Correctly report modified status for TailRecursionElimination

Differential Revision: https://reviews.llvm.org/D81232
2020-06-04 22:24:03 +02:00 · 2020-06-04 22:24:03 +02:00 · f987cceb13
parent 1086d777be
commit f987cceb13
1 changed files with 1 additions and 1 deletions
--- a/llvm/lib/Transforms/Scalar/TailRecursionElimination.cpp
+++ b/llvm/lib/Transforms/Scalar/TailRecursionElimination.cpp
@ -818,7 +818,7 @@ bool TailRecursionEliminator::eliminate(Function &F,
  // If this function is a varargs function, we won't be able to PHI the args
  // right, so don't even try to convert it...
  if (F.getFunctionType()->isVarArg())
-    return false;
+    return MadeChange;

  // If false, we cannot perform TRE on tail calls marked with the 'tail'
  // attribute, because doing so would cause the stack size to increase (real