On Sunday, 15 May 2016 at 10:29:21 UTC, Martin Nowak wrote:
On 05/10/2016 08:45 AM, Jacob Carlborg wrote:


I was listening to a discussion Don and Daniel had about the current implementation of CTFE. They talked about using a byte code interpreter. Even implementing a really crappy byte code interpreter would be a huge improvement.

No need for a byte-code interpreter, it mostly just adds overhead and complexity over an AST interpreter. If you want to go really fast you need some sort of JIT anyhow, but a proper interpreter will be orders of mangnitude faster than the current implementation.

I might refer you to
http://dconf.org/2013/talks/chevalier_boisvert.pdf
page 59 ff.

Correct. A ByteCode Interpreter will add even more implementation overhead, and the benefit is only realizable if the ByteCode is a standard format that can be read other backends such as a jit.

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