* MIPS: overflow checking added in r24445 works only when source and destination of operation are different registers. Fixed cases of operations on same register.


git-svn-id: http://svn.freepascal.org/svn/fpc/trunk@24507 3ad0048d-3df7-0310-abae-a5850022a9f2
* MIPS: reworked 64-bit code generation, implemented overflow checking and optimized operations with constants.

git-svn-id: http://svn.freepascal.org/svn/fpc/trunk@24508 3ad0048d-3df7-0310-abae-a5850022a9f2