[PATCH] [COFF] Don't try to add quotes to already quoted linker directives

[David Majnemer]

================
Comment at: lib/CodeGen/TargetLoweringObjectFileImpl.cpp:989
@@ -988,3 +988,3 @@
       std::string Escaped(" ");
-      if (Op.find(" ") != StringRef::npos) {
+      if ((Op.find(" ") != StringRef::npos) && (!Op.startswith("\""))) {
         // The PE-COFF spec says args with spaces must be quoted.  It doesn't say
----------------
This would probably be a little nicer as:
`if (!Op.startswith("\"") && Op.find(" ") != StringRef::npos)`

This way we don't need to hunt for spaces if it starts with a \" sequence.

http://reviews.llvm.org/D6792

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