[Bug tree-optimization/55107] [4.7/4.8 Regression] GCC in an infinite loop in PRE

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55107



Richard Biener <rguenth at gcc dot gnu.org> changed:



           What    |Removed                     |Added

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             Status|NEW                         |ASSIGNED

         AssignedTo|unassigned at gcc dot       |rguenth at gcc dot gnu.org

                   |gnu.org                     |



--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> 2012-12-10 
09:50:51 UTC ---

Mine.  We don't stop insertion:



Starting insert iteration 3362

Found partial redundancy for expression {nop_expr,d_33} (0024)

Skipping insertion of phi for partial redundancy: Looks like an induction

variable

Inserted pretmp_3451 = (unsigned short) d_25;

 in predecessor 19

Found fully redundant value

Found fully redundant value

Found fully redundant value

Found fully redundant value

Found fully redundant value

Found fully redundant value

Found fully redundant value

Found fully redundant value

Found fully redundant value

Starting insert iteration 3363

Found partial redundancy for expression {nop_expr,d_33} (0024)

Skipping insertion of phi for partial redundancy: Looks like an induction

variable

Inserted pretmp_3452 = (unsigned short) d_25;

 in predecessor 19

Found fully redundant value

Found fully redundant value

Found fully redundant value

Found fully redundant value

Found fully redundant value

Found fully redundant value

Found fully redundant value

Found fully redundant value

Found fully redundant value

Starting insert iteration 3364

Found partial redundancy for expression {nop_expr,d_33} (0024)

...