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20 hours ago •
scala
scala
Investigate whether or not scalac's AOT inlining hurts our warm up
Flight Recorder logs unusually long JIT compilation times. For instance scala.reflect.internal.TreeGen#mkTemplate reports 680ms to generated 192k of code.
The method itself isn't that big, but it uses a bunch of combinators that scalac -opt inlines.
Are we paying a price for this indiscriminate inlining? More code to compile could be slowing down our warm up; having too much native code could be hurting our instruction cache hit rate, etc.
- [ ] Compare the hot performance and warmup time of builds with/without the Scala inliner enabled, with both Graal EE and HotSpot C2 JITs.
- [ ] Measure (somehow) the total size of the native code under these modes, and instruction cache hit ratios
/cc @lrytz @vjovanov
def mkTemplate(parents: List[Tree], self: ValDef, constrMods: Modifiers,
vparamss: List[List[ValDef]], body: List[Tree], superPos: Position = NoPosition): Template = {
/* Add constructor to template */
// create parameters for <init> as synthetic trees.
var vparamss1 = mmap(vparamss) { vd =>
val param = atPos(vd.pos.makeTransparent) {
val mods = Modifiers(vd.mods.flags & (IMPLICIT | DEFAULTPARAM | BYNAMEPARAM) | PARAM | PARAMACCESSOR)
ValDef(mods withAnnotations vd.mods.annotations, vd.name, vd.tpt.duplicate, duplicateAndKeepPositions(vd.rhs))
}
param
}
val (edefs, rest) = body span treeInfo.isEarlyDef
val (evdefs, etdefs) = edefs partition treeInfo.isEarlyValDef
val gvdefs = evdefs map {
case vdef @ ValDef(_, _, tpt, _) =>
copyValDef(vdef)(
// atPos for the new tpt is necessary, since the original tpt might have no position
// (when missing type annotation for ValDef for example), so even though setOriginal modifies the
// position of TypeTree, it would still be NoPosition. That's what the author meant.
tpt = atPos(vdef.pos.focus)(TypeTree() setOriginal tpt setPos tpt.pos.focus),
rhs = EmptyTree
)
}
val lvdefs = evdefs collect { case vdef: ValDef => copyValDef(vdef)(mods = vdef.mods | PRESUPER) }
val constr = {
if (constrMods.isTrait) {
if (body forall treeInfo.isInterfaceMember) None
else Some(
atPos(wrappingPos(superPos, lvdefs)) (
DefDef(NoMods, nme.MIXIN_CONSTRUCTOR, Nil, ListOfNil, TypeTree(), Block(lvdefs, mkLiteralUnit))))
}
else {
// convert (implicit ... ) to ()(implicit ... ) if it's the only parameter section
if (vparamss1.isEmpty || !vparamss1.head.isEmpty && vparamss1.head.head.mods.isImplicit)
vparamss1 = List() :: vparamss1
val superCall = pendingSuperCall // we can't know in advance which of the parents will end up as a superclass
// this requires knowing which of the parents is a type macro and which is not
// and that's something that cannot be found out before typer
// (the type macros aren't in the trunk yet, but there is a plan for them to land there soon)
// this means that we don't know what will be the arguments of the super call
// therefore here we emit a dummy which gets populated when the template is named and typechecked
Some(
atPos(wrappingPos(superPos, lvdefs ::: vparamss1.flatten).makeTransparent) (
DefDef(constrMods, nme.CONSTRUCTOR, List(), vparamss1, TypeTree(), Block(lvdefs ::: List(superCall), mkLiteralUnit))))
}
}
constr foreach (ensureNonOverlapping(_, parents ::: gvdefs, focus = false))
// Field definitions for the class - remove defaults.
val fieldDefs = vparamss.flatten map (vd => {
val field = copyValDef(vd)(mods = vd.mods &~ DEFAULTPARAM, rhs = EmptyTree)
// Prevent overlapping of `field` end's position with default argument's start position.
