Change LegalFPImmediates to use APFloat.
Add APFloat interfaces to ConstantFP, SelectionDAG.
Fix integer bit in double->APFloat conversion.
Convert LegalizeDAG to use APFloat interface in
ConstantFPSDNode uses.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41587 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/Alpha/AlphaISelLowering.cpp b/lib/Target/Alpha/AlphaISelLowering.cpp
index adbf322..faeb791 100644
--- a/lib/Target/Alpha/AlphaISelLowering.cpp
+++ b/lib/Target/Alpha/AlphaISelLowering.cpp
@@ -142,8 +142,8 @@
 
   setOperationAction(ISD::ConstantFP, MVT::f64, Expand);
   setOperationAction(ISD::ConstantFP, MVT::f32, Expand);
-  addLegalFPImmediate(+0.0); //F31
-  addLegalFPImmediate(-0.0); //-F31
+  addLegalFPImmediate(APFloat(+0.0)); //F31
+  addLegalFPImmediate(APFloat(-0.0)); //-F31
 
   setJumpBufSize(272);
   setJumpBufAlignment(16);