1; RUN: opt -disable-output -S -passes=print-ir-similarity < %s 2>&1 | FileCheck --allow-empty %s 2 3; This is a simple test to make sure the IRSimilarityPrinterPass returns 4; nothing when there is nothing to analyze. 5 6; CHECK-NOT: Found in 7 8define linkonce_odr void @fish() { 9entry: 10 ret void 11} 12