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phase name id description
---------- -- -----------
parser 1 parse source into ASTs, perform simple desugaring
namer 2 resolve names, attach symbols to named trees
packageobjects 3 load package objects
typer 4 the meat and potatoes: type the trees
extmethods 5 add extension methods for inline classes
superaccessors 6 add super accessors in traits and nested classes
pickler 7 serialize symbol tables
refchecks 8 reference/override checking, translate nested objects
uncurry 9 uncurry, translate function values to anonymous classes
tailcalls 10 replace tail calls by jumps
specialize 11 @specialized-driven class and method specialization
explicitouter 12 this refs to outer pointers, translate patterns
erasure 13 erase types, add interfaces for traits
lazyvals 14 allocate bitmaps, translate lazy vals into lazified defs
lambdalift 15 move nested functions to top level
constructors 16 move field definitions into constructors
flatten 17 eliminate inner classes
mixin 18 mixin composition
cleanup 19 platform-specific cleanups, generate reflective calls
icode 20 generate portable intermediate code
inliner 21 optimization: do inlining
inlineExceptionHandlers 22 optimization: inline exception handlers
closelim 23 optimization: eliminate uncalled closures
dce 24 optimization: eliminate dead code
jvm 25 generate JVM bytecode
terminal 26 The last phase in the compiler chain
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