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changeset 18:5abb684876c4

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report error when code segment's tail call flag was changed false
author Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
date Sun, 06 Oct 2013 00:17:31 +0900
parents 5e1f5bc27634
children 29d31faaa39e
files lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
diffstat 1 files changed, 6 insertions(+), 0 deletions(-) [+]
line wrap: on
line diff
--- a/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp	Sat Oct 05 22:04:18 2013 +0900
+++ b/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp	Sun Oct 06 00:17:31 2013 +0900
@@ -5296,6 +5296,12 @@
          "Non-null chain expected with non-tail call!");
   assert((Result.second.getNode() || !Result.first.getNode()) &&
          "Null value expected with tail call!");
+#ifndef noCbC
+  // if code segment's tail call flag was changed false , we report it on error.
+  if (CLI.RetTy->is__CodeTy() && CS.getCaller()->getReturnType()->is__CodeTy() && !isTailCall)
+    DAG.getContext()->emitError(CS.getInstruction(),CS.getCalledFunction()->getName() + 
+			       " is code segment which called by code segment but its tail call flag was changed false!");
+#endif
   if (Result.first.getNode()) {
     setValue(CS.getInstruction(), Result.first);
   } else if (!CanLowerReturn && Result.second.getNode()) {