| Daniel Dunbar | 0eb6699 | 2009-07-15 06:35:19 +0000 | [diff] [blame^] | 1 | //===-- X86TargetInfo.cpp - X86 Target Implementation ---------------------===// |
| 2 | // |
| 3 | // The LLVM Compiler Infrastructure |
| 4 | // |
| 5 | // This file is distributed under the University of Illinois Open Source |
| 6 | // License. See LICENSE.TXT for details. |
| 7 | // |
| 8 | //===----------------------------------------------------------------------===// |
| 9 | |
| 10 | #include "llvm/Module.h" |
| 11 | #include "llvm/Target/TargetRegistry.h" |
| 12 | using namespace llvm; |
| 13 | |
| 14 | Target TheX86_32Target; |
| 15 | |
| 16 | static unsigned X86_32_JITMatchQuality() { |
| 17 | #if defined(i386) || defined(__i386__) || defined(__x86__) || defined(_M_IX86) |
| 18 | return 10; |
| 19 | #endif |
| 20 | return 0; |
| 21 | } |
| 22 | |
| 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) |
| 27 | return 20; |
| 28 | |
| 29 | return 0; |
| 30 | } |
| 31 | |
| 32 | static unsigned X86_32_ModuleMatchQuality(const Module &M) { |
| 33 | // Check for a triple match. |
| 34 | if (unsigned Q = X86_32_TripleMatchQuality(M.getTargetTriple())) |
| 35 | return Q; |
| 36 | |
| 37 | // If the target triple is something non-X86, we don't match. |
| 38 | if (!M.getTargetTriple().empty()) return 0; |
| 39 | |
| 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 |
| 46 | |
| 47 | return X86_32_JITMatchQuality()/2; |
| 48 | } |
| 49 | |
| 50 | Target TheX86_64Target; |
| 51 | |
| 52 | static unsigned X86_64_JITMatchQuality() { |
| 53 | #if defined(__x86_64__) || defined(_M_AMD64) |
| 54 | return 10; |
| 55 | #endif |
| 56 | return 0; |
| 57 | } |
| 58 | |
| 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] == '-') |
| 63 | return 20; |
| 64 | |
| 65 | return 0; |
| 66 | } |
| 67 | |
| 68 | static unsigned X86_64_ModuleMatchQuality(const Module &M) { |
| 69 | // Check for a triple match. |
| 70 | if (unsigned Q = X86_64_TripleMatchQuality(M.getTargetTriple())) |
| 71 | return Q; |
| 72 | |
| 73 | // If the target triple is something non-X86-64, we don't match. |
| 74 | if (!M.getTargetTriple().empty()) return 0; |
| 75 | |
| 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 |
| 82 | |
| 83 | return X86_64_JITMatchQuality()/2; |
| 84 | } |
| 85 | |
| 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); |
| 92 | |
| 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); |
| 98 | } |