[llvm] r339811 - DAG: Try to custom lower when promoting float operands

[Matt Arsenault via llvm-commits]

Author: arsenm
Date: Wed Aug 15 13:34:54 2018
New Revision: 339811

URL: http://llvm.org/viewvc/llvm-project?rev=339811&view=rev
Log:
DAG: Try to custom lower when promoting float operands

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

Modified:
    llvm/trunk/lib/CodeGen/SelectionDAG/LegalizeFloatTypes.cpp

Modified: llvm/trunk/lib/CodeGen/SelectionDAG/LegalizeFloatTypes.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/SelectionDAG/LegalizeFloatTypes.cpp?rev=339811&r1=339810&r2=339811&view=diff
==============================================================================
--- llvm/trunk/lib/CodeGen/SelectionDAG/LegalizeFloatTypes.cpp (original)
+++ llvm/trunk/lib/CodeGen/SelectionDAG/LegalizeFloatTypes.cpp Wed Aug 15 13:34:54 2018
@@ -1750,6 +1750,11 @@ static ISD::NodeType GetPromotionOpcode(
 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