[bitc-dev] Random thought about closures

Jonathan S. Shapiro shap at eros-os.com
Sat Apr 25 10:01:17 EDT 2009


A blindingly obvious thought just occurred to me, and I want to write it
down before I forget: there is no reason that procedures expecting a closure
pointer need to honor the standard calling convention.

Such a procedure can only be called in two ways:

1. Through a statically resolved reference from a bitc call site.
2. From it's trampoline, which is actuall a degenerate case of (2).

So what this means is that the entire calling convention problem for
closures is entirely a consequence of generating C code, and the whole issue
will go away when native code generation is used.

Yet *another* reason not to generate C code for this kind of thing. Sigh.
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