Corelib text function fromLatin1 corrupted output

QString::fromLatin1 produces corrupted output in the case source address is misaligned by uneven number. Every 8th character gets 'randomly' replaced. Actually only first occurrence is random and the replacing char comes from the string being converted at offset of -11

The culprit is:

qtbase/src/corelib/text/qstring_mips_dsp_asm.S:326

#if defined(__mips_dspr2)
    prepend t1, t2, 8
#else
    sll    t4, t4, 24
    srl    t1, t1, 8
    or     t1, t1, t4
#endif

The correct is:

sll t4, t2, 24