1;; No instrumentation should be emitted if there are no counter increments. 2 3; RUN: opt < %s -instrprof -S | FileCheck %s 4; RUN: opt < %s -passes=instrprof -S | FileCheck %s 5; CHECK-NOT: @__profc 6; CHECK-NOT: @__profd 7; CHECK-NOT: @__llvm_profile_runtime 8 9define void @foo() { 10 ret void 11} 12