[Bug tree-optimization/90071] [7/8/9 Regression] internal compiler error: SSA corruption

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90071

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Priority|P3                          |P2
             Status|NEW                         |ASSIGNED
                 CC|                            |rguenth at gcc dot gnu.org
           Assignee|unassigned at gcc dot gnu.org      |rguenth at gcc dot 
gnu.org

--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
reassoc does this:

@@ -51,9 +75,11 @@
 f:
   _7 = d_20(D) != 0;
   _9 = _4 < 0;
-  _10 = _7 | _9;
+  _18 = (unsigned int) e_21(ab);
+  _16 = _18 + 1;
+  _14 = _16 > 1;
   _17 = _4 > 1;
-  _6 = _10 | _17;
+  _6 = _14 | _7;
   _8 = (int) _6;
   _12 = (long int) _8;
   _13 = (void *) _12;

it's likely folding

  _4 = e.1_3 + 1;
  _9 = _4 < 0;

here.  I'll take a look.