// This is needed for `Positions.Locator(pos).traverse` to return the correct tree when
// the `pos` is a point position with all its values equal to `vd.rhs.pos.start`.
if(field.pos.isRange && vd.rhs.pos.isRange) field.pos = field.pos.withEnd(vd.rhs.pos.start - 1)
field
})
global.Template(parents, self, gvdefs ::: fieldDefs ::: constr ++: etdefs ::: rest)
}
scala> :javap -c scala.reflect.internal.TreeGen#mkTemplate
public scala.reflect.internal.Trees$Template mkTemplate(scala.collection.immutable.List<scala.reflect.internal.Trees$Tree>, scala.reflect.internal.Trees$ValDef, scala.reflect.internal.Trees$Modifiers, scala.collection.immutable.List<scala.collection.immutable.List<scala.reflect.internal.Trees$ValDef>>, scala.collection.immutable.List<scala.reflect.internal.Trees$Tree>, scala.reflect.internal.util.Position);
Code:
0: aload_0
1: invokevirtual #333 // Method global:()Lscala/reflect/internal/SymbolTable;
4: aload_0
5: invokedynamic #1172, 0 // InvokeDynamic #1:apply:(Lscala/reflect/internal/TreeGen;)Lscala/Function1;
10: astore 43
12: ifnonnull 17
15: aconst_null
16: athrow
17: aload 4
19: aload 43
21: invokedynamic #1184, 0 // InvokeDynamic #2:apply:(Lscala/Function1;)Lscala/Function1;
26: getstatic #419 // Field scala/collection/immutable/List$.MODULE$:Lscala/collection/immutable/List$;
29: invokevirtual #423 // Method scala/collection/immutable/List$.canBuildFrom:()Lscala/collection/generic/CanBuildFrom;
32: astore 45
34: astore 44
36: ifnonnull 41
39: aconst_null
40: athrow
41: aload 45
43: getstatic #419 // Field scala/collection/immutable/List$.MODULE$:Lscala/collection/immutable/List$;
46: invokevirtual #883 // Method scala/collection/immutable/List$.ReusableCBF:()Lscala/collection/generic/GenTraversableFactory$GenericCanBuildFrom;
49: if_acmpne 179
52: aload 4
54: getstatic #455 // Field scala/collection/immutable/Nil$.MODULE$:Lscala/collection/immutable/Nil$;
57: if_acmpne 68
60: getstatic #455 // Field scala/collection/immutable/Nil$.MODULE$:Lscala/collection/immutable/Nil$;
63: astore 50
65: goto 190
68: new #468 // class scala/collection/immutable/$colon$colon
71: dup
72: aload 4
74: invokevirtual #472 // Method scala/collection/immutable/List.head:()Ljava/lang/Object;
77: checkcast #398 // class scala/collection/immutable/List
80: astore 52
82: aload 43
84: aload 52
86: invokestatic #1178 // InterfaceMethod scala/reflect/internal/util/Collections.$anonfun$mmap$1:(Lscala/Function1;Lscala/collection/immutable/List;)Lscala/collection/immutable/List;
89: getstatic #455 // Field scala/collection/immutable/Nil$.MODULE$:Lscala/collection/immutable/Nil$;
92: invokespecial #479 // Method scala/collection/immutable/$colon$colon."<init>":(Ljava/lang/Object;Lscala/collection/immutable/List;)V
95: astore 46
97: aload 46
99: astore 47
101: aload 4
103: invokevirtual #482 // Method scala/collection/immutable/List.tail:()Ljava/lang/Object;
106: checkcast #398 // class scala/collection/immutable/List
109: astore 48
111: aload 48
113: getstatic #455 // Field scala/collection/immutable/Nil$.MODULE$:Lscala/collection/immutable/Nil$;
116: if_acmpeq 172
119: new #468 // class scala/collection/immutable/$colon$colon
122: dup
123: aload 48
125: invokevirtual #472 // Method scala/collection/immutable/List.head:()Ljava/lang/Object;
128: checkcast #398 // class scala/collection/immutable/List
131: astore 52
133: aload 43
135: aload 52
137: invokestatic #1178 // InterfaceMethod scala/reflect/internal/util/Collections.$anonfun$mmap$1:(Lscala/Function1;Lscala/collection/immutable/List;)Lscala/collection/immutable/List;
140: getstatic #455 // Field scala/collection/immutable/Nil$.MODULE$:Lscala/collection/immutable/Nil$;
143: invokespecial #479 // Method scala/collection/immutable/$colon$colon."<init>":(Ljava/lang/Object;Lscala/collection/immutable/List;)V
146: astore 49
148: aload 47
