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-rw-r--r--include/llvm/CodeGen/SelectionDAGNodes.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/include/llvm/CodeGen/SelectionDAGNodes.h b/include/llvm/CodeGen/SelectionDAGNodes.h
index dbb12947f2..73edcb8d49 100644
--- a/include/llvm/CodeGen/SelectionDAGNodes.h
+++ b/include/llvm/CodeGen/SelectionDAGNodes.h
@@ -377,6 +377,8 @@ namespace ISD {
// extending the low 8 bits of a 32-bit register to fill the top 24 bits
// with the 7th bit). The size of the smaller type is indicated by the 1th
// operand, a ValueType node.
+ // Note that there is intentionally no corresponding ZERO_EXTEND_INREG; an
+ // AND with an appropriate constant is used instead.
SIGN_EXTEND_INREG,
/// FP_TO_[US]INT - Convert a floating point value to a signed or unsigned