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//===-- X86TargetInfo.cpp - X86 Target Implementation ---------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "llvm/Module.h"
#include "llvm/Target/TargetRegistry.h"
using namespace llvm;
Target llvm::TheX86_32Target;
static unsigned X86_32_JITMatchQuality() {
#if defined(i386) || defined(__i386__) || defined(__x86__) || defined(_M_IX86)
return 10;
#endif
return 0;
}
static unsigned X86_32_TripleMatchQuality(const std::string &TT) {
// We strongly match "i[3-9]86-*".
if (TT.size() >= 5 && TT[0] == 'i' && TT[2] == '8' && TT[3] == '6' &&
TT[4] == '-' && TT[1] - '3' < 6)
return 20;
return 0;
}
static unsigned X86_32_ModuleMatchQuality(const Module &M) {
// Check for a triple match.
if (unsigned Q = X86_32_TripleMatchQuality(M.getTargetTriple()))
return Q;
// If the target triple is something non-X86, we don't match.
if (!M.getTargetTriple().empty()) return 0;
if (M.getEndianness() == Module::LittleEndian &&
M.getPointerSize() == Module::Pointer32)
return 10; // Weak match
else if (M.getEndianness() != Module::AnyEndianness ||
M.getPointerSize() != Module::AnyPointerSize)
return 0; // Match for some other target
return X86_32_JITMatchQuality()/2;
}
Target llvm::TheX86_64Target;
static unsigned X86_64_JITMatchQuality() {
#if defined(__x86_64__) || defined(_M_AMD64)
return 10;
#endif
return 0;
}
static unsigned X86_64_TripleMatchQuality(const std::string &TT) {
// We strongly match "x86_64-*".
if (TT.size() >= 7 && TT[0] == 'x' && TT[1] == '8' && TT[2] == '6' &&
TT[3] == '_' && TT[4] == '6' && TT[5] == '4' && TT[6] == '-')
return 20;
return 0;
}
static unsigned X86_64_ModuleMatchQuality(const Module &M) {
// Check for a triple match.
if (unsigned Q = X86_64_TripleMatchQuality(M.getTargetTriple()))
return Q;
// If the target triple is something non-X86-64, we don't match.
if (!M.getTargetTriple().empty()) return 0;
if (M.getEndianness() == Module::LittleEndian &&
M.getPointerSize() == Module::Pointer64)
return 10; // Weak match
else if (M.getEndianness() != Module::AnyEndianness ||
M.getPointerSize() != Module::AnyPointerSize)
return 0; // Match for some other target
return X86_64_JITMatchQuality()/2;
}
extern "C" void LLVMInitializeX86TargetInfo() {
TargetRegistry::RegisterTarget(TheX86_32Target, "x86",
"32-bit X86: Pentium-Pro and above",
&X86_32_TripleMatchQuality,
&X86_32_ModuleMatchQuality,
&X86_32_JITMatchQuality);
TargetRegistry::RegisterTarget(TheX86_64Target, "x86-64",
"64-bit X86: EM64T and AMD64",
&X86_64_TripleMatchQuality,
&X86_64_ModuleMatchQuality,
&X86_64_JITMatchQuality);
}
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