[PATCH] clang-cl: For files setting output names, mention which flags they go with

[Nico Weber]

Hi hans,

It always takes me a while to figure out how to say "preprocess to file foo.txt" with clang-cl. With this, it might be easier.

http://reviews.llvm.org/D10890

Files:
  include/clang/Driver/CLCompatOptions.td

Index: include/clang/Driver/CLCompatOptions.td
===================================================================
--- include/clang/Driver/CLCompatOptions.td
+++ include/clang/Driver/CLCompatOptions.td
@@ -188,7 +188,7 @@
 def _SLASH_FA : CLFlag<"FA">,
   HelpText<"Output assembly code file during compilation">;
 def _SLASH_Fa : CLJoined<"Fa">,
-  HelpText<"Output assembly code to this file during compilation">,
+  HelpText<"Output assembly code to this file during compilation (with /FA)">,
   MetaVarName<"<file or directory>">;
 def _SLASH_fallback : CLCompileFlag<"fallback">,
   HelpText<"Fall back to cl.exe if clang-cl fails to compile">;
@@ -198,10 +198,10 @@
   HelpText<"Set output executable file or directory (ends in / or \\)">,
   MetaVarName<"<file or directory>">;
 def _SLASH_Fi : CLCompileJoined<"Fi">,
-  HelpText<"Set preprocess output file name">,
+  HelpText<"Set preprocess output file name (with /P)">,
   MetaVarName<"<file>">;
 def _SLASH_Fo : CLCompileJoined<"Fo">,
-  HelpText<"Set output object file, or directory (ends in / or \\)">,
+  HelpText<"Set output object file, or directory (ends in / or \\) (with /c)">,
   MetaVarName<"<file or directory>">;
 def _SLASH_LD : CLFlag<"LD">, HelpText<"Create DLL">;
 def _SLASH_LDd : CLFlag<"LDd">, HelpText<"Create debug DLL">;

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