llvm/test/CodeGen/MIR/X86/tied-physical-regs-match.mir

# RUN: not --crash llc -march=x86-64 -run-pass none -o /dev/null %s 2>&1 | FileCheck %s
# This test ensures that the Machine Verifier detects tied physical registers
# that doesn't match.

--- |

  define i32 @foo() {
  entry:
    ret i32 0
  }

...
---
name:            foo
body: |
  bb.0.entry:
    liveins: $rdi

    ; CHECK: Tied physical registers must match.
    $rbx = AND64rm killed $rdx, killed $rdi, 1, _, 0, _, implicit-def dead $eflags
    RET64 $rbx
...