Commit graph

111 commits

Author SHA1 Message Date
Vadzim Dambrouski
fda8e1571f libcore: sort_unstable: improve randomization in break_patterns.
Select 3 random points instead of just 1.
Also the code now compiles on 16bit architectures.
2017-03-26 20:37:04 +03:00
Stjepan Glavina
2c816f7fb6 Optimize insertion sort
This change slightly changes the main iteration loop so that LLVM can
optimize it more efficiently.

Benchmark:

name                                   before ns/iter   after ns/iter    diff ns/iter   diff %
slice::sort_unstable_small_ascending   39 (2051 MB/s)   38 (2105 MB/s)             -1   -2.56%
slice::sort_unstable_small_big_random  579 (2210 MB/s)  575 (2226 MB/s)            -4   -0.69%
slice::sort_unstable_small_descending  80 (1000 MB/s)   70 (1142 MB/s)            -10  -12.50%
slice::sort_unstable_small_random      396 (202 MB/s)   386                       -10   -2.53%
2017-03-25 00:32:15 +01:00
Simonas Kazlauskas
2f0dd63bbe Checked (and unchecked) slicing for strings?
What is this magic‽
2017-03-22 18:43:01 +02:00
Stjepan Glavina
d6da1d9b46 Various fixes to wording consistency in the docs 2017-03-22 17:19:52 +01:00
Stjepan Glavina
a718051f63 Unit test heapsort 2017-03-21 20:46:20 +01:00
Stjepan Glavina
02d6e00587 Use partial insertion sort 2017-03-21 20:46:20 +01:00
Stjepan Glavina
c4454a5507 Tweak the constants a bit 2017-03-21 20:46:20 +01:00
Stjepan Glavina
942173b38f Fix grammar 2017-03-21 20:46:20 +01:00
Stjepan Glavina
cfe6e13b11 Faster sort_unstable on presorted inputs 2017-03-21 20:46:20 +01:00
Stjepan Glavina
e365974750 Address Alex's PR comments 2017-03-21 20:46:20 +01:00
Stjepan Glavina
f1913e2a30 Implement feature sort_unstable 2017-03-21 20:46:20 +01:00