------- Comment #18 from ramana at gcc dot gnu dot org 2010-04-02 00:01 -------
A work around I tried was to make cross-jumping run dependent on CSA which is
probably a heavy weight work around to what looks like a different problem. It
ended up retaining the correct ALIAS fields in this case but that's a heavy
weight solution and will in most likely hood make this bug go latent again.
I'm travelling the next few days with minimal network access and given this
needs a MI expert to look at this - so can't actively work on this till I get
back next Tuesday . Hence un-assigning myself from it.
Index: combine-stack-adj.c
===================================================================
--- combine-stack-adj.c (revision 157912)
+++ combine-stack-adj.c (working copy)
@@ -552,7 +552,6 @@ gate_handle_stack_adjustments (void)
static unsigned int
rest_of_handle_stack_adjustments (void)
{
- cleanup_cfg (flag_crossjumping ? CLEANUP_CROSSJUMP : 0);
/* This is kind of a heuristic. We need to run combine_stack_adjustments
even for machines with possibly nonzero RETURN_POPS_ARGS
@@ -562,6 +561,7 @@ rest_of_handle_stack_adjustments (void)
if (!ACCUMULATE_OUTGOING_ARGS)
#endif
{
+ cleanup_cfg (flag_crossjumping ? CLEANUP_CROSSJUMP : 0);
df_note_add_problem ();
df_analyze ();
combine_stack_adjustments ();
--
ramana at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
AssignedTo|ramana at gcc dot gnu dot |unassigned at gcc dot gnu
|org |dot org
Status|ASSIGNED |NEW
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42509
