From 9b533164570a67c81ad49f3691f02608530a042e Mon Sep 17 00:00:00 2001
From: Chris Lattner <sabre@nondot.org>
Date: Sun, 5 Oct 2008 19:44:25 +0000
Subject: [PATCH] eliminate __USER_LABEL_PREFIX__ from the Targets.cpp file,
 start moving integer size #defines over to the Preprocessor.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@57130 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/Basic/Targets.cpp    | 18 ++----------------
 lib/Lex/Preprocessor.cpp | 29 +++++++++++++++++++++++------
 2 files changed, 25 insertions(+), 22 deletions(-)

diff --git a/lib/Basic/Targets.cpp b/lib/Basic/Targets.cpp
index 4d3c6b3602..7aad3e8654 100644
--- a/lib/Basic/Targets.cpp
+++ b/lib/Basic/Targets.cpp
@@ -129,14 +129,9 @@ static void getPowerPCDefines(std::vector<char> &Defs, bool is64Bit) {
     Define(Defs, "__UINTMAX_TYPE__", "long long unsigned int");
   }
   Define(Defs, "__INT_MAX__", "2147483647");
-  Define(Defs, "__LONG_LONG_MAX__", "9223372036854775807LL");
-  Define(Defs, "__CHAR_BIT__", "8");
-  Define(Defs, "__SCHAR_MAX__", "127");
-  Define(Defs, "__SHRT_MAX__", "32767");
   Define(Defs, "__SIZE_TYPE__", "long unsigned int");
   
   // Subtarget options.
-  Define(Defs, "__USER_LABEL_PREFIX__", "_");
   Define(Defs, "__NATURAL_ALIGNMENT__");
   Define(Defs, "__REGISTER_PREFIX__", "");
 
@@ -229,11 +224,7 @@ static void getX86Defines(std::vector<char> &Defs, bool is64Bit) {
     Define(Defs, "__UINTMAX_TYPE__", "long long unsigned int");
   }
   Define(Defs, "__SIZE_TYPE__", "long unsigned int");
-  Define(Defs, "__CHAR_BIT__", "8");
   Define(Defs, "__INT_MAX__", "2147483647");
-  Define(Defs, "__LONG_LONG_MAX__", "9223372036854775807LL");
-  Define(Defs, "__SCHAR_MAX__", "127");
-  Define(Defs, "__SHRT_MAX__", "32767");
   
   // Subtarget options.
   Define(Defs, "__nocona");
@@ -313,11 +304,7 @@ static void getARMDefines(std::vector<char> &Defs) {
   Define(Defs, "__UINTMAX_TYPE__", "long long unsigned int");
   Define(Defs, "__SIZE_TYPE__", "long unsigned int");
   
-  Define(Defs, "__CHAR_BIT__", "8");
   Define(Defs, "__INT_MAX__", "2147483647");
-  Define(Defs, "__LONG_LONG_MAX__", "9223372036854775807LL");
-  Define(Defs, "__SCHAR_MAX__", "127");
-  Define(Defs, "__SHRT_MAX__", "32767");
   
   // Subtarget options.  [hard coded to v6 for now]
   Define(Defs, "__ARM_ARCH_6K__");
@@ -719,11 +706,11 @@ namespace {
 class LinuxX86_32TargetInfo : public X86_32TargetInfo {
 public:
   LinuxX86_32TargetInfo(const std::string& triple) : X86_32TargetInfo(triple) {
+    UserLabelPrefix = "";
   }
   virtual void getTargetDefines(std::vector<char> &Defines) const {
     X86_32TargetInfo::getTargetDefines(Defines);
     getLinuxDefines(Defines);
-    Define(Defines, "__USER_LABEL_PREFIX__", "");
   }
 };
 } // end anonymous namespace
@@ -750,7 +737,6 @@ public:
     Define(Defines, "WINNT");
     Define(Defines, "_X86_");
     Define(Defines, "__MSVCRT__");
-    Define(Defines, "__USER_LABEL_PREFIX__", "_");
   }
 };
 } // end anonymous namespace
@@ -786,11 +772,11 @@ namespace {
 class LinuxX86_64TargetInfo : public X86_64TargetInfo {
 public:
   LinuxX86_64TargetInfo(const std::string& triple) : X86_64TargetInfo(triple) {
+    UserLabelPrefix = "";
   }
   virtual void getTargetDefines(std::vector<char> &Defines) const {
     X86_64TargetInfo::getTargetDefines(Defines);
     getLinuxDefines(Defines);
-    Define(Defines, "__USER_LABEL_PREFIX__", "");
   }
 };
 } // end anonymous namespace
diff --git a/lib/Lex/Preprocessor.cpp b/lib/Lex/Preprocessor.cpp
index c97cda3bcd..5d1f119c8c 100644
--- a/lib/Lex/Preprocessor.cpp
+++ b/lib/Lex/Preprocessor.cpp
@@ -427,6 +427,7 @@ static void InitializePredefinedMacros(Preprocessor &PP,
     // on other things like the runtime I believe.
     DefineBuiltinMacro(Buf, "__CONSTANT_CFSTRINGS__=1");
   }
+  
   if (PP.getLangOptions().ObjC2)
     DefineBuiltinMacro(Buf, "OBJC_NEW_PROPERTIES");
 
@@ -465,29 +466,45 @@ static void InitializePredefinedMacros(Preprocessor &PP,
   
   
   // Initialize target-specific preprocessor defines.
+  const TargetInfo &TI = PP.getTargetInfo();
+  
+  // Define type sizing macros based on the target properties.
+  assert(TI.getCharWidth() == 8 && "Only support 8-bit char so far");
+  DefineBuiltinMacro(Buf, "__CHAR_BIT__=8");
+  DefineBuiltinMacro(Buf, "__SCHAR_MAX__=127");
+  
+  assert(TI.getShortWidth() == 16 && "Only support 16-bit short so far");
+  DefineBuiltinMacro(Buf, "__CHAR_BIT__=8");
+  DefineBuiltinMacro(Buf, "__SHRT_MAX__=32767");
+  
+  
+  assert(TI.getLongLongWidth() == 64 && "Only support 64-bit long long so far");
+  DefineBuiltinMacro(Buf, "__LONG_LONG_MAX__=9223372036854775807LL");
+
   
   // Add __builtin_va_list typedef.
   {
-    const char *VAList = PP.getTargetInfo().getVAListDeclaration();
+    const char *VAList = TI.getVAListDeclaration();
     Buf.insert(Buf.end(), VAList, VAList+strlen(VAList));
     Buf.push_back('\n');
   }
   
-  if (const char *Prefix = PP.getTargetInfo().getUserLabelPrefix()) {
+  if (const char *Prefix = TI.getUserLabelPrefix()) {
     llvm::SmallString<20> TmpStr;
     TmpStr += "__USER_LABEL_PREFIX__=";
     TmpStr += Prefix;
     DefineBuiltinMacro(Buf, TmpStr.c_str());
   }
   
-  // Get the target #defines.
-  PP.getTargetInfo().getTargetDefines(Buf);
-
-  // Build configuration options.
+  // Build configuration options.  FIXME: these should be controlled by
+  // command line options or something.
   DefineBuiltinMacro(Buf, "__DYNAMIC__=1");
   DefineBuiltinMacro(Buf, "__FINITE_MATH_ONLY__=0");
   DefineBuiltinMacro(Buf, "__NO_INLINE__=1");
   DefineBuiltinMacro(Buf, "__PIC__=1");
+
+  // Get other target #defines.
+  TI.getTargetDefines(Buf);
   
   // FIXME: Should emit a #line directive here.
 }
-- 
2.40.0