2002-10-29 22:37:54 +00:00
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//===-- X86TargetMachine.cpp - Define TargetMachine for the X86 -----------===//
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2005-04-21 23:38:14 +00:00
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//
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2003-10-20 19:43:21 +00:00
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// The LLVM Compiler Infrastructure
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//
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2007-12-29 20:36:04 +00:00
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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2005-04-21 23:38:14 +00:00
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//
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2003-10-20 19:43:21 +00:00
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//===----------------------------------------------------------------------===//
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2005-04-21 23:38:14 +00:00
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//
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2002-10-29 22:37:54 +00:00
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// This file defines the X86 specific subclass of TargetMachine.
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//
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//===----------------------------------------------------------------------===//
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2006-09-07 23:39:26 +00:00
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#include "X86TargetAsmInfo.h"
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2002-10-29 22:37:54 +00:00
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#include "X86TargetMachine.h"
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2002-12-24 00:04:01 +00:00
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#include "X86.h"
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2003-08-24 19:49:48 +00:00
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#include "llvm/Module.h"
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2003-04-23 16:24:55 +00:00
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#include "llvm/PassManager.h"
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2002-10-30 00:47:49 +00:00
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#include "llvm/CodeGen/MachineFunction.h"
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2003-01-13 00:51:23 +00:00
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#include "llvm/CodeGen/Passes.h"
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2004-07-11 04:17:10 +00:00
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#include "llvm/Target/TargetOptions.h"
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2004-07-11 02:48:49 +00:00
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#include "llvm/Target/TargetMachineRegistry.h"
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2003-12-20 01:22:19 +00:00
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using namespace llvm;
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2003-11-11 22:41:34 +00:00
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2005-01-03 16:34:19 +00:00
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/// X86TargetMachineModule - Note that this is used on hosts that cannot link
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/// in a library unless there are references into the library. In particular,
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/// it seems that it is not possible to get things to work on Win32 without
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/// this. Though it is unused, do not remove it.
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extern "C" int X86TargetMachineModule;
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int X86TargetMachineModule = 0;
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2008-05-13 00:00:25 +00:00
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// Register the target.
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static RegisterTarget<X86_32TargetMachine>
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X("x86", " 32-bit X86: Pentium-Pro and above");
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static RegisterTarget<X86_64TargetMachine>
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Y("x86-64", " 64-bit X86: EM64T and AMD64");
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2002-12-16 16:15:51 +00:00
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2008-08-17 13:53:59 +00:00
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// No assembler printer by default
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X86TargetMachine::AsmPrinterCtorFn X86TargetMachine::AsmPrinterCtor = 0;
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2006-09-07 23:39:26 +00:00
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const TargetAsmInfo *X86TargetMachine::createTargetAsmInfo() const {
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2008-07-09 13:20:48 +00:00
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if (Subtarget.isFlavorIntel())
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return new X86WinTargetAsmInfo(*this);
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else
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switch (Subtarget.TargetType) {
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case X86Subtarget::isDarwin:
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return new X86DarwinTargetAsmInfo(*this);
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case X86Subtarget::isELF:
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return new X86ELFTargetAsmInfo(*this);
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case X86Subtarget::isMingw:
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case X86Subtarget::isCygwin:
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return new X86COFFTargetAsmInfo(*this);
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case X86Subtarget::isWindows:
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return new X86WinTargetAsmInfo(*this);
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default:
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return new X86TargetAsmInfo(*this);
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}
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2006-09-07 23:39:26 +00:00
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}
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2006-09-08 06:48:29 +00:00
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unsigned X86_32TargetMachine::getJITMatchQuality() {
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2004-10-18 15:54:17 +00:00
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#if defined(i386) || defined(__i386__) || defined(__x86__) || defined(_M_IX86)
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2004-07-11 02:48:49 +00:00
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return 10;
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2006-09-08 06:48:29 +00:00
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#endif
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2004-07-11 02:48:49 +00:00
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return 0;
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2006-09-08 06:48:29 +00:00
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}
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unsigned X86_64TargetMachine::getJITMatchQuality() {
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2008-03-23 13:43:47 +00:00
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#if defined(__x86_64__) || defined(_M_AMD64)
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2006-09-08 06:48:29 +00:00
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return 10;
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2004-07-11 02:48:49 +00:00
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#endif
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2006-09-08 06:48:29 +00:00
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return 0;
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2004-07-11 02:48:49 +00:00
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}
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2006-09-08 06:48:29 +00:00
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unsigned X86_32TargetMachine::getModuleMatchQuality(const Module &M) {
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2004-12-12 17:40:28 +00:00
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// We strongly match "i[3-9]86-*".
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std::string TT = M.getTargetTriple();
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if (TT.size() >= 5 && TT[0] == 'i' && TT[2] == '8' && TT[3] == '6' &&
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TT[4] == '-' && TT[1] - '3' < 6)
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return 20;
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2007-07-09 17:25:29 +00:00
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// If the target triple is something non-X86, we don't match.
