gcc/
* emit-rtl.h (replace_equiv_address, replace_equiv_address_nv): Add an
inplace argument. Store the new address in the original MEM when true.
* emit-rtl.c (change_address_1): Likewise.
(adjust_address_1, adjust_automodify_address_1, offset_address):
Update accordingly.
* rtl.h (plus_constant): Add an inplace argument.
* explow.c (plus_constant): Likewise. Try to reuse the original PLUS
when true. Avoid generating (plus X (const_int 0)).
* function.c (instantiate_virtual_regs_in_rtx): Adjust the PLUS
in-place. Pass true to plus_constant.
(instantiate_virtual_regs_in_insn): Pass true to replace_equiv_address.
From-SVN: r210543
