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[Bug tree-optimization/69580] [6 Regression] From 26 seconds to 10 minutes moving from gcc 5.3.1 to gcc 6.0.0


https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69580

--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
With checking turned on aarch64-linux-gnu:
 tree VRP                : 804.96 (61%) usr   0.28 ( 9%) sys 805.19 (61%) wall 
 35850 kB (14%) ggc
 dominator optimization  : 286.56 (22%) usr   0.19 ( 6%) sys 286.66 (22%) wall 
 24718 kB (10%) ggc

I don't have a compiler right now without checking but this seems huge even for
checking case.

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