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if (!TT.empty()) return 0;
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2004-12-12 17:40:28 +00:00
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2004-07-11 02:48:49 +00:00
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if (M.getEndianness() == Module::LittleEndian &&
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M.getPointerSize() == Module::Pointer32)
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2004-12-12 17:40:28 +00:00
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return 10; // Weak match
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2004-07-11 02:48:49 +00:00
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else if (M.getEndianness() != Module::AnyEndianness ||
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M.getPointerSize() != Module::AnyPointerSize)
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return 0; // Match for some other target
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return getJITMatchQuality()/2;
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}
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2002-10-29 22:37:54 +00:00
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2006-09-08 06:48:29 +00:00
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unsigned X86_64TargetMachine::getModuleMatchQuality(const Module &M) {
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// We strongly match "x86_64-*".
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std::string TT = M.getTargetTriple();
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if (TT.size() >= 7 && TT[0] == 'x' && TT[1] == '8' && TT[2] == '6' &&
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TT[3] == '_' && TT[4] == '6' && TT[5] == '4' && TT[6] == '-')
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return 20;
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2006-12-19 19:40:09 +00:00
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// We strongly match "amd64-*".
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if (TT.size() >= 6 && TT[0] == 'a' && TT[1] == 'm' && TT[2] == 'd' &&
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TT[3] == '6' && TT[4] == '4' && TT[5] == '-')
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return 20;
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2007-07-09 17:25:29 +00:00
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// If the target triple is something non-X86-64, we don't match.
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if (!TT.empty()) return 0;
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2006-09-08 06:48:29 +00:00
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if (M.getEndianness() == Module::LittleEndian &&
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M.getPointerSize() == Module::Pointer64)
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return 10; // Weak match
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else if (M.getEndianness() != Module::AnyEndianness ||
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M.getPointerSize() != Module::AnyPointerSize)
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return 0; // Match for some other target
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return getJITMatchQuality()/2;
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}
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X86_32TargetMachine::X86_32TargetMachine(const Module &M, const std::string &FS)
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: X86TargetMachine(M, FS, false) {
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}
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X86_64TargetMachine::X86_64TargetMachine(const Module &M, const std::string &FS)
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: X86TargetMachine(M, FS, true) {
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}
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2002-10-29 22:37:54 +00:00
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/// X86TargetMachine ctor - Create an ILP32 architecture model
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///
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2007-02-23 03:03:16 +00:00
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X86TargetMachine::X86TargetMachine(const Module &M, const std::string &FS,
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bool is64Bit)
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2006-09-08 06:48:29 +00:00
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: Subtarget(M, FS, is64Bit),
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2007-08-06 21:48:35 +00:00
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DataLayout(Subtarget.getDataLayout()),
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2005-07-12 01:41:54 +00:00
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FrameInfo(TargetFrameInfo::StackGrowsDown,
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2006-09-08 06:48:29 +00:00
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Subtarget.getStackAlignment(), Subtarget.is64Bit() ? -8 : -4),
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2006-05-30 21:45:53 +00:00
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InstrInfo(*this), JITInfo(*this), TLInfo(*this) {
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2007-12-22 09:40:20 +00:00
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DefRelocModel = getRelocationModel();
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2008-03-23 13:41:18 +00:00
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// FIXME: Correctly select PIC model for Win64 stuff
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2008-02-20 11:22:39 +00:00
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if (getRelocationModel() == Reloc::Default) {
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2008-03-23 13:41:18 +00:00
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if (Subtarget.isTargetDarwin() ||
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(Subtarget.isTargetCygMing() && !Subtarget.isTargetWin64()))
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2006-02-22 20:19:42 +00:00
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setRelocationModel(Reloc::DynamicNoPIC);
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else
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2006-12-04 18:07:10 +00:00
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setRelocationModel(Reloc::Static);
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2008-02-20 11:22:39 +00:00
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}
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2006-09-08 06:48:29 +00:00
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if (Subtarget.is64Bit()) {
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// No DynamicNoPIC support under X86-64.
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if (getRelocationModel() == Reloc::DynamicNoPIC)
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setRelocationModel(Reloc::PIC_);
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// Default X86-64 code model is small.
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if (getCodeModel() == CodeModel::Default)
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setCodeModel(CodeModel::Small);
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}
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2007-01-12 19:20:47 +00:00
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2007-01-18 22:27:12 +00:00
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if (Subtarget.isTargetCygMing())
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Subtarget.setPICStyle(PICStyle::WinPIC);
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2008-02-20 11:22:39 +00:00
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else if (Subtarget.isTargetDarwin()) {
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2007-01-18 22:27:12 +00:00
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if (Subtarget.is64Bit())
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Subtarget.setPICStyle(PICStyle::RIPRel);
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2007-01-12 19:20:47 +00:00
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else
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Subtarget.setPICStyle(PICStyle::Stub);
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2008-02-20 11:22:39 +00:00
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} else if (Subtarget.isTargetELF()) {
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2007-01-18 22:27:12 +00:00
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if (Subtarget.is64Bit())
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Subtarget.setPICStyle(PICStyle::RIPRel);
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2007-01-12 19:20:47 +00:00
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else
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2007-01-18 22:27:12 +00:00
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Subtarget.setPICStyle(PICStyle::GOT);
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2008-02-20 11:22:39 +00:00
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}
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2006-02-03 18:59:39 +00:00
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}
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2002-10-29 22:37:54 +00:00
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2006-09-04 04:14:57 +00:00
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//===----------------------------------------------------------------------===//
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// Pass Pipeline Configuration
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//===----------------------------------------------------------------------===//
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2003-08-05 16:34:44 +00:00
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2008-03-11 22:29:46 +00:00
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bool X86TargetMachine::addInstSelector(PassManagerBase &PM, bool Fast) {
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2005-08-18 23:53:15 +00:00
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// Install an instruction selector.
