* module/language/tree-il/compile-bytecode.scm (emit-box-set!): Fix to
reference by SCM, not word.
(emit-box-ref): New helper.
(emit-cached-module-box, emit-cached-toplevel-box, emit-toplevel-box):
Add bound? arg. Before these could produce #f instead of a variable,
and unbound variable errors weren't any good as they didn't have the
variable name.
(compile-closure): Use more box-ref and box-set!. Pass bound? arg to
the helpers.
* module/language/cps/compile-bytecode.scm (compile-bytecode):
* module/language/tree-il/compile-bytecode.scm (compile-bytecode):
* module/language/tree-il/compile-cps.scm (compile-cps): Rely on
compiler to lower incoming term already.
* module/language/tree-il/optimize.scm (make-lowerer): New procedure.
* module/system/base/compile.scm (compute-lowerer): New procedure,
replaceing add-default-optimizations.
(compute-compiler): Lower before running compiler.
* module/system/base/language.scm (<language>): Change
optimizations-for-level field to "lowerer".
* module/scripts/compile.scm (%options, compile): Parse -O0, -O1 and so
on to #:optimization-level instead of expanding to all the
optimization flags.
* module/language/cps/optimize.scm (lower-cps): Move here from
compile-bytecode.scm.
(make-cps-lowerer): New function.
* module/language/cps/spec.scm (cps): Declare lowerer.
* module/system/base/compile.scm (compute-analyzer): Compute analyzer to
run on expressions before the compiler runs.
(add-default-optimizations): Flesh out; still a stub.a
(read-and-compile, compile, compile-and-load, compile-file): Default
warning and optimization levels.
(default-warning-level): New parameter, defaulting to 1.
(default-optimization-level): New parameter, defaulting to 2.
Currently unused.
* module/system/base/language.scm (<language>): Add
optimizations-for-level and analyzer fields.
* module/language/tree-il/compile-bytecode.scm (compile-bytecode):
* module/language/tree-il/compile-cps.scm (optimize-tree-il): No need to
run warnings passes here; compilers infrastructure will run them.
* module/language/tree-il/spec.scm (tree-il): Define make-analyzer as
analyzer.
* module/language/tree-il/analyze.scm (make-analyzer): New exported
procedure.
(%warning-passes): New private variable.
* .dir-locals.el: Add with-test-prefix/c&e indent mode.
* test-suite/tests/cross-compilation.test:
* test-suite/tests/optargs.test:
* test-suite/tests/tree-il.test: Adjust to disable default warnings.
* module/language/tree-il/compile-bytecode.scm (canonicalize): Don't add
an extra false? around predicates.
(compile-closure): Fix predicate comparison instructions.
* module/language/tree-il/compile-bytecode.scm (compile-closure): We can
emit the precise move sequence and just do a reset-frame once, so go
ahead and do that.
* module/language/tree-il/compile-bytecode.scm (compile-closure):
Provide names for locals, including the closure. Fix emission of
primitives with immediate args.
