Normalize SourceMgr messages.
 - Don't print "Parsing" in front of every message.

 - Take additional "type" argument which is prepended to the message (with ": ")
   if given.

 - Update clients to print errors (warnings) as:
<filename>:<line number>: error(warning): ...


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@74489 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/tools/llvm-mc/AsmLexer.cpp b/tools/llvm-mc/AsmLexer.cpp
index 931f3b2..7b744fb 100644
--- a/tools/llvm-mc/AsmLexer.cpp
+++ b/tools/llvm-mc/AsmLexer.cpp
@@ -42,14 +42,15 @@
   return SMLoc::getFromPointer(TokStart);
 }
 
-void AsmLexer::PrintMessage(SMLoc Loc, const std::string &Msg) const {
-  SrcMgr.PrintMessage(Loc, Msg);
+void AsmLexer::PrintMessage(SMLoc Loc, const std::string &Msg, 
+                            const char *Type) const {
+  SrcMgr.PrintMessage(Loc, Msg, Type);
 }
 
 /// ReturnError - Set the error to the specified string at the specified
 /// location.  This is defined to always return asmtok::Error.
 asmtok::TokKind AsmLexer::ReturnError(const char *Loc, const std::string &Msg) {
-  SrcMgr.PrintMessage(SMLoc::getFromPointer(Loc), Msg);
+  SrcMgr.PrintMessage(SMLoc::getFromPointer(Loc), Msg, "error");
   return asmtok::Error;
 }
 
diff --git a/tools/llvm-mc/AsmLexer.h b/tools/llvm-mc/AsmLexer.h
index 5d0002d..6360b12 100644
--- a/tools/llvm-mc/AsmLexer.h
+++ b/tools/llvm-mc/AsmLexer.h
@@ -97,7 +97,7 @@
   
   SMLoc getLoc() const;
   
-  void PrintMessage(SMLoc Loc, const std::string &Msg) const;
+  void PrintMessage(SMLoc Loc, const std::string &Msg, const char *Type) const;
   
 private:
   int getNextChar();
diff --git a/tools/llvm-mc/AsmParser.cpp b/tools/llvm-mc/AsmParser.cpp
index 9a71139..9414f99 100644
--- a/tools/llvm-mc/AsmParser.cpp
+++ b/tools/llvm-mc/AsmParser.cpp
@@ -22,13 +22,17 @@
 #include "llvm/Support/raw_ostream.h"
 using namespace llvm;
 
+void AsmParser::Warning(SMLoc L, const char *Msg) {
+  Lexer.PrintMessage(L, Msg, "warning");
+}
+
 bool AsmParser::Error(SMLoc L, const char *Msg) {
-  Lexer.PrintMessage(L, Msg);
+  Lexer.PrintMessage(L, Msg, "error");
   return true;
 }
 
 bool AsmParser::TokError(const char *Msg) {
-  Lexer.PrintMessage(Lexer.getLoc(), Msg);
+  Lexer.PrintMessage(Lexer.getLoc(), Msg, "error");
   return true;
 }
 
@@ -482,7 +486,7 @@
     if (!strcmp(IDVal, ".weak_reference"))
       return ParseDirectiveSymbolAttribute(MCStreamer::WeakReference);
 
-    Lexer.PrintMessage(IDLoc, "warning: ignoring directive for now");
+    Warning(IDLoc, "ignoring directive for now");
     EatToEndOfStatement();
     return false;
   }
@@ -810,14 +814,14 @@
   // Diagnose non-sensical max bytes to fill.
   if (MaxBytesLoc.isValid()) {
     if (MaxBytesToFill < 1) {
-      Lexer.PrintMessage(MaxBytesLoc, "warning: alignment directive can never "
-                         "be satisfied in this many bytes, ignoring");
+      Warning(MaxBytesLoc, "alignment directive can never be satisfied in this "
+              "many bytes, ignoring");
       return false;
     }
 
     if (MaxBytesToFill >= Alignment) {
-      Lexer.PrintMessage(MaxBytesLoc, "warning: maximum bytes expression "
-                         "exceeds alignment and has no effect");
+      Warning(MaxBytesLoc, "maximum bytes expression exceeds alignment and "
+              "has no effect");
       MaxBytesToFill = 0;
     }
   }
diff --git a/tools/llvm-mc/AsmParser.h b/tools/llvm-mc/AsmParser.h
index f5e372c..8cd40eb 100644
--- a/tools/llvm-mc/AsmParser.h
+++ b/tools/llvm-mc/AsmParser.h
@@ -39,7 +39,8 @@
   
 private:
   bool ParseStatement();
-  
+
+  void Warning(SMLoc L, const char *Msg);
   bool Error(SMLoc L, const char *Msg);
   bool TokError(const char *Msg);
   
diff --git a/tools/llvm-mc/llvm-mc.cpp b/tools/llvm-mc/llvm-mc.cpp
index 4100cb1..e26d79d 100644
--- a/tools/llvm-mc/llvm-mc.cpp
+++ b/tools/llvm-mc/llvm-mc.cpp
@@ -80,7 +80,7 @@
   while (Tok != asmtok::Eof) {
     switch (Tok) {
     default:
-      Lexer.PrintMessage(Lexer.getLoc(), "driver: unknown token");
+      Lexer.PrintMessage(Lexer.getLoc(), "unknown token", "warning");
       Error = true;
       break;
     case asmtok::Error: