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Date: Sat, 24 Dec 2005 01:46:00 -0000
Subject: [Bug tree-optimization/25553]  New: Missed removal of load
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From: "pinskia at gcc dot gnu dot org" <gcc-bugzilla@gcc.gnu.org>
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I don't know what this optimization is called but we miss the removal of the
load of a global variable:

int t;
int g(int);
int f(int tt)
{
  if (tt)
    t = 2;
  else
    t = 3;
  return g(t);
}


I should note I found this while looking at LAPACK.


-- 
           Summary: Missed removal of load
           Product: gcc
           Version: 4.2.0
            Status: UNCONFIRMED
          Keywords: missed-optimization
          Severity: enhancement
          Priority: P3
         Component: tree-optimization
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: pinskia at gcc dot gnu dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=25553