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			460 lines
		
	
	
		
			12 KiB
		
	
	
	
		
			C++
		
	
	
	
	
	
			
		
		
	
	
			460 lines
		
	
	
		
			12 KiB
		
	
	
	
		
			C++
		
	
	
	
	
	
| //===--- Triple.cpp - Target triple helper class --------------------------===//
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| //
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| //                     The LLVM Compiler Infrastructure
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| //
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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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| //
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| //===----------------------------------------------------------------------===//
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| 
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| #include "llvm/ADT/Triple.h"
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| 
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| #include "llvm/ADT/SmallString.h"
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| #include "llvm/ADT/Twine.h"
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| #include <cassert>
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| #include <cstring>
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| using namespace llvm;
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| 
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| //
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| 
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| const char *Triple::getArchTypeName(ArchType Kind) {
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|   switch (Kind) {
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|   case InvalidArch: return "<invalid>";
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|   case UnknownArch: return "unknown";
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|     
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|   case alpha:   return "alpha";
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|   case arm:     return "arm";
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|   case bfin:    return "bfin";
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|   case cellspu: return "cellspu";
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|   case mips:    return "mips";
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|   case mipsel:  return "mipsel";
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|   case msp430:  return "msp430";
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|   case pic16:   return "pic16";
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|   case ppc64:   return "powerpc64";
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|   case ppc:     return "powerpc";
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|   case sparc:   return "sparc";
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|   case systemz: return "s390x";
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|   case tce:     return "tce";
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|   case thumb:   return "thumb";
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|   case x86:     return "i386";
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|   case x86_64:  return "x86_64";
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|   case xcore:   return "xcore";
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|   }
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| 
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|   return "<invalid>";
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| }
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| 
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| const char *Triple::getArchTypePrefix(ArchType Kind) {
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|   switch (Kind) {
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|   default:
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|     return 0;
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| 
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|   case alpha:   return "alpha";
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| 
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|   case arm:
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|   case thumb:   return "arm";
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| 
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|   case bfin:    return "bfin";
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| 
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|   case cellspu: return "spu";
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| 
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|   case ppc64:
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|   case ppc:     return "ppc";
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| 
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|   case sparc:   return "sparc";
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| 
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|   case x86:
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|   case x86_64:  return "x86";
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|   case xcore:   return "xcore";
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|   }
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| }
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| 
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| const char *Triple::getVendorTypeName(VendorType Kind) {
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|   switch (Kind) {
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|   case UnknownVendor: return "unknown";
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| 
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|   case Apple: return "apple";
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|   case PC: return "pc";
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|   }
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| 
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|   return "<invalid>";
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| }
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| 
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| const char *Triple::getOSTypeName(OSType Kind) {
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|   switch (Kind) {
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|   case UnknownOS: return "unknown";
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| 
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|   case AuroraUX: return "auroraux";
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|   case Cygwin: return "cygwin";
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|   case Darwin: return "darwin";
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|   case DragonFly: return "dragonfly";
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|   case FreeBSD: return "freebsd";
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|   case Linux: return "linux";
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|   case Lv2: return "lv2";
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|   case MinGW32: return "mingw32";
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|   case MinGW64: return "mingw64";
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|   case NetBSD: return "netbsd";
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|   case OpenBSD: return "openbsd";
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|   case Psp: return "psp";
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|   case Solaris: return "solaris";
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|   case Win32: return "win32";
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|   case Haiku: return "haiku";
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|   }
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| 
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|   return "<invalid>";
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| }
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| 
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| Triple::ArchType Triple::getArchTypeForLLVMName(StringRef Name) {
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|   if (Name == "alpha")
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|     return alpha;
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|   if (Name == "arm")
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|     return arm;
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|   if (Name == "bfin")
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|     return bfin;
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|   if (Name == "cellspu")
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|     return cellspu;
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|   if (Name == "mips")
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|     return mips;
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|   if (Name == "mipsel")
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|     return mipsel;
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|   if (Name == "msp430")
