Add a "loses information" return value to APFloat::convert

and APFloat::convertToInteger.  Restore return value to
IEEE754.  Adjust all users accordingly.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@57329 91177308-0d34-0410-b5e6-96231b3b80d8

2 files changed, 5 insertions, 4 deletions

diff --git a/include/llvm/ADT/APFloat.h b/include/llvm/ADT/APFloat.h
index 8566a57..f6456a0 100644
--- a/include/llvm/ADT/APFloat.h
+++ b/include/llvm/ADT/APFloat.h
@@ -216,9 +216,9 @@ namespace llvm {
     void copySign(const APFloat &);
 
     /* Conversions.  */
-    opStatus convert(const fltSemantics &, roundingMode);
+    opStatus convert(const fltSemantics &, roundingMode, bool *);
     opStatus convertToInteger(integerPart *, unsigned int, bool,
-                              roundingMode) const;
+                              roundingMode, bool *) const;
     opStatus convertFromAPInt(const APInt &,
                               bool, roundingMode);
     opStatus convertFromSignExtendedInteger(const integerPart *, unsigned int,
@@ -299,7 +299,7 @@ namespace llvm {
     opStatus handleOverflow(roundingMode);
     bool roundAwayFromZero(roundingMode, lostFraction, unsigned int) const;
     opStatus convertToSignExtendedInteger(integerPart *, unsigned int, bool,
-                                          roundingMode) const;
+                                          roundingMode, bool *) const;
     opStatus convertFromUnsignedParts(const integerPart *, unsigned int,
                                       roundingMode);
     opStatus convertFromHexadecimalString(const char *, roundingMode);
diff --git a/include/llvm/CodeGen/SelectionDAGNodes.h b/include/llvm/CodeGen/SelectionDAGNodes.h
index 8ab6152..e1d1eda 100644
--- a/include/llvm/CodeGen/SelectionDAGNodes.h
+++ b/include/llvm/CodeGen/SelectionDAGNodes.h
@@ -1756,12 +1756,13 @@ public:
   /// convenient to write "2.0" and the like.  Without this function we'd 
   /// have to duplicate its logic everywhere it's called.
   bool isExactlyValue(double V) const {
+    bool ignored;
     // convert is not supported on this type
     if (&Value->getValueAPF().getSemantics() == &APFloat::PPCDoubleDouble)
       return false;
     APFloat Tmp(V);
     Tmp.convert(Value->getValueAPF().getSemantics(),
-                APFloat::rmNearestTiesToEven);
+                APFloat::rmNearestTiesToEven, &ignored);
     return isExactlyValue(Tmp);
   }
   bool isExactlyValue(const APFloat& V) const;