[NDS32] Add unaligned access support.
gcc/
* config/nds32/constants.md (unspec_volatile_element): Add enum values
for unaligned access.
* config/nds32/nds32-intrinsic.c: Implementation of expanding
unaligned access.
* config/nds32/nds32-intrinsic.md: Likewise.
* config/nds32/nds32_intrinsic.h: Likewise.
* config/nds32/nds32.h (nds32_builtins): Likewise.
* config/nds32/nds32.opt (munaligned-access): New option.
* config/nds32/nds32.c (nds32_asm_file_start): Display
flag_unaligned_access status.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@259545 138bc75d-0d04-0410-961f-82ee72b054a4