r213487 - in /trunk/gcc: ChangeLog config/aarch...

[jiwang@gcc.gnu.org]

Author: jiwang
Date: Fri Aug  1 15:09:05 2014
New Revision: 213487

URL: https://gcc.gnu.org/viewcvs?rev=213487&root=gcc&view=rev
Log:
[AArch64][2/2] Add constrain to address offset in storewb_pair/loadwb_pair insns

Add a pridicate to check whether the const offset is valid.
For 32-bit variant: -256 <= offset <= 252
For 64-bit variant: -512 <= offset <= 504

2014-07-29  Renlin Li  <renlin.li@arm.com>
2014-07-29  Jiong Wang  <jiong.wang@arm.com>

gcc/
  * config/aarch64/aarch64.c (offset_7bit_signed_scaled_p): Rename to
  aarch64_offset_7bit_signed_scaled_p, remove static and use it.
  * config/aarch64/aarch64-protos.h (aarch64_offset_7bit_signed_scaled_p):
  Declaration.
  * config/aarch64/predicates.md (aarch64_mem_pair_offset): Define new
  predicate.
  * config/aarch64/aarch64.md (loadwb_pair, storewb_pair): Use
  aarch64_mem_pair_offset.


Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/config/aarch64/aarch64-protos.h
    trunk/gcc/config/aarch64/aarch64.c
    trunk/gcc/config/aarch64/aarch64.md
    trunk/gcc/config/aarch64/predicates.md