[Bug tree-optimization/56029] [4.8 Regression] ICE: verify_gimple failed, location references block not in block tree

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56029



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



           What    |Removed                     |Added

----------------------------------------------------------------------------

             Status|UNCONFIRMED                 |ASSIGNED

   Last reconfirmed|                            |2013-01-18

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

                   |gnu.org                     |

     Ever Confirmed|0                           |1



--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> 2013-01-18 
12:16:36 UTC ---

It's the PHI arg location of



 <integer_cst 0x7ffff47f59e0 type <pointer_type 0x7ffff6754d20> constant 0>



as seen after IPA inline transform.



Ah ...



          FOR_EACH_PHI_ARG (arg_p, phi, i, SSA_OP_ALL_USES)

            {

              tree arg = USE_FROM_PTR (arg_p);

              int index = PHI_ARG_INDEX_FROM_USE (arg_p);

              tree block =

                LOCATION_BLOCK (gimple_phi_arg_location (phi, index));

              if (block != NULL)

                TREE_USED (block) = true;

              mark_all_vars_used (&arg);

            }



well - that doesn't consider non-SSA args.