[Bug middle-end/89677] [8 Regression] internal compiler error: in wide_int_to_tree_1, at tree.c:1549

2019-03-13 Thread rguenth at gcc dot gnu.org 
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89677

--- Comment #4 from Richard Biener  ---
Author: rguenth
Date: Wed Mar 13 11:32:11 2019
New Revision: 269646

URL: https://gcc.gnu.org/viewcvs?rev=269646=gcc=rev
Log:
2019-03-13  Richard Biener  

PR middle-end/89677
* tree-scalar-evolution.c (simplify_peeled_chrec): Do not
throw FP expressions at tree-affine.

* gcc.dg/torture/pr89677.c: New testcase.

Added:
trunk/gcc/testsuite/gcc.dg/torture/pr89677.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/testsuite/ChangeLog
trunk/gcc/tree-scalar-evolution.c

[Bug middle-end/89677] [8 Regression] internal compiler error: in wide_int_to_tree_1, at tree.c:1549

2019-03-13 Thread rguenth at gcc dot gnu.org 
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89677

--- Comment #3 from Richard Biener  ---
We're analyzing a CHREC of type float, sth the affine machinery isn't really
prepared to handle.  The rev in question makes us more defensive but in the
end we're lucky.

Testing a real patch for the issue.

[Bug middle-end/89677] [8 Regression] internal compiler error: in wide_int_to_tree_1, at tree.c:1549

2019-03-12 Thread rguenth at gcc dot gnu.org 
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89677

Richard Biener  changed:

   What|Removed |Added

 Status|NEW |ASSIGNED
   Assignee|unassigned at gcc dot gnu.org  |rguenth at gcc dot 
gnu.org

--- Comment #2 from Richard Biener  ---
I will investigate.

[Bug middle-end/89677] [8 Regression] internal compiler error: in wide_int_to_tree_1, at tree.c:1549

2019-03-12 Thread jakub at gcc dot gnu.org 
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89677

Jakub Jelinek  changed:

   What|Removed |Added

 Status|UNCONFIRMED |NEW
   Last reconfirmed||2019-03-12
 CC||jakub at gcc dot gnu.org
  Known to work||7.3.0, 9.0
   Target Milestone|--- |8.4
Summary|internal compiler error: in |[8 Regression] internal
   |wide_int_to_tree_1, at  |compiler error: in
   |tree.c:1549 |wide_int_to_tree_1, at
   ||tree.c:1549
 Ever confirmed|0   |1
  Known to fail||8.3.0

--- Comment #1 from Jakub Jelinek  ---
Started to ICE with r247048.
This got fixed or made latent with r266956 on the trunk.
Slightly cleaned up testcase:
int a, b, d;
unsigned c;
float e, f, g;
void
foo (void)
{
  float *i = 
  for (; c < 10; c += 3)
for (; d; d += 3)
  {
a = *i;
g = f + 0;
f = b + *i + (b - e + 305219) + -b + 3;
  }
}

[Bug middle-end/89677] [8 Regression] internal compiler error: in wide_int_to_tree_1, at tree.c:1549

2019-03-12 Thread jakub at gcc dot gnu.org 
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89677

Jakub Jelinek  changed:

   What|Removed |Added

   Priority|P3  |P2