Reduce the exposure of Triple::OSType in the ELF object writer. This will
avoid including ADT/Triple.h in many places when the target specific bits are
moved.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147059 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/PowerPC/MCTargetDesc/PPCAsmBackend.cpp b/lib/Target/PowerPC/MCTargetDesc/PPCAsmBackend.cpp
index 34a5774..f58e34a 100644
--- a/lib/Target/PowerPC/MCTargetDesc/PPCAsmBackend.cpp
+++ b/lib/Target/PowerPC/MCTargetDesc/PPCAsmBackend.cpp
@@ -59,9 +59,9 @@
 
 class PPCELFObjectWriter : public MCELFObjectTargetWriter {
 public:
-  PPCELFObjectWriter(bool Is64Bit, Triple::OSType OSType, uint16_t EMachine,
+  PPCELFObjectWriter(bool Is64Bit, uint8_t OSABI, uint16_t EMachine,
                      bool HasRelocationAddend, bool isLittleEndian)
-    : MCELFObjectTargetWriter(Is64Bit, OSType, EMachine, HasRelocationAddend) {}
+    : MCELFObjectTargetWriter(Is64Bit, OSABI, EMachine, HasRelocationAddend) {}
 };
 
 class PPCAsmBackend : public MCAsmBackend {
@@ -154,10 +154,10 @@
   };
 
   class ELFPPCAsmBackend : public PPCAsmBackend {
-    Triple::OSType OSType;
+    uint8_t OSABI;
   public:
-    ELFPPCAsmBackend(const Target &T, Triple::OSType OSType) :
-      PPCAsmBackend(T), OSType(OSType) { }
+    ELFPPCAsmBackend(const Target &T, uint8_t OSABI) :
+      PPCAsmBackend(T), OSABI(OSABI) { }
     
     void ApplyFixup(const MCFixup &Fixup, char *Data, unsigned DataSize,
                     uint64_t Value) const {
@@ -177,7 +177,7 @@
       bool is64 = getPointerSize() == 8;
       return createELFObjectWriter(new PPCELFObjectWriter(
                                       /*Is64Bit=*/is64,
-                                      OSType,
+                                      OSABI,
                                       is64 ? ELF::EM_PPC64 : ELF::EM_PPC,                                      
                                       /*addend*/ true, /*isLittleEndian*/ false),
                                    OS, /*IsLittleEndian=*/false);
@@ -197,5 +197,6 @@
   if (Triple(TT).isOSDarwin())
     return new DarwinPPCAsmBackend(T);
 
-  return new ELFPPCAsmBackend(T, Triple(TT).getOS());
+  uint8_t OSABI = MCELFObjectTargetWriter::getOSABI(Triple(TT).getOS());
+  return new ELFPPCAsmBackend(T, OSABI);
 }