Re: [Qemu-arm] [PATCH 34/42] target/arm: Convert the VCVT-from-f16 insns to decodetree

[Richard Henderson]

On 6/6/19 12:46 PM, Peter Maydell wrote:
> Convert the VCVTT, VCVTB instructions that deal with conversion
> from half-precision floats to f32 or 64 to decodetree.
> 
> Since we're no longer constrained to the old decoder's style
> using cpu_F0s and cpu_F0d we can perform a direct 16 bit
> load of the right half of the input single-precision register
> rather than loading the full 32 bits and then doing a
> separate shift or sign-extension.
> 
> Signed-off-by: Peter Maydell <address@hidden>
> ---
>  target/arm/translate-vfp.inc.c | 82 ++++++++++++++++++++++++++++++++++
>  target/arm/translate.c         | 56 +----------------------
>  target/arm/vfp.decode          |  6 +++
>  3 files changed, 89 insertions(+), 55 deletions(-)

Reviewed-by: Richard Henderson <address@hidden>


r~