[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [Qemu-devel] [PATCH] fpu/softfloat: Replace countLeadingZeros32/64 w
From: |
Richard Henderson |
Subject: |
Re: [Qemu-devel] [PATCH] fpu/softfloat: Replace countLeadingZeros32/64 with clz32/64 |
Date: |
Mon, 1 Oct 2018 09:03:34 -0500 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.0 |
On 9/28/18 2:01 AM, Thomas Huth wrote:
> Our minimum required compiler for compiling QEMU is GCC 4.1 these days,
> so we can drop the support for compilers which do not provide the
> __builtin_clz*() functions yet. Since the countLeadingZeros32/64 are
> then identical to the clz32/64 functions, and we do not have to sync
> the softloat 2 codebase with upstream anymore (softloat 3 is a complete
> rewrite) we can simply replace the functions with our QEMU versions.
>
> Suggested-by: Peter Maydell <address@hidden>
> Signed-off-by: Thomas Huth <address@hidden>
> ---
> fpu/softfloat.c | 26 ++++++-------
> include/fpu/softfloat-macros.h | 87
> ------------------------------------------
> 2 files changed, 13 insertions(+), 100 deletions(-)
Reviewed-by: Richard Henderson <address@hidden>
r~
- Re: [Qemu-devel] [PATCH] fpu/softfloat: Replace countLeadingZeros32/64 with clz32/64,
Richard Henderson <=