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* [Bug optimization/14729] New: [tree-ssa] missed semi high abstraction penalty due to casts
@ 2004-03-25  3:29 pinskia at gcc dot gnu dot org
  2004-03-25  3:29 ` [Bug optimization/14729] " pinskia at gcc dot gnu dot org
                   ` (6 more replies)
  0 siblings, 7 replies; 8+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2004-03-25  3:29 UTC (permalink / raw)
  To: gcc-bugs

Derived from <http://gcc.gnu.org/ml/gcc/2004-03/msg01314.html>.
struct OOf {
        float value;
        OOf() {value = 0.0;}
};
inline OOf operator+(OOf op1, OOf op2)
{
        OOf f;
        f.value = op1.value + op2.value;
        return f;
}
inline OOf operator*(OOf op1, OOf op2)
{
        OOf f;
        f.value = op1.value * op2.value;
        return f;
}
inline OOf operator-(OOf op1, OOf op2)
{
        OOf f;
        f.value = op1.value - op2.value;
        return f;
}
OOf test_func(
        OOf a,
        OOf b,
        OOf c
)
{
        OOf d, e;
        OOf result;
        d = a * b + b * c;
        e = a * c - b * d;
        result = d * e;
        return result;
}

I also have a patch to fix this one too.

-- 
           Summary: [tree-ssa] missed semi high abstraction penalty due to
                    casts
           Product: gcc
           Version: tree-ssa
            Status: UNCONFIRMED
          Keywords: pessimizes-code
          Severity: enhancement
          Priority: P2
         Component: optimization
        AssignedTo: pinskia at gcc dot gnu dot org
        ReportedBy: pinskia at gcc dot gnu dot org
                CC: gcc-bugs at gcc dot gnu dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14729


^ permalink raw reply	[flat|nested] 8+ messages in thread
end of thread, other threads:[~2004-06-02 18:58 UTC | newest]

Thread overview: 8+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2004-03-25  3:29 [Bug optimization/14729] New: [tree-ssa] missed semi high abstraction penalty due to casts pinskia at gcc dot gnu dot org
2004-03-25  3:29 ` [Bug optimization/14729] " pinskia at gcc dot gnu dot org
2004-04-03  5:04 ` pinskia at gcc dot gnu dot org
2004-05-17 13:29 ` [Bug tree-optimization/14729] " pinskia at gcc dot gnu dot org
2004-05-24 17:49 ` pinskia at gcc dot gnu dot org
2004-06-02  4:41 ` pinskia at gcc dot gnu dot org
2004-06-02 18:57 ` cvs-commit at gcc dot gnu dot org
2004-06-02 18:58 ` pinskia at gcc dot gnu dot org

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