在 2024/7/31 下午6:25, Xi Ruoyao 写道:
On Wed, 2024-07-31 at 16:57 +0800, Lulu Cheng wrote:
在 2024/7/29 下午3:58, Xi Ruoyao 写道:
Per a gcc-help thread we are generating sub-optimal code for
__builtin_bswap{32,64}. To fix it:
- Use a single revb.d instruction for bswapdi2.
- Use a single revb.2w ins
On Wed, 2024-07-31 at 16:57 +0800, Lulu Cheng wrote:
>
> 在 2024/7/29 下午3:58, Xi Ruoyao 写道:
> > Per a gcc-help thread we are generating sub-optimal code for
> > __builtin_bswap{32,64}. To fix it:
> >
> > - Use a single revb.d instruction for bswapdi2.
> > - Use a single revb.2w instruction for bs
在 2024/7/29 下午3:58, Xi Ruoyao 写道:
Per a gcc-help thread we are generating sub-optimal code for
__builtin_bswap{32,64}. To fix it:
- Use a single revb.d instruction for bswapdi2.
- Use a single revb.2w instruction for bswapsi2 for TARGET_64BIT,
revb.2h + rotri.w for !TARGET_64BIT.
- Use a s
Per a gcc-help thread we are generating sub-optimal code for
__builtin_bswap{32,64}. To fix it:
- Use a single revb.d instruction for bswapdi2.
- Use a single revb.2w instruction for bswapsi2 for TARGET_64BIT,
revb.2h + rotri.w for !TARGET_64BIT.
- Use a single revb.2h instruction for bswapsi2
