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| author | Anton Korobeynikov <asl@math.spbu.ru> | 2011-10-14 23:23:15 +0000 |
|---|---|---|
| committer | Anton Korobeynikov <asl@math.spbu.ru> | 2011-10-14 23:23:15 +0000 |
| commit | aa4a99b4a62615db243f7a5c433169f2fc704420 (patch) | |
| tree | 7339705e0bd5e244c9fd7d8386dc8a279cb3ec35 /lib/CodeGen/CodeGenTypes.cpp | |
| parent | 43ac6d0922a3408e23d410ccd224c845399bf181 (diff) | |
Provide half floating point support as a storage only type.
Lack of half FP was a regression compared to llvm-gcc.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@142016 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/CodeGen/CodeGenTypes.cpp')
| -rw-r--r-- | lib/CodeGen/CodeGenTypes.cpp | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/lib/CodeGen/CodeGenTypes.cpp b/lib/CodeGen/CodeGenTypes.cpp index 03a15ae67e..e0d9218965 100644 --- a/lib/CodeGen/CodeGenTypes.cpp +++ b/lib/CodeGen/CodeGenTypes.cpp @@ -263,6 +263,8 @@ void CodeGenTypes::UpdateCompletedType(const TagDecl *TD) { static llvm::Type *getTypeForFormat(llvm::LLVMContext &VMContext, const llvm::fltSemantics &format) { + if (&format == &llvm::APFloat::IEEEhalf) + return llvm::Type::getInt16Ty(VMContext); if (&format == &llvm::APFloat::IEEEsingle) return llvm::Type::getFloatTy(VMContext); if (&format == &llvm::APFloat::IEEEdouble) @@ -341,6 +343,14 @@ llvm::Type *CodeGenTypes::ConvertType(QualType T) { static_cast<unsigned>(Context.getTypeSize(T))); break; + case BuiltinType::Half: + // Half is special: it might be lowered to i16 (and will be storage-only + // type),. or can be represented as a set of native operations. + + // FIXME: Ask target which kind of half FP it prefers (storage only vs + // native). + ResultType = llvm::Type::getInt16Ty(getLLVMContext()); + break; case BuiltinType::Float: case BuiltinType::Double: case BuiltinType::LongDouble: |