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1221002
2012 Nov 07
1
[LLVMdev] AVX broadcast Vs. vector constant pool load
Hey guys,
I'm currently investigating broadcasts from the constant pool on Sandy
Bridge. I see this comment in llvm/lib/Target/X86/X86ISelLowering.cpp:
// Handle the broadcasting a single constant scalar from the constant
pool
// into a vector. On Sandybridge it is still better to load a constant
vector
// from the constant pool and not to broadcast it from a scalar.
Would anyone