2 % (c) The GRASP/AQUA Project, Glasgow University, 1992-1996
4 \section[Unique]{The @Unique@ data type}
6 @Uniques@ are used to distinguish entities in the compiler (@Ids@,
7 @Classes@, etc.) from each other. Thus, @Uniques@ are the basic
8 comparison key in the compiler.
10 If there is any single operation that needs to be fast, it is @Unique@
11 comparison. Unsurprisingly, there is quite a bit of huff-and-puff
14 Some of the other hair in this code is to be able to use a
15 ``splittable @UniqueSupply@'' if requested/possible (not standard
20 Unique, Uniquable(..),
21 u2i, -- hack: used in UniqFM
23 pprUnique, pprUnique10, showUnique,
25 mkUnique, -- Used in UniqSupply
26 mkUniqueGrimily, -- Used in UniqSupply only!
28 incrUnique, -- Used for renumbering
29 initTyVarUnique, mkTyVarUnique,
32 -- now all the built-in Uniques (and functions to make them)
33 -- [the Oh-So-Wonderful Haskell module system wins again...]
39 getBuiltinUniques, mkBuiltinUnique,
40 mkPseudoUnique1, mkPseudoUnique2, mkPseudoUnique3,
42 absentErrorIdKey, -- alphabetical...
54 byteArrayPrimTyConKey,
67 enumFromThenClassOpKey,
68 enumFromThenToClassOpKey,
83 foreignObjPrimTyConKey,
89 fromIntegerClassOpKey,
90 fromRationalClassOpKey,
105 irrefutPatErrorIdKey,
117 mutableArrayPrimTyConKey,
118 mutableByteArrayPrimTyConKey,
120 noDefaultMethodErrorIdKey,
121 nonExhaustiveGuardsErrorIdKey,
122 nonExplicitMethodErrorIdKey,
144 return2GMPsDataConKey,
146 returnIntAndGMPDataConKey,
147 returnIntAndGMPTyConKey,
162 stablePtrPrimTyConKey,
164 stateAndAddrPrimDataConKey,
165 stateAndAddrPrimTyConKey,
166 stateAndArrayPrimDataConKey,
167 stateAndArrayPrimTyConKey,
168 stateAndByteArrayPrimDataConKey,
169 stateAndByteArrayPrimTyConKey,
170 stateAndCharPrimDataConKey,
171 stateAndCharPrimTyConKey,
172 stateAndDoublePrimDataConKey,
173 stateAndDoublePrimTyConKey,
174 stateAndFloatPrimDataConKey,
175 stateAndFloatPrimTyConKey,
176 stateAndForeignObjPrimDataConKey,
177 stateAndForeignObjPrimTyConKey,
178 stateAndIntPrimDataConKey,
179 stateAndIntPrimTyConKey,
180 stateAndMutableArrayPrimDataConKey,
181 stateAndMutableArrayPrimTyConKey,
182 stateAndMutableByteArrayPrimDataConKey,
183 stateAndMutableByteArrayPrimTyConKey,
184 stateAndPtrPrimDataConKey,
185 stateAndPtrPrimTyConKey,
186 stateAndStablePtrPrimDataConKey,
187 stateAndStablePtrPrimTyConKey,
188 stateAndSynchVarPrimDataConKey,
189 stateAndSynchVarPrimTyConKey,
190 stateAndWordPrimDataConKey,
191 stateAndWordPrimTyConKey,
197 synchVarPrimTyConKey,
203 unpackCStringAppendIdKey,
204 unpackCStringFoldrIdKey,
224 , mutableByteArrayTyConKey
228 #include "HsVersions.h"
230 import FastString ( uniqueOfFS )
233 import PrelBase ( Char(..), chr, ord )
