For fastcc on x86, let ECX be used as a return register after EAX and EDX

[oota-llvm.git] / lib / Support / Debug.cpp

diff --git a/lib/Support/Debug.cpp b/lib/Support/Debug.cpp
index 6e67ed8f6733c175442e4766921b100ef6fc9dd0..50abe0164ac237297b7edd395ac6050ccca8f6c1 100644 (file)
--- a/lib/Support/Debug.cpp
+++ b/lib/Support/Debug.cpp
@@ -2,8 +2,8 @@
 //
 //                     The LLVM Compiler Infrastructure
 //
-// This file was developed by the LLVM research group and is distributed under
-// the University of Illinois Open Source License. See LICENSE.TXT for details.
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
 //
@@ -27,50 +27,48 @@
 #include "llvm/Support/Debug.h"
 using namespace llvm;
 
+// All Debug.h functionality is a no-op in NDEBUG mode.
+#ifndef NDEBUG
 bool llvm::DebugFlag;  // DebugFlag - Exported boolean set by the -debug option
 
-namespace {
-#ifndef NDEBUG
-  // -debug - Command line option to enable the DEBUG statements in the passes.
-  // This flag may only be enabled in debug builds.
-  cl::opt<bool, true>
-  Debug("debug", cl::desc("Enable debug output"), cl::Hidden,
-        cl::location(DebugFlag));
+// -debug - Command line option to enable the DEBUG statements in the passes.
+// This flag may only be enabled in debug builds.
+static cl::opt<bool, true>
+Debug("debug", cl::desc("Enable debug output"), cl::Hidden,
+      cl::location(DebugFlag));
 
-  std::string CurrentDebugType;
-  struct DebugOnlyOpt {
-    void operator=(const std::string &Val) const {
-      DebugFlag |= !Val.empty();
-      CurrentDebugType = Val;
-    }
-  } DebugOnlyOptLoc;
+static std::string CurrentDebugType;
+static struct DebugOnlyOpt {
+  void operator=(const std::string &Val) const {
+    DebugFlag |= !Val.empty();
+    CurrentDebugType = Val;
+  }
+} DebugOnlyOptLoc;
 
-  cl::opt<DebugOnlyOpt, true, cl::parser<std::string> >
-  DebugOnly("debug-only", cl::desc("Enable a specific type of debug output"),
-            cl::Hidden, cl::value_desc("debug string"),
-            cl::location(DebugOnlyOptLoc), cl::ValueRequired);
-#endif
-}
+static cl::opt<DebugOnlyOpt, true, cl::parser<std::string> >
+DebugOnly("debug-only", cl::desc("Enable a specific type of debug output"),
+          cl::Hidden, cl::value_desc("debug string"),
+          cl::location(DebugOnlyOptLoc), cl::ValueRequired);
 
 // isCurrentDebugType - Return true if the specified string is the debug type
 // specified on the command line, or if none was specified on the command line
 // with the -debug-only=X option.
 //
 bool llvm::isCurrentDebugType(const char *DebugType) {
-#ifndef NDEBUG
   return CurrentDebugType.empty() || DebugType == CurrentDebugType;
-#else
-  return false;
-#endif
 }
 
-// getErrorOutputStream - Returns the error output stream (std::cerr). This
-// places the std::c* I/O streams into one .cpp file and relieves the whole
-// program from having to have hundreds of static c'tor/d'tors for them.
-// 
-OStream &llvm::getErrorOutputStream(const char *DebugType) {
-  if (DebugFlag && isCurrentDebugType(DebugType))
-    return cerr;
-  else
-    return cnull;
+/// SetCurrentDebugType - Set the current debug type, as if the -debug-only=X
+/// option were specified.  Note that DebugFlag also needs to be set to true for
+/// debug output to be produced.
+///
+void llvm::SetCurrentDebugType(const char *Type) {
+  CurrentDebugType = Type;
 }
+
+#else
+// Avoid "has no symbols" warning.
+namespace llvm {
+int Debug_dummy = 0;
+}
+#endif