Re: [Qemu-devel] [PATCH] target/arm: Honour FPCR.FZ in FRECPX

2018-05-21 Thread Richard Henderson
On 05/21/2018 10:27 AM, Peter Maydell wrote: > The FRECPX instructions should (like most other floating point operations) > honour the FPCR.FZ bit which specifies whether input denormals should > be flushed to zero (or FZ16 for the half-precision version). > We forgot to implement this, which doesn

[Qemu-devel] [PATCH] target/arm: Honour FPCR.FZ in FRECPX

2018-05-21 Thread Peter Maydell
The FRECPX instructions should (like most other floating point operations) honour the FPCR.FZ bit which specifies whether input denormals should be flushed to zero (or FZ16 for the half-precision version). We forgot to implement this, which doesn't affect the results (since the calculation doesn't