[PHI decoupling] add "cpu_info.h" to phi #48403
Merged
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Describe
在 phi 中只是使用了
fluid cpu_info.h
的部分宏,以及enum
,所以该pr只是迁移了这一部分内容另外,为了避免不同空间
enum
之间的类型错误(像paddle::platform::avx
->phi::backends::cpu::avx
),所以在 fluid 下的cpu_info.h
添加了使用phi::backends::cpu
命名空间