[all-commits] [llvm/llvm-project] f454c9: [InlineSpiller] Re-tie operands if folding failed

[serguei-katkov via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: f454c9f102a7f0df9d2802e30538192d4fe2f97a
      https://github.com/llvm/llvm-project/commit/f454c9f102a7f0df9d2802e30538192d4fe2f97a
  Author: Serguei Katkov <serguei.katkov at azul.com>
  Date:   2021-01-13 (Wed, 13 Jan 2021)

  Changed paths:
    M llvm/lib/CodeGen/InlineSpiller.cpp

  Log Message:
  -----------
  [InlineSpiller] Re-tie operands if folding failed

InlineSpiller::foldMemoryOperand unties registers before an attempt to fold and
does not restore tied-ness in case of failure.

I do not have a particular test for demo of invalid behavior.
This is something of clean-up.
It is better to keep the behavior correct in case some time in future it happens.

Reviewers: reames, dantrushin
Reviewed By: dantrushin, reames
Subscribers: llvm-commits
Differential Revision: https://reviews.llvm.org/D94389