[AIX] Add -msave-reg-params to save arguments to stack (#97524)

In PowerPC ABI, a few initial arguments are passed through registers,
but their places in parameter save area are reserved, arguments passed
by memory goes after the reserved location.

For debugging purpose, we may want to save copy of the pass-by-reg
arguments into correct places on stack. The new option achieves by
adding new function level attribute and make argument lowering part
aware of it.

0 files changed, 0 insertions, 0 deletions