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From: Peter Maydell <peter.maydell@linaro.org>
To: Richard Henderson <rth@twiddle.net>
Cc: "Tom Musta" <tommusta@gmail.com>,
	"Peter Crosthwaite" <peter.crosthwaite@xilinx.com>,
	"Patch Tracking" <patches@linaro.org>,
	"Aurelien Jarno" <aurelien@aurel32.net>,
	"Michael Matz" <matz@suse.de>, "Alexander Graf" <agraf@suse.de>,
	"QEMU Developers" <qemu-devel@nongnu.org>,
	"Claudio Fontana" <claudio.fontana@linaro.org>,
	"Dirk Mueller" <dmueller@suse.de>,
	"Will Newton" <will.newton@linaro.org>,
	"Laurent Desnogues" <laurent.desnogues@gmail.com>,
	"Alex Bennée" <alex.bennee@linaro.org>,
	"kvmarm@lists.cs.columbia.edu" <kvmarm@lists.cs.columbia.edu>,
	"Christoffer Dall" <christoffer.dall@linaro.org>
Subject: Re: [Qemu-devel] [PATCH 03/22] softfloat: Add 16 bit integer to float conversions
Date: Tue, 31 Dec 2013 14:45:34 +0000	[thread overview]
Message-ID: <CAFEAcA82-ekdU7hyMPP+sPi6ZSmawjBxCkUi6m5Owbh7F4wNRg@mail.gmail.com> (raw)
In-Reply-To: <52C2D61E.4000804@twiddle.net>

On 31 December 2013 14:35, Richard Henderson <rth@twiddle.net> wrote:
> On 12/31/2013 06:27 AM, Peter Maydell wrote:
>> The existing int32_to_float* functions take int32, not int32_t,
>> so this is the same semantics. You could argue that it would
>> be better for all of them to take the exact type rather than
>> the at-least-this-big type (it would let me drop a cast in the
>> ARM code that calls these), I suppose.
>
> Yes, that's what I'm arguing.  Of course, I'd forgotten that we already have
> that problem, since my eyes refuse to see the lack of "_t" there.  But is that
> existing bug any reason to extend the problem?

OK, let's make this one return int16_t. I may throw in an extra patch
making the other int-to-float routines take the precise types too.

> One of these days we should just clean up all the crap formatting, bogus types,
> and stupid STATUS_* macros...

Yes, the STATUS_ stuff is definitely on my list to zap, once we get
all this stuff reviewed and committed (since it would otherwise
cause conflicts all over the place).

I think the standing question about the types is whether we should be
converting int32 to int32_t or int_fast32_t (and indeed whether it
makes much performance difference). That's why we have the current
setup where some of the intfoo got changed to int_fastfoo_t and
some didn't.

My other hope for this year is that we can clear up the relicensing
stuff so I don't have to keep prodding people about specifying the
2a-or-2b stuff on new patches...

thanks
-- PMM

  reply	other threads:[~2013-12-31 14:46 UTC|newest]

