Uber / nanoscope-artDuplication

Intro

For duplication, we look at places in code where there are 6 or more lines of code that are exactly the same.
Before duplication is calculated, the code is cleaned to remove empty lines, comments, and frequently duplicated constructs such as imports.
You should aim at having as little as possible (<5%) of duplicated code as high-level of duplication can lead to maintenance difficulties, poor factoring, and logical contradictions.

Learn more...

Duplication Overall

10% duplication:

245,417 cleaned lines of cleaned code (without empty lines, comments, and frequently duplicated constructs such as imports)
26,070 duplicated lines

4,054 duplicates

dependency graphs: 2D graph | 3D graph | 3D graph (with duplicates)...

Duplication per Extension

Duplication per Component (primary)

Duplication Between Components (50+ lines)

Download: SVG DOT (open online Graphviz editor)

From Component --> To Component	Duplicated Lines	File Pairs	Details
compiler (<1%) --> runtime (<1%)	220	10 file pairs	details...
cmdline (1%) --> patchoat (2%)	56	1 file pair	details...

Open 3D force graph...

Show more details on duplication between components...

Longest Duplicates

The list of 50 longest duplicates.

See data for all 4,054 duplicates...

Size	#	Folders	Files	Lines	Code
1025	x 2	compiler/utils compiler/utils	assembler_thumb_test_expected.cc.inc assembler_thumb_test_expected.cc.inc	1721:2745 (18%) 3922:4946 (18%)	view
73	x 2	compiler/utils/arm compiler/utils/arm	assembler_arm32.h assembler_thumb2.h	218:310 (25%) 264:360 (13%)	view
65	x 2	compiler/utils compiler/utils	assembler_thumb_test_expected.cc.inc assembler_thumb_test_expected.cc.inc	2821:2885 (1%) 3922:3986 (1%)	view
65	x 2	compiler/utils compiler/utils	assembler_thumb_test_expected.cc.inc assembler_thumb_test_expected.cc.inc	1721:1785 (1%) 2821:2885 (1%)	view
64	x 2	compiler/utils compiler/utils	assembler_thumb_test_expected.cc.inc assembler_thumb_test_expected.cc.inc	692:755 (1%) 2751:2814 (1%)	view
61	x 2	compiler/utils/arm compiler/utils/arm	assembler_arm32.h assembler_thumb2.h	40:131 (21%) 70:162 (11%)	view
54	x 2	compiler/utils/x86 compiler/utils/x86_64	constants_x86.h constants_x86_64.h	54:122 (69%) 63:131 (65%)	view
53	x 2	compiler/utils/arm compiler/utils/arm	assembler_arm32.h assembler_thumb2.h	151:213 (18%) 196:258 (9%)	view
51	x 2	compiler/utils/mips compiler/utils/mips64	assembler_mips.cc assembler_mips64.cc	781:831 (2%) 638:688 (3%)	view
42	x 2	compiler/utils/arm compiler/utils/x86	assembler_arm.h assembler_x86.h	913:982 (6%) 637:706 (8%)	view
40	x 2	compiler/optimizing compiler/optimizing	code_generator_mips.cc code_generator_mips64.cc	3061:3105 (1%) 2479:2523 (1%)	view
39	x 2	compiler/optimizing compiler/optimizing	code_generator_mips.cc code_generator_mips64.cc	3154:3196 (1%) 2525:2567 (1%)	view
37	x 2	runtime/arch/arm runtime/arch/arm64	registers_arm.h registers_arm64.h	56:92 (56%) 152:188 (23%)	view
36	x 2	compiler/utils/mips compiler/utils/mips64	assembler_mips.cc assembler_mips64.cc	1610:1646 (1%) 1293:1329 (2%)	view
34	x 2	compiler/utils/arm runtime/arch/arm64	constants_arm.h registers_arm64.h	61:94 (12%) 113:146 (21%)	view
34	x 2	compiler/utils/mips compiler/utils/mips64	constants_mips.h constants_mips64.h	55:93 (53%) 31:69 (82%)	view
33	x 2	compiler/optimizing compiler/optimizing	code_generator_arm.cc code_generator_x86.cc	2109:2153 (<1%) 2296:2340 (<1%)	view
33	x 2	compiler/optimizing compiler/optimizing	code_generator_x86.cc code_generator_x86_64.cc	5380:5457 (<1%) 4805:4882 (<1%)	view
33	x 2	runtime/arch/mips runtime/arch/mips64	registers_mips.h registers_mips64.h	71:103 (41%) 72:104 (41%)	view
