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Big speedup on small blocks. ``` name old time/op new time/op delta Decompress4XTable/digits-12 243µs ± 0% 228µs ± 1% -5.87% (p=0.008 n=5+5) Decompress4XTable/gettysburg-12 5.81µs ± 0% 5.42µs ± 0% -6.79% (p=0.008 n=5+5) Decompress4XTable/twain-12 735µs ± 1% 696µs ± 1% -5.35% (p=0.008 n=5+5) Decompress4XTable/low-ent.10k-12 73.1µs ± 1% 69.0µs ± 0% -5.64% (p=0.008 n=5+5) Decompress4XTable/superlow-ent-10k-12 20.4µs ± 0% 19.2µs ± 1% -5.49% (p=0.008 n=5+5) Decompress4XTable/case1-12 2.51µs ± 1% 2.16µs ± 1% -14.01% (p=0.008 n=5+5) Decompress4XTable/case2-12 2.47µs ± 0% 2.13µs ± 0% -13.74% (p=0.016 n=5+4) Decompress4XTable/case3-12 2.50µs ± 0% 2.15µs ± 0% -14.13% (p=0.008 n=5+5) Decompress4XTable/pngdata.001-12 98.9µs ± 1% 94.9µs ± 2% -4.08% (p=0.008 n=5+5) Decompress4XTable/normcount2-12 1.60µs ± 0% 1.51µs ± 0% -5.55% (p=0.008 n=5+5) name old speed new speed delta Decompress4XTable/digits-12 412MB/s ± 0% 438MB/s ± 1% +6.24% (p=0.008 n=5+5) Decompress4XTable/gettysburg-12 266MB/s ± 0% 286MB/s ± 0% +7.28% (p=0.008 n=5+5) Decompress4XTable/twain-12 356MB/s ± 1% 377MB/s ± 1% +5.65% (p=0.008 n=5+5) Decompress4XTable/low-ent.10k-12 547MB/s ± 1% 580MB/s ± 0% +5.98% (p=0.008 n=5+5) Decompress4XTable/superlow-ent-10k-12 516MB/s ± 0% 546MB/s ± 1% +5.81% (p=0.008 n=5+5) Decompress4XTable/case1-12 21.9MB/s ± 1% 25.5MB/s ± 1% +16.31% (p=0.008 n=5+5) Decompress4XTable/case2-12 18.2MB/s ± 0% 21.1MB/s ± 0% +15.94% (p=0.016 n=5+4) Decompress4XTable/case3-12 19.2MB/s ± 0% 22.3MB/s ± 0% +16.48% (p=0.008 n=5+5) Decompress4XTable/pngdata.001-12 518MB/s ± 1% 540MB/s ± 2% +4.26% (p=0.008 n=5+5) Decompress4XTable/normcount2-12 54.3MB/s ± 0% 57.5MB/s ± 0% +5.85% (p=0.008 n=5+5) ```
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Big speedup on small blocks.