239 %************************************************************************
241 \subsection[Unique-type]{@Unique@ type and operations}
243 %************************************************************************
245 The @Chars@ are ``tag letters'' that identify the @UniqueSupply@.
246 Fast comparison is everything on @Uniques@:
249 data Unique = MkUnique Int#
253 u2i :: Unique -> FAST_INT
257 Now come the functions which construct uniques from their pieces, and vice versa.
258 The stuff about unique *supplies* is handled further down this module.
261 mkUnique :: Char -> Int -> Unique -- Builds a unique from pieces
262 unpkUnique :: Unique -> (Char, Int) -- The reverse
264 mkUniqueGrimily :: Int# -> Unique -- A trap-door for UniqSupply
266 incrUnique :: Unique -> Unique
271 mkUniqueGrimily x = MkUnique x
273 incrUnique (MkUnique i) = MkUnique (i +# 1#)
275 -- pop the Char in the top 8 bits of the Unique(Supply)
277 -- No 64-bit bugs here, as long as we have at least 32 bits. --JSM
283 mkUnique (C# c) (I# i)
284 = MkUnique (w2i (((i2w (ord# c)) `shiftL#` (i2w_s 24#)) `or#` (i2w i)))
286 unpkUnique (MkUnique u)
288 tag = C# (chr# (w2i ((i2w u) `shiftr` (i2w_s 24#))))
289 i = I# (w2i ((i2w u) `and#` (i2w 16777215#){-``0x00ffffff''-}))
293 shiftr x y = shiftRA# x y
298 %************************************************************************
300 \subsection[Uniquable-class]{The @Uniquable@ class}
302 %************************************************************************
305 class Uniquable a where
306 uniqueOf :: a -> Unique
308 instance Uniquable FastString where
309 uniqueOf fs = mkUniqueGrimily (uniqueOfFS fs)
311 instance Uniquable Int where
312 uniqueOf (I# i#) = mkUniqueGrimily i#
316 %************************************************************************
318 \subsection[Unique-instances]{Instance declarations for @Unique@}
320 %************************************************************************
322 And the whole point (besides uniqueness) is fast equality. We don't
323 use `deriving' because we want {\em precise} control of ordering
324 (equality on @Uniques@ is v common).
327 eqUnique (MkUnique u1) (MkUnique u2) = u1 ==# u2
328 ltUnique (MkUnique u1) (MkUnique u2) = u1 <# u2
329 leUnique (MkUnique u1) (MkUnique u2) = u1 <=# u2
331 cmpUnique (MkUnique u1) (MkUnique u2)
332 = if u1 ==# u2 then EQ else if u1 <# u2 then LT else GT
334 instance Eq Unique where
335 a == b = eqUnique a b
336 a /= b = not (eqUnique a b)
338 instance Ord Unique where
340 a <= b = leUnique a b
341 a > b = not (leUnique a b)
342 a >= b = not (ltUnique a b)
343 compare a b = cmpUnique a b
346 instance Uniquable Unique where
350 We do sometimes make strings with @Uniques@ in them:
352 pprUnique, pprUnique10 :: Unique -> SDoc
355 = case unpkUnique uniq of
356 (tag, u) -> finish_ppr tag u (iToBase62 u)
358 pprUnique10 uniq -- in base-10, dudes
359 = case unpkUnique uniq of
360 (tag, u) -> finish_ppr tag u (int u)
362 finish_ppr 't' u pp_u | u < 26
363 = -- Special case to make v common tyvars, t1, t2, ...
364 -- come out as a, b, ... (shorter, easier to read)
365 char (chr (ord 'a' + u))
366 finish_ppr tag u pp_u = char tag <> pp_u
368 showUnique :: Unique -> String
369 showUnique uniq = showSDoc (pprUnique uniq)
