[fpc-pascal] Re: UnicodeString comparison performance

[leledumbo]

I look at the generated code and in the direct one there's additional
overhead of decrementing the reference counter on each iteration. Here's
what the core code looks like:

Direct:
  leal  -56(%ebp),%eax
  call  fpc_unicodestr_decr_ref
  leal  -56(%ebp),%eax
  call  P$TEST_$$_GETSOMESTRING$$UNICODESTRING
  movl  -56(%ebp),%eax
  movl  $_$TEST$_Ld2,%edx
  call  fpc_unicodestr_compare_equal
  testl %eax,%eax

Indirect:
  leal  -16(%ebp),%eax
  call  P$TEST_$$_GETSOMESTRING$$UNICODESTRING
  movl  $_$TEST$_Ld2,%edx
  movl  -16(%ebp),%eax
  call  fpc_unicodestr_compare_equal
  testl %eax,%eax



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