Package: gcc-msp430

"gcc-msp430" package binaries on Debian:

/usr/bin/msp430-c++ /usr/bin/msp430-cpp /usr/bin/msp430-gcc-4.6.3 /usr/bin/msp430-gcc /usr/bin/msp430-gcov /usr/bin/msp430-g++

You may install this package on Debian with apt-get install gcc-msp430