llvm/test/CodeGen/X86/cfi-inserter-verify-inconsistent-loc.mir

# RUN: not --crash llc -o - %s -mtriple=x86_64-- \
# RUN:     -run-pass=cfi-instr-inserter 2>&1 | FileCheck %s
# Test that CSR being saved in multiple locations can be caught by
# an assertion.
--- |
  define void @inconsistentlocs() {
    bb.end:
      ret void
  }
...
---
# CHECK: LLVM ERROR: Different saved locations for the same CSR
name: inconsistentlocs
body: |
  bb.0:
    CFI_INSTRUCTION offset $r12, -8
    JCC_1 %bb.2, 5, implicit undef $eflags

  bb.1:
    CFI_INSTRUCTION offset $r12, -16

  bb.2.bb.end:
    RET 0
...