150: aload 49
152: invokevirtual #486 // Method scala/collection/immutable/$colon$colon.tl_$eq:(Lscala/collection/immutable/List;)V
155: aload 49
157: astore 47
159: aload 48
161: invokevirtual #482 // Method scala/collection/immutable/List.tail:()Ljava/lang/Object;
164: checkcast #398 // class scala/collection/immutable/List
167: astore 48
169: goto 111
172: aload 46
174: astore 50
176: goto 190
179: aload 4
181: aload 44
183: aload 45
185: invokestatic #889 // InterfaceMethod scala/collection/TraversableLike.map$:(Lscala/collection/TraversableLike;Lscala/Function1;Lscala/collection/generic/CanBuildFrom;)Ljava/lang/Object;
188: astore 50
190: aload 50
192: checkcast #398 // class scala/collection/immutable/List
195: astore 51
197: aload 51
199: astore 7
201: aload 5
203: ifnonnull 208
206: aconst_null
207: athrow
208: new #1186 // class scala/collection/mutable/ListBuffer
211: dup
212: invokespecial #1187 // Method scala/collection/mutable/ListBuffer."<init>":()V
215: astore 24
217: aload 5
219: astore 25
221: aload 25
223: invokevirtual #853 // Method scala/collection/immutable/List.isEmpty:()Z
226: ifne 272
229: aload 25
231: invokevirtual #472 // Method scala/collection/immutable/List.head:()Ljava/lang/Object;
234: checkcast #201 // class scala/reflect/internal/Trees$Tree
237: astore 53
239: aload_0
240: aload 53
242: invokestatic #1191 // Method $anonfun$mkTemplate$2:(Lscala/reflect/internal/TreeGen;Lscala/reflect/internal/Trees$Tree;)Z
245: ifeq 272
248: aload 24
250: aload 25
252: invokevirtual #472 // Method scala/collection/immutable/List.head:()Ljava/lang/Object;
255: invokevirtual #1195 // Method scala/collection/mutable/ListBuffer.$plus$eq:(Ljava/lang/Object;)Lscala/collection/mutable/ListBuffer;
258: pop
259: aload 25
261: invokevirtual #482 // Method scala/collection/immutable/List.tail:()Ljava/lang/Object;
264: checkcast #398 // class scala/collection/immutable/List
267: astore 25
269: goto 221
272: aload 24
274: invokevirtual #1198 // Method scala/collection/mutable/ListBuffer.toList:()Lscala/collection/immutable/List;
277: astore 8
279: aload 25
281: astore 9
283: aload 8
285: astore 10
287: aload 9
289: astore 11
291: aload 10
293: aload_0
294: invokedynamic #1206, 0 // InvokeDynamic #3:apply:(Lscala/reflect/internal/TreeGen;)Lscala/Function1;
299: invokevirtual #1210 // Method scala/collection/immutable/List.partition:(Lscala/Function1;)Lscala/Tuple2;
302: astore 12
304: aload 12
306: ifnull 332
309: aload 12
311: invokevirtual #1215 // Method scala/Tuple2._1:()Ljava/lang/Object;
314: checkcast #398 // class scala/collection/immutable/List
317: astore 13
319: aload 12
321: invokevirtual #1218 // Method scala/Tuple2._2:()Ljava/lang/Object;
324: checkcast #398 // class scala/collection/immutable/List
327: astore 14
329: goto 342
332: new #751 // class scala/MatchError
335: dup
336: aload 12
338: invokespecial #752 // Method scala/MatchError."<init>":(Ljava/lang/Object;)V
341: athrow
342: aload 13
344: astore 15
346: aload 14
348: astore 16
350: aload 15
352: aload_0
353: invokedynamic #1226, 0 // InvokeDynamic #4:apply:(Lscala/reflect/internal/TreeGen;)Lscala/Function1;
358: getstatic #419 // Field scala/collection/immutable/List$.MODULE$:Lscala/collection/immutable/List$;
361: invokevirtual #423 // Method scala/collection/immutable/List$.canBuildFrom:()Lscala/collection/generic/CanBuildFrom;
364: astore 27
366: astore 26
368: ifnonnull 373
371: aconst_null
372: athrow
373: aload 27
375: getstatic #419 // Field scala/collection/immutable/List$.MODULE$:Lscala/collection/immutable/List$;
378: invokevirtual #883 // Method scala/collection/immutable/List$.ReusableCBF:()Lscala/collection/generic/GenTraversableFactory$GenericCanBuildFrom;
381: if_acmpne 509
384: aload 15
386: getstatic #455 // Field scala/collection/immutable/Nil$.MODULE$:Lscala/collection/immutable/Nil$;
