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authorDale Johannesen <dalej@apple.com>2008-03-05 19:14:03 +0000
committerDale Johannesen <dalej@apple.com>2008-03-05 19:14:03 +0000
commit0ea0356dff38dfd0420b8c0a2fdf2fae7898c024 (patch)
treeb324d28571514f208f3d7300211884311800b015 /include/llvm/CodeGen
parent327d0651f8c3b1480d8fc1f4d96e07a1452eaa8c (diff)
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Clarify that CALLSEQ_START..END may not be nested,
and add some protection against creating such. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47957 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'include/llvm/CodeGen')
-rw-r--r--include/llvm/CodeGen/SelectionDAGNodes.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/llvm/CodeGen/SelectionDAGNodes.h b/include/llvm/CodeGen/SelectionDAGNodes.h
index afd1e78..025e9ec 100644
--- a/include/llvm/CodeGen/SelectionDAGNodes.h
+++ b/include/llvm/CodeGen/SelectionDAGNodes.h
@@ -529,6 +529,7 @@ namespace ISD {
// a call sequence, and carry arbitrary information that target might want
// to know. The first operand is a chain, the rest are specified by the
// target and not touched by the DAG optimizers.
+ // CALLSEQ_START..CALLSEQ_END pairs may not be nested.
CALLSEQ_START, // Beginning of a call sequence
CALLSEQ_END, // End of a call sequence