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|     return msp430;
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|   if (Name == "pic16")
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|     return pic16;
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|   if (Name == "ppc64")
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|     return ppc64;
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|   if (Name == "ppc")
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|     return ppc;
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|   if (Name == "sparc")
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|     return sparc;
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|   if (Name == "systemz")
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|     return systemz;
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|   if (Name == "tce")
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|     return tce;
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|   if (Name == "thumb")
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|     return thumb;
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|   if (Name == "x86")
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|     return x86;
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|   if (Name == "x86-64")
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|     return x86_64;
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|   if (Name == "xcore")
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|     return xcore;
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| 
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|   return UnknownArch;
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| }
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| 
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| Triple::ArchType Triple::getArchTypeForDarwinArchName(StringRef Str) {
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|   // See arch(3) and llvm-gcc's driver-driver.c. We don't implement support for
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|   // archs which Darwin doesn't use.
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| 
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|   // The matching this routine does is fairly pointless, since it is neither the
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|   // complete architecture list, nor a reasonable subset. The problem is that
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|   // historically the driver driver accepts this and also ties its -march=
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|   // handling to the architecture name, so we need to be careful before removing
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|   // support for it.
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| 
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|   // This code must be kept in sync with Clang's Darwin specific argument
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|   // translation.
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| 
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|   if (Str == "ppc" || Str == "ppc601" || Str == "ppc603" || Str == "ppc604" ||
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|       Str == "ppc604e" || Str == "ppc750" || Str == "ppc7400" ||
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|       Str == "ppc7450" || Str == "ppc970")
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|     return Triple::ppc;
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| 
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|   if (Str == "ppc64")
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|     return Triple::ppc64;
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| 
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|   if (Str == "i386" || Str == "i486" || Str == "i486SX" || Str == "pentium" ||
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|       Str == "i586" || Str == "pentpro" || Str == "i686" || Str == "pentIIm3" ||
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|       Str == "pentIIm5" || Str == "pentium4")
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|     return Triple::x86;
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| 
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|   if (Str == "x86_64")
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|     return Triple::x86_64;
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| 
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|   // This is derived from the driver driver.
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|   if (Str == "arm" || Str == "armv4t" || Str == "armv5" || Str == "xscale" ||
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|       Str == "armv6" || Str == "armv7")
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|     return Triple::arm;
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| 
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|   return Triple::UnknownArch;
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| }
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| 
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| // Returns architecture name that is unsderstood by the target assembler.
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| const char *Triple::getArchNameForAssembler() {
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|   if (getOS() != Triple::Darwin && getVendor() != Triple::Apple)
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|     return NULL;
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| 
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|   StringRef Str = getArchName();
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|   if (Str == "i386")
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|     return "i386";
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|   if (Str == "x86_64")
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|     return "x86_64";
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|   if (Str == "powerpc")
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|     return "ppc";
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|   if (Str == "powerpc64")
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|     return "ppc64";
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|   if (Str == "arm")
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|     return "arm";
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|   if (Str == "armv4t" || Str == "thumbv4t")
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|     return "armv4t";
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|   if (Str == "armv5" || Str == "armv5e" || Str == "thumbv5" || Str == "thumbv5e")
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|     return "armv5";
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|   if (Str == "armv6" || Str == "thumbv6")
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|     return "armv6";
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|   if (Str == "armv7" || Str == "thumbv7")
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|     return "armv7";
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|   return NULL;
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| }
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| 
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| //
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| 
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| void Triple::Parse() const {
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|   assert(!isInitialized() && "Invalid parse call.");
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| 
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|   StringRef ArchName = getArchName();
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|   StringRef VendorName = getVendorName();
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|   StringRef OSName = getOSName();
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| 
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|   if (ArchName.size() == 4 && ArchName[0] == 'i' && 
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|       ArchName[2] == '8' && ArchName[3] == '6' && 
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|       ArchName[1] - '3' < 6) // i[3-9]86
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|     Arch = x86;
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|   else if (ArchName == "amd64" || ArchName == "x86_64")
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|     Arch = x86_64;
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|   else if (ArchName == "bfin")
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|     Arch = bfin;
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|   else if (ArchName == "pic16")
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|     Arch = pic16;
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|   else if (ArchName == "powerpc")
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|     Arch = ppc;
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|   else if ((ArchName == "powerpc64") || (ArchName == "ppu"))
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|     Arch = ppc64;
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|   else if (ArchName == "arm" ||
