diff options
Diffstat (limited to 'clang/lib/CodeGen/CGBuiltin.cpp')
| -rw-r--r-- | clang/lib/CodeGen/CGBuiltin.cpp | 23 |
1 files changed, 5 insertions, 18 deletions
diff --git a/clang/lib/CodeGen/CGBuiltin.cpp b/clang/lib/CodeGen/CGBuiltin.cpp index 10b47f1a489..99a3463a221 100644 --- a/clang/lib/CodeGen/CGBuiltin.cpp +++ b/clang/lib/CodeGen/CGBuiltin.cpp @@ -46,11 +46,14 @@ RValue CodeGenFunction::EmitBuiltinExpr(unsigned BuiltinID, const CallExpr *E) { case Builtin::BI__builtin_inf: case Builtin::BI__builtin_inff: case Builtin::BI__builtin_infl: + case Builtin::BI__builtin_nan: + case Builtin::BI__builtin_nanf: + case Builtin::BI__builtin_nanl: case Builtin::BI__builtin_classify_type: case Builtin::BI__builtin_constant_p: { APValue Result; - bool IsCst = E->tryEvaluate(Result, CGM.getContext()); - assert(IsCst && "These must all be constants!"); + if (!E->tryEvaluate(Result, CGM.getContext())) + break; // Not a constant, expand below. if (Result.isInt()) return RValue::get(llvm::ConstantInt::get(Result.getInt())); @@ -231,22 +234,6 @@ RValue CodeGenFunction::EmitBuiltinExpr(unsigned BuiltinID, const CallExpr *E) { return RValue::get(Builder.CreateCall(F)); } - case Builtin::BI__builtin_nan: - case Builtin::BI__builtin_nanf: - case Builtin::BI__builtin_nanl: { - // If this is __builtin_nan("") turn this into a simple nan, otherwise just - // call libm nan. - if (const StringLiteral *S = - dyn_cast<StringLiteral>(E->getArg(0)->IgnoreParenCasts())) { - if (!S->isWide() && S->getByteLength() == 0) { // empty string. - const llvm::fltSemantics &Sem = - CGM.getContext().getFloatTypeSemantics(E->getType()); - return RValue::get(ConstantFP::get(APFloat::getNaN(Sem))); - } - } - // Otherwise, call libm 'nan'. - break; - } case Builtin::BI__builtin_powi: case Builtin::BI__builtin_powif: case Builtin::BI__builtin_powil: { |
