c/8559: [Tru64] -O3 hogs memory on Perl 5.8.0's toke.c

[Wolfgang Bangerth]

> With -O3 the SIZE and RES as shown by top(1) reach 103M and 100M
> (process cc1), with -O2 44M and 40M, with -O1 21M and 17M, with
> -O0 it finishes so fast that top(1) doesn't even catch it.

OK, this seems like excessive memory usage. 

For the record and those who briefly look at the report: the file hosts 
part of perl's parser, and -- no unexpectantly -- has a huge switch 
statement.

W.

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Wolfgang Bangerth             email:            bangerth@ticam.utexas.edu
                              www: http://www.ticam.utexas.edu/~bangerth/