31	x 2	compiler/utils/mips compiler/utils/mips64	assembler_mips.h assembler_mips64.h	571:605 (5%) 493:527 (6%)	view
30	x 2	compiler/optimizing compiler/optimizing	code_generator_arm.cc code_generator_x86.cc	1350:1381 (<1%) 1273:1305 (<1%)	view
30	x 2	runtime/arch/mips runtime/arch/mips64	fault_handler_mips.cc fault_handler_mips64.cc	58:120 (54%) 58:120 (54%)	view
28	x 2	cmdline patchoat	cmdline.h patchoat.cc	38:79 (13%) 51:91 (2%)	view
28	x 2	compiler/optimizing compiler/optimizing	intrinsics_x86.cc intrinsics_x86_64.cc	408:467 (1%) 296:355 (1%)	view
28	x 2	compiler/optimizing compiler/optimizing	code_generator_x86.cc code_generator_x86_64.cc	2277:2316 (<1%) 2361:2400 (<1%)	view
27	x 2	compiler/optimizing compiler/optimizing	code_generator_arm.cc code_generator_x86.cc	553:586 (<1%) 570:603 (<1%)	view
27	x 2	tools/dexfuzz/src/dexfuzz/rawdex/formats tools/dexfuzz/src/dexfuzz/rawdex/formats	Format21h.java Format21s.java	25:65 (96%) 25:65 (96%)	view
26	x 2	compiler/optimizing compiler/optimizing	code_generator_x86.cc code_generator_x86_64.cc	2356:2391 (<1%) 2440:2475 (<1%)	view
26	x 2	runtime/jdwp runtime/jdwp	jdwp_adb.cc jdwp_socket.cc	315:364 (12%) 393:442 (10%)	view
26	x 2	compiler/optimizing compiler/optimizing	code_generator_arm.h code_generator_x86.h	452:514 (7%) 472:534 (7%)	view
25	x 2	compiler/utils/arm64 compiler/utils/x86_64	assembler_arm64.h assembler_x86_64.h	112:143 (16%) 706:747 (4%)	view
25	x 2	compiler/utils/arm compiler/utils/arm	assembler_arm32.h assembler_thumb2.h	364:393 (8%) 737:766 (4%)	view
24	x 2	compiler/optimizing compiler/optimizing	code_generator_mips.cc code_generator_mips64.cc	3811:3837 (<1%) 3026:3052 (<1%)	view
24	x 2	compiler/utils/mips compiler/utils/mips64	assembler_mips.cc assembler_mips64.cc	1969:2002 (1%) 1637:1670 (1%)	view
24	x 2	runtime/arch/arm runtime/arch/arm64	entrypoints_init_arm.cc entrypoints_init_arm64.cc	80:107 (42%) 63:90 (47%)	view
24	x 2	runtime/interpreter runtime/interpreter	unstarted_runtime.cc unstarted_runtime.cc	1302:1335 (2%) 1346:1380 (2%)	view
23	x 2	compiler/optimizing compiler/optimizing	code_generator_arm.cc code_generator_arm64.cc	5236:5261 (<1%) 4039:4064 (<1%)	view
23	x 2	compiler/optimizing compiler/optimizing	code_generator_x86.cc code_generator_x86_64.cc	6420:6446 (<1%) 5783:5809 (<1%)	view
23	x 2	compiler/optimizing compiler/optimizing	code_generator_x86.cc code_generator_x86_64.cc	4538:4564 (<1%) 897:923 (<1%)	view
23	x 2	compiler/optimizing compiler/optimizing	code_generator_arm.cc code_generator_arm64.cc	5599:5627 (<1%) 3339:3367 (<1%)	view
22	x 2	compiler/optimizing compiler/optimizing	code_generator_arm.cc code_generator_x86_64.cc	368:390 (<1%) 406:428 (<1%)	view
22	x 2	compiler/utils/x86 compiler/utils/x86_64	assembler_x86.h assembler_x86_64.h	687:730 (4%) 756:799 (3%)	view
22	x 2	compiler/utils/arm compiler/utils/arm	assembler_arm32.cc assembler_thumb2.cc	1488:1509 (2%) 3682:3703 (<1%)	view
22	x 2	runtime/arch/x86 runtime/arch/x86_64	context_x86.h context_x86_64.h	51:85 (43%) 51:85 (53%)	view
22	x 2	compiler/utils/x86 compiler/utils/x86_64	assembler_x86.h assembler_x86_64.h	448:477 (4%) 474:503 (3%)	view
22	x 2	compiler/optimizing compiler/optimizing	code_generator_arm.cc code_generator_x86.cc	368:390 (<1%) 385:407 (<1%)	view
22	x 2	compiler/optimizing compiler/optimizing	code_generator_arm.cc code_generator_x86.cc	2385:2413 (<1%) 2615:2643 (<1%)	view
22	x 2	compiler/optimizing compiler/optimizing	code_generator_x86.cc code_generator_x86_64.cc	385:407 (<1%) 406:428 (<1%)	view
21	x 2	compiler/optimizing compiler/optimizing	code_generator_x86.cc code_generator_x86_64.cc	6208:6233 (<1%) 5566:5591 (<1%)	view
21	x 2	compiler/driver compiler/driver	compiler_options.cc compiler_options.h	56:76 (14%) 57:77 (12%)	view

