[cfe-commits] r57127 - in /cfe/trunk: include/clang/Basic/TargetInfo.h lib/Basic/TargetInfo.cpp lib/Lex/Preprocessor.cpp

[Chris Lattner]

Author: lattner
Date: Sun Oct  5 14:22:37 2008
New Revision: 57127

URL: http://llvm.org/viewvc/llvm-project?rev=57127&view=rev
Log:
Implement PR2773, support for __USER_LABEL_PREFIX__

Modified:
    cfe/trunk/include/clang/Basic/TargetInfo.h
    cfe/trunk/lib/Basic/TargetInfo.cpp
    cfe/trunk/lib/Lex/Preprocessor.cpp

Modified: cfe/trunk/include/clang/Basic/TargetInfo.h
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/include/clang/Basic/TargetInfo.h?rev=57127&r1=57126&r2=57127&view=diff

==============================================================================
--- cfe/trunk/include/clang/Basic/TargetInfo.h (original)
+++ cfe/trunk/include/clang/Basic/TargetInfo.h Sun Oct  5 14:22:37 2008
@@ -44,7 +44,7 @@
   unsigned char LongWidth, LongAlign;
   unsigned char LongLongWidth, LongLongAlign;
   const char *DescriptionString;
-  
+  const char *UserLabelPrefix;
   const llvm::fltSemantics *FloatFormat, *DoubleFormat, *LongDoubleFormat;
 
   // TargetInfo Constructor.  Default initializes all fields.
@@ -141,6 +141,14 @@
     return 64;
   }
   
+  /// getUserLabelPrefix - This returns the default value of the
+  /// __USER_LABEL_PREFIX__ macro, which is the prefix given to user symbols by
+  /// default.  On most platforms this is "_", but it is "" on some, and "." on
+  /// others.
+  const char *getUserLabelPrefix() const {
+    return UserLabelPrefix;
+  }
+  
   ///===---- Other target property query methods --------------------------===//
   
   /// getTargetDefines - Appends the target-specific #define values for this

Modified: cfe/trunk/lib/Basic/TargetInfo.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Basic/TargetInfo.cpp?rev=57127&r1=57126&r2=57127&view=diff

==============================================================================
--- cfe/trunk/lib/Basic/TargetInfo.cpp (original)
+++ cfe/trunk/lib/Basic/TargetInfo.cpp Sun Oct  5 14:22:37 2008
@@ -39,6 +39,7 @@
   LongDoubleFormat = &llvm::APFloat::IEEEdouble;
   DescriptionString = "E-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-"
                       "i64:64:64-f32:32:32-f64:64:64";
+  UserLabelPrefix = "_";
 }
 
 // Out of line virtual dtor for TargetInfo.

Modified: cfe/trunk/lib/Lex/Preprocessor.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Lex/Preprocessor.cpp?rev=57127&r1=57126&r2=57127&view=diff

==============================================================================
--- cfe/trunk/lib/Lex/Preprocessor.cpp (original)
+++ cfe/trunk/lib/Lex/Preprocessor.cpp Sun Oct  5 14:22:37 2008
@@ -425,6 +425,13 @@
     Buf.push_back('\n');
   }
   
+  if (const char *Prefix = PP.getTargetInfo().getUserLabelPrefix()) {
+    llvm::SmallString<20> TmpStr;
+    TmpStr += "__USER_LABEL_PREFIX__=";
+    TmpStr += Prefix;
+    DefineBuiltinMacro(Buf, TmpStr.c_str());
+  }
+  
   // Get the target #defines.
   PP.getTargetInfo().getTargetDefines(Buf);