From: Devang Patel <dpatel@apple.com>
Date: Wed, 17 Mar 2010 23:52:37 +0000 (+0000)
Subject: Debug info intrinsic does not intefer during tail call optimization.
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=c3188ce0f1ff2d1b830702a93134905b9719f410;p=oota-llvm.git

Debug info intrinsic does not intefer during tail call optimization.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98778 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp b/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
index 11293e47f64..07dc2384a98 100644
--- a/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
+++ b/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
@@ -4282,6 +4282,9 @@ isInTailCallPosition(CallSite CS, Attributes CalleeRetAttr,
          --BBI) {
       if (&*BBI == I)
         break;
+      // Debug info intrinsic does not intefer during tail call optimization.
+      if (isa<DbgInfoIntrinsic>(BBI))
+        continue;
       if (BBI->mayHaveSideEffects() || BBI->mayReadFromMemory() ||
           !BBI->isSafeToSpeculativelyExecute())
         return false;