Duplicated Units

The list of top 50 duplicated units.

See data for all 103 unit duplicates...

Size	#	Folders	Files	Lines	Code
30	x 2	cmdline patchoat	cmdline.h patchoat.cc	41:81 53:93	view
29	x 2	compiler/utils/mips compiler/utils/mips64	assembler_mips.cc assembler_mips64.cc	1967:2005 1635:1673	view
26	x 2	compiler/optimizing compiler/optimizing	code_generator_mips.cc code_generator_mips64.cc	3810:3839 3025:3054	view
25	x 2	compiler/optimizing compiler/optimizing	code_generator_x86.cc code_generator_x86_64.cc	6419:6448 5782:5811	view
25	x 2	compiler/optimizing compiler/optimizing	code_generator_arm64.cc code_generator_arm.cc	3338:3369 5598:5629	view
23	x 2	compiler/optimizing compiler/optimizing	code_generator_x86.cc code_generator_x86_64.cc	6207:6235 5565:5593	view
23	x 2	compiler/optimizing compiler/optimizing	code_generator_arm64.cc code_generator_arm.cc	3153:3182 5414:5443	view
22	x 2	compiler/utils/mips compiler/utils/mips64	assembler_mips.cc assembler_mips64.cc	1805:1833 1470:1498	view
21	x 2	compiler/optimizing compiler/optimizing	code_generator_mips.cc code_generator_mips64.cc	484:512 430:458	view
20	x 2	compiler/optimizing compiler/optimizing	code_generator_x86.cc code_generator_x86_64.cc	1583:1605 1557:1578	view
19	x 2	compiler/utils/x86 compiler/utils/x86_64	assembler_x86.cc assembler_x86_64.cc	1565:1585 2007:2027	view
19	x 2	compiler/optimizing compiler/optimizing	code_generator_arm.cc code_generator_x86_64.cc	4324:4349 4520:4545	view
18	x 2	compiler/optimizing compiler/optimizing	code_generator_mips.cc code_generator_mips64.cc	1813:1832 1436:1455	view
18	x 3	compiler/optimizing compiler/optimizing compiler/optimizing	code_generator_mips.cc code_generator_arm64.cc code_generator_mips64.cc	4111:4132 4205:4226 3329:3350	view
18	x 2	compiler/optimizing compiler/optimizing	code_generator_arm64.cc code_generator_mips64.cc	2673:2694 2091:2112	view
17	x 2	compiler/utils/mips compiler/utils/mips64	assembler_mips.cc assembler_mips64.cc	1860:1889 1525:1554	view
17	x 2	compiler/utils/mips64 compiler/utils/arm	assembler_mips64.cc assembler_thumb2.cc	42:66 299:323	view
17	x 2	compiler/utils/x86 compiler/utils/x86_64	assembler_x86.cc assembler_x86_64.cc	1632:1650 2076:2094	view
16	x 2	compiler/utils/mips compiler/utils/mips64	assembler_mips.cc assembler_mips64.cc	1737:1758 1412:1433	view
16	x 2	compiler/optimizing compiler/optimizing	code_generator_mips.cc code_generator_mips64.cc	2197:2215 1783:1801	view
16	x 2	compiler/optimizing compiler/optimizing	code_generator_mips.cc code_generator_mips64.cc	4206:4225 3384:3403	view
15	x 2	compiler/utils/mips compiler/utils/mips64	assembler_mips.cc assembler_mips64.cc	1903:1924 1568:1589	view
15	x 2	compiler/optimizing compiler/optimizing	code_generator_mips.cc code_generator_arm64.cc	2592:2609 2779:2796	view
14	x 2	compiler/optimizing compiler/optimizing	code_generator_x86.cc code_generator_x86_64.cc	696:711 715:730	view
14	x 2	compiler/optimizing compiler/optimizing	code_generator_x86.cc code_generator_x86_64.cc	1125:1143 1226:1244	view
