Simon Pilgrim c7bebcbfd8 [X86][AVX] Match broadcast loads through a bitcast
AVX1 v8i32/v4i64 shuffles are bitcasted to v8f32/v4f64, this patch peeks through any bitcast to check for a load node to allow broadcasts to occur.

This is a re-commit of r257055 after r257264 fixed 32-bit broadcast loads of i64 scalars.

llvm-svn: 257266
2016-01-09 20:59:39 +00:00
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