Thread overview: 42+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-12-31 13:35 [Qemu-devel] [PATCH 00/22] A64 decoder patchset 6: rest of floating point Peter Maydell
2013-12-31 13:35 ` [Qemu-devel] [PATCH 01/22] softfloat: Fix exception flag handling for float32_to_float16() Peter Maydell
2013-12-31 13:35 ` [Qemu-devel] [PATCH 02/22] softfloat: Add float to 16bit integer conversions Peter Maydell
2013-12-31 14:18   ` Richard Henderson
2013-12-31 14:22     ` Peter Maydell
2013-12-31 14:29       ` Richard Henderson
2013-12-31 13:35 ` [Qemu-devel] [PATCH 03/22] softfloat: Add 16 bit integer to float conversions Peter Maydell
2013-12-31 14:21   ` Richard Henderson
2013-12-31 14:27     ` Peter Maydell
2013-12-31 14:35       ` Richard Henderson
2013-12-31 14:45         ` Peter Maydell [this message]
2013-12-31 13:35 ` [Qemu-devel] [PATCH 04/22] softfloat: Fix float64_to_uint64 Peter Maydell
2013-12-31 13:35 ` [Qemu-devel] [PATCH 05/22] softfloat: Only raise Invalid when conversions to int are out of range Peter Maydell
2013-12-31 13:35 ` [Qemu-devel] [PATCH 06/22] softfloat: Fix factor 2 error for scalbn on denormal inputs Peter Maydell
2013-12-31 13:35 ` [Qemu-devel] [PATCH 07/22] softfloat: Add float32_to_uint64() Peter Maydell
2013-12-31 13:35 ` [Qemu-devel] [PATCH 08/22] softfloat: Fix float64_to_uint64_round_to_zero Peter Maydell
2013-12-31 14:23   ` Richard Henderson
2013-12-31 13:35 ` [Qemu-devel] [PATCH 09/22] softfloat: Fix float64_to_uint32 Peter Maydell
2013-12-31 14:24   ` Richard Henderson
2013-12-31 13:35 ` [Qemu-devel] [PATCH 10/22] softfloat: Fix float64_to_uint32_round_to_zero Peter Maydell
2013-12-31 14:24   ` Richard Henderson
2013-12-31 13:35 ` [Qemu-devel] [PATCH 11/22] softfloat: Provide complete set of accessors for fp state Peter Maydell
2013-12-31 14:26   ` Richard Henderson
2013-12-31 13:35 ` [Qemu-devel] [PATCH 12/22] softfloat: Factor out RoundAndPackFloat16 and NormalizeFloat16Subnormal Peter Maydell
2013-12-31 13:35 ` [Qemu-devel] [PATCH 13/22] softfloat: Add float16 <=> float64 conversion functions Peter Maydell
2013-12-31 13:35 ` [Qemu-devel] [PATCH 14/22] softfloat: Add support for ties-away rounding Peter Maydell
2013-12-31 14:51   ` Richard Henderson
2013-12-31 14:56     ` Peter Maydell
2013-12-31 14:59       ` Richard Henderson
2013-12-31 13:35 ` [Qemu-devel] [PATCH 15/22] target-arm: Prepare VFP_CONV_FIX helpers for A64 uses Peter Maydell
2013-12-31 15:00   ` Richard Henderson
2013-12-31 13:35 ` [Qemu-devel] [PATCH 16/22] target-arm: Rename A32 VFP conversion helpers Peter Maydell
2013-12-31 15:04   ` Richard Henderson
2013-12-31 13:35 ` [Qemu-devel] [PATCH 17/22] target-arm: Ignore most exceptions from scalbn when doing fixpoint conversion Peter Maydell
2013-12-31 15:17   ` Richard Henderson
2013-12-31 13:35 ` [Qemu-devel] [PATCH 18/22] target-arm: A64: Add extra VFP fixed point conversion helpers Peter Maydell
2013-12-31 15:18   ` Richard Henderson
2013-12-31 13:35 ` [Qemu-devel] [PATCH 19/22] target-arm: A64: Add "Floating-point<->fixed-point" instructions Peter Maydell
2013-12-31 13:35 ` [Qemu-devel] [PATCH 20/22] target-arm: A64: Add floating-point<->integer conversion instructions Peter Maydell
2013-12-31 13:35 ` [Qemu-devel] [PATCH 21/22] target-arm: A64: Add 1-source 32-to-32 and 64-to-64 FP instructions Peter Maydell
2013-12-31 13:35 ` [Qemu-devel] [PATCH 22/22] target-arm: A64: Add support for FCVT between half, single and double Peter Maydell
2014-01-02 19:12 ` [Qemu-devel] [PATCH 00/22] A64 decoder patchset 6: rest of floating point Tom Musta

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