Make the comment for ScalarizeVectorOp mention that it is only for use
with single-element vectors.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37752 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp b/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
index 5f41452..bc94a62 100644
--- a/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
+++ b/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
@@ -177,8 +177,9 @@
/// two smaller values.
void SplitVectorOp(SDOperand O, SDOperand &Lo, SDOperand &Hi);
- /// ScalarizeVectorOp - Given an operand of vector type, convert it into the
- /// equivalent operation that returns a scalar value.
+ /// ScalarizeVectorOp - Given an operand of single-element vector type
+ /// (e.g. v1f32), convert it into the equivalent operation that returns a
+ /// scalar (e.g. f32) value.
SDOperand ScalarizeVectorOp(SDOperand O);
/// isShuffleLegal - Return true if a vector shuffle is legal with the
@@ -5602,8 +5603,9 @@
}
-/// ScalarizeVectorOp - Given an operand of vector type, convert it into the
-/// equivalent operation that returns a scalar (e.g. F32) value.
+/// ScalarizeVectorOp - Given an operand of single-element vector type
+/// (e.g. v1f32), convert it into the equivalent operation that returns a
+/// scalar (e.g. f32) value.
SDOperand SelectionDAGLegalize::ScalarizeVectorOp(SDOperand Op) {
assert(MVT::isVector(Op.getValueType()) &&
"Bad ScalarizeVectorOp invocation!");