Nikolas Klauser
985c1a44f8
[libc++] Optimize the two range overload of mismatch (#86853)
```
-----------------------------------------------------------------------------
Benchmark old new
-----------------------------------------------------------------------------
bm_mismatch_two_range_overload<char>/1 0.941 ns 1.88 ns
bm_mismatch_two_range_overload<char>/2 1.43 ns 2.15 ns
bm_mismatch_two_range_overload<char>/3 1.95 ns 2.55 ns
bm_mismatch_two_range_overload<char>/4 2.58 ns 2.90 ns
bm_mismatch_two_range_overload<char>/5 3.75 ns 3.31 ns
bm_mismatch_two_range_overload<char>/6 5.00 ns 3.83 ns
bm_mismatch_two_range_overload<char>/7 5.59 ns 4.35 ns
bm_mismatch_two_range_overload<char>/8 6.37 ns 4.84 ns
bm_mismatch_two_range_overload<char>/16 11.8 ns 6.72 ns
bm_mismatch_two_range_overload<char>/64 45.5 ns 2.59 ns
bm_mismatch_two_range_overload<char>/512 366 ns 12.6 ns
bm_mismatch_two_range_overload<char>/4096 2890 ns 91.6 ns
bm_mismatch_two_range_overload<char>/32768 23038 ns 758 ns
bm_mismatch_two_range_overload<char>/262144 142813 ns 6573 ns
bm_mismatch_two_range_overload<char>/1048576 366679 ns 26710 ns
bm_mismatch_two_range_overload<short>/1 0.934 ns 1.88 ns
bm_mismatch_two_range_overload<short>/2 1.30 ns 2.58 ns
bm_mismatch_two_range_overload<short>/3 1.76 ns 3.28 ns
bm_mismatch_two_range_overload<short>/4 2.24 ns 3.98 ns
bm_mismatch_two_range_overload<short>/5 2.80 ns 4.92 ns
bm_mismatch_two_range_overload<short>/6 3.58 ns 6.01 ns
bm_mismatch_two_range_overload<short>/7 4.29 ns 7.03 ns
bm_mismatch_two_range_overload<short>/8 4.67 ns 7.39 ns
bm_mismatch_two_range_overload<short>/16 9.86 ns 13.1 ns
bm_mismatch_two_range_overload<short>/64 38.9 ns 4.55 ns
bm_mismatch_two_range_overload<short>/512 348 ns 27.7 ns
bm_mismatch_two_range_overload<short>/4096 2881 ns 225 ns
bm_mismatch_two_range_overload<short>/32768 23111 ns 1715 ns
bm_mismatch_two_range_overload<short>/262144 184846 ns 14416 ns
bm_mismatch_two_range_overload<short>/1048576 742885 ns 57264 ns
bm_mismatch_two_range_overload<int>/1 0.838 ns 1.19 ns
bm_mismatch_two_range_overload<int>/2 1.19 ns 1.65 ns
bm_mismatch_two_range_overload<int>/3 1.83 ns 2.06 ns
bm_mismatch_two_range_overload<int>/4 2.38 ns 2.42 ns
bm_mismatch_two_range_overload<int>/5 3.60 ns 2.47 ns
bm_mismatch_two_range_overload<int>/6 3.68 ns 3.05 ns
bm_mismatch_two_range_overload<int>/7 4.32 ns 3.36 ns
bm_mismatch_two_range_overload<int>/8 5.18 ns 3.58 ns
bm_mismatch_two_range_overload<int>/16 10.6 ns 2.84 ns
bm_mismatch_two_range_overload<int>/64 39.0 ns 7.78 ns
bm_mismatch_two_range_overload<int>/512 247 ns 53.9 ns
bm_mismatch_two_range_overload<int>/4096 1927 ns 429 ns
bm_mismatch_two_range_overload<int>/32768 15569 ns 3393 ns
bm_mismatch_two_range_overload<int>/262144 125413 ns 28504 ns
bm_mismatch_two_range_overload<int>/1048576 504549 ns 112729 ns
```
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