From b304f77cb621a47221f2aa2d35acdb5c730421ff Mon Sep 17 00:00:00 2001
From: Chris Lattner <sabre@nondot.org>
Date: Wed, 21 Oct 2009 06:24:21 +0000
Subject: [PATCH] add helpful methods to TargetInfo for querying builtin
 integer type properties, patch by Ken Dyck!

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@84746 91177308-0d34-0410-b5e6-96231b3b80d8
---
 include/clang/Basic/TargetInfo.h | 14 +++++++++
 lib/Basic/TargetInfo.cpp         | 51 ++++++++++++++++++++++++++++++++
 2 files changed, 65 insertions(+)

diff --git a/include/clang/Basic/TargetInfo.h b/include/clang/Basic/TargetInfo.h
index 5f0230bc4c..b88e2aaba3 100644
--- a/include/clang/Basic/TargetInfo.h
+++ b/include/clang/Basic/TargetInfo.h
@@ -98,6 +98,15 @@ public:
   IntType getChar32Type() const { return Char32Type; }
   IntType getInt64Type() const { return Int64Type; }
 
+
+  /// getTypeWidth - Return the width (in bits) of the specified integer type 
+  /// enum. For example, SignedInt -> getIntWidth().
+  unsigned getTypeWidth(IntType T) const;
+
+  /// getTypeSigned - Return whether an integer types is signed. Returns true if
+  /// the type is signed; false otherwise.
+  bool getTypeSigned(IntType T) const;
+
   /// getPointerWidth - Return the width of pointers on this target, for the
   /// specified address space.
   uint64_t getPointerWidth(unsigned AddrSpace) const {
@@ -186,6 +195,10 @@ public:
   /// For example, SignedShort -> "short".
   static const char *getTypeName(IntType T);
 
+  /// getTypeConstantSuffix - Return the constant suffix for the specified
+  /// integer type enum. For example, SignedLong -> "L".
+  static const char *getTypeConstantSuffix(IntType T);
+
   ///===---- Other target property query methods --------------------------===//
 
   /// getTargetDefines - Appends the target-specific #define values for this
@@ -193,6 +206,7 @@ public:
   virtual void getTargetDefines(const LangOptions &Opts,
                                 std::vector<char> &DefineBuffer) const = 0;
 
+
   /// getTargetBuiltins - Return information about target-specific builtins for
   /// the current primary target, and info about which builtins are non-portable
   /// across the current set of primary and secondary targets.
diff --git a/lib/Basic/TargetInfo.cpp b/lib/Basic/TargetInfo.cpp
index f9e789c36d..8f3c777c20 100644
--- a/lib/Basic/TargetInfo.cpp
+++ b/lib/Basic/TargetInfo.cpp
@@ -74,6 +74,57 @@ const char *TargetInfo::getTypeName(IntType T) {
   }
 }
 
+/// getTypeConstantSuffix - Return the constant suffix for the specified
+/// integer type enum. For example, SignedLong -> "L".
+const char *TargetInfo::getTypeConstantSuffix(IntType T) {
+  switch (T) {
+  default: assert(0 && "not an integer!");
+  case SignedShort:
+  case SignedInt:        return "";
+  case SignedLong:       return "L";
+  case SignedLongLong:   return "LL";
+  case UnsignedShort:
+  case UnsignedInt:      return "U";
+  case UnsignedLong:     return "UL";
+  case UnsignedLongLong: return "ULL";
+  }
+}
+
+/// getTypeWidth - Return the width (in bits) of the specified integer type 
+/// enum. For example, SignedInt -> getIntWidth().
+unsigned TargetInfo::getTypeWidth(IntType T) const {
+  switch (T) {
+  default: assert(0 && "not an integer!");
+  case SignedShort:      return getShortWidth();
+  case UnsignedShort:    return getShortWidth();
+  case SignedInt:        return getIntWidth();
+  case UnsignedInt:      return getIntWidth();
+  case SignedLong:       return getLongWidth();
+  case UnsignedLong:     return getLongWidth();
+  case SignedLongLong:   return getLongLongWidth();
+  case UnsignedLongLong: return getLongLongWidth();
+  };
+}
+
+/// getTypeSigned - Return whether an integer types is signed. Returns true if
+/// the type is signed; false otherwise.
+bool TargetInfo::getTypeSigned(IntType T) const {
+  switch (T) {
+  default: assert(0 && "not an integer!");
+  case SignedShort:
+  case SignedInt:
+  case SignedLong:
+  case SignedLongLong:   
+    return true;
+  case UnsignedShort:
+  case UnsignedInt:
+  case UnsignedLong:
+  case UnsignedLongLong: 
+    return false;
+  };
+}
+
+
 //===----------------------------------------------------------------------===//
 
 
-- 
2.50.1