AdityaK f061b13175 Statically analyze likely and unlikely blocks based on metadata ...

The builtin_expect(), and C++20's likely, unlikely attributes assign branch_weights to annotated branches.

This patch adds the the ability to query branch !prof metadata and improve static analysis based on that.

Fixes: https://github.com/llvm/llvm-project/issues/64998

Reviewers: tejohnson, efriedma

Differential Revision: https://reviews.llvm.org/D159336

2023-09-12 11:28:15 -07:00

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