Reverting r266199; it causes build bot failures.

http://lab.llvm.org:8011/builders/clang-s390x-linux/builds/3255
http://lab.llvm.org:8011/builders/clang-ppc64be-linux/builds/3517  

llvm-svn: 266201

2 files changed, 2 insertions, 24 deletions

diff --git a/clang/include/clang/Basic/Builtins.def b/clang/include/clang/Basic/Builtins.def
index 53e77cf35bf..7a440cc7082 100644
--- a/clang/include/clang/Basic/Builtins.def
+++ b/clang/include/clang/Basic/Builtins.def
@@ -67,7 +67,6 @@
 // Builtin::Context class.  Currently we have:
 //  n -> nothrow
 //  r -> noreturn
-//  U -> pure
 //  c -> const
 //  t -> signature is meaningless, use custom typechecking
 //  F -> this is a libc/libm function with a '__builtin_' prefix added.
@@ -774,22 +773,6 @@ LIBBUILTIN(sscanf, "icC*RcC*R.",  "fs:1:", "stdio.h", ALL_LANGUAGES)
 LIBBUILTIN(vscanf, "icC*Ra",      "fS:0:", "stdio.h", ALL_LANGUAGES)
 LIBBUILTIN(vfscanf, "iP*RcC*Ra",  "fS:1:", "stdio.h", ALL_LANGUAGES)
 LIBBUILTIN(vsscanf, "icC*RcC*Ra", "fS:1:", "stdio.h", ALL_LANGUAGES)
-// C99 ctype.h
-LIBBUILTIN(isalnum, "ii", "fnU", "ctype.h", ALL_LANGUAGES)
-LIBBUILTIN(isalpha, "ii", "fnU", "ctype.h", ALL_LANGUAGES)
-LIBBUILTIN(isblank, "ii", "fnU", "ctype.h", ALL_LANGUAGES)
-LIBBUILTIN(iscntrl, "ii", "fnU", "ctype.h", ALL_LANGUAGES)
-LIBBUILTIN(isdigit, "ii", "fnU", "ctype.h", ALL_LANGUAGES)
-LIBBUILTIN(isgraph, "ii", "fnU", "ctype.h", ALL_LANGUAGES)
-LIBBUILTIN(islower, "ii", "fnU", "ctype.h", ALL_LANGUAGES)
-LIBBUILTIN(isprint, "ii", "fnU", "ctype.h", ALL_LANGUAGES)
-LIBBUILTIN(ispunct, "ii", "fnU", "ctype.h", ALL_LANGUAGES)
-LIBBUILTIN(isspace, "ii", "fnU", "ctype.h", ALL_LANGUAGES)
-LIBBUILTIN(isupper, "ii", "fnU", "ctype.h", ALL_LANGUAGES)
-LIBBUILTIN(isxdigit, "ii", "fnU", "ctype.h", ALL_LANGUAGES)
-LIBBUILTIN(tolower, "ii", "fnU", "ctype.h", ALL_LANGUAGES)
-LIBBUILTIN(toupper, "ii", "fnU", "ctype.h", ALL_LANGUAGES)
-
 // C99
 // In some systems setjmp is a macro that expands to _setjmp. We undefine
 // it here to avoid having two identical LIBBUILTIN entries.
diff --git a/clang/include/clang/Basic/Builtins.h b/clang/include/clang/Basic/Builtins.h
index 8938e191bb4..5917843f294 100644
--- a/clang/include/clang/Basic/Builtins.h
+++ b/clang/include/clang/Basic/Builtins.h
@@ -89,16 +89,11 @@ public:
     return getRecord(ID).Type;
   }
 
-  /// \brief Return true if this function is a target-specific builtin.
+  /// \brief Return true if this function is a target-specific builtin
   bool isTSBuiltin(unsigned ID) const {
     return ID >= Builtin::FirstTSBuiltin;
   }
 
-  /// \brief Return true if this function has no side effects.
-  bool isPure(unsigned ID) const {
-    return strchr(getRecord(ID).Attributes, 'U') != nullptr;
-  }
-
   /// \brief Return true if this function has no side effects and doesn't
   /// read memory.
   bool isConst(unsigned ID) const {
@@ -160,7 +155,7 @@ public:
   /// \brief Completely forget that the given ID was ever considered a builtin,
   /// e.g., because the user provided a conflicting signature.
   void forgetBuiltin(unsigned ID, IdentifierTable &Table);
-
+  
   /// \brief If this is a library function that comes from a specific
   /// header, retrieve that header name.
   const char *getHeaderName(unsigned ID) const {