r266064 - in /trunk/gcc: ChangeLog config/arc/a...

[claziss@gcc.gnu.org]

Author: claziss
Date: Tue Nov 13 12:06:58 2018
New Revision: 266064

URL: https://gcc.gnu.org/viewcvs?rev=266064&root=gcc&view=rev
Log:
[ARC] Add peephole rules to combine store/loads into double store/loads

Simple peephole rules which combines multiple ld/st instructions into
64-bit load/store instructions. It only works for architectures which
are having double load/store option on.

gcc/
	Claudiu Zissulescu  <claziss@synopsys.com>

	* config/arc/arc-protos.h (gen_operands_ldd_std): Add.
	* config/arc/arc.c (operands_ok_ldd_std): New function.
	(mem_ok_for_ldd_std): Likewise.
	(gen_operands_ldd_std): Likewise.
	* config/arc/arc.md: Add peephole2 rules for std/ldd.

Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/config/arc/arc-protos.h
    trunk/gcc/config/arc/arc.c
    trunk/gcc/config/arc/arc.md