[LLVMdev] SSE levels & x86 code-gen

[Chuck Rose III]

Hola LLVMers,

 

Our language has many vectors in it and I'm looking to make better use
of the SSE instructions on my chips.  Based on the experiments I did
last week and the help you gave me regarding generating the right IR to
generate sound SSE code, I'm ready to begin a major overhaul of our
system.  I have a big question remaining:  if I'm running on an x86
system which is, say SSE-1 only, and we're working with some double
vectors, what happens when we do a compile?  Does the compiler know to
scalarize those vectors and use different instructions? 

 

Thanks,

Chuck. 

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