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RE: [PATCH][GCC][Arm] Cleanup up reg to reg move in neon_mov.


Ping 😊

> -----Original Message-----
> From: gcc-patches-owner@gcc.gnu.org <gcc-patches-owner@gcc.gnu.org>
> On Behalf Of Tamar Christina
> Sent: Monday, July 23, 2018 17:52
> To: gcc-patches@gcc.gnu.org
> Cc: nd <nd@arm.com>; Ramana Radhakrishnan
> <Ramana.Radhakrishnan@arm.com>; Richard Earnshaw
> <Richard.Earnshaw@arm.com>; nickc@redhat.com; Kyrylo Tkachov
> <Kyrylo.Tkachov@arm.com>
> Subject: [PATCH][GCC][Arm] Cleanup up reg to reg move in neon_mov.
> 
> Hi All,
> 
> About 13 years ago the reg-to-reg patterns were split up, before that time
> output_move_double could actually handle this case.
> 
> After the split was done most patterns were updated except for *neon_mov
> which incorrectly retained reg,reg as a valid alternative.
> 
> However output_move_double can not handle this and simply returns ""
> and asserts.
> 
> This pattern is essentially dead and I'm removing it for clarity.
> 
> Regtested on armeb-none-eabi and no regressions.
> Bootstrapped on arm-none-linux-gnueabihf and no issues.
> 
> Ok for trunk?
> 
> Thanks,
> Tamar
> 
> gcc/
> 2018-07-23  Tamar Christina  <tamar.christina@arm.com>
> 
> 	* config/arm/neon.md (*neon_mov<mode>): Remove reg-to-reg
> alternative.
> 
> --

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