explicit ID generation for easier IC (#15559)

* refactoring: idents don't need inheritance
* refactoring: adding an IdGenerator (part 1)
* refactoring: adding an IdGenerator (part 2)
* refactoring: adding an IdGenerator (part 3)
* refactoring: adding an IdGenerator (part 4)
* refactoring: adding an IdGenerator (part 5)
* refactoring: adding an IdGenerator (part 5)
* IdGenerator must be a ref type; hello world works again
* make bootstrapping work again
* progress: add back the 'exactReplica' ideas
* added back the missing exactReplica hacks
* make tcompilerapi work again
* make important packages green
* attempt to fix the build for 32 bit machines (probably need a better solution here)

1 files changed, 5 insertions, 2 deletions

diff --git a/compiler/modulegraphs.nim b/compiler/modulegraphs.nim
index da2a222a4..9e7a487cf 100644
--- a/compiler/modulegraphs.nim
+++ b/compiler/modulegraphs.nim
@@ -74,11 +74,13 @@ type
     globalDestructors*: seq[PNode]
     strongSemCheck*: proc (graph: ModuleGraph; owner: PSym; body: PNode) {.nimcall.}
     compatibleProps*: proc (graph: ModuleGraph; formal, actual: PType): bool {.nimcall.}
+    idgen*: IdGenerator
 
   TPassContext* = object of RootObj # the pass's context
+    idgen*: IdGenerator
   PPassContext* = ref TPassContext
 
-  TPassOpen* = proc (graph: ModuleGraph; module: PSym): PPassContext {.nimcall.}
+  TPassOpen* = proc (graph: ModuleGraph; module: PSym; idgen: IdGenerator): PPassContext {.nimcall.}
   TPassClose* = proc (graph: ModuleGraph; p: PPassContext, n: PNode): PNode {.nimcall.}
   TPassProcess* = proc (p: PPassContext, topLevelStmt: PNode): PNode {.nimcall.}
 
@@ -165,12 +167,13 @@ proc stopCompile*(g: ModuleGraph): bool {.inline.} =
   result = g.doStopCompile != nil and g.doStopCompile()
 
 proc createMagic*(g: ModuleGraph; name: string, m: TMagic): PSym =
-  result = newSym(skProc, getIdent(g.cache, name), nil, unknownLineInfo, {})
+  result = newSym(skProc, getIdent(g.cache, name), nextId(g.idgen), nil, unknownLineInfo, {})
   result.magic = m
   result.flags = {sfNeverRaises}
 
 proc newModuleGraph*(cache: IdentCache; config: ConfigRef): ModuleGraph =
   result = ModuleGraph()
+  result.idgen = IdGenerator(module: -1'i32, item: 0'i32)
   initStrTable(result.packageSyms)
   result.deps = initIntSet()
   result.importDeps = initTable[FileIndex, seq[FileIndex]]()