Debug info intrinsic does not intefer during tail call optimization.

llvm-svn: 98778
2010-03-17 23:52:37 +00:00 · 2010-03-17 23:52:37 +00:00 · 7976f6f03c
commit 7976f6f03c
parent 274a0d3794
1 changed files with 3 additions and 0 deletions
--- a/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
+++ b/llvm/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;