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 -- View this message in context: http://free-pascal-general.1045716.n5.nabble.com/UnicodeString-comparison-performance-tp5710405p5710408.html Sent from the Free Pascal - General mailing list archive at Nabble.com. _______________________________________________ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal
