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Re: [Qemu-devel] [PATCH v2 10/10] tcg/optimize: add constant folding for
From: |
Richard Henderson |
Subject: |
Re: [Qemu-devel] [PATCH v2 10/10] tcg/optimize: add constant folding for deposit |
Date: |
Fri, 21 Sep 2012 16:22:53 -0700 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:15.0) Gecko/20120828 Thunderbird/15.0 |
On 09/21/2012 12:43 PM, Aurelien Jarno wrote:
> + tmp = ((1ull << args[4]) - 1);
> + tmp = (temps[args[1]].val & ~(tmp << args[3]))
> + | ((temps[args[2]].val & tmp) << args[3]);
> + tcg_opt_gen_movi(gen_args, args[0], tmp);
We do have a deposit64 function in bitops.h, fwiw.
Though, really, bitops.h has some crappy functions in it that are
redundant with the better functions in host-utils.h...
r~
- [Qemu-devel] [PATCH v2 00/10] tcg/optimize: rework copy propagation, Aurelien Jarno, 2012/09/21
- [Qemu-devel] [PATCH v2 06/10] tcg/optimize: optimize "op r, a, a => movi r, 0", Aurelien Jarno, 2012/09/21
- [Qemu-devel] [PATCH v2 08/10] tcg/optimize: prefer the "op a, a, b" form for commutative ops, Aurelien Jarno, 2012/09/21
- [Qemu-devel] [PATCH v2 01/10] tcg/optimize: remove TCG_TEMP_ANY, Aurelien Jarno, 2012/09/21
- [Qemu-devel] [PATCH v2 10/10] tcg/optimize: add constant folding for deposit, Aurelien Jarno, 2012/09/21
- Re: [Qemu-devel] [PATCH v2 10/10] tcg/optimize: add constant folding for deposit,
Richard Henderson <=
- [Qemu-devel] [PATCH v2 02/10] tcg/optimize: check types in copy propagation, Aurelien Jarno, 2012/09/21
- [Qemu-devel] [PATCH v2 07/10] tcg/optimize: further optimize brcond/movcond/setcond, Aurelien Jarno, 2012/09/21
[Qemu-devel] [PATCH v2 09/10] tcg: remove #ifdef #endif around TCGOpcode tests, Aurelien Jarno, 2012/09/21
[Qemu-devel] [PATCH v2 04/10] tcg/optimize: do copy propagation for all operations, Aurelien Jarno, 2012/09/21