[all-commits] [llvm/llvm-project] 370880: [InstCombine] Fold icmp into phi beyond the same BB.

[bipmis via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 370880cdcc487298fd30628cad1a3671ba1c5f5c
      https://github.com/llvm/llvm-project/commit/370880cdcc487298fd30628cad1a3671ba1c5f5c
  Author: bipmis <biplob.mishra at arm.com>
  Date:   2023-09-07 (Thu, 07 Sep 2023)

  Changed paths:
    M compiler-rt/test/dfsan/conditional_callbacks.c
    M llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp
    M llvm/test/Transforms/InstCombine/icmp-constant-phi.ll
    M llvm/test/Transforms/InstCombine/phi.ll

  Log Message:
  -----------
  [InstCombine] Fold icmp into phi beyond the same BB.

The icmp is being folded in phi only if they belong in the same BB.
This patch extends the same beyond the BB.
Have seen scenarios where this seems to be beneficial.

Differential Revision: https://reviews.llvm.org/D157740