http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54796



--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> 2012-10-03 
17:35:44 UTC ---

Perhaps it would suffice to reserve another rtx flag bit on VALUE for

SP_BASED_VALUE_P, and just from var-tracking if hard_frame_pointer_adjustment

is != -1 (i.e. frame_pointer_needed and hfp = assignment has been seen) mark

that way sp values that are created afterwards, and change find_base_term in

alias.c

so that it returns static_reg_base_value[STACK_POINTER_REGNUM] when seeing

VALUEs marked that way.

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