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|            ArchName.startswith("armv") ||
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|            ArchName == "xscale")
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|     Arch = arm;
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|   else if (ArchName == "thumb" ||
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|            ArchName.startswith("thumbv"))
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|     Arch = thumb;
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|   else if (ArchName.startswith("alpha"))
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|     Arch = alpha;
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|   else if (ArchName == "spu" || ArchName == "cellspu")
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|     Arch = cellspu;
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|   else if (ArchName == "msp430")
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|     Arch = msp430;
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|   else if (ArchName == "mips" || ArchName == "mipsallegrex")
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|     Arch = mips;
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|   else if (ArchName == "mipsel" || ArchName == "mipsallegrexel" ||
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|            ArchName == "psp")
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|     Arch = mipsel;
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|   else if (ArchName == "sparc")
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|     Arch = sparc;
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|   else if (ArchName == "s390x")
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|     Arch = systemz;
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|   else if (ArchName == "tce")
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|     Arch = tce;
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|   else if (ArchName == "xcore")
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|     Arch = xcore;
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|   else
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|     Arch = UnknownArch;
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| 
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| 
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|   // Handle some exceptional cases where the OS / environment components are
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|   // stuck into the vendor field.
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|   if (StringRef(getTriple()).count('-') == 1) {
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|     StringRef VendorName = getVendorName();
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| 
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|     if (VendorName.startswith("mingw32")) { // 'i386-mingw32', etc.
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|       Vendor = PC;
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|       OS = MinGW32;
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|       return;
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|     }
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| 
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|     // arm-elf is another example, but we don't currently parse anything about
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|     // the environment.
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|   }
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| 
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|   if (VendorName == "apple")
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|     Vendor = Apple;
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|   else if (VendorName == "pc")
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|     Vendor = PC;
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|   else
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|     Vendor = UnknownVendor;
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| 
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|   if (OSName.startswith("auroraux"))
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|     OS = AuroraUX;
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|   else if (OSName.startswith("cygwin"))
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|     OS = Cygwin;
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|   else if (OSName.startswith("darwin"))
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|     OS = Darwin;
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|   else if (OSName.startswith("dragonfly"))
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|     OS = DragonFly;
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|   else if (OSName.startswith("freebsd"))
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|     OS = FreeBSD;
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|   else if (OSName.startswith("linux"))
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|     OS = Linux;
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|   else if (OSName.startswith("lv2"))
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|     OS = Lv2;
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|   else if (OSName.startswith("mingw32"))
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|     OS = MinGW32;
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|   else if (OSName.startswith("mingw64"))
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|     OS = MinGW64;
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|   else if (OSName.startswith("netbsd"))
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|     OS = NetBSD;
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|   else if (OSName.startswith("openbsd"))
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|     OS = OpenBSD;
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|   else if (OSName.startswith("psp"))
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|     OS = Psp;
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|   else if (OSName.startswith("solaris"))
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|     OS = Solaris;
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|   else if (OSName.startswith("win32"))
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|     OS = Win32;
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|   else if (OSName.startswith("haiku"))
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|   	OS = Haiku;
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|   else
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|     OS = UnknownOS;
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| 
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|   assert(isInitialized() && "Failed to initialize!");
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| }
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| 
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| StringRef Triple::getArchName() const {
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|   return StringRef(Data).split('-').first;           // Isolate first component
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| }
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| 
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| StringRef Triple::getVendorName() const {
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|   StringRef Tmp = StringRef(Data).split('-').second; // Strip first component
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|   return Tmp.split('-').first;                       // Isolate second component
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| }
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| 
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| StringRef Triple::getOSName() const {
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|   StringRef Tmp = StringRef(Data).split('-').second; // Strip first component
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|   Tmp = Tmp.split('-').second;                       // Strip second component
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|   return Tmp.split('-').first;                       // Isolate third component
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| }
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| 
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| StringRef Triple::getEnvironmentName() const {
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|   StringRef Tmp = StringRef(Data).split('-').second; // Strip first component
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|   Tmp = Tmp.split('-').second;                       // Strip second component
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|   return Tmp.split('-').second;                      // Strip third component
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| }
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| 
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| StringRef Triple::getOSAndEnvironmentName() const {
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|   StringRef Tmp = StringRef(Data).split('-').second; // Strip first component
