[llvm-commits] LLVM patch to support ARM fused multiply add/subtract instructions

[Anton Korobeynikov]

Hi Ana,

> Regarding accuracy, what I know is that Qualcomm provides IEEE-754 2008 specified result. This means the multiply is performed without any loss of accuracy (i.e., no rounding) and then the add/subtract operation happens. The final result is rounded according to the configured rounding mode in the VFP unit.
In which case multiply is performed w/o loss of accuracy? FMA mode? Of
usual VMLA?

-- 
With best regards, Anton Korobeynikov
Faculty of Mathematics and Mechanics, Saint Petersburg State University