> -----Original Message-----
> From: Srinath Parvathaneni <srinath.parvathan...@arm.com>
> Sent: 16 June 2020 11:52
> To: gcc-patches@gcc.gnu.org
> Cc: Kyrylo Tkachov <kyrylo.tkac...@arm.com>
> Subject: [PATCH][GCC-10 Backport] arm: Fix unintentional fall throughs in
> arm.c
>
> Hi all,
>
> This small patch fix some unintentional fall-throughs in
> `mve_vector_mem_operand'.
>
> Regtested and bootstraped on arm-linux-gnueabihf.
>
> Okay for GCC-10 branch?
Ok.
Thanks,
Kyrill
>
> Regards,
> Srinath
>
> gcc/ChangeLog
>
> 2020-06-09 Srinath Parvathaneni <srinath.parvathan...@arm.com>
>
> Backported from mainline
> 2020-05-28 Andrea Corallo <andrea.cora...@arm.com>
>
> * config/arm/arm.c (mve_vector_mem_operand): Fix unwanted
> fall-throughs.
>
>
> ############### Attachment also inlined for ease of reply
> ###############
>
>
> diff --git a/gcc/config/arm/arm.c b/gcc/config/arm/arm.c
> index
> 01bc1b8ae9b72700ca5ae0840ee4496fd686b623..a7b7c55a763c66382bc140a
> 4c504840c509df84c 100644
> --- a/gcc/config/arm/arm.c
> +++ b/gcc/config/arm/arm.c
> @@ -13302,26 +13302,31 @@ mve_vector_mem_operand (machine_mode
> mode, rtx op, bool strict)
> if (abs_hwi (val))
> return ((reg_no < LAST_ARM_REGNUM && reg_no != SP_REGNUM)
> || (!strict && reg_no >= FIRST_PSEUDO_REGISTER));
> + return FALSE;
> case E_V8HImode:
> case E_V8HFmode:
> if (abs (val) <= 255)
> return ((reg_no < LAST_ARM_REGNUM && reg_no != SP_REGNUM)
> || (!strict && reg_no >= FIRST_PSEUDO_REGISTER));
> + return FALSE;
> case E_V8QImode:
> case E_V4QImode:
> if (abs_hwi (val))
> return (reg_no <= LAST_LO_REGNUM
> || (!strict && reg_no >= FIRST_PSEUDO_REGISTER));
> + return FALSE;
> case E_V4HImode:
> case E_V4HFmode:
> if (val % 2 == 0 && abs (val) <= 254)
> return (reg_no <= LAST_LO_REGNUM
> || (!strict && reg_no >= FIRST_PSEUDO_REGISTER));
> + return FALSE;
> case E_V4SImode:
> case E_V4SFmode:
> if (val % 4 == 0 && abs (val) <= 508)
> return ((reg_no < LAST_ARM_REGNUM && reg_no != SP_REGNUM)
> || (!strict && reg_no >= FIRST_PSEUDO_REGISTER));
> + return FALSE;
> case E_V2DImode:
> case E_V2DFmode:
> case E_TImode:
