[PATCH] X86_64 target now obeys llc -disable-red-zone option

[Rafael Ávila de Espíndola]

I think this is OK.  Grosbach, what do you think?

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Comment at: include/llvm/Target/TargetOptions.h:195
@@ -194,1 +194,3 @@
 
+    /// NoRedZone - This flag is enabled when the -disable-red-zone flag is
+    /// specified on the command line.  When this flag is off (the default),
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Don't duplicate name in comment.

http://reviews.llvm.org/D5681