[fpc-devel] Binary size discrepancy with -a

[J. Gareth Moreton]

Hi everyone,

I've noticed something a bit weird with the Free Pascal Compiler when 
you use the the -a option to dump the compiled assembly files... the 
resultant binaries are sometimes smaller.  I recently tried it with 
Lazarus under x86_64-win64 (using "make distclean all install" with FPCOPT):

(-O4 -OoCONSTPROP)
241,010,289 bytes - lazarus.exe

(-a -O4 -OoCONSTPROP)
235,655,062 bytes - lazarus.exe

Anyone else noticed this? Logically, shoudn't the EXE files be 
completely identical?

Gareth aka. Kit


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