DAG: Try to custom lower when promoting float operands

For some reason this wasn't done for floats like
integers.

llvm-svn: 339811

1 files changed, 5 insertions, 0 deletions

diff --git a/llvm/lib/CodeGen/SelectionDAG/LegalizeFloatTypes.cpp b/llvm/lib/CodeGen/SelectionDAG/LegalizeFloatTypes.cpp
index 2e6f6edbce5..b6cce910228 100644
--- a/llvm/lib/CodeGen/SelectionDAG/LegalizeFloatTypes.cpp
+++ b/llvm/lib/CodeGen/SelectionDAG/LegalizeFloatTypes.cpp
@@ -1750,6 +1750,11 @@ static ISD::NodeType GetPromotionOpcode(EVT OpVT, EVT RetVT) {
 bool DAGTypeLegalizer::PromoteFloatOperand(SDNode *N, unsigned OpNo) {
   SDValue R = SDValue();
 
+  if (CustomLowerNode(N, N->getOperand(OpNo).getValueType(), false)) {
+    LLVM_DEBUG(dbgs() << "Node has been custom lowered, done\n");
+    return false;
+  }
+
   // Nodes that use a promotion-requiring floating point operand, but doesn't
   // produce a promotion-requiring floating point result, need to be legalized
   // to use the promoted float operand.  Nodes that produce at least one