[llvm-commits] [llvm] r99436 - in /llvm/trunk/lib/Target/ARM: ARMInstrFormats.td ARMInstrInfo.td ARMInstrVFP.td ARMSubtarget.cpp ARMSubtarget.h

Anton Korobeynikov anton at korobeynikov.info
Thu Mar 25 08:42:37 PDT 2010


Hello, Jim

> Have you run benchmarks on other variants showing the instructions to be a win? This looks to be a pretty fundamental flaw in the VFP unit.
This is pretty expected on A8, where VFP unit is not pipelined at all
(aka "VFP-lite").
However, for example, on A9 VFP is pipelined and these instructions
should behave properly.

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



More information about the llvm-commits mailing list