[LowerAllowCheckPass] fix pipeline printing (#146000)

Author: fmayer

llvm/lib/Transforms/Instrumentation/LowerAllowCheckPass.cpp

@@ -182,11 +182,13 @@ void LowerAllowCheckPass::printPipeline(
   // correctness.
   // TODO: print shorter output by combining adjacent runs, etc.
   int i = 0;
+  bool printed = false;
   for (unsigned int cutoff : Opts.cutoffs) {
     if (cutoff > 0) {
-      if (i > 0)
+      if (printed)
         OS << ";";
       OS << "cutoffs[" << i << "]=" << cutoff;
+      printed = true;
     }
 
     i++;

llvm/test/Transforms/lower-builtin-allow-check-pipeline.ll

@@ -0,0 +1,3 @@
+; RUN: opt < %s -passes='require<profile-summary>,function(lower-allow-check<cutoffs[7]=0;cutoffs[8]=1>)' -S -o - -print-pipeline-passes | FileCheck %s
+
+; CHECK: lower-allow-check<cutoffs[8]=1>