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1033648
2013 Oct 25
3
[LLVMdev] Is there pass to break down <4 x float> to scalars
Hi, LLVM community,
I write some code in hand using LLVM IR. for simplicity, I write them in <4
x float>. now I found some stores for elements are useless.
for example, If I store {0.0, 1.0, 2.0, 3.0} to a <4 x float> %a. maybe
only %a.xy is alive in my program. our target doesn't feature SIMD
instruction, which means we have to lower vector to many scalar
instructions. I found