Have the X86 backend use Triple instead of a string and some enums.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@107625 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 3 insertions, 34 deletions

diff --git a/lib/Target/X86/X86Subtarget.cpp b/lib/Target/X86/X86Subtarget.cpp
index 6eda20dd0c..4a10be518f 100644
--- a/lib/Target/X86/X86Subtarget.cpp
+++ b/lib/Target/X86/X86Subtarget.cpp
@@ -296,12 +296,11 @@ X86Subtarget::X86Subtarget(const std::string &TT, const std::string &FS,
   , IsBTMemSlow(false)
   , IsUAMemFast(false)
   , HasVectorUAMem(false)
-  , DarwinVers(0)
   , stackAlignment(8)
   // FIXME: this is a known good value for Yonah. How about others?
   , MaxInlineSizeThreshold(128)
-  , Is64Bit(is64Bit)
-  , TargetType(isELF) { // Default to ELF unless otherwise specified.
+  , TargetTriple(TT)
+  , Is64Bit(is64Bit) {
 
   // default to hard float ABI
   if (FloatABIType == FloatABI::Default)
@@ -331,45 +330,15 @@ X86Subtarget::X86Subtarget(const std::string &TT, const std::string &FS,
     HasCMov = true;
   }
     
-
   DEBUG(dbgs() << "Subtarget features: SSELevel " << X86SSELevel
                << ", 3DNowLevel " << X863DNowLevel
                << ", 64bit " << HasX86_64 << "\n");
   assert((!Is64Bit || HasX86_64) &&
          "64-bit code requested on a subtarget that doesn't support it!");
 
-  // Set the boolean corresponding to the current target triple, or the default
-  // if one cannot be determined, to true.
-  if (TT.length() > 5) {
-    size_t Pos;
-    if ((Pos = TT.find("-darwin")) != std::string::npos) {
-      TargetType = isDarwin;
-      
-      // Compute the darwin version number.
-      if (isdigit(TT[Pos+7]))
-        DarwinVers = atoi(&TT[Pos+7]);
-      else
-        DarwinVers = 8;  // Minimum supported darwin is Tiger.
-    } else if (TT.find("linux") != std::string::npos) {
-      // Linux doesn't imply ELF, but we don't currently support anything else.
-      TargetType = isELF;
-    } else if (TT.find("cygwin") != std::string::npos) {
-      TargetType = isCygwin;
-    } else if (TT.find("mingw") != std::string::npos) {
-      TargetType = isMingw;
-    } else if (TT.find("win32") != std::string::npos) {
-      TargetType = isWindows;
-    } else if (TT.find("windows") != std::string::npos) {
-      TargetType = isWindows;
-    } else if (TT.find("-cl") != std::string::npos) {
-      TargetType = isDarwin;
-      DarwinVers = 9;
-    }
-  }
-
   // Stack alignment is 16 bytes on Darwin (both 32 and 64 bit) and for all 64
   // bit targets.
-  if (TargetType == isDarwin || Is64Bit)
+  if (isTargetDarwin() || Is64Bit)
     stackAlignment = 16;
 
   if (StackAlignment)