1 //===-- X86TargetInfo.cpp - X86 Target Implementation ---------------------===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 #include "llvm/Module.h"
11 #include "llvm/Target/TargetRegistry.h"
14 Target TheX86_32Target;
16 static unsigned X86_32_JITMatchQuality() {
17 #if defined(i386) || defined(__i386__) || defined(__x86__) || defined(_M_IX86)
23 static unsigned X86_32_TripleMatchQuality(const std::string &TT) {
24 // We strongly match "i[3-9]86-*".
25 if (TT.size() >= 5 && TT[0] == 'i' && TT[2] == '8' && TT[3] == '6' &&
26 TT[4] == '-' && TT[1] - '3' < 6)
32 static unsigned X86_32_ModuleMatchQuality(const Module &M) {
33 // Check for a triple match.
34 if (unsigned Q = X86_32_TripleMatchQuality(M.getTargetTriple()))
37 // If the target triple is something non-X86, we don't match.
38 if (!M.getTargetTriple().empty()) return 0;
40 if (M.getEndianness() == Module::LittleEndian &&
41 M.getPointerSize() == Module::Pointer32)
42 return 10; // Weak match
43 else if (M.getEndianness() != Module::AnyEndianness ||
44 M.getPointerSize() != Module::AnyPointerSize)
45 return 0; // Match for some other target
47 return X86_32_JITMatchQuality()/2;
50 Target TheX86_64Target;
52 static unsigned X86_64_JITMatchQuality() {
53 #if defined(__x86_64__) || defined(_M_AMD64)
59 static unsigned X86_64_TripleMatchQuality(const std::string &TT) {
60 // We strongly match "x86_64-*".
61 if (TT.size() >= 7 && TT[0] == 'x' && TT[1] == '8' && TT[2] == '6' &&
62 TT[3] == '_' && TT[4] == '6' && TT[5] == '4' && TT[6] == '-')
68 static unsigned X86_64_ModuleMatchQuality(const Module &M) {
69 // Check for a triple match.
70 if (unsigned Q = X86_64_TripleMatchQuality(M.getTargetTriple()))
73 // If the target triple is something non-X86-64, we don't match.
74 if (!M.getTargetTriple().empty()) return 0;
76 if (M.getEndianness() == Module::LittleEndian &&
77 M.getPointerSize() == Module::Pointer64)
78 return 10; // Weak match
79 else if (M.getEndianness() != Module::AnyEndianness ||
80 M.getPointerSize() != Module::AnyPointerSize)
81 return 0; // Match for some other target
83 return X86_64_JITMatchQuality()/2;
86 extern "C" void LLVMInitializeX86TargetInfo() {
87 TargetRegistry::RegisterTarget(TheX86_32Target, "x86",
88 "32-bit X86: Pentium-Pro and above",
89 &X86_32_TripleMatchQuality,
90 &X86_32_ModuleMatchQuality,
91 &X86_32_JITMatchQuality);
93 TargetRegistry::RegisterTarget(TheX86_64Target, "x86-64",
94 "64-bit X86: EM64T and AMD64",
95 &X86_64_TripleMatchQuality,
96 &X86_64_ModuleMatchQuality,
97 &X86_64_JITMatchQuality);