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Re: [Qemu-devel] [PATCH 0/7] Define "deposit" tcg operation
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From: |
Richard Henderson |
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Subject: |
Re: [Qemu-devel] [PATCH 0/7] Define "deposit" tcg operation |
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Date: |
Fri, 07 Jan 2011 15:37:47 -0800 |
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User-agent: |
Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.2.13) Gecko/20101209 Fedora/3.1.7-0.35.b3pre.fc14 Thunderbird/3.1.7 |
On 01/07/2011 03:10 PM, Peter Maydell wrote:
> Unless I've missed something, deposit_i32 is basically the same
> as the ARM BFI instruction, so for ARM we could use deposit_i32 in
> the implementation of BFI (and conversely implement deposit_i32
> using BFI when we're generating for an ARMv6T2 or better host.)
That's correct.
I'll admit to not knowing the arm/thumb variants very well. While
I can see that gcc sometimes implements its similar "insv" operation
with BFC and BFI, knowing under what conditions those are available
is ... slightly complex to say the least.
r~
- Re: [Qemu-devel] Re: [PATCH 5/7] tcg-i386: Implement deposit operation., (continued)
[Qemu-devel] [PATCH 2/7] tcg-ppc: Implement deposit operation., Richard Henderson, 2011/01/07
[Qemu-devel] [PATCH 1/7] tcg: Define "deposit" as an optional operation., Richard Henderson, 2011/01/07
Re: [Qemu-devel] [PATCH 0/7] Define "deposit" tcg operation, Peter Maydell, 2011/01/07
- Re: [Qemu-devel] [PATCH 0/7] Define "deposit" tcg operation,
Richard Henderson <=