Add Triple::getArchTypeForDarwinArchName, which converts a "Darwin" architecture

name (e.g. "ppc") to the appropriate constant.

Also, StringRefize additional Triple constructor.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@81274 91177308-0d34-0410-b5e6-96231b3b80d8

2 files changed, 45 insertions, 2 deletions

diff --git a/include/llvm/ADT/Triple.h b/include/llvm/ADT/Triple.h
index 03ecd70..89736bc 100644
--- a/include/llvm/ADT/Triple.h
+++ b/include/llvm/ADT/Triple.h
@@ -118,8 +118,8 @@ public:
   /// @{
   
   Triple() : Data(), Arch(InvalidArch) {}
-  explicit Triple(const StringRef &Str) : Data(Str), Arch(InvalidArch) {}
-  explicit Triple(const char *ArchStr, const char *VendorStr, const char *OSStr)
+  explicit Triple(StringRef Str) : Data(Str), Arch(InvalidArch) {}
+  explicit Triple(StringRef ArchStr, StringRef VendorStr, StringRef OSStr)
     : Data(ArchStr), Arch(InvalidArch) {
     Data += '-';
     Data += VendorStr;
@@ -258,10 +258,19 @@ public:
   /// getOSTypeName - Get the canonical name for the \arg Kind vendor.
   static const char *getOSTypeName(OSType Kind);
 
+  /// @}
+  /// @name Static helpers for converting alternate architecture names.
+  /// @{
+
   /// getArchTypeForLLVMName - The canonical type for the given LLVM
   /// architecture name (e.g., "x86").
   static ArchType getArchTypeForLLVMName(const StringRef &Str);
 
+  /// getArchTypeForDarwinArchName - Get the architecture type for a "Darwin"
+  /// architecture name, for example as accepted by "gcc -arch" (see also
+  /// arch(3)).
+  static ArchType getArchTypeForDarwinArchName(const StringRef &Str);
+
   /// @}
 };
 
diff --git a/lib/Support/Triple.cpp b/lib/Support/Triple.cpp
index 8b48247..e986fb8 100644
--- a/lib/Support/Triple.cpp
+++ b/lib/Support/Triple.cpp
@@ -139,6 +139,40 @@ Triple::ArchType Triple::getArchTypeForLLVMName(const StringRef &Name) {
   return UnknownArch;
 }
 
+Triple::ArchType Triple::getArchTypeForDarwinArchName(const 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.
+
+  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;
+
+  return Triple::UnknownArch;
+}
+
 //
 
 void Triple::Parse() const {