389: if_acmpne 400
392: getstatic #455 // Field scala/collection/immutable/Nil$.MODULE$:Lscala/collection/immutable/Nil$;
395: astore 32
397: goto 520
400: new #468 // class scala/collection/immutable/$colon$colon
403: dup
404: aload 15
406: invokevirtual #472 // Method scala/collection/immutable/List.head:()Ljava/lang/Object;
409: checkcast #201 // class scala/reflect/internal/Trees$Tree
412: astore 54
414: aload_0
415: aload 54
417: invokestatic #1222 // Method $anonfun$mkTemplate$4:(Lscala/reflect/internal/TreeGen;Lscala/reflect/internal/Trees$Tree;)Lscala/reflect/internal/Trees$ValDef;
420: getstatic #455 // Field scala/collection/immutable/Nil$.MODULE$:Lscala/collection/immutable/Nil$;
423: invokespecial #479 // Method scala/collection/immutable/$colon$colon."<init>":(Ljava/lang/Object;Lscala/collection/immutable/List;)V
426: astore 28
428: aload 28
430: astore 29
432: aload 15
434: invokevirtual #482 // Method scala/collection/immutable/List.tail:()Ljava/lang/Object;
437: checkcast #398 // class scala/collection/immutable/List
440: astore 30
442: aload 30
444: getstatic #455 // Field scala/collection/immutable/Nil$.MODULE$:Lscala/collection/immutable/Nil$;
447: if_acmpeq 502
450: new #468 // class scala/collection/immutable/$colon$colon
453: dup
454: aload 30
456: invokevirtual #472 // Method scala/collection/immutable/List.head:()Ljava/lang/Object;
459: checkcast #201 // class scala/reflect/internal/Trees$Tree
462: astore 54
464: aload_0
465: aload 54
467: invokestatic #1222 // Method $anonfun$mkTemplate$4:(Lscala/reflect/internal/TreeGen;Lscala/reflect/internal/Trees$Tree;)Lscala/reflect/internal/Trees$ValDef;
470: getstatic #455 // Field scala/collection/immutable/Nil$.MODULE$:Lscala/collection/immutable/Nil$;
473: invokespecial #479 // Method scala/collection/immutable/$colon$colon."<init>":(Ljava/lang/Object;Lscala/collection/immutable/List;)V
476: astore 31
478: aload 29
480: aload 31
482: invokevirtual #486 // Method scala/collection/immutable/$colon$colon.tl_$eq:(Lscala/collection/immutable/List;)V
485: aload 31
487: astore 29
489: aload 30
491: invokevirtual #482 // Method scala/collection/immutable/List.tail:()Ljava/lang/Object;
494: checkcast #398 // class scala/collection/immutable/List
497: astore 30
499: goto 442
502: aload 28
504: astore 32
506: goto 520
509: aload 15
511: aload 26
513: aload 27
515: invokestatic #889 // InterfaceMethod scala/collection/TraversableLike.map$:(Lscala/collection/TraversableLike;Lscala/Function1;Lscala/collection/generic/CanBuildFrom;)Ljava/lang/Object;
518: astore 32
520: aload 32
522: checkcast #398 // class scala/collection/immutable/List
525: astore 17
527: aload 15
529: new #99 // class scala/reflect/internal/TreeGen$$anonfun$1
532: dup
533: aload_0
534: invokespecial #1229 // Method scala/reflect/internal/TreeGen$$anonfun$1."<init>":(Lscala/reflect/internal/TreeGen;)V
537: getstatic #419 // Field scala/collection/immutable/List$.MODULE$:Lscala/collection/immutable/List$;
540: invokevirtual #423 // Method scala/collection/immutable/List$.canBuildFrom:()Lscala/collection/generic/CanBuildFrom;
543: invokevirtual #1233 // Method scala/collection/immutable/List.collect:(Lscala/PartialFunction;Lscala/collection/generic/CanBuildFrom;)Ljava/lang/Object;
546: checkcast #398 // class scala/collection/immutable/List
549: astore 18
551: aload_3
552: invokevirtual #1236 // Method scala/reflect/internal/Trees$Modifiers.isTrait:()Z
555: ifeq 724
558: aload 5
560: astore 33
562: aload 33
564: invokeinterface #639, 1 // InterfaceMethod scala/collection/LinearSeqOptimized.isEmpty:()Z
569: ifne 614
572: aload 33
574: invokeinterface #640, 1 // InterfaceMethod scala/collection/LinearSeqOptimized.head:()Ljava/lang/Object;
579: checkcast #201 // class scala/reflect/internal/Trees$Tree
582: astore 55
584: aload_0
585: aload 55
