Re: [PATCH, ARM] Work around erratum in VFP9

2014-07-03 Thread Bin.Cheng
On Thu, Jul 3, 2014 at 4:15 PM, Richard Earnshaw wrote: > The VFP9 floating-point unit (as occasionally used with ARM9 devices) > has an erratum (760019) whereby it is possible for floating-point > division and square-root instructions to be executed twice. This is not > a problem if the destinat

[PATCH, ARM] Work around erratum in VFP9

2014-07-03 Thread Richard Earnshaw
The VFP9 floating-point unit (as occasionally used with ARM9 devices) has an erratum (760019) whereby it is possible for floating-point division and square-root instructions to be executed twice. This is not a problem if the destination register is not used as an input, but can cause incorrect res