Simplify code. No functionality change.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@120907 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Target/X86/X86ISelLowering.cpp b/lib/Target/X86/X86ISelLowering.cpp
index f3c1b8537304fe237e1572c60e0b95a6ee47395b..0bbf990ab7751f4374b452ad0625769674267969 100644 (file)
--- a/lib/Target/X86/X86ISelLowering.cpp
+++ b/lib/Target/X86/X86ISelLowering.cpp
@@ -521,13 +521,12 @@ X86TargetLowering::X86TargetLowering(X86TargetMachine &TM)
     setOperationAction(ISD::UNDEF,     MVT::f80, Expand);
     setOperationAction(ISD::FCOPYSIGN, MVT::f80, Expand);
     {
-      bool ignored;
-      APFloat TmpFlt(+0.0);
-      TmpFlt.convert(APFloat::x87DoubleExtended, APFloat::rmNearestTiesToEven,
-                     &ignored);
+      APFloat TmpFlt = APFloat::getZero(APFloat::x87DoubleExtended);
       addLegalFPImmediate(TmpFlt);  // FLD0
       TmpFlt.changeSign();
       addLegalFPImmediate(TmpFlt);  // FLD0/FCHS
+
+      bool ignored;
       APFloat TmpFlt2(+1.0);
       TmpFlt2.convert(APFloat::x87DoubleExtended, APFloat::rmNearestTiesToEven,
                       &ignored);

diff --git a/lib/VMCore/Constants.cpp b/lib/VMCore/Constants.cpp
index 5bbf087e486de5f30661b7b85b713022561b616b..ab9592f728a793a3df9dcd57654c4d802aa323d5 100644 (file)
--- a/lib/VMCore/Constants.cpp
+++ b/lib/VMCore/Constants.cpp
@@ -40,22 +40,25 @@ using namespace llvm;
 //===----------------------------------------------------------------------===//
 
 // Constructor to create a '0' constant of arbitrary type...
-static const uint64_t zero[2] = {0, 0};
 Constant *Constant::getNullValue(const Type *Ty) {
   switch (Ty->getTypeID()) {
   case Type::IntegerTyID:
     return ConstantInt::get(Ty, 0);
   case Type::FloatTyID:
-    return ConstantFP::get(Ty->getContext(), APFloat(APInt(32, 0)));
+    return ConstantFP::get(Ty->getContext(),
+                           APFloat::getZero(APFloat::IEEEsingle));
   case Type::DoubleTyID:
-    return ConstantFP::get(Ty->getContext(), APFloat(APInt(64, 0)));
+    return ConstantFP::get(Ty->getContext(),
+                           APFloat::getZero(APFloat::IEEEdouble));
   case Type::X86_FP80TyID:
-    return ConstantFP::get(Ty->getContext(), APFloat(APInt(80, 2, zero)));
+    return ConstantFP::get(Ty->getContext(),
+                           APFloat::getZero(APFloat::x87DoubleExtended));
   case Type::FP128TyID:
     return ConstantFP::get(Ty->getContext(),
-                           APFloat(APInt(128, 2, zero), true));
+                           APFloat::getZero(APFloat::IEEEquad));
   case Type::PPC_FP128TyID:
-    return ConstantFP::get(Ty->getContext(), APFloat(APInt(128, 2, zero)));
+    return ConstantFP::get(Ty->getContext(),
+                           APFloat::getZero(APFloat::PPCDoubleDouble));
   case Type::PointerTyID:
     return ConstantPointerNull::get(cast<PointerType>(Ty));
   case Type::StructTyID: