Remove some 'else' after 'return'. No functional change.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155330 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/X86/X86ISelLowering.cpp b/lib/Target/X86/X86ISelLowering.cpp
index 0ebf7d5..bc46693 100644
--- a/lib/Target/X86/X86ISelLowering.cpp
+++ b/lib/Target/X86/X86ISelLowering.cpp
@@ -1273,7 +1273,6 @@
         break;
     }
   }
-  return;
 }
 
 /// getByValTypeAlignment - Return the desired alignment for ByVal aggregate
@@ -7321,7 +7320,10 @@
         return LowerToTLSExecModel(GA, DAG, getPointerTy(), model,
                                    Subtarget->is64Bit());
     }
-  } else if (Subtarget->isTargetDarwin()) {
+    llvm_unreachable("Unknown TLS model.");
+  }
+
+  if (Subtarget->isTargetDarwin()) {
     // Darwin only has one model of TLS.  Lower to that.
     unsigned char OpFlag = 0;
     unsigned WrapperKind = Subtarget->isPICStyleRIPRel() ?
@@ -7364,7 +7366,9 @@
     unsigned Reg = Subtarget->is64Bit() ? X86::RAX : X86::EAX;
     return DAG.getCopyFromReg(Chain, DL, Reg, getPointerTy(),
                               Chain.getValue(1));
-  } else if (Subtarget->isTargetWindows()) {
+  }
+
+  if (Subtarget->isTargetWindows()) {
     // Just use the implicit TLS architecture
     // Need to generate someting similar to:
     //   mov     rdx, qword [gs:abs 58H]; Load pointer to ThreadLocalStorage