* MIPS, TCpuAsmOptimizer.GetNextInstructionUsingReg: test that returned item is actually an instruction, because GetNextInstruction can sometimes stop on labels.
+ Try to eliminate register move after instructions that load from memory.

git-svn-id: http://svn.freepascal.org/svn/fpc/trunk@28380 3ad0048d-3df7-0310-abae-a5850022a9f2