ToFirstComponent in wltransform.c uses PMarray, but AVIS_SSAASSIGN no longer valid
|Created on||Nov 08, 2009 17:20|
|Resolved on||Dec 11, 2009 17:30|
Summary says it all. wltransform in Phase 13 uses PMarray, but PM depends on presence of valid AVIS_SSAASSIGN. Unfortunately, the beginning of phase 13 removes SSA-ness. apex/histgradeAKD.sac suffers from this problem, when compiled with sac2c -extrema -nowlf -doawlf, in Build #16532, going whonose how far back in time. I do not know if WLTR can safely be moved in front of USSA. If so, then that may be an acceptable solution. Now, the direct cause of the bug is that we have something like: bound2 = [ul]; bound2' = bound2; z = with(... bound2') So, we have to chase bound2' back to bound2 to find the N_array. However, we are post-SSA, so this won't work. It may be that we can merely insert a VP call "somewhat' earlier in the phase, which would allow simplification of ToFirstComponent in WLTR. Suggestions welcome.
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