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|   return Tmp.split('-').second;                      // Strip second component
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| }
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| 
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| static unsigned EatNumber(StringRef &Str) {
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|   assert(!Str.empty() && Str[0] >= '0' && Str[0] <= '9' && "Not a number");
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|   unsigned Result = Str[0]-'0';
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|   
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|   // Eat the digit.
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|   Str = Str.substr(1);
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|   
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|   // Handle "darwin11".
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|   if (Result == 1 && !Str.empty() && Str[0] >= '0' && Str[0] <= '9') {
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|     Result = Result*10 + (Str[0] - '0');
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|     // Eat the digit.
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|     Str = Str.substr(1);
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|   }
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|   
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|   return Result;
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| }
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| 
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| /// getDarwinNumber - Parse the 'darwin number' out of the specific target
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| /// triple.  For example, if we have darwin8.5 return 8,5,0.  If any entry is
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| /// not defined, return 0's.  This requires that the triple have an OSType of
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| /// darwin before it is called.
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| void Triple::getDarwinNumber(unsigned &Maj, unsigned &Min,
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|                              unsigned &Revision) const {
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|   assert(getOS() == Darwin && "Not a darwin target triple!");
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|   StringRef OSName = getOSName();
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|   assert(OSName.startswith("darwin") && "Unknown darwin target triple!");
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|   
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|   // Strip off "darwin".
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|   OSName = OSName.substr(6);
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|   
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|   Maj = Min = Revision = 0;
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| 
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|   if (OSName.empty() || OSName[0] < '0' || OSName[0] > '9')
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|     return;
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| 
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|   // The major version is the first digit.
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|   Maj = EatNumber(OSName);
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|   if (OSName.empty()) return;
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|   
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|   // Handle minor version: 10.4.9 -> darwin8.9.
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|   if (OSName[0] != '.')
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|     return;
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|   
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|   // Eat the '.'.
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|   OSName = OSName.substr(1);
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| 
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|   if (OSName.empty() || OSName[0] < '0' || OSName[0] > '9')
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|     return;
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|   
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|   Min = EatNumber(OSName);
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|   if (OSName.empty()) return;
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| 
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|   // Handle revision darwin8.9.1
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|   if (OSName[0] != '.')
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|     return;
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|   
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|   // Eat the '.'.
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|   OSName = OSName.substr(1);
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|   
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|   if (OSName.empty() || OSName[0] < '0' || OSName[0] > '9')
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|     return;
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| 
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|   Revision = EatNumber(OSName);
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| }
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| 
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| void Triple::setTriple(const Twine &Str) {
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|   Data = Str.str();
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|   Arch = InvalidArch;
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| }
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| 
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| void Triple::setArch(ArchType Kind) {
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|   setArchName(getArchTypeName(Kind));
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| }
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| 
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| void Triple::setVendor(VendorType Kind) {
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|   setVendorName(getVendorTypeName(Kind));
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| }
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| 
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| void Triple::setOS(OSType Kind) {
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|   setOSName(getOSTypeName(Kind));
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| }
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| 
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| void Triple::setArchName(StringRef Str) {
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|   // Work around a miscompilation bug for Twines in gcc 4.0.3.
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|   SmallString<64> Triple;
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|   Triple += Str;
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|   Triple += "-";
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|   Triple += getVendorName();
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|   Triple += "-";
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|   Triple += getOSAndEnvironmentName();
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|   setTriple(Triple.str());
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| }
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| 
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| void Triple::setVendorName(StringRef Str) {
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|   setTriple(getArchName() + "-" + Str + "-" + getOSAndEnvironmentName());
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| }
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| 
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| void Triple::setOSName(StringRef Str) {
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|   if (hasEnvironment())
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|     setTriple(getArchName() + "-" + getVendorName() + "-" + Str +
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|               "-" + getEnvironmentName());
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|   else
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|     setTriple(getArchName() + "-" + getVendorName() + "-" + Str);
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| }
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| 
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| void Triple::setEnvironmentName(StringRef Str) {
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|   setTriple(getArchName() + "-" + getVendorName() + "-" + getOSName() +
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|             "-" + Str);
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| }
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| 
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| void Triple::setOSAndEnvironmentName(StringRef Str) {
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|   setTriple(getArchName() + "-" + getVendorName() + "-" + Str);
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| }
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