[PATCH 2/2][MSP430] Optimize zero_extend insns and PSImode pointer manipulation

[Jozef Lawrynowicz]

On Mon, Oct 14, 2019 at 10:22 PM Jeff Law <law@redhat.com> wrote:
>
> On 10/8/19 4:39 AM, Jozef Lawrynowicz wrote:
> > This patch has the functional changes to optimize zero_extend insns and pointer
> > manipulation in the large memory model.
> >
> >
> > 0002-MSP430-PSImode-pointer-manipulation-and-zero-extend-.patch
> >
> > From f8156e115c4743ce94a86835ffa5601b6d28a555 Mon Sep 17 00:00:00 2001
> > From: Jozef Lawrynowicz <jozef.l@mittosystems.com>
> > Date: Mon, 7 Oct 2019 11:44:16 +0100
> > Subject: [PATCH 2/2] MSP430: PSImode pointer manipulation and zero extend insn
> >  optimizations
> >
> > gcc/ChangeLog:
> >
> > 2019-10-08  Jozef Lawrynowicz  <jozef.l@mittosystems.com>
> >
> >       * config/msp430/msp430.md (movqipsi): New.
> >       (zero_extendqipsi2): New.
> >       (zero_extendqisi2): Optimize case where src register and base dst
> >       register are the same.
> >       (zero_extendhipsi2): Don't use 430X insn for rYs->r case.
> >       (zero_extendpsisi2): Optimize r->m case.
> >       Add unnamed insn patterns to catch insns combine searches for when
> >       optimizing pointer manipulation.
> So you've got a movqipsi and zero_extendqipsi2 with the same RTL
> structure.  ISTM the movqipsi should just get removed.

Thanks, fixed and applied.
Jozef
>
>
> OK with that change.
>
> jeff