1 files changed, 47 insertions, 0 deletions
diff --git a/clang/lib/Basic/Targets/OSTargets.h b/clang/lib/Basic/Targets/OSTargets.h
index c8d4aaae482..e8715dcf374 100644
--- a/clang/lib/Basic/Targets/OSTargets.h
+++ b/clang/lib/Basic/Targets/OSTargets.h
@@ -613,6 +613,53 @@ public:
   }
 };
 
+// AIX Target
+template <typename Target>
+class AIXTargetInfo : public OSTargetInfo<Target> {
+protected:
+  void getOSDefines(const LangOptions &Opts, const llvm::Triple &Triple,
+                    MacroBuilder &Builder) const override {
+    DefineStd(Builder, "unix", Opts);
+    Builder.defineMacro("_IBMR2");
+    Builder.defineMacro("_POWER");
+
+    // FIXME: Define AIX OS-Version Macros.
+    Builder.defineMacro("_AIX");
+
+    // FIXME: Do not define _LONG_LONG when -fno-long-long is specified.
+    Builder.defineMacro("_LONG_LONG");
+
+    if (Opts.POSIXThreads) {
+      Builder.defineMacro("_THREAD_SAFE");
+    }
+
+    if (this->PointerWidth == 64) {
+      Builder.defineMacro("__64BIT__");
+    }
+
+    // Define _WCHAR_T when it is a fundamental type
+    // (i.e., for C++ without -fno-wchar).
+    if (Opts.CPlusPlus && Opts.WChar) {
+      Builder.defineMacro("_WCHAR_T");
+    }
+  }
+
+public:
+  AIXTargetInfo(const llvm::Triple &Triple, const TargetOptions &Opts)
+      : OSTargetInfo<Target>(Triple, Opts) {
+    if (this->PointerWidth == 64) {
+      this->WCharType = this->UnsignedInt;
+    } else {
+      this->WCharType = this->UnsignedShort;
+    }
+    this->UseZeroLengthBitfieldAlignment = true;
+  }
+
+  // AIX sets FLT_EVAL_METHOD to be 1.
+  unsigned getFloatEvalMethod() const override { return 1; }
+  bool hasInt128Type() const override { return false; }
+};
+
 // Windows target
 template <typename Target>
 class LLVM_LIBRARY_VISIBILITY WindowsTargetInfo : public OSTargetInfo<Target> {