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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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12
compiler/sempass2.nim
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@ -723,7 +723,7 @@ proc checkLe(c: PEffects; a, b: PNode) =
proc checkBounds(c: PEffects; arr, idx: PNode) =
checkLe(c, lowBound(c.config, arr), idx)
checkLe(c, idx, highBound(c.config, arr, c.guards.o))
checkLe(c, idx, highBound(c.config, arr, c.guards.g.operators))
proc checkRange(c: PEffects; value: PNode; typ: PType) =
let t = typ.skipTypes(abstractInst - {tyRange})
@ -818,9 +818,9 @@ proc trackCall(tracked: PEffects; n: PNode) =
if opKind != -1:
# rebind type bounds operations after createTypeBoundOps call
let t = n[1].typ.skipTypes({tyAlias, tyVar})
if a.sym != t.attachedOps[TTypeAttachedOp(opKind)]:
if a.sym != getAttachedOp(tracked.graph, t, TTypeAttachedOp(opKind)):
createTypeBoundOps(tracked, t, n.info)
let op = t.attachedOps[TTypeAttachedOp(opKind)]
let op = getAttachedOp(tracked.graph, t, TTypeAttachedOp(opKind))
if op != nil:
n[0].sym = op
@ -1236,7 +1236,7 @@ proc initEffects(g: ModuleGraph; effects: PNode; s: PSym; t: var TEffects; c: PC
t.ownerModule = s.getModule
t.init = @[]
t.guards.s = @[]
t.guards.o = initOperators(g)
t.guards.g = g
when defined(drnim):
t.currOptions = g.config.options + s.options - {optStaticBoundsCheck}
else:
@ -1310,7 +1310,7 @@ proc trackProc*(c: PContext; s: PSym, body: PNode) =
var goals: set[Goal] = {}
if strictFuncs in c.features: goals.incl constParameters
if views in c.features: goals.incl borrowChecking
var partitions = computeGraphPartitions(s, body, g.config, goals)
var partitions = computeGraphPartitions(s, body, g, goals)
if not t.hasSideEffect and t.hasDangerousAssign:
t.hasSideEffect = varpartitions.hasSideEffect(partitions, mutationInfo)
if views in c.features:
@ -1344,7 +1344,7 @@ proc trackProc*(c: PContext; s: PSym, body: PNode) =
when defined(useDfa):
if s.name.s == "testp":
dataflowAnalysis(s, body)
when false: trackWrites(s, body)
if strictNotNil in c.features and s.kind == skProc:
checkNil(s, body, g.config, c.idgen)