Author: arsenm Date: Sat Feb 27 03:06:18 2016 New Revision: 262122 URL: http://llvm.org/viewvc/llvm-project?rev=262122&view=rev Log: Add __builtin_canonicalize
Modified: cfe/trunk/docs/LanguageExtensions.rst cfe/trunk/include/clang/Basic/Builtins.def cfe/trunk/lib/CodeGen/CGBuiltin.cpp cfe/trunk/test/CodeGen/builtins.c Modified: cfe/trunk/docs/LanguageExtensions.rst URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/docs/LanguageExtensions.rst?rev=262122&r1=262121&r2=262122&view=diff ============================================================================== --- cfe/trunk/docs/LanguageExtensions.rst (original) +++ cfe/trunk/docs/LanguageExtensions.rst Sat Feb 27 03:06:18 2016 @@ -1728,6 +1728,24 @@ convert their operands before performing Query for this feature with ``__has_builtin(__builtin_add_overflow)``, etc. +Floating point builtins +--------------------------------------- + +``__builtin_canonicalize`` +-------------------------- + +.. code-block:: c + + double __builtin_canonicalize(double); + float __builtin_canonicalizef(float); + long double__builtin_canonicalizel(long double); + +Returns the platform specific canonical encoding of a floating point +number. This canonicalization is useful for implementing certain +numeric primitives such as frexp. See `LLVM canonicalize intrinsic +<http://llvm.org/docs/LangRef.html#llvm-canonicalize-intrinsic>`_ for +more information on the semantics. + .. _langext-__c11_atomic: __c11_atomic builtins Modified: cfe/trunk/include/clang/Basic/Builtins.def URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/include/clang/Basic/Builtins.def?rev=262122&r1=262121&r2=262122&view=diff ============================================================================== --- cfe/trunk/include/clang/Basic/Builtins.def (original) +++ cfe/trunk/include/clang/Basic/Builtins.def Sat Feb 27 03:06:18 2016 @@ -377,6 +377,11 @@ BUILTIN(__builtin_signbit, "i.", "Fnc") BUILTIN(__builtin_signbitf, "if", "Fnc") BUILTIN(__builtin_signbitl, "iLd", "Fnc") +// Special FP builtins. +BUILTIN(__builtin_canonicalize, "dd", "nc") +BUILTIN(__builtin_canonicalizef, "ff", "nc") +BUILTIN(__builtin_canonicalizel, "LdLd", "nc") + // Builtins for arithmetic. BUILTIN(__builtin_clzs , "iUs" , "nc") BUILTIN(__builtin_clz , "iUi" , "nc") Modified: cfe/trunk/lib/CodeGen/CGBuiltin.cpp URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/CodeGen/CGBuiltin.cpp?rev=262122&r1=262121&r2=262122&view=diff ============================================================================== --- cfe/trunk/lib/CodeGen/CGBuiltin.cpp (original) +++ cfe/trunk/lib/CodeGen/CGBuiltin.cpp Sat Feb 27 03:06:18 2016 @@ -2138,6 +2138,11 @@ RValue CodeGenFunction::EmitBuiltinExpr( case Builtin::BIprintf: if (getLangOpts().CUDA && getLangOpts().CUDAIsDevice) return EmitCUDADevicePrintfCallExpr(E, ReturnValue); + break; + case Builtin::BI__builtin_canonicalize: + case Builtin::BI__builtin_canonicalizef: + case Builtin::BI__builtin_canonicalizel: + return RValue::get(emitUnaryBuiltin(*this, E, Intrinsic::canonicalize)); } // If this is an alias for a lib function (e.g. __builtin_sin), emit Modified: cfe/trunk/test/CodeGen/builtins.c URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/CodeGen/builtins.c?rev=262122&r1=262121&r2=262122&view=diff ============================================================================== --- cfe/trunk/test/CodeGen/builtins.c (original) +++ cfe/trunk/test/CodeGen/builtins.c Sat Feb 27 03:06:18 2016 @@ -250,6 +250,13 @@ void test_float_builtin_ops(float F, dou // CHECK: call float @llvm.fabs.f32(float // CHECK: call double @llvm.fabs.f64(double // CHECK: call x86_fp80 @llvm.fabs.f80(x86_fp80 + + resf = __builtin_canonicalizef(F); + resd = __builtin_canonicalize(D); + resld = __builtin_canonicalizel(LD); + // CHECK: call float @llvm.canonicalize.f32(float + // CHECK: call double @llvm.canonicalize.f64(double + // CHECK: call x86_fp80 @llvm.canonicalize.f80(x86_fp80 } // __builtin_longjmp isn't supported on all platforms, so only test it on X86. _______________________________________________ cfe-commits mailing list cfe-commits@lists.llvm.org http://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits