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//===-- X86Subtarget.cpp - X86 Subtarget 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, const std::string &FS)
: TargetSubtarget(), stackAlignment(8),
indirectExternAndWeakGlobals(false), asmDarwinLinkerStubs(false),
asmLeadingUnderscore(false), asmAlignmentIsInBytes(false),
asmPrintDotLocalConstants(false), asmPrintDotLCommConstants(false),
asmPrintConstantAlignment(false) {
// Declare a boolean for each major 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)
forWindows = true;
#endif
}
if (forCygwin) {
asmLeadingUnderscore = true;
} else if (forDarwin) {
stackAlignment = 16;
indirectExternAndWeakGlobals = true;
asmDarwinLinkerStubs = true;
asmLeadingUnderscore = true;
asmPrintDotLCommConstants = true;
} else if (forWindows) {
}
}
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