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Re: [Qemu-devel] [PATCH 0/2] tcg/arm: Implement movcond_i32
From: |
Aurelien Jarno |
Subject: |
Re: [Qemu-devel] [PATCH 0/2] tcg/arm: Implement movcond_i32 |
Date: |
Wed, 17 Oct 2012 01:24:47 +0200 |
User-agent: |
Mutt/1.5.21 (2010-09-15) |
On Wed, Sep 26, 2012 at 07:48:53PM +0100, Peter Maydell wrote:
> These patches implement movcond_i32 for the ARM TCG backend; we
> emit "mov dst, v2; cmp c1, c2; movcc dst, v1". We could have
> done this with a pair of conditional movs, but (a) this is not
> actually any shorter (b) it means we don't get the common TCG
> code doing the work of avoiding "mov reg to itself" (c) conditional
> moves aren't quite as free as they used to be on the ARM7.
>
> (Tested using Aurelien's movcond-shift patches on the ARM frontend
> as something that will generate enough movconds.)
>
> Peter Maydell (2):
> tcg/arm: Factor out code to emit immediate or reg-reg op
> tcg/arm: Implement movcond_i32
>
> tcg/arm/tcg-target.c | 56
> +++++++++++++++++++++++++++-----------------------
> tcg/arm/tcg-target.h | 2 +-
> 2 files changed, 31 insertions(+), 27 deletions(-)
>
> --
> 1.7.9.5
>
Thanks, both applied.
--
Aurelien Jarno GPG: 1024D/F1BCDB73
address@hidden http://www.aurel32.net