587: invokestatic #1239 // Method $anonfun$mkTemplate$5:(Lscala/reflect/internal/TreeGen;Lscala/reflect/internal/Trees$Tree;)Z
590: ifne 599
593: iconst_0
594: istore 34
596: goto 617
599: aload 33
601: invokeinterface #648, 1 // InterfaceMethod scala/collection/LinearSeqOptimized.tail:()Ljava/lang/Object;
606: checkcast #636 // class scala/collection/LinearSeqOptimized
609: astore 33
611: goto 562
614: iconst_1
615: istore 34
617: iload 34
619: ifeq 628
622: getstatic #653 // Field scala/None$.MODULE$:Lscala/None$;
625: goto 923
628: new #646 // class scala/Some
631: dup
632: aload_0
633: invokevirtual #333 // Method global:()Lscala/reflect/internal/SymbolTable;
636: aload_0
637: invokevirtual #333 // Method global:()Lscala/reflect/internal/SymbolTable;
640: aload 6
642: aload 18
644: invokevirtual #1243 // Method scala/reflect/internal/SymbolTable.wrappingPos:(Lscala/reflect/internal/util/Position;Lscala/collection/immutable/List;)Lscala/reflect/internal/util/Position;
647: new #159 // class scala/reflect/internal/Trees$DefDef
650: dup
651: aload_0
652: invokevirtual #333 // Method global:()Lscala/reflect/internal/SymbolTable;
655: aload_0
656: invokevirtual #333 // Method global:()Lscala/reflect/internal/SymbolTable;
659: invokevirtual #1247 // Method scala/reflect/internal/SymbolTable.NoMods:()Lscala/reflect/api/Trees$ModifiersApi;
662: checkcast #177 // class scala/reflect/internal/Trees$Modifiers
665: aload_0
666: invokevirtual #333 // Method global:()Lscala/reflect/internal/SymbolTable;
669: invokevirtual #339 // Method scala/reflect/internal/SymbolTable.nme:()Lscala/reflect/internal/StdNames$nme$;
672: invokevirtual #1250 // Method scala/reflect/internal/StdNames$nme$.MIXIN_CONSTRUCTOR:()Lscala/reflect/internal/Names$TermName;
675: getstatic #455 // Field scala/collection/immutable/Nil$.MODULE$:Lscala/collection/immutable/Nil$;
678: getstatic #1255 // Field scala/reflect/internal/util/package$.MODULE$:Lscala/reflect/internal/util/package$;
681: invokevirtual #1258 // Method scala/reflect/internal/util/package$.ListOfNil:()Lscala/collection/immutable/List;
684: new #210 // class scala/reflect/internal/Trees$TypeTree
687: dup
688: aload_0
689: invokevirtual #333 // Method global:()Lscala/reflect/internal/SymbolTable;
692: invokespecial #1261 // Method scala/reflect/internal/Trees$TypeTree."<init>":(Lscala/reflect/internal/SymbolTable;)V
695: new #150 // class scala/reflect/internal/Trees$Block
698: dup
699: aload_0
700: invokevirtual #333 // Method global:()Lscala/reflect/internal/SymbolTable;
703: aload 18
705: aload_0
706: invokevirtual #1077 // Method mkLiteralUnit:()Lscala/reflect/internal/Trees$Literal;
709: invokespecial #1099 // Method scala/reflect/internal/Trees$Block."<init>":(Lscala/reflect/internal/SymbolTable;Lscala/collection/immutable/List;Lscala/reflect/internal/Trees$Tree;)V
712: invokespecial #1264 // Method scala/reflect/internal/Trees$DefDef."<init>":(Lscala/reflect/internal/SymbolTable;Lscala/reflect/internal/Trees$Modifiers;Lscala/reflect/internal/Names$TermName;Lscala/collection/immutable/List;Lscala/collection/immutable/List;Lscala/reflect/internal/Trees$Tree;Lscala/reflect/internal/Trees$Tree;)V
715: invokevirtual #696 // Method scala/reflect/internal/SymbolTable.atPos:(Lscala/reflect/internal/util/Position;Lscala/reflect/internal/Trees$Tree;)Lscala/reflect/internal/Trees$Tree;
718: invokespecial #647 // Method scala/Some."<init>":(Ljava/lang/Object;)V
721: goto 923
724: aload 51
726: invokevirtual #853 // Method scala/collection/immutable/List.isEmpty:()Z
729: ifne 773
732: aload 51
734: invokevirtual #472 // Method scala/collection/immutable/List.head:()Ljava/lang/Object;
737: checkcast #1266 // class scala/collection/SeqLike
740: invokeinterface #1267, 1 // InterfaceMethod scala/collection/SeqLike.isEmpty:()Z
745: ifne 787
748: aload 51
