Make a few related changes:

1) add a new ASTContext::getFloatTypeSemantics method.
2) Use it from SemaExpr.cpp, CodeGenTypes.cpp and other places.
3) Change the TargetInfo.h get*Format methods to return their 
   fltSemantics byref instead of by pointer.
4) Change CodeGenFunction::EmitBuiltinExpr to allow builtins which
   sometimes expand specially and othertimes fall back to libm.
5) Add support for __builtin_nan("") to codegen, cases that don't pass
   in an empty string are currently lowered to libm calls.
6) Fix codegen of __builtin_infl.




git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@52914 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 8 insertions, 10 deletions

diff --git a/lib/CodeGen/CodeGenTypes.cpp b/lib/CodeGen/CodeGenTypes.cpp
index 9074e8179c..41ec2dd0f7 100644
--- a/lib/CodeGen/CodeGenTypes.cpp
+++ b/lib/CodeGen/CodeGenTypes.cpp
@@ -168,18 +168,18 @@ const llvm::Type *CodeGenTypes::ConvertReturnType(QualType T) {
     return ConvertType(T);
 }
 
-static const llvm::Type* getTypeForFormat(const llvm::fltSemantics * format) {
-  if (format == &llvm::APFloat::IEEEsingle)
+static const llvm::Type* getTypeForFormat(const llvm::fltSemantics &format) {
+  if (&format == &llvm::APFloat::IEEEsingle)
     return llvm::Type::FloatTy;
-  if (format == &llvm::APFloat::IEEEdouble)
+  if (&format == &llvm::APFloat::IEEEdouble)
     return llvm::Type::DoubleTy;
-  if (format == &llvm::APFloat::IEEEquad)
+  if (&format == &llvm::APFloat::IEEEquad)
     return llvm::Type::FP128Ty;
-  if (format == &llvm::APFloat::PPCDoubleDouble)
+  if (&format == &llvm::APFloat::PPCDoubleDouble)
     return llvm::Type::PPC_FP128Ty;
-  if (format == &llvm::APFloat::x87DoubleExtended)
+  if (&format == &llvm::APFloat::x87DoubleExtended)
     return llvm::Type::X86_FP80Ty;
-  assert(9 && "Unknown float format!");
+  assert(0 && "Unknown float format!");
   return 0;
 }
 
@@ -218,11 +218,9 @@ const llvm::Type *CodeGenTypes::ConvertNewType(QualType T) {
         static_cast<unsigned>(Context.getTypeSize(T)));
       
     case BuiltinType::Float:
-      return getTypeForFormat(Context.Target.getFloatFormat());
     case BuiltinType::Double:
-      return getTypeForFormat(Context.Target.getDoubleFormat());
     case BuiltinType::LongDouble:
-      return getTypeForFormat(Context.Target.getLongDoubleFormat());
+      return getTypeForFormat(Context.getFloatTypeSemantics(T));
     }
     break;
   }