Retrying r91337:

The CIE says that the LSDA point in the FDE section is an "sdata4". That's fine,
but we need it to actually be 4-bytes in the FDE for some platforms. Allow
individual platforms to decide for themselves.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@93616 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Target/X86/X86TargetMachine.cpp

@@ -249,3 +249,10 @@ void X86TargetMachine::setCodeModelForJIT() {
   else
     setCodeModel(CodeModel::Small);
 }
+
+DwarfLSDAEncoding::Encoding X86TargetMachine::getLSDAEncoding() const {
+  if (Subtarget.isTargetDarwin() && Subtarget.getDarwinVers() > 10)
+    return DwarfLSDAEncoding::FourByte;
+
+  return DwarfLSDAEncoding::Default;
+}