OSchip
/
llvm-project
mirror of https://github.com/THU-DSP-LAB/llvm-project.git
13
0
Fork 6
Code Issues Packages Projects Releases Wiki Activity
llvm-project/llvm/lib/Support/Triple.cpp

634 lines
18 KiB
C++
Raw Blame History

//===--- Triple.cpp - Target triple helper class --------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "llvm/ADT/Triple.h"
#include "llvm/ADT/SmallString.h"
#include "llvm/ADT/STLExtras.h"
#include "llvm/ADT/Twine.h"
#include <cassert>
#include <cstring>
using namespace llvm;
//
const char *Triple::getArchTypeName(ArchType Kind) {
switch (Kind) {
case InvalidArch: return "<invalid>";
case UnknownArch: return "unknown";
case alpha: return "alpha";
case arm: return "arm";
case bfin: return "bfin";
case cellspu: return "cellspu";
case mips: return "mips";
case mipsel: return "mipsel";
case msp430: return "msp430";
case pic16: return "pic16";
case ppc64: return "powerpc64";
case ppc: return "powerpc";
case sparc: return "sparc";
case sparcv9: return "sparcv9";
case systemz: return "s390x";
case tce: return "tce";
case thumb: return "thumb";
case x86: return "i386";
case x86_64: return "x86_64";
case xcore: return "xcore";
case mblaze: return "mblaze";
case ptx: return "ptx";
}
return "<invalid>";
}
const char *Triple::getArchTypePrefix(ArchType Kind) {
switch (Kind) {
default:
return 0;
case alpha: return "alpha";
case arm:
case thumb: return "arm";
case bfin: return "bfin";
case cellspu: return "spu";
case ppc64:
case ppc: return "ppc";
case mblaze: return "mblaze";
case sparcv9:
case sparc: return "sparc";
case x86:
case x86_64: return "x86";
case xcore: return "xcore";
case ptx: return "ptx";
}
}
const char *Triple::getVendorTypeName(VendorType Kind) {
switch (Kind) {
case UnknownVendor: return "unknown";
case Apple: return "apple";
case PC: return "pc";
}
return "<invalid>";
}
const char *Triple::getOSTypeName(OSType Kind) {
switch (Kind) {
case UnknownOS: return "unknown";
case AuroraUX: return "auroraux";
case Cygwin: return "cygwin";
case Darwin: return "darwin";
case DragonFly: return "dragonfly";
case FreeBSD: return "freebsd";
case Linux: return "linux";
case Lv2: return "lv2";
case MinGW32: return "mingw32";
case MinGW64: return "mingw64";
case NetBSD: return "netbsd";
case OpenBSD: return "openbsd";
case Psp: return "psp";
case Solaris: return "solaris";
case Win32: return "win32";
case Haiku: return "haiku";
case Minix: return "minix";
}
return "<invalid>";
}
const char *Triple::getEnvironmentTypeName(EnvironmentType Kind) {
switch (Kind) {
case UnknownEnvironment: return "unknown";
}
return "<invalid>";
}
Triple::ArchType Triple::getArchTypeForLLVMName(StringRef Name) {
if (Name == "alpha")
return alpha;
if (Name == "arm")
return arm;
if (Name == "bfin")
return bfin;
if (Name == "cellspu")
return cellspu;
if (Name == "mips")
return mips;
if (Name == "mipsel")
return mipsel;
if (Name == "msp430")
return msp430;
if (Name == "pic16")
return pic16;
if (Name == "ppc64")
return ppc64;
if (Name == "ppc")
return ppc;
if (Name == "mblaze")
return mblaze;
if (Name == "sparc")
return sparc;
if (Name == "sparcv9")
return sparcv9;
if (Name == "systemz")
return systemz;
if (Name == "tce")
return tce;
if (Name == "thumb")
return thumb;
if (Name == "x86")
return x86;
if (Name == "x86-64")
return x86_64;
if (Name == "xcore")
return xcore;
if (Name == "ptx")
return ptx;
return UnknownArch;
}
Triple::ArchType Triple::getArchTypeForDarwinArchName(StringRef Str) {
// See arch(3) and llvm-gcc's driver-driver.c. We don't implement support for
// archs which Darwin doesn't use.
// The matching this routine does is fairly pointless, since it is neither the
// complete architecture list, nor a reasonable subset. The problem is that
// historically the driver driver accepts this and also ties its -march=
// handling to the architecture name, so we need to be careful before removing
// support for it.
