[llvm-branch-commits] [BOLT] ICF-aware Indirect Call Promotion (PR #120493)

[Amir Ayupov via llvm-branch-commits]

https://github.com/aaupov created https://github.com/llvm/llvm-project/pull/120493

Indirect Call Promotion used to consider individual symbols in the call
profile. However, with ICF enabled, some symbols might get folded into
one function. Indirect Call Promotion should accumulate their counts to
check against the threshold and generate checks accordingly, one for
unique function.

Test Plan: added bolt/test/X86/icf-aware-icp.s