[all-commits] [llvm/llvm-project] 4f5d93: [JumpThreading] Refactor ThreadEdge

[kazutakahirata via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: 4f5d931c5813a5f89250b427b2d3e8c63e03a0c6
      https://github.com/llvm/llvm-project/commit/4f5d931c5813a5f89250b427b2d3e8c63e03a0c6
  Author: Kazu Hirata <kazu at google.com>
  Date:   2019-11-21 (Thu, 21 Nov 2019)

  Changed paths:
    M llvm/include/llvm/Transforms/Scalar/JumpThreading.h
    M llvm/lib/Transforms/Scalar/JumpThreading.cpp

  Log Message:
  -----------
  [JumpThreading] Refactor ThreadEdge

Summary:
This patch moves various checks from ThreadEdge to new function
TryThreadEdge The rational behind this is that I'd like to use
ThreadEdge without its checks in my upcoming patch.

This patch preserves lightweight checks as assertions in ThreadEdge.
ThreadEdge does not repeat the cost check, however.

Reviewers: wmi

Subscribers: hiraditya, jfb, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D70338