[PATCH, AArch64] [4.8] Backport PR64304 fix (miscompilation with -mgeneral-regs-only )

[Marcus Shawcroft]

On 4 May 2015 at 10:03, Chen Shanyao <chenshanyao@huawei.com> wrote:
> According to your opinion, I split the backports of pr64304 into 2 emails,
> and this one is for 4.8 branch.
> This patch backport the fix of PR target/64304 , miscompilation with
> -mgeneral-regs-only, to the 4.8 branch from trunk r219844. Tested on x86_64
> by using qemu of aarch64.
> OK for 4.8?
>
>
> diff -rupN gcc-4.8-20150226/gcc/ChangeLog
> gcc-4.8-20150226.pr64304//gcc/ChangeLog
> --- gcc-4.8-20150226/gcc/ChangeLog    2015-03-04 21:13:46.000000000 -0500
> +++ gcc-4.8-20150226.pr64304//gcc/ChangeLog    2015-03-04 21:19:49.000000000
> -0500
> @@ -1,3 +1,13 @@
> +2015-03-05  Shanyao Chen  <chenshanyao@huawei.com>
> +
> +        Backported from mainline
> +        2015-01-19  Jiong Wang  <jiong.wang@arm.com>
> +                    Andrew Pinski  <apinski@cavium.com>
> +
> +        PR target/64304
> +        * config/aarch64/aarch64.md (define_insn "*ashl<mode>3_insn"):
> Deleted.
> +        (ashl<mode>3): Don't expand if operands[2] is not constant.
> +

OK /Marcus