https://gcc.gnu.org/bugzilla/show_bug.cgi?id=127085
Aldy Hernandez <aldyh at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |rguenth at gcc dot gnu.org
--- Comment #2 from Aldy Hernandez <aldyh at gcc dot gnu.org> ---
I’m seeing:
aldyh@cfarm136:~/gcc/bld/scratch-pr127085-orig/build/gcc$ ./cc1 -quiet -Os a.c
a.c: In function ‘f19’:
a.c:8:6: error: loop with header 7 not in loop tree
...
Could I get a little hint here, cause I thought I was already excluding loops:
+preserves_loop_structure_p (edge e)
+{
+ basic_block bb = e->dest;
+
+ if ((e->flags & EDGE_DFS_BACK)
+ || e->src->loop_father != bb->loop_father)
+ return false;
+
+ edge s;
+ edge_iterator ei;
+ FOR_EACH_EDGE (s, ei, bb->succs)
+ if ((s->flags & EDGE_DFS_BACK)
+ || s->dest->loop_father != bb->loop_father)
+ return false;
+
+ return true;
+}
Is there a stricter way of not messing up loops, or not creating ones, which I
assume is what’s going on here?
