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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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8
compiler/seminst.nim
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@ -95,9 +95,9 @@ proc sameInstantiation(a, b: TInstantiation): bool =
ExactGcSafety}): return
result = true
proc genericCacheGet(genericSym: PSym, entry: TInstantiation;
proc genericCacheGet(g: ModuleGraph; genericSym: PSym, entry: TInstantiation;
id: CompilesId): PSym =
for inst in genericSym.procInstCache:
for inst in procInstCacheItems(g, genericSym):
if (inst.compilesId == 0 or inst.compilesId == id) and sameInstantiation(entry, inst[]):
return inst.sym
@ -369,7 +369,7 @@ proc generateInstance(c: PContext, fn: PSym, pt: TIdTable,
if tfTriggersCompileTime in result.typ.flags:
incl(result.flags, sfCompileTime)
n[genericParamsPos] = c.graph.emptyNode
var oldPrc = genericCacheGet(fn, entry[], c.compilesContextId)
var oldPrc = genericCacheGet(c.graph, fn, entry[], c.compilesContextId)
if oldPrc == nil:
# we MUST not add potentially wrong instantiations to the caching mechanism.
# This means recursive instantiations behave differently when in
@ -378,7 +378,7 @@ proc generateInstance(c: PContext, fn: PSym, pt: TIdTable,
#if c.compilesContextId == 0:
rawHandleSelf(c, result)
entry.compilesId = c.compilesContextId
fn.procInstCache.add(entry)
addToGenericProcCache(c.graph, c.module.position, fn, entry)
c.generics.add(makeInstPair(fn, entry))
if n[pragmasPos].kind != nkEmpty:
pragma(c, result, n[pragmasPos], allRoutinePragmas)