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IC: next steps (#16729)

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* IC: dead code elimination pass
* preparations for a different codegen strategy
* added documentation to the newly written code
* IC: backend code
* IC: backend adjustments
* optimized the compiler a bit
* IC: yet another massive refactoring
* fixes regressions
* cleanups
This commit is contained in:
Andreas Rumpf 2021-01-23 08:06:15 +01:00 • committed by GitHub
commit 8241e55023
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32 changed files with 729 additions and 323 deletions
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7
compiler/cgmeth.nim
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@ -107,11 +107,14 @@ proc attachDispatcher(s: PSym, dispatcher: PNode) =
s.ast[resultPos] = newNodeI(nkEmpty, s.info)
s.ast[dispatcherPos] = dispatcher
proc createDispatcher(s: PSym; idgen: IdGenerator): PSym =
proc createDispatcher(s: PSym; g: ModuleGraph; idgen: IdGenerator): PSym =
var disp = copySym(s, nextSymId(idgen))
incl(disp.flags, sfDispatcher)
excl(disp.flags, sfExported)
let old = disp.typ
disp.typ = copyType(disp.typ, nextTypeId(idgen), disp.typ.owner)
copyTypeProps(g, idgen.module, disp.typ, old)
# we can't inline the dispatcher itself (for now):
if disp.typ.callConv == ccInline: disp.typ.callConv = ccNimCall
disp.ast = copyTree(s.ast)
@ -177,7 +180,7 @@ proc methodDef*(g: ModuleGraph; idgen: IdGenerator; s: PSym, fromCache: bool) =
of Invalid:
if witness.isNil: witness = g.methods[i].methods[0]
# create a new dispatcher:
g.methods.add((methods: @[s], dispatcher: createDispatcher(s, idgen)))
g.methods.add((methods: @[s], dispatcher: createDispatcher(s, g, idgen)))
#echo "adding ", s.info
#if fromCache:
# internalError(s.info, "no method dispatcher found")