750: invokevirtual #472 // Method scala/collection/immutable/List.head:()Ljava/lang/Object;
753: checkcast #1269 // class scala/collection/IterableLike
756: invokeinterface #1270, 1 // InterfaceMethod scala/collection/IterableLike.head:()Ljava/lang/Object;
761: checkcast #216 // class scala/reflect/internal/Trees$ValDef
764: invokevirtual #1274 // Method scala/reflect/internal/Trees$ValDef.mods:()Lscala/reflect/internal/Trees$Modifiers;
767: invokevirtual #1277 // Method scala/reflect/internal/Trees$Modifiers.isImplicit:()Z
770: ifeq 787
773: getstatic #455 // Field scala/collection/immutable/Nil$.MODULE$:Lscala/collection/immutable/Nil$;
776: astore 20
778: aload 51
780: aload 20
782: invokevirtual #1278 // Method scala/collection/immutable/List.$colon$colon:(Ljava/lang/Object;)Lscala/collection/immutable/List;
785: astore 7
787: aload_0
788: invokevirtual #333 // Method global:()Lscala/reflect/internal/SymbolTable;
791: invokevirtual #1282 // Method scala/reflect/internal/SymbolTable.pendingSuperCall:()Lscala/reflect/internal/Trees$pendingSuperCall$;
794: astore 21
796: new #646 // class scala/Some
799: dup
800: aload_0
801: invokevirtual #333 // Method global:()Lscala/reflect/internal/SymbolTable;
804: aload_0
805: invokevirtual #333 // Method global:()Lscala/reflect/internal/SymbolTable;
808: aload 6
810: aload 7
812: getstatic #570 // Field scala/Predef$.MODULE$:Lscala/Predef$;
815: invokevirtual #1286 // Method scala/Predef$.$conforms:()Lscala/Predef$$less$colon$less;
818: invokevirtual #1290 // Method scala/collection/immutable/List.flatten:(Lscala/Function1;)Lscala/collection/GenTraversable;
821: checkcast #398 // class scala/collection/immutable/List
824: aload 18
826: invokevirtual #1293 // Method scala/collection/immutable/List.$colon$colon$colon:(Lscala/collection/immutable/List;)Lscala/collection/immutable/List;
829: invokevirtual #1243 // Method scala/reflect/internal/SymbolTable.wrappingPos:(Lscala/reflect/internal/util/Position;Lscala/collection/immutable/List;)Lscala/reflect/internal/util/Position;
832: invokevirtual #1296 // Method scala/reflect/internal/util/Position.makeTransparent:()Lscala/reflect/internal/util/Position;
835: new #159 // class scala/reflect/internal/Trees$DefDef
838: dup
839: aload_0
840: invokevirtual #333 // Method global:()Lscala/reflect/internal/SymbolTable;
843: aload_3
844: aload_0
845: invokevirtual #333 // Method global:()Lscala/reflect/internal/SymbolTable;
848: invokevirtual #339 // Method scala/reflect/internal/SymbolTable.nme:()Lscala/reflect/internal/StdNames$nme$;
851: invokevirtual #1157 // Method scala/reflect/internal/StdNames$nme$.CONSTRUCTOR:()Lscala/reflect/internal/Names$TermName;
854: getstatic #455 // Field scala/collection/immutable/Nil$.MODULE$:Lscala/collection/immutable/Nil$;
857: aload 7
859: new #210 // class scala/reflect/internal/Trees$TypeTree
862: dup
863: aload_0
864: invokevirtual #333 // Method global:()Lscala/reflect/internal/SymbolTable;
867: invokespecial #1261 // Method scala/reflect/internal/Trees$TypeTree."<init>":(Lscala/reflect/internal/SymbolTable;)V
870: new #150 // class scala/reflect/internal/Trees$Block
873: dup
874: aload_0
875: invokevirtual #333 // Method global:()Lscala/reflect/internal/SymbolTable;
878: getstatic #419 // Field scala/collection/immutable/List$.MODULE$:Lscala/collection/immutable/List$;
881: getstatic #570 // Field scala/Predef$.MODULE$:Lscala/Predef$;
884: iconst_1
885: anewarray #219 // class scala/reflect/internal/Trees$pendingSuperCall$
888: dup
889: iconst_0
890: aload 21
892: aastore
893: checkcast #1089 // class "[Ljava/lang/Object;"
896: invokevirtual #1093 // Method scala/Predef$.wrapRefArray:([Ljava/lang/Object;)Lscala/collection/mutable/WrappedArray;
899: invokevirtual #1096 // Method scala/collection/immutable/List$.apply:(Lscala/collection/Seq;)Lscala/collection/immutable/List;
