[fpc-devel] Patch to speed up Uppercase/Lowercase functions

[Martin Schreiber]

Some more test results with PII 350MHz and
two additional implementations with lookup table:

Kylix:
lowercase   execution time: 336887
lowercase 1 execution time: 380923
lowercase 2 execution time: 375411
lowercase 3 execution time: 369814
lowercase 4 execution time: 320665
lowercase 5 execution time: 300580
lowercase 6 execution time: 219047
lowercase 7 execution time: 356606
lowercase 8 execution time: 249913
lowercase 9 execution time: 252431

FPC -OG1
lowercase   execution time: 474871
lowercase 1 execution time: 497440
lowercase 2 execution time: 464547
lowercase 3 execution time: 488088
lowercase 4 execution time: 322630
lowercase 5 execution time: 321486
lowercase 6 execution time: 299599
lowercase 7 execution time: 279863
lowercase 8 execution time: 282185
lowercase 9 execution time: 181006
 
FPC -OG2
lowercase   execution time: 475327
lowercase 1 execution time: 486661
lowercase 2 execution time: 449136
lowercase 3 execution time: 471541
lowercase 4 execution time: 282642
lowercase 5 execution time: 285662
lowercase 6 execution time: 260930
lowercase 7 execution time: 261744
lowercase 8 execution time: 268638
lowercase 9 execution time: 169120

FPC -Og1
lowercase   execution time: 474512
lowercase 1 execution time: 504779
lowercase 2 execution time: 472132
lowercase 3 execution time: 491122
lowercase 4 execution time: 324513
lowercase 5 execution time: 424865
lowercase 6 execution time: 714593
lowercase 7 execution time: 277637
lowercase 8 execution time: 703568
lowercase 9 execution time: 177973

FPC -Og2
lowercase   execution time: 474981
lowercase 1 execution time: 500521
lowercase 2 execution time: 472871
lowercase 3 execution time: 483081
lowercase 4 execution time: 301566
lowercase 5 execution time: 418570
lowercase 6 execution time: 707521
lowercase 7 execution time: 272874
lowercase 8 execution time: 694156
lowercase 9 execution time: 175725
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