On Wed, May 10, 2006 at 02:38:30PM -0600, Shaun Jackman wrote: > What optimisation option is needed to prod arm-elf-gcc -mthumb to > generate a tail call? ARM works as expected.
It's not yet supported. Remember, bl has a long range but clobbers lr, and there's no long branch instruction, so you have to convert the call to indirect. It's probably a space loss, stack usage improvement, and I'm not sure offhand about performance - may be a bit slower. -- Daniel Jacobowitz CodeSourcery