// This code must be kept in sync with Clang's Darwin specific argument
// translation.
if (Str == "ppc" || Str == "ppc601" || Str == "ppc603" || Str == "ppc604" ||
Str == "ppc604e" || Str == "ppc750" || Str == "ppc7400" ||
Str == "ppc7450" || Str == "ppc970")
return Triple::ppc;
if (Str == "ppc64")
return Triple::ppc64;
if (Str == "i386" || Str == "i486" || Str == "i486SX" || Str == "pentium" ||
Str == "i586" || Str == "pentpro" || Str == "i686" || Str == "pentIIm3" ||
Str == "pentIIm5" || Str == "pentium4")
return Triple::x86;
if (Str == "x86_64")
return Triple::x86_64;
// This is derived from the driver driver.
if (Str == "arm" || Str == "armv4t" || Str == "armv5" || Str == "xscale" ||
Str == "armv6" || Str == "armv7")
return Triple::arm;
if (Str == "ptx")
return Triple::ptx;
return Triple::UnknownArch;
}
// Returns architecture name that is understood by the target assembler.
const char *Triple::getArchNameForAssembler() {
if (getOS() != Triple::Darwin && getVendor() != Triple::Apple)
return NULL;
StringRef Str = getArchName();
if (Str == "i386")
return "i386";
if (Str == "x86_64")
return "x86_64";
if (Str == "powerpc")
return "ppc";
if (Str == "powerpc64")
return "ppc64";
if (Str == "mblaze" || Str == "microblaze")
return "mblaze";
if (Str == "arm")
return "arm";
if (Str == "armv4t" || Str == "thumbv4t")
return "armv4t";
if (Str == "armv5" || Str == "armv5e" || Str == "thumbv5" || Str == "thumbv5e")
return "armv5";
if (Str == "armv6" || Str == "thumbv6")
return "armv6";
if (Str == "armv7" || Str == "thumbv7")
return "armv7";
if (Str == "ptx")
return "ptx";
return NULL;
}
//
Triple::ArchType Triple::ParseArch(StringRef ArchName) {
if (ArchName.size() == 4 && ArchName[0] == 'i' &&
ArchName[2] == '8' && ArchName[3] == '6' &&
ArchName[1] - '3' < 6) // i[3-9]86
return x86;
else if (ArchName == "amd64" || ArchName == "x86_64")
return x86_64;
else if (ArchName == "bfin")
return bfin;
else if (ArchName == "pic16")
return pic16;
else if (ArchName == "powerpc")
return ppc;
else if ((ArchName == "powerpc64") || (ArchName == "ppu"))
return ppc64;
else if (ArchName == "mblaze")
return mblaze;
else if (ArchName == "arm" ||
ArchName.startswith("armv") ||
ArchName == "xscale")
return arm;
else if (ArchName == "thumb" ||
ArchName.startswith("thumbv"))
return thumb;
else if (ArchName.startswith("alpha"))
return alpha;
else if (ArchName == "spu" || ArchName == "cellspu")
return cellspu;
else if (ArchName == "msp430")
return msp430;
else if (ArchName == "mips" || ArchName == "mipsallegrex")
return mips;
else if (ArchName == "mipsel" || ArchName == "mipsallegrexel" ||
ArchName == "psp")
return mipsel;
else if (ArchName == "sparc")
return sparc;
else if (ArchName == "sparcv9")
return sparcv9;
else if (ArchName == "s390x")
return systemz;
else if (ArchName == "tce")
return tce;
else if (ArchName == "xcore")
return xcore;
else if (ArchName == "ptx")
return ptx;
else
return UnknownArch;
}
Triple::VendorType Triple::ParseVendor(StringRef VendorName) {
if (VendorName == "apple")
return Apple;
else if (VendorName == "pc")
return PC;
else
return UnknownVendor;
}
Triple::OSType Triple::ParseOS(StringRef OSName) {
if (OSName.startswith("auroraux"))
return AuroraUX;
else if (OSName.startswith("cygwin"))
return Cygwin;
else if (OSName.startswith("darwin"))
return Darwin;
else if (OSName.startswith("dragonfly"))
return DragonFly;
else if (OSName.startswith("freebsd"))
return FreeBSD;
else if (OSName.startswith("linux"))
return Linux;
else if (OSName.startswith("lv2"))
return Lv2;
else if (OSName.startswith("mingw32"))
return MinGW32;
else if (OSName.startswith("mingw64"))
return MinGW64;
else if (OSName.startswith("netbsd"))
return NetBSD;
else if (OSName.startswith("openbsd"))
return OpenBSD;
else if (OSName.startswith("psp"))
return Psp;
else if (OSName.startswith("solaris"))
return Solaris;
else if (OSName.startswith("win32"))
return Win32;
else if (OSName.startswith("haiku"))
return Haiku;
else if (OSName.startswith("minix"))
return Minix;
else
return UnknownOS;
}
Triple::EnvironmentType Triple::ParseEnvironment(StringRef EnvironmentName) {
return UnknownEnvironment;
}
void Triple::Parse() const {
assert(!isInitialized() && "Invalid parse call.");
Arch = ParseArch(getArchName());
Vendor = ParseVendor(getVendorName());
OS = ParseOS(getOSName());
Environment = ParseEnvironment(getEnvironmentName());
assert(isInitialized() && "Failed to initialize!");
}
std::string Triple::normalize(StringRef Str) {
// Parse into components.
