[all-commits] [llvm/llvm-project] db08b0: [ARM][AArch64] Bail out if CandidatesWithoutStackF...

[Nikita Popov via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: db08b0999d1b42391e34ac0c469b92de98e9f550
      https://github.com/llvm/llvm-project/commit/db08b0999d1b42391e34ac0c469b92de98e9f550
  Author: Nikita Popov <npopov at redhat.com>
  Date:   2024-06-14 (Fri, 14 Jun 2024)

  Changed paths:
    M llvm/lib/Target/AArch64/AArch64InstrInfo.cpp
    M llvm/lib/Target/ARM/ARMBaseInstrInfo.cpp
    A llvm/test/CodeGen/ARM/machine-outliner-no-candidates-without-stack-fixup.ll

  Log Message:
  -----------
  [ARM][AArch64] Bail out if CandidatesWithoutStackFixups is empty (#95410)

The following code assumes that RepeatedSequenceLocs is non-empty. Bail
out if there are less than 2 candidates left, as no outlining is
possible in that case. The same check is already present in all the
other places where elements from RepeatedSequenceLocs may be dropped.

This fixes the issue reported at:
https://github.com/llvm/llvm-project/pull/93965#issuecomment-2151989716



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