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mul_ints
2011 Jun 28
2
[LLVMdev] Box removal
In the creation of dynamic languages we often have to box values together.
For instance, take the following expression:
IntObj c = sqrt((a*a)+(b*b));
Here, most likely, a bytecode interpreter would execute this as
"mul_ints", "add_ints", "sqrt", etc. Inside these primitive functions
we would have to unwrap our IntObj types, add the values, allocate a
new object and return that to the function. In the above example, we
could probably expect around 4 allocations, and 7 unboxing operations.
Now...