1 files changed, 59 insertions, 0 deletions
diff --git a/lib/Target/X86/X86Subtarget.cpp b/lib/Target/X86/X86Subtarget.cpp
new file mode 100644
index 0000000000..e50d2d6d87
--- /dev/null
+++ b/lib/Target/X86/X86Subtarget.cpp
@@ -0,0 +1,59 @@
+//===- X86Subtarget.cpp - X86 Instruction Information -----------*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file was developed by Nate Begeman and is distributed under the
+// University of Illinois Open Source License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file implements the X86 specific subclass of TargetSubtarget.
+//
+//===----------------------------------------------------------------------===//
+
+#include "X86Subtarget.h"
+#include "llvm/Module.h"
+using namespace llvm;
+
+X86Subtarget::X86Subtarget(const Module &M) 
+  : TargetSubtarget(M), stackAlignment(8), 
+    indirectExternAndWeakGlobals(false), asmDarwinLinkerStubs(false),
+    asmLeadingUnderscore(false), asmAlignmentIsInBytes(false),
+    asmPrintDotLocalConstants(false), asmPrintDotLCommConstants(false),
+    asmPrintConstantAlignment(false) {
+  // Declare a boolean for each platform
+  bool forCygwin = false;
+  bool forDarwin = false;
+  bool forWindows = false;
+  
+  // Set the boolean corresponding to the current target triple, or the default
+  // if one cannot be determined, to true.
+  const std::string& TT = M.getTargetTriple();
+  if (TT.length() > 5) {
+    forCygwin = TT.find("cygwin") != std::string::npos ||
+                TT.find("mingw")  != std::string::npos;
+    forDarwin = TT.find("darwin") != std::string::npos;
+    forWindows = TT.find("win32") != std::string::npos;
+  } else if (TT.empty()) {
+#if defined(__CYGWIN__) || defined(__MINGW32__)
+    forCygwin = true;
+#elif defined(__APPLE__)
+    forDarwin = true;
+#elif defined(_WIN32)
+    forWindws = true;
+#endif
+  }
+
+  if (forCygwin) {
+    asmLeadingUnderscore = true;
+  }
+  if (forDarwin) {
+    stackAlignment = 16;
+    indirectExternAndWeakGlobals = true;
+    asmDarwinLinkerStubs = true;
+    asmLeadingUnderscore = true;
+    asmPrintDotLCommConstants = true;
+  }
+  if (forWindows) {
+  }
+}