1.1 --- a/src/share/vm/opto/mulnode.cpp Tue Apr 29 19:45:22 2008 -0700
1.2 +++ b/src/share/vm/opto/mulnode.cpp Wed May 07 08:06:46 2008 -0700
1.3 @@ -365,6 +365,25 @@
1.4 }
1.5
1.6 //=============================================================================
1.7 +//------------------------------Value------------------------------------------
1.8 +const Type *MulHiLNode::Value( PhaseTransform *phase ) const {
1.9 + // Either input is TOP ==> the result is TOP
1.10 + const Type *t1 = phase->type( in(1) );
1.11 + const Type *t2 = phase->type( in(2) );
1.12 + if( t1 == Type::TOP ) return Type::TOP;
1.13 + if( t2 == Type::TOP ) return Type::TOP;
1.14 +
1.15 + // Either input is BOTTOM ==> the result is the local BOTTOM
1.16 + const Type *bot = bottom_type();
1.17 + if( (t1 == bot) || (t2 == bot) ||
1.18 + (t1 == Type::BOTTOM) || (t2 == Type::BOTTOM) )
1.19 + return bot;
1.20 +
1.21 + // It is not worth trying to constant fold this stuff!
1.22 + return TypeLong::LONG;
1.23 +}
1.24 +
1.25 +//=============================================================================
1.26 //------------------------------mul_ring---------------------------------------
1.27 // Supplied function returns the product of the inputs IN THE CURRENT RING.
1.28 // For the logical operations the ring's MUL is really a logical AND function.
