------- Comment #7 from rguenth at gcc dot gnu dot org 2008-07-17 18:01 ------- pointer_plus_2_bits will confuse points-to alias analysis galore. Of course this doesn't explain the difference to -O0.
Still, -O1 is fast, -O1 -fstrict-aliasing is _very_ slow.
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rguenth at gcc dot gnu dot org changed:
What |Removed |Added
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Keywords| |alias, missed-optimization
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36861
