[LLVMdev] X86 FMA4

[dag at cray.com]

We're migrating to LLVM 3.1 and trying to use the upstream FMA patterns.

Why is VFMADDSD4 defined with vector types?  Is this simply because the
gcc intrinsic uses vector types?  It's quite unnatural if you have a
compiler that generates FMAs as opposed to requiring user intrinsics.

                               -Dave