- allow two FastMutInts to be bundled in the same ByteArray to reduce allocations
- use this in GHC.Utils.Binary
Found with ticky on the simple example in #16822
Metrics: compile_time/bytes allocated
-------------------------------------
Baseline
Test Metric value New value Change
-----------------------------------------------------------------------------
ManyAlternatives(normal) ghc/alloc 745,607,132 745,261,856 -0.0%
ManyConstructors(normal) ghc/alloc 3,991,507,836 3,989,383,184 -0.1%
MultiLayerModules(normal) ghc/alloc 3,062,035,508 3,061,051,464 -0.0%
MultiLayerModulesRecomp(normal) ghc/alloc 894,094,816 893,463,672 -0.1%
PmSeriesG(normal) ghc/alloc 45,857,356 45,683,568 -0.4%
PmSeriesS(normal) ghc/alloc 54,105,392 53,933,224 -0.3%
PmSeriesT(normal) ghc/alloc 77,477,072 77,304,296 -0.2%
PmSeriesV(normal) ghc/alloc 53,485,448 53,312,784 -0.3%
T10421(normal) ghc/alloc 112,612,744 112,361,688 -0.2%
T10421a(normal) ghc/alloc 78,676,820 78,445,408 -0.3%
T10547(normal) ghc/alloc 28,327,552 28,268,360 -0.2%
T10858(normal) ghc/alloc 126,078,300 125,702,296 -0.3%
T11195(normal) ghc/alloc 235,547,116 234,993,168 -0.2%
T11276(normal) ghc/alloc 96,081,872 95,826,872 -0.3%
T11303b(normal) ghc/alloc 40,647,416 40,456,400 -0.5%
T11374(normal) ghc/alloc 194,869,004 194,627,800 -0.1%
T11545(normal) ghc/alloc 971,619,688 971,339,448 -0.0%
T11822(normal) ghc/alloc 109,370,860 109,046,408 -0.3%
T12150(optasm) ghc/alloc 78,873,824 78,661,072 -0.3%
T12227(normal) ghc/alloc 493,878,864 493,233,376 -0.1%
T12234(optasm) ghc/alloc 56,697,936 56,460,744 -0.4%
T12425(optasm) ghc/alloc 90,344,204 90,070,512 -0.3%
T12545(normal) ghc/alloc 1,694,274,064 1,694,075,440 -0.0%
T12707(normal) ghc/alloc 955,338,556 954,757,120 -0.1%
T13035(normal) ghc/alloc 101,700,832 101,492,120 -0.2%
T13056(optasm) ghc/alloc 365,668,104 364,940,472 -0.2%
T13253(normal) ghc/alloc 332,521,812 331,981,216 -0.2%
T13253-spj(normal) ghc/alloc 124,537,000 124,322,792 -0.2%
T13379(normal) ghc/alloc 358,809,716 358,631,272 -0.0%
T13701(normal) ghc/alloc 2,399,736,804 2,399,245,480 -0.0%
T13719(normal) ghc/alloc 4,191,140,712 4,188,964,456 -0.1%
T14052(ghci) ghc/alloc 3,808,067,304 3,809,820,960 +0.0%
T14052Type(ghci) ghc/alloc 3,809,179,028 3,809,406,360 +0.0%
T14683(normal) ghc/alloc 2,990,899,824 2,985,657,240 -0.2%
T14697(normal) ghc/alloc 363,203,380 363,015,216 -0.1%
T15164(normal) ghc/alloc 1,289,538,432 1,289,052,800 -0.0%
T15304(normal) ghc/alloc 1,276,444,144 1,276,071,832 -0.0%
T15630(normal) ghc/alloc 160,491,948 160,268,472 -0.1%
T16190(normal) ghc/alloc 276,789,220 275,702,832 -0.4%
T16577(normal) ghc/alloc 7,535,562,636 7,533,310,416 -0.0%
