[Bug tree-optimization/111268] [14 Regression] internal compiler error: in to_constant, at poly-int.h:504
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111268 Jakub Jelinek changed: What|Removed |Added CC||jakub at gcc dot gnu.org Keywords|needs-bisection | --- Comment #12 from Jakub Jelinek --- The #c8 testcase started to ICE with r13-926-g08afab6f8642f58f702010ec196dce3b00955627 The #c3 one started to ICE with r11-1445-g502d63b6d6141597bb18fd23c87736a1b384cf8f So, not really sure why is this marked as [14 Regression] only.
[Bug tree-optimization/111268] [14 Regression] internal compiler error: in to_constant, at poly-int.h:504
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111268 Andrew Pinski changed: What|Removed |Added Keywords||testsuite-fail --- Comment #11 from Andrew Pinski --- testsuite/gcc.dg/torture/neon-sve-bridge.c ICEs at -O2 and above because of this bug.
[Bug tree-optimization/111268] [14 Regression] internal compiler error: in to_constant, at poly-int.h:504
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111268
--- Comment #10 from Richard Biener ---
Btw, we have
(gdb) p debug (node)
t.c:3:6: note: node 0x3f341d0 (max_nunits=1, refcnt=1) vector(2) long unsigned
int
t.c:3:6: note: op: VEC_PERM_EXPR
t.c:3:6: note: stmt 0 _1 = BIT_FIELD_REF ;
t.c:3:6: note: stmt 1 _4 = BIT_FIELD_REF ;
t.c:3:6: note: lane permutation { 0[0] 0[1] }
t.c:3:6: note: children 0x3f34260
$1 = void
(gdb) p vtype
$2 =
it looks like "compatibility" somehow requires/allows us to V_C_E the
permuted argument to a fixed length vector? Otherwise vect_build_slp_tree_1
of course could check the BIT_FIELD_REF args are fixed length.
[Bug tree-optimization/111268] [14 Regression] internal compiler error: in to_constant, at poly-int.h:504
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111268
Richard Biener changed:
What|Removed |Added
Priority|P3 |P1
Last reconfirmed|2023-09-07 00:00:00 |2023-10-17
--- Comment #9 from Richard Biener ---
Re-confirmed.
during GIMPLE pass: slp
t.c: In function 'f':
t.c:3:6: internal compiler error: in to_constant, at poly-int.h:588
3 | void f(unsigned long *expected, svuint64_t values) {
| ^
0xe915f8 poly_int<2u, unsigned long>::to_constant() const
/space/rguenther/src/gcc/gcc/poly-int.h:588
0x1aedf84 vectorizable_slp_permutation_1
/space/rguenther/src/gcc/gcc/tree-vect-slp.cc:8766
0x1aeee54 vectorizable_slp_permutation
/space/rguenther/src/gcc/gcc/tree-vect-slp.cc:8931
0x1ae4321 vect_slp_analyze_node_operations_1
/space/rguenther/src/gcc/gcc/tree-vect-slp.cc:6049
the comment is outdated, we check
unsigned olanes = ncopies * SLP_TREE_LANES (node);
gcc_assert (repeating_p || multiple_p (olanes, nunits));
but then we have to adjust the following to poly arith somehow:
if (repeating_p)
vperm.quick_push ({{p.first, 0}, p.second + active_lane[p.first]});
else
{
/* We checked above that the vectors are constant-length. */
unsigned vnunits = TYPE_VECTOR_SUBPARTS (vtype).to_constant ();
unsigned vi = (active_lane[p.first] + p.second) / vnunits;
unsigned vl = (active_lane[p.first] + p.second) % vnunits;
vperm.quick_push ({{p.first, vi}, vl});
[Bug tree-optimization/111268] [14 Regression] internal compiler error: in to_constant, at poly-int.h:504
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111268
Andrew Pinski changed:
What|Removed |Added
Status|UNCONFIRMED |NEW
Last reconfirmed||2023-09-07
Ever confirmed|0 |1
--- Comment #8 from Andrew Pinski ---
Reduced testcase:
```
#include
void f(unsigned long *expected, svuint64_t values) {
svst1_u64(svptrue_b64(), expected, values);
expected[0] = (expected[0]+1);
expected[1] = (expected[1]+1);
}
```
[Bug tree-optimization/111268] [14 Regression] internal compiler error: in to_constant, at poly-int.h:504
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111268 --- Comment #7 from Andrew Pinski --- Interesting: /* We checked above that the vectors are constant-length. */ unsigned vnunits = TYPE_VECTOR_SUBPARTS (vtype).to_constant (); But it is not constant ...
[Bug tree-optimization/111268] [14 Regression] internal compiler error: in to_constant, at poly-int.h:504
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111268 --- Comment #6 from Andrew Pinski --- reducing ...
[Bug tree-optimization/111268] [14 Regression] internal compiler error: in to_constant, at poly-int.h:504
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111268 --- Comment #5 from Mathieu Malaterre --- (In reply to Andrew Pinski from comment #4) > Looks like this one is already fixed. Same symptoms with 20230902 snapshot: * https://buildd.debian.org/status/fetch.php?pkg=highway=arm64=1.0.8%7Egit20230830.fed142a-1=1693905326=0
[Bug tree-optimization/111268] [14 Regression] internal compiler error: in to_constant, at poly-int.h:504
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111268 Andrew Pinski changed: What|Removed |Added Keywords||ice-on-valid-code, ||needs-bisection Component|target |tree-optimization Target Milestone|--- |14.0 Summary|internal compiler error: in |[14 Regression] internal |to_constant, at |compiler error: in |poly-int.h:504 |to_constant, at ||poly-int.h:504 --- Comment #4 from Andrew Pinski --- Looks like this one is already fixed.
