$ perl5.22 foo
                       Rate end_of_substring   all tr_and_end end_slurped while tr_and_match split tr_and_split_redux tr_and_split tr_moar_magic   tr
end_of_substring     3160/s               --  -16%       -29%        -30%  -39%         -48%  -72%               -95%         -95%          -95% -97%
all                  3775/s              19%    --       -15%        -17%  -27%         -38%  -67%               -94%         -94%          -94% -96%
tr_and_end           4439/s              40%   18%         --         -2%  -14%         -28%  -61%               -92%         -93%          -93% -96%
end_slurped          4537/s              44%   20%         2%          --  -12%         -26%  -60%               -92%         -93%          -93% -96%
while                5160/s              63%   37%        16%         14%    --         -16%  -54%               -91%         -92%          -92% -95%
tr_and_match         6124/s              94%   62%        38%         35%   19%           --  -46%               -90%         -91%          -91% -94%
split               11274/s             257%  199%       154%        148%  118%          84%    --               -81%         -83%          -83% -89%
tr_and_split_redux  59172/s            1773% 1467%      1233%       1204% 1047%         866%  425%                 --          -8%           -9% -44%
tr_and_split        64516/s            1942% 1609%      1354%       1322% 1150%         954%  472%                 9%           --           -1% -39%
tr_moar_magic       64935/s            1955% 1620%      1363%       1331% 1158%         960%  476%                10%           1%            -- -38%
tr                 105263/s            3232% 2688%      2272%       2220% 1940%        1619%  834%                78%          63%           62%   --
$ perl5.22 foo
                       Rate end_of_substring   all tr_and_end end_slurped while tr_and_match split tr_and_split_redux tr_and_split tr_moar_magic   tr
end_of_substring     3176/s               --  -17%       -31%        -33%  -41%         -50%  -73%               -95%         -95%          -95% -97%
all                  3828/s              21%    --       -17%        -19%  -29%         -39%  -67%               -94%         -94%          -94% -97%
tr_and_end           4598/s              45%   20%         --         -3%  -15%         -27%  -61%               -92%         -93%          -93% -96%
end_slurped          4730/s              49%   24%         3%          --  -12%         -25%  -59%               -92%         -93%          -93% -96%
while                5405/s              70%   41%        18%         14%    --         -14%  -54%               -91%         -92%          -92% -95%
tr_and_match         6313/s              99%   65%        37%         33%   17%           --  -46%               -89%         -90%          -91% -94%
split               11641/s             267%  204%       153%        146%  115%          84%    --               -81%         -82%          -83% -90%
tr_and_split_redux  59880/s            1786% 1464%      1202%       1166% 1008%         849%  414%                 --          -9%          -11% -47%
tr_and_split        65789/s            1972% 1618%      1331%       1291% 1117%         942%  465%                10%           --           -2% -41%
tr_moar_magic       67114/s            2013% 1653%      1360%       1319% 1142%         963%  477%                12%           2%            -- -40%
tr                 112360/s            3438% 2835%      2344%       2275% 1979%        1680%  865%                88%          71%           67%   --