[ROCm] Implement float32 copy kernel #163869
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* Add `float32_copy_kernel` for vectorizing float16/bfloat16 to float32 conversion
🔗 Helpful Links🧪 See artifacts and rendered test results at hud.pytorch.org/pr/163869
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* Added float16 support
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cherry-pick of pytorch#163869
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cherry-pick of pytorch#163869
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cherry-pick of pytorch#163869
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cherry-pick of pytorch#163869
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cherry-pick of pytorch#163869
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* Add `float32_copy_kernel` for vectorizing float16/bfloat16 to float32 conversion Pull Request resolved: #163869 Approved by: https://github.com/jeffdaily
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cherry-pick of pytorch#163869 (cherry picked from commit dfd386f)
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cherry-pick of pytorch#163869 (cherry picked from commit dfd386f)
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cherry-pick of pytorch#163869 (cherry picked from commit dfd386f)
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float32_copy_kernelfor vectorizing float16/bfloat16 to float32 conversioncc @jeffdaily @sunway513 @jithunnair-amd @pruthvistony @ROCmSupport @dllehr-amd @jataylo @hongxiayang @naromero77amd