I'm finding msp430-elf to generate relatively large code compared with mspgcc. In most cases I can switch to -mlarge and make things work, but I need the code to work on a CC430F5137 where that isn't an option.
While trying to figure out why a particular module has text size 5774 bytes under msp430-elf but only 3096 under mspgcc, I found a couple pessimizations by msp430-elf. I've reproduced this with both CCS 6.0.1-040's gcc_msp430_4.9.14r1_10 and upstream gcc 5.0.0, and filed a bugzilla report at: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64027
The TI compiler msp430_4.3.5 generates code equivalent to mspgcc on that example.
msp430-elf code growth of this magnitude blocks my goal of completely transitioning away from mspgcc.