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yufenglee
previously approved these changes
Jul 7, 2020
yufenglee
approved these changes
Jul 7, 2020
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Description: In the Windows build, build min_max_elements.cpp with /ARCH:AVX to ensure that the vzeroupper instruction is emitted at the proper location. With the existing code, vzeroupper is happening before another pair of instructions that uses ymm registers. That leaves the processor in a state where SSE instructions run with poor performance. This is costing several milliseconds per inference for a quantized BERT.