902: aload 18
904: invokevirtual #1293 // Method scala/collection/immutable/List.$colon$colon$colon:(Lscala/collection/immutable/List;)Lscala/collection/immutable/List;
907: aload_0
908: invokevirtual #1077 // Method mkLiteralUnit:()Lscala/reflect/internal/Trees$Literal;
911: invokespecial #1099 // Method scala/reflect/internal/Trees$Block."<init>":(Lscala/reflect/internal/SymbolTable;Lscala/collection/immutable/List;Lscala/reflect/internal/Trees$Tree;)V
914: invokespecial #1264 // Method scala/reflect/internal/Trees$DefDef."<init>":(Lscala/reflect/internal/SymbolTable;Lscala/reflect/internal/Trees$Modifiers;Lscala/reflect/internal/Names$TermName;Lscala/collection/immutable/List;Lscala/collection/immutable/List;Lscala/reflect/internal/Trees$Tree;Lscala/reflect/internal/Trees$Tree;)V
917: invokevirtual #696 // Method scala/reflect/internal/SymbolTable.atPos:(Lscala/reflect/internal/util/Position;Lscala/reflect/internal/Trees$Tree;)Lscala/reflect/internal/Trees$Tree;
920: invokespecial #647 // Method scala/Some."<init>":(Ljava/lang/Object;)V
923: astore 19
925: aload 19
927: ifnonnull 932
930: aconst_null
931: athrow
932: aload 19
934: invokevirtual #656 // Method scala/Option.isEmpty:()Z
937: ifne 959
940: aload 19
942: invokevirtual #663 // Method scala/Option.get:()Ljava/lang/Object;
945: checkcast #159 // class scala/reflect/internal/Trees$DefDef
948: astore 56
950: aload_0
951: aload_1
952: aload 17
954: aload 56
956: invokestatic #1300 // Method $anonfun$mkTemplate$6:(Lscala/reflect/internal/TreeGen;Lscala/collection/immutable/List;Lscala/collection/immutable/List;Lscala/reflect/internal/Trees$DefDef;)V
959: aload 4
961: getstatic #570 // Field scala/Predef$.MODULE$:Lscala/Predef$;
964: invokevirtual #1286 // Method scala/Predef$.$conforms:()Lscala/Predef$$less$colon$less;
967: invokevirtual #1290 // Method scala/collection/immutable/List.flatten:(Lscala/Function1;)Lscala/collection/GenTraversable;
970: checkcast #398 // class scala/collection/immutable/List
973: aload_0
974: invokedynamic #1305, 0 // InvokeDynamic #5:apply:(Lscala/reflect/internal/TreeGen;)Lscala/Function1;
979: getstatic #419 // Field scala/collection/immutable/List$.MODULE$:Lscala/collection/immutable/List$;
982: invokevirtual #423 // Method scala/collection/immutable/List$.canBuildFrom:()Lscala/collection/generic/CanBuildFrom;
985: astore 37
987: astore 36
989: dup
990: ifnonnull 995
993: aconst_null
994: athrow
995: astore 35
997: aload 37
999: getstatic #419 // Field scala/collection/immutable/List$.MODULE$:Lscala/collection/immutable/List$;
1002: invokevirtual #883 // Method scala/collection/immutable/List$.ReusableCBF:()Lscala/collection/generic/GenTraversableFactory$GenericCanBuildFrom;
1005: if_acmpne 1133
1008: aload 35
1010: getstatic #455 // Field scala/collection/immutable/Nil$.MODULE$:Lscala/collection/immutable/Nil$;
1013: if_acmpne 1024
1016: getstatic #455 // Field scala/collection/immutable/Nil$.MODULE$:Lscala/collection/immutable/Nil$;
1019: astore 42
1021: goto 1144
1024: new #468 // class scala/collection/immutable/$colon$colon
1027: dup
1028: aload 35
1030: invokevirtual #472 // Method scala/collection/immutable/List.head:()Ljava/lang/Object;
1033: checkcast #216 // class scala/reflect/internal/Trees$ValDef
1036: astore 57
1038: aload_0
1039: aload 57
1041: invokestatic #1303 // Method $anonfun$mkTemplate$7:(Lscala/reflect/internal/TreeGen;Lscala/reflect/internal/Trees$ValDef;)Lscala/reflect/internal/Trees$ValDef;
1044: getstatic #455 // Field scala/collection/immutable/Nil$.MODULE$:Lscala/collection/immutable/Nil$;
1047: invokespecial #479 // Method scala/collection/immutable/$colon$colon."<init>":(Ljava/lang/Object;Lscala/collection/immutable/List;)V
1050: astore 38
1052: aload 38
1054: astore 39
1056: aload 35
