diff options
| -rw-r--r-- | lib/CodeGen/SelectionDAG/LegalizeDAG.cpp | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp b/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp index a60b871937..a3fc3a3552 100644 --- a/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp +++ b/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp @@ -253,13 +253,15 @@ void SelectionDAGLegalize::LegalizeDAG() { /// FindCallEndFromCallStart - Given a chained node that is part of a call /// sequence, find the CALLSEQ_END node that terminates the call sequence. static SDNode *FindCallEndFromCallStart(SDNode *Node, int depth = 0) { + // Nested CALLSEQ_START/END constructs aren't yet legal, + // but we can DTRT and handle them correctly here. if (Node->getOpcode() == ISD::CALLSEQ_START) depth++; else if (Node->getOpcode() == ISD::CALLSEQ_END) { - depth--; - if (depth == 0) - return Node; - } + depth--; + if (depth == 0) + return Node; + } if (Node->use_empty()) return 0; // No CallSeqEnd |