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-rw-r--r--include/llvm/OperandTraits.h7
1 files changed, 5 insertions, 2 deletions
diff --git a/include/llvm/OperandTraits.h b/include/llvm/OperandTraits.h
index 7c879c88f13ba..b614ccbc3777a 100644
--- a/include/llvm/OperandTraits.h
+++ b/include/llvm/OperandTraits.h
@@ -20,7 +20,7 @@
namespace llvm {
//===----------------------------------------------------------------------===//
-// FixedNumOperands Trait Class
+// FixedNumOperand Trait Class
//===----------------------------------------------------------------------===//
/// FixedNumOperandTraits - determine the allocation regime of the Use array
@@ -51,9 +51,12 @@ struct FixedNumOperandTraits {
};
//===----------------------------------------------------------------------===//
-// OptionalOperands Trait Class
+// OptionalOperand Trait Class
//===----------------------------------------------------------------------===//
+/// OptionalOperandTraits - when the number of operands may change at runtime.
+/// Naturally it may only decrease, because the allocations may not change.
+
template <unsigned ARITY = 1>
struct OptionalOperandTraits : public FixedNumOperandTraits<ARITY> {
static unsigned operands(const User *U) {