[Bug tree-optimization/20168] const function causes the creation of GLOBAL_VAR

[steven at gcc dot gnu dot org]

--- Comment #5 from steven at gcc dot gnu dot org  2010-07-13 11:00 ---
Insofar something that doesn't exist anymore can be considered broken, this bug
is FIXED:

;; Function x (x)

x ()
{
  intD.0 aD.1233;
  intD.0 D.1983;

  # BLOCK 2 freq:1
  # PRED: ENTRY [100.0%]  (fallthru,exec)
  aD.1233_1 = constfunD.1227 ();
  # .MEMD.1986_5 = VDEF .MEMD.1986_4(D)
  # USE = nonlocal
  # CLB = nonlocal
  bambamD.1229 ();
  D.1983_3 = aD.1233_1 + aD.1233_1;
  return D.1983_3;
  # SUCC: EXIT [100.0%]

}


-- 

steven at gcc dot gnu dot org changed:

   What|Removed |Added

 Status|REOPENED|RESOLVED
 Resolution||FIXED


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=20168

[Bug tree-optimization/20168] const function causes the creation of GLOBAL_VAR

[pinskia at gcc dot gnu dot org]

--- Comment #4 from pinskia at gcc dot gnu dot org  2006-03-14 01:28 ---
Huh, I still get a .global_var as of yesterday:
  #   .GLOBAL_VAR_6 = V_MAY_DEF .GLOBAL_VAR_5;
  bambam ();


-- 

pinskia at gcc dot gnu dot org changed:

   What|Removed |Added

 Status|RESOLVED|REOPENED
 Resolution|FIXED   |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=20168

[Bug tree-optimization/20168] const function causes the creation of GLOBAL_VAR

[dnovillo at gcc dot gnu dot org]

--- Comment #3 from dnovillo at gcc dot gnu dot org  2006-03-10 15:36 
---

Fixed in 4.2.


-- 

dnovillo at gcc dot gnu dot org changed:

   What|Removed |Added

 Status|ASSIGNED|RESOLVED
 Resolution||FIXED


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=20168

[Bug tree-optimization/20168] const function causes the creation of GLOBAL_VAR

[pinskia at gcc dot gnu dot org]

--- Additional Comments From pinskia at gcc dot gnu dot org  2005-02-23 
15:43 ---
Changing this for Diego.

-- 
   What|Removed |Added

   Severity|normal  |enhancement
   Keywords|missed-optimization |
Summary|[4.0 regression] const  |const function causes the
   |function calls treated as   |creation of GLOBAL_VAR
   |pure by LIM 20100 fix   |
   Target Milestone|4.0.0   |---


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=20168

[Bug tree-optimization/20168] const function causes the creation of GLOBAL_VAR

[hp at gcc dot gnu dot org]

--- Additional Comments From hp at gcc dot gnu dot org  2005-02-23 15:45 
---
It deserves mentioning (for the audience) that the right thing happens for
the generated code in the test-case; this problem is mainly an internal
wart (IIUC):
...
dnovillo now, the problem is that if there is a mix of regular and 'const'
functions, we will have created .GLOBAL_VAR 
   unnecessarily.  that's bad.
dnovillo testing for !TREE_SIDE_EFFECTS is too broad.  We don't want to
consider 'const' functions.
...
hp yes, but I don't know how to create a test-case for *that*
...
dnovillo hp: this one is good enough.  we created .GLOBAL_VAR.  we shouldn't
have created it.
dnovillo the call to bambam shouldn't have a V_MAY_DEF for .GLOBAL_VAR


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=20168