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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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29
compiler/ccgstmts.nim
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@ -1530,20 +1530,21 @@ proc genDiscriminantCheck(p: BProc, a, tmp: TLoc, objtype: PType,
[rdLoc(a), rdLoc(tmp), discriminatorTableName(p.module, t, field),
intLiteral(toInt64(lengthOrd(p.config, field.typ))+1)])
proc genCaseObjDiscMapping(p: BProc, e: PNode, t: PType, field: PSym; d: var TLoc) =
const ObjDiscMappingProcSlot = -5
var theProc: PSym = nil
for idx, p in items(t.methods):
if idx == ObjDiscMappingProcSlot:
theProc = p
break
if theProc == nil:
theProc = genCaseObjDiscMapping(t, field, e.info, p.module.g.graph, p.module.idgen)
t.methods.add((ObjDiscMappingProcSlot, theProc))
var call = newNodeIT(nkCall, e.info, getSysType(p.module.g.graph, e.info, tyUInt8))
call.add newSymNode(theProc)
call.add e
expr(p, call, d)
when false:
proc genCaseObjDiscMapping(p: BProc, e: PNode, t: PType, field: PSym; d: var TLoc) =
const ObjDiscMappingProcSlot = -5
var theProc: PSym = nil
for idx, p in items(t.methods):
if idx == ObjDiscMappingProcSlot:
theProc = p
break
if theProc == nil:
theProc = genCaseObjDiscMapping(t, field, e.info, p.module.g.graph, p.module.idgen)
t.methods.add((ObjDiscMappingProcSlot, theProc))
var call = newNodeIT(nkCall, e.info, getSysType(p.module.g.graph, e.info, tyUInt8))
call.add newSymNode(theProc)
call.add e
expr(p, call, d)
proc asgnFieldDiscriminant(p: BProc, e: PNode) =
var a, tmp: TLoc