SmallVector<StringRef, 4> Components;
for (size_t First = 0, Last = 0; Last != StringRef::npos; First = Last + 1) {
Last = Str.find('-', First);
Components.push_back(Str.slice(First, Last));
}
// If the first component corresponds to a known architecture, preferentially
// use it for the architecture. If the second component corresponds to a
// known vendor, preferentially use it for the vendor, etc. This avoids silly
// component movement when a component parses as (eg) both a valid arch and a
// valid os.
ArchType Arch = UnknownArch;
if (Components.size() > 0)
Arch = ParseArch(Components[0]);
VendorType Vendor = UnknownVendor;
if (Components.size() > 1)
Vendor = ParseVendor(Components[1]);
OSType OS = UnknownOS;
if (Components.size() > 2)
OS = ParseOS(Components[2]);
EnvironmentType Environment = UnknownEnvironment;
if (Components.size() > 3)
Environment = ParseEnvironment(Components[3]);
// Note which components are already in their final position. These will not
// be moved.
bool Found[4];
Found[0] = Arch != UnknownArch;
Found[1] = Vendor != UnknownVendor;
Found[2] = OS != UnknownOS;
Found[3] = Environment != UnknownEnvironment;
// If they are not there already, permute the components into their canonical
// positions by seeing if they parse as a valid architecture, and if so moving
// the component to the architecture position etc.
for (unsigned Pos = 0; Pos != array_lengthof(Found); ++Pos) {
if (Found[Pos])
continue; // Already in the canonical position.
for (unsigned Idx = 0; Idx != Components.size(); ++Idx) {
// Do not reparse any components that already matched.
if (Idx < array_lengthof(Found) && Found[Idx])
continue;
// Does this component parse as valid for the target position?
bool Valid = false;
StringRef Comp = Components[Idx];
switch (Pos) {
default:
assert(false && "unexpected component type!");
case 0:
Arch = ParseArch(Comp);
Valid = Arch != UnknownArch;
break;
case 1:
Vendor = ParseVendor(Comp);
Valid = Vendor != UnknownVendor;
break;
case 2:
OS = ParseOS(Comp);
Valid = OS != UnknownOS;
break;
case 3:
Environment = ParseEnvironment(Comp);
Valid = Environment != UnknownEnvironment;
break;
}
if (!Valid)
continue; // Nope, try the next component.
// Move the component to the target position, pushing any non-fixed
// components that are in the way to the right. This tends to give
// good results in the common cases of a forgotten vendor component
// or a wrongly positioned environment.
if (Pos < Idx) {
// Insert left, pushing the existing components to the right. For
// example, a-b-i386 -> i386-a-b when moving i386 to the front.
StringRef CurrentComponent(""); // The empty component.
// Replace the component we are moving with an empty component.
std::swap(CurrentComponent, Components[Idx]);
// Insert the component being moved at Pos, displacing any existing
// components to the right.
for (unsigned i = Pos; !CurrentComponent.empty(); ++i) {
// Skip over any fixed components.
while (i < array_lengthof(Found) && Found[i]) ++i;
// Place the component at the new position, getting the component
// that was at this position - it will be moved right.
std::swap(CurrentComponent, Components[i]);
}
} else if (Pos > Idx) {
// Push right by inserting empty components until the component at Idx
// reaches the target position Pos. For example, pc-a -> -pc-a when
// moving pc to the second position.
do {
// Insert one empty component at Idx.
StringRef CurrentComponent(""); // The empty component.
for (unsigned i = Idx; i < Components.size(); ++i) {
// Skip over any fixed components.
while (i < array_lengthof(Found) && Found[i]) ++i;
// Place the component at the new position, getting the component
// that was at this position - it will be moved right.
std::swap(CurrentComponent, Components[i]);
// If it was placed on top of an empty component then we are done.
if (CurrentComponent.empty())
break;
}
// The last component was pushed off the end - append it.
if (!CurrentComponent.empty())
Components.push_back(CurrentComponent);
// Advance Idx to the component's new position.
while (++Idx < array_lengthof(Found) && Found[Idx]) {}
} while (Idx < Pos); // Add more until the final position is reached.
}
assert(Pos < Components.size() && Components[Pos] == Comp &&
"Component moved wrong!");
Found[Pos] = true;
break;
}
}
// Special case logic goes here. At this point Arch, Vendor and OS have the
// correct values for the computed components.
