diff options
Diffstat (limited to 'clang/lib')
| -rw-r--r-- | clang/lib/Basic/Targets.cpp | 4 | ||||
| -rw-r--r-- | clang/lib/Frontend/InitPreprocessor.cpp | 2 |
2 files changed, 5 insertions, 1 deletions
diff --git a/clang/lib/Basic/Targets.cpp b/clang/lib/Basic/Targets.cpp index 34258c10546..bb1051d7403 100644 --- a/clang/lib/Basic/Targets.cpp +++ b/clang/lib/Basic/Targets.cpp @@ -1339,6 +1339,10 @@ public: BigEndian = false; LongDoubleFormat = &llvm::APFloat::x87DoubleExtended; } + virtual unsigned getFloatEvalMethod() const { + // X87 evaluates with 80 bits "long double" precision. + return SSELevel == NoSSE ? 2 : 0; + } virtual void getTargetBuiltins(const Builtin::Info *&Records, unsigned &NumRecords) const { Records = BuiltinInfo; diff --git a/clang/lib/Frontend/InitPreprocessor.cpp b/clang/lib/Frontend/InitPreprocessor.cpp index c67eba40b59..f601f3d73ab 100644 --- a/clang/lib/Frontend/InitPreprocessor.cpp +++ b/clang/lib/Frontend/InitPreprocessor.cpp @@ -513,7 +513,7 @@ static void InitializePredefinedMacros(const TargetInfo &TI, } // Macros to control C99 numerics and <float.h> - Builder.defineMacro("__FLT_EVAL_METHOD__", "0"); + Builder.defineMacro("__FLT_EVAL_METHOD__", Twine(TI.getFloatEvalMethod())); Builder.defineMacro("__FLT_RADIX__", "2"); int Dig = PickFP(&TI.getLongDoubleFormat(), -1/*FIXME*/, 17, 21, 33, 36); Builder.defineMacro("__DECIMAL_DIG__", Twine(Dig)); |
