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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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GPG key ID: 4AEE18F83AFDEB23
32 changed files with 729 additions and 323 deletions
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23
compiler/semstmts.nim
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@ -1693,12 +1693,13 @@ proc bindTypeHook(c: PContext; s: PSym; n: PNode; op: TTypeAttachedOp) =
else: break
if obj.kind in {tyObject, tyDistinct, tySequence, tyString}:
obj = canonType(c, obj)
if obj.attachedOps[op] == s:
let ao = getAttachedOp(c.graph, obj, op)
if ao == s:
discard "forward declared destructor"
elif obj.attachedOps[op].isNil and tfCheckedForDestructor notin obj.flags:
obj.attachedOps[op] = s
elif ao.isNil and tfCheckedForDestructor notin obj.flags:
setAttachedOp(c.graph, c.module.position, obj, op, s)
else:
prevDestructor(c, obj.attachedOps[op], obj, n.info)
prevDestructor(c, ao, obj, n.info)
noError = true
if obj.owner.getModule != s.getModule:
localError(c.config, n.info, errGenerated,
@ -1726,7 +1727,8 @@ proc semOverride(c: PContext, s: PSym, n: PNode) =
elif t.kind == tyGenericInvocation: t = t[0]
else: break
if t.kind in {tyObject, tyDistinct, tyEnum, tySequence, tyString}:
if t.attachedOps[attachedDeepCopy].isNil: t.attachedOps[attachedDeepCopy] = s
if getAttachedOp(c.graph, t, attachedDeepCopy).isNil:
setAttachedOp(c.graph, c.module.position, t, attachedDeepCopy, s)
else:
localError(c.config, n.info, errGenerated,
"cannot bind another 'deepCopy' to: " & typeToString(t))
@ -1766,12 +1768,13 @@ proc semOverride(c: PContext, s: PSym, n: PNode) =
obj = canonType(c, obj)
#echo "ATTACHING TO ", obj.id, " ", s.name.s, " ", cast[int](obj)
let k = if name == "=" or name == "=copy": attachedAsgn else: attachedSink
if obj.attachedOps[k] == s:
let ao = getAttachedOp(c.graph, obj, k)
if ao == s:
discard "forward declared op"
elif obj.attachedOps[k].isNil and tfCheckedForDestructor notin obj.flags:
obj.attachedOps[k] = s
elif ao.isNil and tfCheckedForDestructor notin obj.flags:
setAttachedOp(c.graph, c.module.position, obj, k, s)
else:
prevDestructor(c, obj.attachedOps[k], obj, n.info)
prevDestructor(c, ao, obj, n.info)
if obj.owner.getModule != s.getModule:
localError(c.config, n.info, errGenerated,
"type bound operation `" & name & "` can be defined only in the same module with its type (" & obj.typeToString() & ")")
@ -1827,7 +1830,7 @@ proc semMethodPrototype(c: PContext; s: PSym; n: PNode) =
tyAlias, tySink, tyOwned})
if x.kind == tyObject and t.len-1 == n[genericParamsPos].len:
foundObj = true
x.methods.add((col,s))
addMethodToGeneric(c.graph, c.module.position, x, col, s)
message(c.config, n.info, warnDeprecated, "generic methods are deprecated")
#if not foundObj:
# message(c.config, n.info, warnDeprecated, "generic method not attachable to object type is deprecated")