[Bug tree-optimization/47391] [4.5/4.6 Regression] read from const volatile incorrectly eliminated

[jakub at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47391

Jakub Jelinek <jakub at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Priority|P3                          |P1
      Known to work|                            |4.4.5
            Summary|read from const volatile    |[4.5/4.6 Regression] read
                   |incorrectly eliminated      |from const volatile
                   |                            |incorrectly eliminated
      Known to fail|                            |4.5.2, 4.6.0

--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> 2011-01-21 
08:28:20 UTC ---
4.5 actually miscompiles this too, 4.4 works.