[PATCH] D62122: [NFC] Introduce SwitchInst wrapper for prof branch_weights handling

[Yevgeny Rouban via Phabricator via llvm-commits]

yrouban created this revision.
yrouban added reviewers: davidxl, eraman, reames, chandlerc.
Herald added a subscriber: hiraditya.
Herald added a project: LLVM.

This patch introduces a wrapper class that re-implements several mutator methods of //SwitchInst// to handle changes of prof branch_weights metadata along with remove/add switch case methods.
Subsequent patches will use this wrapper to implement prof branch_weights metadata handling for //SwitchInst//.

This patch is a redesigned way of prof branch_weights handling proposed in D60554 <https://reviews.llvm.org/D60554> and D60604 <https://reviews.llvm.org/D60604>. It does not change contract of SwitchInst.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D62122

Files:
  llvm/include/llvm/IR/Instructions.h
  llvm/lib/IR/Instructions.cpp

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