371 instance Outputable Unique where
374 instance Text Unique where
375 showsPrec p uniq rest = showUnique uniq
378 %************************************************************************
380 \subsection[Utils-base62]{Base-62 numbers}
382 %************************************************************************
384 A character-stingy way to read/write numbers (notably Uniques).
385 The ``62-its'' are \tr{[0-9a-zA-Z]}. We don't handle negative Ints.
386 Code stolen from Lennart.
388 #if __GLASGOW_HASKELL__ == 201
389 # define BYTE_ARRAY GHCbase.ByteArray
390 # define RUN_ST GHCbase.runST
391 # define AND_THEN >>=
392 # define AND_THEN_ >>
393 # define RETURN return
394 #elif __GLASGOW_HASKELL__ >= 202
395 # define BYTE_ARRAY GlaExts.ByteArray
396 # define RUN_ST ST.runST
397 # define AND_THEN >>=
398 # define AND_THEN_ >>
399 # define RETURN return
401 # define BYTE_ARRAY _ByteArray
402 # define RUN_ST _runST
403 # define AND_THEN `thenStrictlyST`
404 # define AND_THEN_ `seqStrictlyST`
405 # define RETURN returnStrictlyST
408 iToBase62 :: Int -> SDoc
413 bytes = case chars62 of { BYTE_ARRAY bounds_who_needs_'em bytes -> bytes }
416 case (indexCharArray# bytes n#) of { c ->
419 case (quotRem n 62) of { (q, I# r#) ->
420 case (indexCharArray# bytes r#) of { c ->
421 (<>) (iToBase62 q) (char (C# c)) }}
423 -- keep this at top level! (bug on 94/10/24 WDP)
424 chars62 :: BYTE_ARRAY Int
427 newCharArray (0, 61) AND_THEN \ ch_array ->
428 fill_in ch_array 0 62 "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"
430 unsafeFreezeByteArray ch_array
433 fill_in ch_array i lim str
437 = writeCharArray ch_array i (str !! i) AND_THEN_
438 fill_in ch_array (i+1) lim str
441 %************************************************************************
443 \subsection[Uniques-prelude]{@Uniques@ for wired-in Prelude things}
445 %************************************************************************
447 Allocation of unique supply characters:
448 v,t,u : for renumbering value-, type- and usage- vars.
449 other a-z: lower case chars for unique supplies (see Main.lhs)
451 C-E: pseudo uniques (used in native-code generator)
452 _: unifiable tyvars (above)
453 1-8: prelude things below
456 mkAlphaTyVarUnique i = mkUnique '1' i
458 mkPreludeClassUnique i = mkUnique '2' i
459 mkPreludeTyConUnique i = mkUnique '3' i
460 mkTupleTyConUnique a = mkUnique '4' a
462 mkPreludeDataConUnique i = mkUnique '5' i -- must be alphabetic
463 mkTupleDataConUnique a = mkUnique '6' a -- ditto (*may* be used in C labels)
465 mkPrimOpIdUnique op = mkUnique '7' op
466 mkPreludeMiscIdUnique i = mkUnique '8' i
468 -- The "tyvar uniques" print specially nicely: a, b, c, etc.
469 -- See pprUnique for details
471 initTyVarUnique :: Unique
472 initTyVarUnique = mkUnique 't' 0
474 mkTyVarUnique :: Int -> Unique
475 mkTyVarUnique n = mkUnique 't' n
477 initTidyUniques :: (Unique, Unique) -- Global and local
478 initTidyUniques = (mkUnique 'g' 0, mkUnique 'x' 0)
480 mkPseudoUnique1, mkPseudoUnique2, mkPseudoUnique3,
481 mkBuiltinUnique :: Int -> Unique
483 mkBuiltinUnique i = mkUnique 'B' i
484 mkPseudoUnique1 i = mkUnique 'C' i -- used for uniqueOf on Regs
485 mkPseudoUnique2 i = mkUnique 'D' i -- ditto
486 mkPseudoUnique3 i = mkUnique 'E' i -- ditto
488 getBuiltinUniques :: Int -> [Unique]
489 getBuiltinUniques n = map (mkUnique 'B') [1 .. n]
492 %************************************************************************
