[all-commits] [llvm/llvm-project] 779679: Revert "[InstCombine] Remove early constant fold"

[Vitaly Buka via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 779679284e99f70e741c303f14573b2b9cbea232
      https://github.com/llvm/llvm-project/commit/779679284e99f70e741c303f14573b2b9cbea232
  Author: Vitaly Buka <vitalybuka at google.com>
  Date:   2023-02-24 (Fri, 24 Feb 2023)

  Changed paths:
    M llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp
    M llvm/lib/Transforms/InstCombine/InstructionCombining.cpp
    M llvm/test/Transforms/InstCombine/pr38677.ll

  Log Message:
  -----------
  Revert "[InstCombine] Remove early constant fold"

Increase compile time with ubsan ARM from 3 to 14 min single file.
I upload reproducer into D144369.

Also we have random timeouts on internal x86_64 builds.
Both bisected to this one.

This reverts commit 45a0b812fa13ec255cae91f974540a4d805a8d79.