Now that convertFromUnsignedParts has a sane, constant interface,
convertFromZeroExtendedInteger can be simplified as it doesn't need
to make a copy of the source bignum.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42734 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Support/APFloat.cpp b/lib/Support/APFloat.cpp
index 7e56c84..8343ffe 100644
--- a/lib/Support/APFloat.cpp
+++ b/lib/Support/APFloat.cpp
@@ -1594,9 +1594,7 @@
                                         roundingMode rounding_mode)
 {
   unsigned int partCount = partCountForBits(width);
-  opStatus status;
   APInt api = APInt(width, partCount, parts);
-  integerPart *copy = new integerPart[partCount];
 
   sign = false;
   if(isSigned && APInt::tcExtractBit(parts, width - 1)) {
@@ -1604,9 +1602,7 @@
     api = -api;
   }
 
-  APInt::tcAssign(copy, api.getRawData(), partCount);
-  status = convertFromUnsignedParts(copy, partCount, rounding_mode);
-  return status;
+  return convertFromUnsignedParts(api.getRawData(), partCount, rounding_mode);
 }
 
 APFloat::opStatus