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/Support/APFloat.cpp b/lib/Support/APFloat.cpp
index d2e52ad..47ec9ee 100644
--- a/lib/Support/APFloat.cpp
+++ b/lib/Support/APFloat.cpp
@@ -1617,7 +1617,7 @@
     sign = mysign;
     category = fcNormal;
     exponent = myexponent - 1023;
-    *significandParts() = mysignificand | 0x100000000000000LL;
+    *significandParts() = mysignificand | 0x10000000000000LL;
   }
 }