[Bug tree-optimization/23382] [4.1 Regression] tree-ssa-alias creates a new virtual variable for malloc each time may_alias is run (HEAP)

[pinskia at physics dot uc dot edu]

------- Additional Comments From pinskia at physics dot uc dot edu  2005-08-14 
03:48 -------
Subject: Re:  [4.1 Regression] tree-ssa-alias creates a new virtual variable 
for malloc each time may_alias is run (HEAP)


On Aug 13, 2005, at 11:40 PM, dberlin at dberlin dot org wrote:

> Uh, so?
We keep the virtual variable around even in the clobbered variables.
Add a function call to an different function like say f so it does
not get GC'd and we keep on adding more and more V_MAY_DEFs:

   #   HEAP.6_36 = V_MAY_DEF <HEAP.6_73>;
   #   HEAP.7_37 = V_MAY_DEF <HEAP.7_71>;
   #   HEAP.8_38 = V_MAY_DEF <HEAP.8_70>;
   #   HEAP.18_78 = V_MAY_DEF <HEAP.18_77>;
   #   HEAP.19_79 = V_MAY_DEF <HEAP.19_14>;
   #   HEAP.20_80 = V_MAY_DEF <HEAP.20_76>;
   g ();


-- Pinski



-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23382