494 \subsubsection[Uniques-prelude-Classes]{@Uniques@ for wired-in @Classes@}
496 %************************************************************************
499 boundedClassKey = mkPreludeClassUnique 1
500 enumClassKey = mkPreludeClassUnique 2
501 eqClassKey = mkPreludeClassUnique 3
502 evalClassKey = mkPreludeClassUnique 4
503 floatingClassKey = mkPreludeClassUnique 5
504 fractionalClassKey = mkPreludeClassUnique 6
505 integralClassKey = mkPreludeClassUnique 7
506 monadClassKey = mkPreludeClassUnique 8
507 monadZeroClassKey = mkPreludeClassUnique 9
508 monadPlusClassKey = mkPreludeClassUnique 10
509 functorClassKey = mkPreludeClassUnique 11
510 numClassKey = mkPreludeClassUnique 12
511 ordClassKey = mkPreludeClassUnique 13
512 readClassKey = mkPreludeClassUnique 14
513 realClassKey = mkPreludeClassUnique 15
514 realFloatClassKey = mkPreludeClassUnique 16
515 realFracClassKey = mkPreludeClassUnique 17
516 showClassKey = mkPreludeClassUnique 18
518 cCallableClassKey = mkPreludeClassUnique 19
519 cReturnableClassKey = mkPreludeClassUnique 20
521 ixClassKey = mkPreludeClassUnique 21
522 allClassKey = mkPreludeClassUnique 22 -- Pseudo class used for universal quantification
525 %************************************************************************
527 \subsubsection[Uniques-prelude-TyCons]{@Uniques@ for wired-in @TyCons@}
529 %************************************************************************
532 addrPrimTyConKey = mkPreludeTyConUnique 1
533 addrTyConKey = mkPreludeTyConUnique 2
534 arrayPrimTyConKey = mkPreludeTyConUnique 3
535 boolTyConKey = mkPreludeTyConUnique 4
536 byteArrayPrimTyConKey = mkPreludeTyConUnique 5
537 charPrimTyConKey = mkPreludeTyConUnique 7
538 charTyConKey = mkPreludeTyConUnique 8
539 doublePrimTyConKey = mkPreludeTyConUnique 9
540 doubleTyConKey = mkPreludeTyConUnique 10
541 floatPrimTyConKey = mkPreludeTyConUnique 11
542 floatTyConKey = mkPreludeTyConUnique 12
543 funTyConKey = mkPreludeTyConUnique 13
544 intPrimTyConKey = mkPreludeTyConUnique 14
545 intTyConKey = mkPreludeTyConUnique 15
546 integerTyConKey = mkPreludeTyConUnique 16
547 liftTyConKey = mkPreludeTyConUnique 17
548 listTyConKey = mkPreludeTyConUnique 18
549 foreignObjPrimTyConKey = mkPreludeTyConUnique 19
550 foreignObjTyConKey = mkPreludeTyConUnique 20
551 mutableArrayPrimTyConKey = mkPreludeTyConUnique 21
552 mutableByteArrayPrimTyConKey = mkPreludeTyConUnique 22
553 orderingTyConKey = mkPreludeTyConUnique 23
554 synchVarPrimTyConKey = mkPreludeTyConUnique 24
555 ratioTyConKey = mkPreludeTyConUnique 25
556 rationalTyConKey = mkPreludeTyConUnique 26
557 realWorldTyConKey = mkPreludeTyConUnique 27
558 return2GMPsTyConKey = mkPreludeTyConUnique 28
559 returnIntAndGMPTyConKey = mkPreludeTyConUnique 29
560 stablePtrPrimTyConKey = mkPreludeTyConUnique 30
561 stablePtrTyConKey = mkPreludeTyConUnique 31
562 stateAndAddrPrimTyConKey = mkPreludeTyConUnique 32
563 stateAndArrayPrimTyConKey = mkPreludeTyConUnique 33
564 stateAndByteArrayPrimTyConKey = mkPreludeTyConUnique 34
565 stateAndCharPrimTyConKey = mkPreludeTyConUnique 35
566 stateAndDoublePrimTyConKey = mkPreludeTyConUnique 36
567 stateAndFloatPrimTyConKey = mkPreludeTyConUnique 37
568 stateAndIntPrimTyConKey = mkPreludeTyConUnique 38
569 stateAndForeignObjPrimTyConKey = mkPreludeTyConUnique 39
570 stateAndMutableArrayPrimTyConKey = mkPreludeTyConUnique 40
