adding avx register support to x86_32 as well as x86_64?

Carter Schonwald carter.schonwald at
Mon Jul 8 20:57:28 CEST 2013

Hey All,
Is there any reasons *not* to add SSE / AVX register support  to the llvm
32 bit x86 ghc calling convention? It looks like (as with x86_64) that
adding additional simd registers to the calling convention would be fully
backwards compatible with current ghc approach to 32bit function calls, but
would allow ghc 32bit (at some future point) to have decent floating point
performance when applicable.

I'm ok either way, but would be helpful to get some opinions.

just to recap, i'm working on getting a patch sorted out for adding AVX
support to the ghc x86_64 LLVM calling convention, and now would be a good time
to add anything to the 32bit x86 calling convention

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