Allow custom lowered FP_TO_SINT ops in the check for whether a larger

FP_TO_SINT is preferred to a larger FP_TO_UINT.  This seems to be begging
for a TLI.isOperationCustom() helper function.

llvm-svn: 23992

1 files changed, 2 insertions, 1 deletions

diff --git a/llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp b/llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
index a065d90c6bc..e17a9080cc3 100644
--- a/llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
+++ b/llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
@@ -2266,7 +2266,8 @@ SDOperand SelectionDAGLegalize::PromoteOp(SDOperand Op) {
     // legal, such as PowerPC.
     if (Node->getOpcode() == ISD::FP_TO_UINT && 
         !TLI.isOperationLegal(ISD::FP_TO_UINT, NVT) &&
-        TLI.isOperationLegal(ISD::FP_TO_SINT, NVT)) {
+        (TLI.isOperationLegal(ISD::FP_TO_SINT, NVT) ||
+         TLI.getOperationAction(ISD::FP_TO_SINT, NVT)==TargetLowering::Custom)){
       Result = DAG.getNode(ISD::FP_TO_SINT, NVT, Tmp1);
     } else {
       Result = DAG.getNode(Node->getOpcode(), NVT, Tmp1);