13	x 2	compiler/utils/x86 compiler/utils/x86_64	assembler_x86.cc assembler_x86_64.cc	1822:1838 2377:2393	view
13	x 2	compiler/optimizing compiler/optimizing	code_generator_x86.cc code_generator_x86_64.cc	4333:4353 4061:4081	view
12	x 2	compiler/utils/x86 compiler/utils/x86_64	assembler_x86.cc assembler_x86_64.cc	1588:1601 2030:2043	view
12	x 2	compiler/utils/x86 compiler/utils/x86_64	assembler_x86.cc assembler_x86_64.cc	1604:1617 2046:2059	view
12	x 2	compiler/utils/x86 compiler/utils/x86_64	assembler_x86.cc assembler_x86_64.cc	1653:1666 2097:2110	view
12	x 3	compiler/optimizing compiler/optimizing compiler/optimizing	code_generator_mips.cc code_generator_arm.cc code_generator_mips64.cc	3357:3370 1568:1581 2682:2695	view
11	x 3	runtime/arch/mips runtime/arch/mips64 runtime/arch/arm64	context_mips.cc context_mips64.cc context_arm64.cc	39:55 39:55 42:58	view
11	x 2	compiler/utils/x86 compiler/utils/x86_64	assembler_x86.cc assembler_x86_64.cc	1807:1819 2362:2374	view
11	x 2	compiler/utils/arm compiler/utils/arm	assembler_arm32.cc assembler_thumb2.cc	356:368 934:946	view
11	x 2	compiler/utils/arm compiler/utils/arm	assembler_arm32.cc assembler_thumb2.cc	371:383 949:961	view
11	x 2	compiler/optimizing compiler/optimizing	code_generator_x86.cc code_generator_x86_64.cc	5032:5044 4471:4483	view
11	x 3	compiler/optimizing compiler/optimizing compiler/optimizing	code_generator_x86.cc code_generator_arm.cc code_generator_x86_64.cc	7041:7057 6295:6311 6440:6456	view
10	x 2	sigchainlib sigchainlib	sigchain.cc sigchain_dummy.cc	101:112 36:47	view
10	x 2	compiler/utils/mips compiler/utils/mips64	assembler_mips.cc assembler_mips64.cc	1926:1943 1591:1608	view
10	x 2	compiler/utils/x86 compiler/utils/x86_64	assembler_x86.cc assembler_x86_64.cc	1887:1899 2446:2458	view
10	x 2	compiler/optimizing compiler/optimizing	code_generator_x86.cc code_generator_arm.cc	621:636 604:619	view
10	x 2	compiler/optimizing compiler/optimizing	code_generator_x86.cc code_generator_x86_64.cc	6643:6654 6059:6070	view
10	x 2	compiler/optimizing compiler/optimizing	code_generator_mips.cc code_generator_mips64.cc	3927:3942 3142:3157	view
10	x 2	compiler/optimizing compiler/optimizing	code_generator_mips.cc code_generator_mips64.cc	4291:4302 3456:3467	view
10	x 2	compiler/optimizing compiler/optimizing	intrinsics_mips.cc intrinsics_mips64.cc	2170:2181 1563:1574	view
10	x 4	compiler/optimizing compiler/optimizing compiler/optimizing compiler/optimizing	intrinsics_x86.cc intrinsics_arm64.cc intrinsics_arm.cc intrinsics_x86_64.cc	57:77 145:165 44:64 51:71	view
10	x 2	compiler/optimizing compiler/optimizing	code_generator_arm64.cc code_generator_arm.cc	4192:4203 5801:5812	view
9	x 2	runtime/gc/space runtime/gc/space	bump_pointer_space.cc region_space.cc	121:132 398:408	view
9	x 2	compiler/linker compiler	relative_patcher.cc oat_writer.cc	103:113 2224:2234	view
9	x 2	compiler/utils/mips compiler/utils/mips64	assembler_mips.cc assembler_mips64.cc	1503:1513 1193:1203	view