# REQUIRES: x86-registered-target

# RUN: cp -f %S/Inputs/prefix-never-matches.ll %t.ll
# RUN: %update_llc_test_checks %t.ll 2>&1 | FileCheck %s
# RUN: FileCheck --input-file=%t.ll %s --check-prefix=OUTPUT

# CHECK: WARNING: Prefix A had conflicting output
# OUTPUT-NOT: A: