[PATCH][AARCH64]Use mov for add with large immediate.

[Marcus Shawcroft]

On 21 April 2015 at 17:10, Renlin Li <renlin.li@arm.com> wrote:
> Hi all,
>
> This is a simple patch to generate a move instruction to temporarily hold
> the large immediate for a add instruction.
>
> GCC regression test has been run using aarch64-none-elf toolchain. NO new
> issues.
>
> Okay for trunk?
>
> Regards,
> Renlin Li
>
> gcc/ChangeLog:
>
> 2015-04-21  Renlin Li  <renlin.li@arm.com>
>
>     * config/aarch64/aarch64.md (add<mode>3): Use mov when allowed.

A couple style nits:

       HOST_WIDE_INT imm = INTVAL (operands[2]);
-
-      if (imm < 0)

Don't remove the blank line between declarations and the first statement.

+      if (aarch64_move_imm (imm, <MODE>mode)
+  && can_create_pseudo_p ())
+      {

The indentation of { should conform to the gnu style guide.

It also  looks to me that  an unbroken line will fit within the 80
column limit, hence the break before && is unnecessary.

Cheers
/Marcus