[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
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