Next round of APFloat changes.

Use APFloat in UpgradeParser and AsmParser.
Change all references to ConstantFP to use the
APFloat interface rather than double.  Remove
the ConstantFP double interfaces.
Use APFloat functions for constant folding arithmetic
and comparisons.
(There are still way too many places APFloat is
just a wrapper around host float/double, but we're
getting there.)

llvm-svn: 41747

1 files changed, 9 insertions, 6 deletions

diff --git a/llvm/lib/Bitcode/Reader/BitcodeReader.cpp b/llvm/lib/Bitcode/Reader/BitcodeReader.cpp
index 6ad1fd595b7..fcf2e510f9b 100644
--- a/llvm/lib/Bitcode/Reader/BitcodeReader.cpp
+++ b/llvm/lib/Bitcode/Reader/BitcodeReader.cpp
@@ -626,13 +626,16 @@ bool BitcodeReader::ParseConstants() {
       if (Record.empty())
         return Error("Invalid FLOAT record");
       if (CurTy == Type::FloatTy)
-        V = ConstantFP::get(CurTy, BitsToFloat(Record[0]));
+        V = ConstantFP::get(CurTy, APFloat((float)BitsToDouble(Record[0])));
       else if (CurTy == Type::DoubleTy)
-        V = ConstantFP::get(CurTy, BitsToDouble(Record[0]));
-      // FIXME: Make long double constants work.
-      else if (CurTy == Type::X86_FP80Ty ||
-               CurTy == Type::FP128Ty || CurTy == Type::PPC_FP128Ty)
-        assert(0 && "Long double constants not handled yet.");
+        V = ConstantFP::get(CurTy, APFloat(BitsToDouble(Record[0])));
+      // FIXME: Make long double constants work.  BitsToDouble does not make it.
+      else if (CurTy == Type::X86_FP80Ty)
+        V = ConstantFP::get(CurTy, APFloat(BitsToDouble(Record[0])));
+      else if (CurTy == Type::FP128Ty)
+        V = ConstantFP::get(CurTy, APFloat(BitsToDouble(Record[0])));
+      else if (CurTy == Type::PPC_FP128Ty)
+        assert(0 && "PowerPC long double constants not handled yet.");
       else
         V = UndefValue::get(CurTy);
       break;