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2006-08-29 18:28:33 +00:00
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PM.add(createX86ISelDag(*this, Fast));
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2006-09-04 04:14:57 +00:00
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return false;
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2003-06-18 21:43:21 +00:00
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}
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2008-04-23 18:23:05 +00:00
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bool X86TargetMachine::addPreRegAlloc(PassManagerBase &PM, bool Fast) {
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2008-04-23 18:23:30 +00:00
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// Calculate and set max stack object alignment early, so we can decide
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// whether we will need stack realignment (and thus FP).
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2008-04-23 18:23:05 +00:00
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PM.add(createX86MaxStackAlignmentCalculatorPass());
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return false; // -print-machineinstr shouldn't print after this.
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}
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2008-03-11 22:29:46 +00:00
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bool X86TargetMachine::addPostRegAlloc(PassManagerBase &PM, bool Fast) {
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2003-01-13 00:51:23 +00:00
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PM.add(createX86FloatingPointStackifierPass());
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2006-09-04 04:14:57 +00:00
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return true; // -print-machineinstr should print after this.
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}
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2003-01-13 00:51:23 +00:00
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2008-03-11 22:29:46 +00:00
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bool X86TargetMachine::addAssemblyEmitter(PassManagerBase &PM, bool Fast,
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2006-09-04 04:14:57 +00:00
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std::ostream &Out) {
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2008-08-17 13:53:59 +00:00
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assert(AsmPrinterCtor && "AsmPrinter was not linked in");
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if (AsmPrinterCtor)
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PM.add(AsmPrinterCtor(Out, *this));
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2006-09-04 04:14:57 +00:00
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return false;
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}
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2002-10-29 22:37:54 +00:00
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2008-03-11 22:29:46 +00:00
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bool X86TargetMachine::addCodeEmitter(PassManagerBase &PM, bool Fast,
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2007-07-20 21:56:13 +00:00
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bool DumpAsm, MachineCodeEmitter &MCE) {
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2006-09-04 18:48:41 +00:00
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// FIXME: Move this to TargetJITInfo!
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2008-08-12 21:02:08 +00:00
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// On Darwin, do not override 64-bit setting made in X86TargetMachine().
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if (DefRelocModel == Reloc::Default &&
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(!Subtarget.isTargetDarwin() || !Subtarget.is64Bit()))
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2007-12-22 09:40:20 +00:00
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setRelocationModel(Reloc::Static);
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2007-01-12 19:20:47 +00:00
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2008-08-11 23:46:25 +00:00
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// 64-bit JIT places everything in the same buffer except external functions.
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2008-08-12 21:02:08 +00:00
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// On Darwin, use small code model but hack the call instruction for
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// externals. Elsewhere, do not assume globals are in the lower 4G.
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if (Subtarget.is64Bit()) {
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if (Subtarget.isTargetDarwin())
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setCodeModel(CodeModel::Small);
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else
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setCodeModel(CodeModel::Large);
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}
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2006-12-20 01:03:20 +00:00
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2006-07-25 20:40:54 +00:00
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PM.add(createX86CodeEmitterPass(*this, MCE));
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2008-08-17 13:53:59 +00:00
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if (DumpAsm) {
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assert(AsmPrinterCtor && "AsmPrinter was not linked in");
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if (AsmPrinterCtor)
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PM.add(AsmPrinterCtor(*cerr.stream(), *this));
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}
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2007-07-20 21:56:13 +00:00
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2005-07-11 05:17:48 +00:00
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return false;
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}
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2007-02-08 01:39:44 +00:00
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2008-03-11 22:29:46 +00:00
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bool X86TargetMachine::addSimpleCodeEmitter(PassManagerBase &PM, bool Fast,
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2007-07-20 21:56:13 +00:00
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bool DumpAsm, MachineCodeEmitter &MCE) {
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2007-02-08 01:39:44 +00:00
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PM.add(createX86CodeEmitterPass(*this, MCE));
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2008-08-17 13:53:59 +00:00
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if (DumpAsm) {
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assert(AsmPrinterCtor && "AsmPrinter was not linked in");
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if (AsmPrinterCtor)
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PM.add(AsmPrinterCtor(*cerr.stream(), *this));
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}
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2007-02-08 01:39:44 +00:00
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return false;
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}
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