571 stateAndMutableByteArrayPrimTyConKey = mkPreludeTyConUnique 41
572 stateAndSynchVarPrimTyConKey = mkPreludeTyConUnique 42
573 stateAndPtrPrimTyConKey = mkPreludeTyConUnique 43
574 stateAndStablePtrPrimTyConKey = mkPreludeTyConUnique 44
575 stateAndWordPrimTyConKey = mkPreludeTyConUnique 45
576 statePrimTyConKey = mkPreludeTyConUnique 46
577 stateTyConKey = mkPreludeTyConUnique 47
578 mutableByteArrayTyConKey = mkPreludeTyConUnique 48
579 stTyConKey = mkPreludeTyConUnique 49
580 stRetTyConKey = mkPreludeTyConUnique 50
581 ioTyConKey = mkPreludeTyConUnique 51
582 ioResultTyConKey = mkPreludeTyConUnique 52
583 byteArrayTyConKey = mkPreludeTyConUnique 53
584 wordPrimTyConKey = mkPreludeTyConUnique 54
585 wordTyConKey = mkPreludeTyConUnique 55
586 voidTyConKey = mkPreludeTyConUnique 56
589 %************************************************************************
591 \subsubsection[Uniques-prelude-DataCons]{@Uniques@ for wired-in @DataCons@}
593 %************************************************************************
596 addrDataConKey = mkPreludeDataConUnique 1
597 buildDataConKey = mkPreludeDataConUnique 2
598 charDataConKey = mkPreludeDataConUnique 4
599 consDataConKey = mkPreludeDataConUnique 5
600 doubleDataConKey = mkPreludeDataConUnique 6
601 eqDataConKey = mkPreludeDataConUnique 7
602 falseDataConKey = mkPreludeDataConUnique 8
603 floatDataConKey = mkPreludeDataConUnique 9
604 gtDataConKey = mkPreludeDataConUnique 10
605 intDataConKey = mkPreludeDataConUnique 11
606 integerDataConKey = mkPreludeDataConUnique 12
607 liftDataConKey = mkPreludeDataConUnique 13
608 ltDataConKey = mkPreludeDataConUnique 14
609 foreignObjDataConKey = mkPreludeDataConUnique 15
610 nilDataConKey = mkPreludeDataConUnique 18
611 ratioDataConKey = mkPreludeDataConUnique 21
612 return2GMPsDataConKey = mkPreludeDataConUnique 22
613 returnIntAndGMPDataConKey = mkPreludeDataConUnique 23
614 stablePtrDataConKey = mkPreludeDataConUnique 24
615 stateAndAddrPrimDataConKey = mkPreludeDataConUnique 25
616 stateAndArrayPrimDataConKey = mkPreludeDataConUnique 26
617 stateAndByteArrayPrimDataConKey = mkPreludeDataConUnique 27
618 stateAndCharPrimDataConKey = mkPreludeDataConUnique 28
619 stateAndDoublePrimDataConKey = mkPreludeDataConUnique 29
620 stateAndFloatPrimDataConKey = mkPreludeDataConUnique 30
621 stateAndIntPrimDataConKey = mkPreludeDataConUnique 31
622 stateAndForeignObjPrimDataConKey = mkPreludeDataConUnique 32
623 stateAndMutableArrayPrimDataConKey = mkPreludeDataConUnique 33
624 stateAndMutableByteArrayPrimDataConKey = mkPreludeDataConUnique 34
625 stateAndSynchVarPrimDataConKey = mkPreludeDataConUnique 35
626 stateAndPtrPrimDataConKey = mkPreludeDataConUnique 36
627 stateAndStablePtrPrimDataConKey = mkPreludeDataConUnique 37
628 stateAndWordPrimDataConKey = mkPreludeDataConUnique 38
629 stateDataConKey = mkPreludeDataConUnique 39
630 trueDataConKey = mkPreludeDataConUnique 40
631 wordDataConKey = mkPreludeDataConUnique 41
632 stDataConKey = mkPreludeDataConUnique 42
633 stRetDataConKey = mkPreludeDataConUnique 43
634 ioDataConKey = mkPreludeDataConUnique 44
635 ioOkDataConKey = mkPreludeDataConUnique 45
636 ioFailDataConKey = mkPreludeDataConUnique 46
639 %************************************************************************
641 \subsubsection[Uniques-prelude-Ids]{@Uniques@ for wired-in @Ids@ (except @DataCons@)}
643 %************************************************************************
