The problem is, devirt hasn't happened yet when we compute the frame
size, so we *can't* know if bank 0 registers are used yet.
Also, I've had problems recomputing the frame size after reload. If
the frame size changes for *any* reason between reload and prologue,
you get corrupt code, as the el
Hi DJ,
I am submitting a patch on behalf of Renesas and KPIT. They found a
way to improve the prologues for interrupt handlers so that only the
registers that actually need to be saved are pushed onto the stack.
The patch has been tested with no regressions in the gcc testsuite for
an
