[all-commits] [llvm/llvm-project] ee1d5f: [MC] Check if register is non-null before calling ...

[Sergei Barannikov via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: ee1d5f637286bda762de76dfc33143abd52c5460
      https://github.com/llvm/llvm-project/commit/ee1d5f637286bda762de76dfc33143abd52c5460
  Author: Sergei Barannikov <barannikov88 at gmail.com>
  Date:   2023-05-25 (Thu, 25 May 2023)

  Changed paths:
    M bolt/lib/Core/MCPlusBuilder.cpp
    M llvm/lib/MC/MCInstrDesc.cpp

  Log Message:
  -----------
  [MC] Check if register is non-null before calling isSubRegisterEq (NFCI)

D151036 adds an assertions that prohibits iterating over sub- and
super-registers of a null register. This is already the case when
iterating over register units of a null register, and worked by
accident for sub- and super-registers.

Reviewed By: Amir

Differential Revision: https://reviews.llvm.org/D151285