646 absentErrorIdKey = mkPreludeMiscIdUnique 1
647 andandIdKey = mkPreludeMiscIdUnique 2
648 appendIdKey = mkPreludeMiscIdUnique 3
649 augmentIdKey = mkPreludeMiscIdUnique 4
650 buildIdKey = mkPreludeMiscIdUnique 5
651 composeIdKey = mkPreludeMiscIdUnique 6
652 errorIdKey = mkPreludeMiscIdUnique 7
653 foldlIdKey = mkPreludeMiscIdUnique 8
654 foldrIdKey = mkPreludeMiscIdUnique 9
655 forkIdKey = mkPreludeMiscIdUnique 10
656 int2IntegerIdKey = mkPreludeMiscIdUnique 11
657 integerMinusOneIdKey = mkPreludeMiscIdUnique 12
658 integerPlusOneIdKey = mkPreludeMiscIdUnique 13
659 integerPlusTwoIdKey = mkPreludeMiscIdUnique 14
660 integerZeroIdKey = mkPreludeMiscIdUnique 15
661 irrefutPatErrorIdKey = mkPreludeMiscIdUnique 16
662 lexIdKey = mkPreludeMiscIdUnique 17
663 noDefaultMethodErrorIdKey = mkPreludeMiscIdUnique 20
664 nonExhaustiveGuardsErrorIdKey = mkPreludeMiscIdUnique 21
665 nonExplicitMethodErrorIdKey = mkPreludeMiscIdUnique 22
666 notIdKey = mkPreludeMiscIdUnique 23
667 packCStringIdKey = mkPreludeMiscIdUnique 24
668 parErrorIdKey = mkPreludeMiscIdUnique 25
669 parIdKey = mkPreludeMiscIdUnique 26
670 patErrorIdKey = mkPreludeMiscIdUnique 27
671 readParenIdKey = mkPreludeMiscIdUnique 28
672 realWorldPrimIdKey = mkPreludeMiscIdUnique 29
673 recConErrorIdKey = mkPreludeMiscIdUnique 30
674 recUpdErrorIdKey = mkPreludeMiscIdUnique 31
675 seqIdKey = mkPreludeMiscIdUnique 33
676 showParenIdKey = mkPreludeMiscIdUnique 34
677 showSpaceIdKey = mkPreludeMiscIdUnique 35
678 showStringIdKey = mkPreludeMiscIdUnique 36
679 traceIdKey = mkPreludeMiscIdUnique 37
680 unpackCString2IdKey = mkPreludeMiscIdUnique 38
681 unpackCStringAppendIdKey = mkPreludeMiscIdUnique 39
682 unpackCStringFoldrIdKey = mkPreludeMiscIdUnique 40
683 unpackCStringIdKey = mkPreludeMiscIdUnique 41
684 voidIdKey = mkPreludeMiscIdUnique 42
685 ushowListIdKey = mkPreludeMiscIdUnique 43
686 ureadListIdKey = mkPreludeMiscIdUnique 44
688 copyableIdKey = mkPreludeMiscIdUnique 45
689 noFollowIdKey = mkPreludeMiscIdUnique 46
690 parAtAbsIdKey = mkPreludeMiscIdUnique 47
691 parAtForNowIdKey = mkPreludeMiscIdUnique 48
692 parAtIdKey = mkPreludeMiscIdUnique 49
693 parAtRelIdKey = mkPreludeMiscIdUnique 50
694 parGlobalIdKey = mkPreludeMiscIdUnique 51
695 parLocalIdKey = mkPreludeMiscIdUnique 52
698 Certain class operations from Prelude classes. They get
699 their own uniques so we can look them up easily when we want
700 to conjure them up during type checking.
702 fromIntClassOpKey = mkPreludeMiscIdUnique 53
703 fromIntegerClassOpKey = mkPreludeMiscIdUnique 54
704 minusClassOpKey = mkPreludeMiscIdUnique 55
705 fromRationalClassOpKey = mkPreludeMiscIdUnique 56
706 enumFromClassOpKey = mkPreludeMiscIdUnique 57
707 enumFromThenClassOpKey = mkPreludeMiscIdUnique 58
708 enumFromToClassOpKey = mkPreludeMiscIdUnique 59
709 enumFromThenToClassOpKey= mkPreludeMiscIdUnique 60
710 eqClassOpKey = mkPreludeMiscIdUnique 61
711 geClassOpKey = mkPreludeMiscIdUnique 62
712 zeroClassOpKey = mkPreludeMiscIdUnique 63
713 thenMClassOpKey = mkPreludeMiscIdUnique 64 -- (>>=)
714 unboundKey = mkPreludeMiscIdUnique 65 -- Just a place holder for unbound
715 -- variables produced by the renamer
716 fromEnumClassOpKey = mkPreludeMiscIdUnique 66
718 mainKey = mkPreludeMiscIdUnique 67
719 returnMClassOpKey = mkPreludeMiscIdUnique 68
720 otherwiseIdKey = mkPreludeMiscIdUnique 69
721 toEnumClassOpKey = mkPreludeMiscIdUnique 70