Clasp 0.4 -- Lisp Over LLVM -- Generates Code 200x Faster
Written by Michael Larabel in LLVM on 23 November 2015 at 07:49 AM EST. 17 Comments
Clasp is a Common Lisp compiler based on LLVM that also provides seamless interoperation with C++ libraries. Clasp 0.4 has been released with some big improvements.

Clasp 0.4 reportedly is capable of generating "200x faster code than previously" while having a new, optimizing/inlining compiler called cclasp. Clasp 0.4 also has fixes, the clbind library allows programmers to expose external C++ libraries, and there have been many bug fixes and stability improvements for this LLVM-based compiler.

More details via the Clasp blog.
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