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WIP: i32 gemm experiment #28

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WIP: i32 gemm experiment #28

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Commits on Dec 1, 2018

  1. For fun, and experiment with i32 matrix multiply 

    There are no 64-bit multiplies in simd avx, so don't try that. i32 will
autovectorize on avx, so it's a bit fun.
    @bluss
    bluss committed Dec 1, 2018
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  2. TEST: Layout benchmarks for the i32 kernel too 

    Results shows the same information we know from packing from the other
implementations (the packing is all shared code and doesn't care about
the element. Only element size and kernel size).

running 8 tests
test layout_i32_032::ccc ... bench:       6,012 ns/iter (+/- 80)
test layout_i32_032::ccf ... bench:       6,010 ns/iter (+/- 68)
test layout_i32_032::cfc ... bench:       6,244 ns/iter (+/- 89)
test layout_i32_032::cff ... bench:       6,257 ns/iter (+/- 240)
test layout_i32_032::fcc ... bench:       5,806 ns/iter (+/- 320)
test layout_i32_032::fcf ... bench:       5,767 ns/iter (+/- 2,013)
test layout_i32_032::ffc ... bench:       6,005 ns/iter (+/- 187)
test layout_i32_032::fff ... bench:       6,031 ns/iter (+/- 187)
    @bluss
    bluss committed Dec 1, 2018
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  3. TEST: Add i32 gemm tests

    @bluss
    bluss committed Dec 1, 2018
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