Started at 349,880,038 allocations and 42s
- Switched to making `Symbol` in GOOS be a "fixed type", just a wrapper
around a `const char*` pointing to the string in the symbol table. This
is a step toward making a lot of things better, but by itself not a huge
improvement. Some things may be worse due to more temp `std::string`
allocations, but one day all these can be removed. On linux it saved
allocations (347,685,429), and saved a second or two (41 s).
- cache `#t` and `#f` in interpreter, better lookup for special
forms/builtins (hashtable of pointers instead of strings, vector for the
small special form list). Dropped time to 38s.
- special-case in quasiquote when splicing is the last thing in a list.
Allocation dropped to 340,603,082
- custom hash table for environment lookups (lexical vars). Dropped to
36s and 314,637,194
- less allocation in `read_list` 311,613,616. Time about the same.
- `let` and `let*` in Interpreter.cpp 191,988,083, time down to 28s.
Slight change to float divide operations (again). Now it only turns into
inverse multiplication if the float is a power of 2 (positive or
negative). Non-zero immediate divisors will be compiled as regular float
divisions but will forgo the extra branches and checks for divide by
zero.
Also fixes#2584
* clean up
* before int to float stuff
* before trying to eliminate the separate read and write maps
* partial fix for register issues
* add missing include
* add pretty printing to goos form
* temp
* fix format
* fix format
* fix windows build
* again
* windows
* Revert "windows"
This reverts commit b7d448e733.
* windows again
* give up and just add a getter function
