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Re: [Qemu-devel] [PATCH v2 17/24] target-arm: Prepare VFP_CONV_FIX helpe
From: |
Richard Henderson |
Subject: |
Re: [Qemu-devel] [PATCH v2 17/24] target-arm: Prepare VFP_CONV_FIX helpers for A64 uses |
Date: |
Mon, 06 Jan 2014 10:37:22 -0800 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:24.0) Gecko/20100101 Thunderbird/24.2.0 |
On 01/06/2014 05:11 AM, Peter Maydell wrote:
> From: Will Newton <address@hidden>
>
> Make the VFP_CONV_FIX helpers a little more flexible in
> preparation for the A64 uses. This requires two changes:
> * use the correct softfloat conversion function based on itype
> rather than always the int32 one; this is possible now that
> softfloat provides int16 versions and necessary for the
> future conversion-to-int64 A64 variants. This also allows
> us to drop the awkward 'sign' macro argument.
> * split the 'fsz' argument which currently controls both
> width of the input float type and width of the output
> integer type into two; this will allow us to specify the
> A64 64-bit-int-to-single conversion function, where the
> two widths are different.
>
> We can also drop the (itype##_t) cast now that softfloat
> guarantees that all the itype##_to_float* functions take
> an integer argument of exactly the correct type.
>
> Signed-off-by: Will Newton <address@hidden>
> Signed-off-by: Peter Maydell <address@hidden>
> ---
> target-arm/helper.c | 28 ++++++++++++++--------------
> 1 file changed, 14 insertions(+), 14 deletions(-)
Reviewed-by: Richard Henderson <address@hidden>
r~
- [Qemu-devel] [PATCH v2 00/24] A64 decoder patchset 6: rest of floating point, Peter Maydell, 2014/01/06
- [Qemu-devel] [PATCH v2 15/24] softfloat: Refactor code handling various rounding modes, Peter Maydell, 2014/01/06
- [Qemu-devel] [PATCH v2 06/24] softfloat: Only raise Invalid when conversions to int are out of range, Peter Maydell, 2014/01/06
- [Qemu-devel] [PATCH v2 22/24] target-arm: A64: Add floating-point<->integer conversion instructions, Peter Maydell, 2014/01/06
- [Qemu-devel] [PATCH v2 23/24] target-arm: A64: Add 1-source 32-to-32 and 64-to-64 FP instructions, Peter Maydell, 2014/01/06
- [Qemu-devel] [PATCH v2 17/24] target-arm: Prepare VFP_CONV_FIX helpers for A64 uses, Peter Maydell, 2014/01/06
- Re: [Qemu-devel] [PATCH v2 17/24] target-arm: Prepare VFP_CONV_FIX helpers for A64 uses,
Richard Henderson <=
- [Qemu-devel] [PATCH v2 07/24] softfloat: Fix factor 2 error for scalbn on denormal inputs, Peter Maydell, 2014/01/06
- [Qemu-devel] [PATCH v2 20/24] target-arm: A64: Add extra VFP fixed point conversion helpers, Peter Maydell, 2014/01/06
- [Qemu-devel] [PATCH v2 16/24] softfloat: Add support for ties-away rounding, Peter Maydell, 2014/01/06
- [Qemu-devel] [PATCH v2 10/24] softfloat: Fix float64_to_uint32, Peter Maydell, 2014/01/06
- [Qemu-devel] [PATCH v2 12/24] softfloat: Provide complete set of accessors for fp state, Peter Maydell, 2014/01/06
- [Qemu-devel] [PATCH v2 03/24] softfloat: Add 16 bit integer to float conversions, Peter Maydell, 2014/01/06
- [Qemu-devel] [PATCH v2 09/24] softfloat: Fix float64_to_uint64_round_to_zero, Peter Maydell, 2014/01/06
- [Qemu-devel] [PATCH v2 11/24] softfloat: Fix float64_to_uint32_round_to_zero, Peter Maydell, 2014/01/06