e h) { l<a::b>(g, h); }
template <typename> class ab;
template <> struct ab<float> {
_Complex m() { return n; }
_Complex n;
};
template <> struct ab<long double> {
ab(ab<float> g) : n(g.m()) {}
_Complex long double n;
};
template <int ac, typename o> class p {
public:
template <typename q> p &operator=(const p<ac, q> &);
o *ad;
};
template <typename o> class r : public p<2, o> {};
template <int ac, typename o>
template <typename q>
p<ac, o> &p<ac, o>::operator=(const p<ac, q> &g) {
aa(&g.ad[0], &ad[0]);
}
template <typename ae> class s : public r<ae> {
template <typename t> s &operator=(const s<t> &);
};
template <typename ae>
template <typename t>
s<ae> &s<ae>::operator=(const s<t> &g) {
p<2, ae>::operator=(g);
}
template s<ab<long double>> &s<ab<long double>>::
operator=(const s<ab<float>> &);

5
gcc/tree-vect-loop.c
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@ -2492,8 +2492,9 @@ again:
unsigned int size = STMT_VINFO_GROUP_SIZE (vinfo);
tree vectype = STMT_VINFO_VECTYPE (vinfo);
if (! vect_store_lanes_supported (vectype, size, false)
&& ! vect_grouped_store_supported (vectype, size))
return false;
&& ! known_eq (TYPE_VECTOR_SUBPARTS (vectype), 1U)
&& ! vect_grouped_store_supported (vectype, size))
return false;
FOR_EACH_VEC_ELT (SLP_INSTANCE_LOADS (instance), j, node)
{
vinfo = vinfo_for_stmt (SLP_TREE_SCALAR_STMTS (node)[0]);