r304012 - Enable __float128 for mingw for GCC compatibility and define __SIZEOF_FLOAT128__ on x86

[Reid Kleckner via cfe-commits]

Author: rnk
Date: Fri May 26 12:38:15 2017
New Revision: 304012

URL: http://llvm.org/viewvc/llvm-project?rev=304012&view=rev
Log:
Enable __float128 for mingw for GCC compatibility and define __SIZEOF_FLOAT128__ on x86

GCC defines __FLOAT128__ on Power and __SIZEOF_FLOAT128__ on x86. We're
just following the inconsistency for now so users have some way to test.

Effectively merges this patch as requested by Martell Malone:
https://github.com/Alexpux/MINGW-packages/blob/master/mingw-w64-clang/0107-enable-__float128-for-X86-MinGW.patch

Modified:
    cfe/trunk/lib/Basic/Targets.cpp
    cfe/trunk/lib/Frontend/InitPreprocessor.cpp
    cfe/trunk/test/Sema/128bitfloat.cpp

Modified: cfe/trunk/lib/Basic/Targets.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Basic/Targets.cpp?rev=304012&r1=304011&r2=304012&view=diff
==============================================================================
--- cfe/trunk/lib/Basic/Targets.cpp (original)
+++ cfe/trunk/lib/Basic/Targets.cpp Fri May 26 12:38:15 2017
@@ -4644,7 +4644,9 @@ static void addMinGWDefines(const LangOp
 class MinGWX86_32TargetInfo : public WindowsX86_32TargetInfo {
 public:
   MinGWX86_32TargetInfo(const llvm::Triple &Triple, const TargetOptions &Opts)
-      : WindowsX86_32TargetInfo(Triple, Opts) {}
+      : WindowsX86_32TargetInfo(Triple, Opts) {
+    HasFloat128 = true;
+  }
   void getTargetDefines(const LangOptions &Opts,
                         MacroBuilder &Builder) const override {
     WindowsX86_32TargetInfo::getTargetDefines(Opts, Builder);
@@ -4936,6 +4938,7 @@ public:
     // with x86 FP ops. Weird.
     LongDoubleWidth = LongDoubleAlign = 128;
     LongDoubleFormat = &llvm::APFloat::x87DoubleExtended();
+    HasFloat128 = true;
   }
 
   void getTargetDefines(const LangOptions &Opts,

Modified: cfe/trunk/lib/Frontend/InitPreprocessor.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Frontend/InitPreprocessor.cpp?rev=304012&r1=304011&r2=304012&view=diff
==============================================================================
--- cfe/trunk/lib/Frontend/InitPreprocessor.cpp (original)
+++ cfe/trunk/lib/Frontend/InitPreprocessor.cpp Fri May 26 12:38:15 2017
@@ -750,6 +750,8 @@ static void InitializePredefinedMacros(c
                    TI.getTypeWidth(TI.getWIntType()), TI, Builder);
   if (TI.hasInt128Type())
     DefineTypeSizeof("__SIZEOF_INT128__", 128, TI, Builder);
+  if (TI.hasFloat128Type())
+    DefineTypeSizeof("__SIZEOF_FLOAT128__", 128, TI, Builder);
 
   DefineType("__INTMAX_TYPE__", TI.getIntMaxType(), Builder);
   DefineFmt("__INTMAX", TI.getIntMaxType(), TI, Builder);

Modified: cfe/trunk/test/Sema/128bitfloat.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/Sema/128bitfloat.cpp?rev=304012&r1=304011&r2=304012&view=diff
==============================================================================
--- cfe/trunk/test/Sema/128bitfloat.cpp (original)
+++ cfe/trunk/test/Sema/128bitfloat.cpp Fri May 26 12:38:15 2017
@@ -1,7 +1,11 @@
-// RUN: %clang_cc1 -fsyntax-only -verify -std=gnu++11 %s
-// RUN: %clang_cc1 -fsyntax-only -verify -std=c++11 %s
+// RUN: %clang_cc1 -verify -std=gnu++11 %s
+// RUN: %clang_cc1 -verify -std=c++11 %s
+// RUN: %clang_cc1 -triple powerpc64-linux -verify -std=c++11 %s
+// RUN: %clang_cc1 -triple i686-windows-gnu -verify -std=c++11 %s
+// RUN: %clang_cc1 -triple x86_64-windows-gnu -verify -std=c++11 %s
+// RUN: %clang_cc1 -triple x86_64-windows-msvc -verify -std=c++11 %s
 
-#ifdef __FLOAT128__
+#if defined(__FLOAT128__) || defined(__SIZEOF_FLOAT128__)
 __float128 f;
 template<typename> struct __is_floating_point_helper {};
 template<> struct __is_floating_point_helper<__float128> {};