T16875(normal) ghc/alloc 34,868,396 34,677,600 -0.5%
T17096(normal) ghc/alloc 221,948,880 221,674,848 -0.1%
T17516(normal) ghc/alloc 1,705,802,864 1,705,184,960 -0.0%
T17836(normal) ghc/alloc 911,982,012 911,774,096 -0.0%
T17836b(normal) ghc/alloc 46,705,180 46,529,048 -0.4%
T17977(normal) ghc/alloc 40,217,620 40,045,448 -0.4%
T17977b(normal) ghc/alloc 37,831,032 37,653,376 -0.5%
T18140(normal) ghc/alloc 81,794,904 81,612,288 -0.2%
T18223(normal) ghc/alloc 1,164,492,976 1,164,078,792 -0.0%
T18282(normal) ghc/alloc 130,871,928 130,563,624 -0.2%
T18304(normal) ghc/alloc 86,378,180 86,108,448 -0.3%
T18478(normal) ghc/alloc 529,345,936 528,808,528 -0.1%
T18698a(normal) ghc/alloc 201,196,844 200,829,176 -0.2%
T18698b(normal) ghc/alloc 229,028,228 228,660,432 -0.2%
T18923(normal) ghc/alloc 68,393,144 68,196,552 -0.3%
T1969(normal) ghc/alloc 758,402,800 758,035,144 -0.0%
T19695(normal) ghc/alloc 1,412,461,700 1,410,965,056 -0.1%
T20049(normal) ghc/alloc 88,434,480 88,221,416 -0.2%
T20261(normal) ghc/alloc 620,979,420 620,127,072 -0.1%
T3064(normal) ghc/alloc 190,741,960 190,512,616 -0.1%
T3294(normal) ghc/alloc 1,604,675,028 1,604,458,464 -0.0%
T4801(normal) ghc/alloc 296,567,408 296,361,672 -0.1%
T5030(normal) ghc/alloc 364,263,400 364,024,504 -0.1%
T5321FD(normal) ghc/alloc 270,398,384 270,147,408 -0.1%
T5321Fun(normal) ghc/alloc 300,552,744 300,301,456 -0.1%
T5631(normal) ghc/alloc 575,589,380 575,135,016 -0.1%
T5642(normal) ghc/alloc 469,051,240 468,494,920 -0.1%
T5837(normal) ghc/alloc 35,941,452 35,745,880 -0.5%
T6048(optasm) ghc/alloc 102,329,240 102,127,376 -0.2%
T783(normal) ghc/alloc 386,224,196 386,036,272 -0.0%
T9020(optasm) ghc/alloc 247,428,408 247,101,144 -0.1%
T9198(normal) ghc/alloc 47,166,868 46,984,368 -0.4%
T9233(normal) ghc/alloc 676,698,948 676,406,736 -0.0%
T9630(normal) ghc/alloc 1,451,467,676 1,449,354,616 -0.1%
T9675(optasm) ghc/alloc 426,966,472 426,722,808 -0.1%
T9872a(normal) ghc/alloc 1,704,633,096 1,704,545,624 -0.0%
T9872b(normal) ghc/alloc 2,180,091,080 2,180,002,928 -0.0%
T9872c(normal) ghc/alloc 1,760,189,784 1,760,102,080 -0.0%
T9872d(normal) ghc/alloc 500,935,632 500,697,936 -0.0%
T9961(normal) ghc/alloc 353,016,268 352,413,360 -0.2%
TcPlugin_RewritePerf(normal) ghc/alloc 2,370,918,904 2,369,444,584 -0.1%
WWRec(normal) ghc/alloc 587,826,708 587,441,368 -0.1%
hard_hole_fits(normal) ghc/alloc 492,501,216 490,902,992 -0.3%
hie002(normal) ghc/alloc 9,333,518,192 9,326,561,288 -0.1%
parsing001(normal) ghc/alloc 537,422,368 537,443,800 +0.0%
geo. mean -0.2%
* All baselines were measured in the same environment as this test run
* All baseline commits are 9552781abf