// Stick the corrected components back together to form the normalized string.
std::string Normalized;
for (unsigned i = 0, e = Components.size(); i != e; ++i) {
if (i) Normalized += '-';
Normalized += Components[i];
}
return Normalized;
}
StringRef Triple::getArchName() const {
return StringRef(Data).split('-').first; // Isolate first component
}
StringRef Triple::getVendorName() const {
StringRef Tmp = StringRef(Data).split('-').second; // Strip first component
return Tmp.split('-').first; // Isolate second component
}
StringRef Triple::getOSName() const {
StringRef Tmp = StringRef(Data).split('-').second; // Strip first component
Tmp = Tmp.split('-').second; // Strip second component
return Tmp.split('-').first; // Isolate third component
}
StringRef Triple::getEnvironmentName() const {
StringRef Tmp = StringRef(Data).split('-').second; // Strip first component
Tmp = Tmp.split('-').second; // Strip second component
return Tmp.split('-').second; // Strip third component
}
StringRef Triple::getOSAndEnvironmentName() const {
StringRef Tmp = StringRef(Data).split('-').second; // Strip first component
return Tmp.split('-').second; // Strip second component
}
static unsigned EatNumber(StringRef &Str) {
assert(!Str.empty() && Str[0] >= '0' && Str[0] <= '9' && "Not a number");
unsigned Result = Str[0]-'0';
// Eat the digit.
Str = Str.substr(1);
// Handle "darwin11".
if (Result == 1 && !Str.empty() && Str[0] >= '0' && Str[0] <= '9') {
Result = Result*10 + (Str[0] - '0');
// Eat the digit.
Str = Str.substr(1);
}
return Result;
}
/// getDarwinNumber - Parse the 'darwin number' out of the specific target
/// triple. For example, if we have darwin8.5 return 8,5,0. If any entry is
/// not defined, return 0's. This requires that the triple have an OSType of
/// darwin before it is called.
void Triple::getDarwinNumber(unsigned &Maj, unsigned &Min,
unsigned &Revision) const {
assert(getOS() == Darwin && "Not a darwin target triple!");
StringRef OSName = getOSName();
assert(OSName.startswith("darwin") && "Unknown darwin target triple!");
// Strip off "darwin".
OSName = OSName.substr(6);
Maj = Min = Revision = 0;
if (OSName.empty() || OSName[0] < '0' || OSName[0] > '9')
return;
// The major version is the first digit.
Maj = EatNumber(OSName);
if (OSName.empty()) return;
// Handle minor version: 10.4.9 -> darwin8.9.
if (OSName[0] != '.')
return;
// Eat the '.'.
OSName = OSName.substr(1);
if (OSName.empty() || OSName[0] < '0' || OSName[0] > '9')
return;
Min = EatNumber(OSName);
if (OSName.empty()) return;
// Handle revision darwin8.9.1
if (OSName[0] != '.')
return;
// Eat the '.'.
OSName = OSName.substr(1);
if (OSName.empty() || OSName[0] < '0' || OSName[0] > '9')
return;
Revision = EatNumber(OSName);
}
void Triple::setTriple(const Twine &Str) {
Data = Str.str();
Arch = InvalidArch;
}
void Triple::setArch(ArchType Kind) {
setArchName(getArchTypeName(Kind));
}
void Triple::setVendor(VendorType Kind) {
setVendorName(getVendorTypeName(Kind));
}
void Triple::setOS(OSType Kind) {
setOSName(getOSTypeName(Kind));
}
void Triple::setEnvironment(EnvironmentType Kind) {
setEnvironmentName(getEnvironmentTypeName(Kind));
}
void Triple::setArchName(StringRef Str) {
// Work around a miscompilation bug for Twines in gcc 4.0.3.
SmallString<64> Triple;
Triple += Str;
Triple += "-";
Triple += getVendorName();
Triple += "-";
Triple += getOSAndEnvironmentName();
setTriple(Triple.str());
}
void Triple::setVendorName(StringRef Str) {
setTriple(getArchName() + "-" + Str + "-" + getOSAndEnvironmentName());
}
void Triple::setOSName(StringRef Str) {
if (hasEnvironment())
setTriple(getArchName() + "-" + getVendorName() + "-" + Str +
"-" + getEnvironmentName());
else
setTriple(getArchName() + "-" + getVendorName() + "-" + Str);
}
void Triple::setEnvironmentName(StringRef Str) {
setTriple(getArchName() + "-" + getVendorName() + "-" + getOSName() +
"-" + Str);
}
void Triple::setOSAndEnvironmentName(StringRef Str) {
setTriple(getArchName() + "-" + getVendorName() + "-" + Str);
}
Reference in New Issue View Git Blame Copy Permalink