1058: invokevirtual #482 // Method scala/collection/immutable/List.tail:()Ljava/lang/Object;
1061: checkcast #398 // class scala/collection/immutable/List
1064: astore 40
1066: aload 40
1068: getstatic #455 // Field scala/collection/immutable/Nil$.MODULE$:Lscala/collection/immutable/Nil$;
1071: if_acmpeq 1126
1074: new #468 // class scala/collection/immutable/$colon$colon
1077: dup
1078: aload 40
1080: invokevirtual #472 // Method scala/collection/immutable/List.head:()Ljava/lang/Object;
1083: checkcast #216 // class scala/reflect/internal/Trees$ValDef
1086: astore 57
1088: aload_0
1089: aload 57
1091: invokestatic #1303 // Method $anonfun$mkTemplate$7:(Lscala/reflect/internal/TreeGen;Lscala/reflect/internal/Trees$ValDef;)Lscala/reflect/internal/Trees$ValDef;
1094: getstatic #455 // Field scala/collection/immutable/Nil$.MODULE$:Lscala/collection/immutable/Nil$;
1097: invokespecial #479 // Method scala/collection/immutable/$colon$colon."<init>":(Ljava/lang/Object;Lscala/collection/immutable/List;)V
1100: astore 41
1102: aload 39
1104: aload 41
1106: invokevirtual #486 // Method scala/collection/immutable/$colon$colon.tl_$eq:(Lscala/collection/immutable/List;)V
1109: aload 41
1111: astore 39
1113: aload 40
1115: invokevirtual #482 // Method scala/collection/immutable/List.tail:()Ljava/lang/Object;
1118: checkcast #398 // class scala/collection/immutable/List
1121: astore 40
1123: goto 1066
1126: aload 38
1128: astore 42
1130: goto 1144
1133: aload 35
1135: aload 36
1137: aload 37
1139: invokestatic #889 // InterfaceMethod scala/collection/TraversableLike.map$:(Lscala/collection/TraversableLike;Lscala/Function1;Lscala/collection/generic/CanBuildFrom;)Ljava/lang/Object;
1142: astore 42
1144: aload 42
1146: checkcast #398 // class scala/collection/immutable/List
1149: astore 22
1151: new #195 // class scala/reflect/internal/Trees$Template
1154: dup
1155: aload_0
1156: invokevirtual #333 // Method global:()Lscala/reflect/internal/SymbolTable;
1159: aload_1
1160: aload_2
1161: aload 16
1163: getstatic #1310 // Field scala/Option$.MODULE$:Lscala/Option$;
1166: aload 19
1168: invokevirtual #1314 // Method scala/Option$.option2Iterable:(Lscala/Option;)Lscala/collection/Iterable;
1171: getstatic #419 // Field scala/collection/immutable/List$.MODULE$:Lscala/collection/immutable/List$;
1174: invokevirtual #423 // Method scala/collection/immutable/List$.canBuildFrom:()Lscala/collection/generic/CanBuildFrom;
1177: invokevirtual #1318 // Method scala/collection/immutable/List.$plus$plus$colon:(Lscala/collection/Traversable;Lscala/collection/generic/CanBuildFrom;)Ljava/lang/Object;
1180: checkcast #398 // class scala/collection/immutable/List
1183: astore 23
1185: aload 11
1187: aload 23
1189: invokevirtual #1293 // Method scala/collection/immutable/List.$colon$colon$colon:(Lscala/collection/immutable/List;)Lscala/collection/immutable/List;
1192: aload 22
1194: invokevirtual #1293 // Method scala/collection/immutable/List.$colon$colon$colon:(Lscala/collection/immutable/List;)Lscala/collection/immutable/List;
1197: aload 17
1199: invokevirtual #1293 // Method scala/collection/immutable/List.$colon$colon$colon:(Lscala/collection/immutable/List;)Lscala/collection/immutable/List;
1202: invokespecial #1321 // Method scala/reflect/internal/Trees$Template."<init>":(Lscala/reflect/internal/SymbolTable;Lscala/collection/immutable/List;Lscala/reflect/internal/Trees$ValDef;Lscala/collection/immutable/List;)V
1205: areturn
I use -XX:+PrintNMethodStatistics for seeing the total amount of generated code. To get assembly and size for an individual method I use -XX:+UnlockDiagnosticVMOptions -XX:CompileCommand=print,<qualified-class>.<method>
On HotSpot, the Scala optimizer improved the Scala compiler performance around 5% last time I checked. It would be great if the benefit of the Scala optimizer was zero (or even negative) on Graal.
