Minor changes to improve comments and fix the build on _WIN32 systems.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22391 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/X86/X86Subtarget.cpp b/lib/Target/X86/X86Subtarget.cpp
index e50d2d6..1c16156 100644
--- a/lib/Target/X86/X86Subtarget.cpp
+++ b/lib/Target/X86/X86Subtarget.cpp
@@ -21,7 +21,7 @@
     asmLeadingUnderscore(false), asmAlignmentIsInBytes(false),
     asmPrintDotLocalConstants(false), asmPrintDotLCommConstants(false),
     asmPrintConstantAlignment(false) {
-  // Declare a boolean for each platform
+  // Declare a boolean for each major platform.
   bool forCygwin = false;
   bool forDarwin = false;
   bool forWindows = false;
@@ -40,20 +40,18 @@
 #elif defined(__APPLE__)
     forDarwin = true;
 #elif defined(_WIN32)
-    forWindws = true;
+    forWindows = true;
 #endif
   }
 
   if (forCygwin) {
     asmLeadingUnderscore = true;
-  }
-  if (forDarwin) {
+  } else if (forDarwin) {
     stackAlignment = 16;
     indirectExternAndWeakGlobals = true;
     asmDarwinLinkerStubs = true;
     asmLeadingUnderscore = true;
     asmPrintDotLCommConstants = true;
-  }
-  if (forWindows) {
+  } else if (forWindows) {
   }
 }