From 92b8da75a1bed2f70079e970883b4e69e99d2330 Mon Sep 17 00:00:00 2001
From: Mikhail Glushenkov <foldr@codedgers.com>
Date: Fri, 30 May 2008 06:24:07 +0000
Subject: [PATCH] Make it possible to test if the '-o' option is provided.

The following is now allowed:

    (case (not_empty "o"), do_something, ...)

This didn't work previously because "-o" is built-in.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51751 91177308-0d34-0410-b5e6-96231b3b80d8
---
 tools/llvmc2/AutoGenerated.cpp               |  2 ++
 utils/TableGen/LLVMCConfigurationEmitter.cpp | 16 +++++++++++-----
 2 files changed, 13 insertions(+), 5 deletions(-)

diff --git a/tools/llvmc2/AutoGenerated.cpp b/tools/llvmc2/AutoGenerated.cpp
index 213db01e0bc..30aeb8f75ea 100644
--- a/tools/llvmc2/AutoGenerated.cpp
+++ b/tools/llvmc2/AutoGenerated.cpp
@@ -29,5 +29,7 @@ namespace llvmc {
   extern const std::string& GetLanguage(const sys::Path& File);
 }
 
+extern cl::opt<std::string> OutputFilename;
+
 // The auto-generated file
 #include "AutoGenerated.inc"
diff --git a/utils/TableGen/LLVMCConfigurationEmitter.cpp b/utils/TableGen/LLVMCConfigurationEmitter.cpp
index 45f6a13d230..9be9cfc98b0 100644
--- a/utils/TableGen/LLVMCConfigurationEmitter.cpp
+++ b/utils/TableGen/LLVMCConfigurationEmitter.cpp
@@ -691,11 +691,17 @@ bool EmitCaseTest1Arg(const std::string& TestName,
     O << "GetLanguage(inFile) == \"" << OptName << '\"';
     return true;
   } else if (TestName == "not_empty") {
-    const GlobalOptionDescription& OptDesc = OptDescs.FindOption(OptName);
-    if (OptDesc.Type == OptionType::Switch)
-      throw OptName + ": incorrect option type!";
-    O << '!' << OptDesc.GenVariableName() << ".empty()";
-    return true;
+    if (OptName == "o") {
+      O << "!OutputFilename.empty()";
+      return true;
+    }
+    else {
+      const GlobalOptionDescription& OptDesc = OptDescs.FindOption(OptName);
+      if (OptDesc.Type == OptionType::Switch)
+        throw OptName + ": incorrect option type!";
+      O << '!' << OptDesc.GenVariableName() << ".empty()";
+      return true;
+    }
   }
 
   return false;