Haohai Wen 896037c75a [LoopRotate] Set loop back edge weight to not less than exit weight (#86496) ...

Branch weight from sample-based PGO may be not inaccurate due to
sampling. If the loop body must be executed, then origin loop back
edge weight must be not less than exit weight.

2024-03-28 20:07:15 +08:00

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