From a3b32f839b3d02f2551bc3cda9bc0567662bccd7 Mon Sep 17 00:00:00 2001 From: Andy Wingo Date: Sun, 7 Oct 2018 11:36:45 +0200 Subject: Add manual section on JIT compiler * doc/ref/vm.texi (Just-In-Time Native Code): New section. * doc/ref/compiler.texi (Extending the Compiler): Update. --- doc/ref/compiler.texi | 18 ++++++------------ 1 file changed, 6 insertions(+), 12 deletions(-) (limited to 'doc/ref/compiler.texi') diff --git a/doc/ref/compiler.texi b/doc/ref/compiler.texi index 3ec7cfd5d..7e1f29fcb 100644 --- a/doc/ref/compiler.texi +++ b/doc/ref/compiler.texi @@ -1372,20 +1372,14 @@ company, and in a good position. Guile's compiler needs your help. There are many possible avenues for improving Guile's compiler. Probably the most important improvement, speed-wise, will be some form -of native compilation, both just-in-time and ahead-of-time. This could -be done in many ways. Probably the easiest strategy would be to extend -the compiled procedure structure to include a pointer to a native code -vector, and compile from bytecode to native code at run-time after a -procedure is called a certain number of times. - -The name of the game is a profiling-based harvest of the low-hanging -fruit, running programs of interest under a system-level profiler and -determining which improvements would give the most bang for the buck. -It's really getting to the point though that native compilation is the -next step. +of optimized ahead-of-time native compilation with global register +allocation. A first pass could simply extend the compiler to also emit +machine code in addition to bytecode, pre-filling the corresponding JIT +data structures referenced by the @code{instrument-entry} bytecodes. +@xref{Instrumentation Instructions}. The compiler also needs help at the top end, enhancing the Scheme that -it knows to also understand R6RS, and adding new high-level compilers. +it knows to also understand R7RS, and adding new high-level compilers. We have JavaScript and Emacs Lisp mostly complete, but they could use some love; Lua would be nice as well, but whatever language it is that strikes your fancy would be welcome too. -- cgit v1.2.3