Hookup ELF support for X86.

[oota-llvm.git] / lib / Target / X86 / X86TargetMachine.cpp

diff --git a/lib/Target/X86/X86TargetMachine.cpp b/lib/Target/X86/X86TargetMachine.cpp
index a0d7cf661936e27b16750bbed8e67aa8afaea6df..3c8e7f1d339d47c18713938f282542cf07cb72e8 100644 (file)
--- a/lib/Target/X86/X86TargetMachine.cpp
+++ b/lib/Target/X86/X86TargetMachine.cpp
@@ -46,8 +46,15 @@ static MCStreamer *createMCStreamer(const Target &T, const std::string &TT,
                                     bool RelaxAll) {
   Triple TheTriple(TT);
   switch (TheTriple.getOS()) {
-  default:
+  case Triple::Darwin:
     return createMachOStreamer(Ctx, TAB, _OS, _Emitter, RelaxAll);
+  case Triple::MinGW32:
+  case Triple::MinGW64:
+  case Triple::Cygwin:
+  case Triple::Win32:
+    return createWinCOFFStreamer(Ctx, TAB, *_Emitter, _OS, RelaxAll);
+  default:
+    return createELFStreamer(Ctx, TAB, _OS, _Emitter, RelaxAll);
   }
 }
 
@@ -173,14 +180,15 @@ bool X86TargetMachine::addInstSelector(PassManagerBase &PM,
   // Install an instruction selector.
   PM.add(createX86ISelDag(*this, OptLevel));
 
+  // For 32-bit, prepend instructions to set the "global base reg" for PIC.
+  if (!Subtarget.is64Bit())
+    PM.add(createGlobalBaseRegPass());
+
   return false;
 }
 
 bool X86TargetMachine::addPreRegAlloc(PassManagerBase &PM,
                                       CodeGenOpt::Level OptLevel) {
-  // Install a pass to insert x87 FP_REG_KILL instructions, as needed.
-  PM.add(createX87FPRegKillInserterPass());
-
   PM.add(createX86MaxStackAlignmentHeuristicPass());
   return false;  // -print-machineinstr shouldn't print after this.
 }