diff --git a/include/llvm/Target/TargetAsmInfo.h b/include/llvm/Target/TargetAsmInfo.h
index ff2491e..bbb5852 100644
--- a/include/llvm/Target/TargetAsmInfo.h
+++ b/include/llvm/Target/TargetAsmInfo.h
@@ -216,10 +216,15 @@
     const char *GlobalPrefix;             // Defaults to ""
 
     /// PrivateGlobalPrefix - This prefix is used for globals like constant
-    /// pool entries that are completely private to the .o file and should not
+    /// pool entries that are completely private to the .s file and should not
     /// have names in the .o file.  This is often "." or "L".
     const char *PrivateGlobalPrefix;      // Defaults to "."
     
+    /// LessPrivateGlobalPrefix - This prefix is used for some Objective C
+    /// metadata symbols that should be passed through the assembler but be
+    /// removed by the linker.  This is "l" on Darwin.
+    const char *LessPrivateGlobalPrefix;      // Defaults to ""
+    
     /// JumpTableSpecialLabelPrefix - If not null, a extra (dead) label is
     /// emitted before jump tables with the specified prefix.
     const char *JumpTableSpecialLabelPrefix;  // Default to null.
@@ -653,6 +658,9 @@
     const char *getPrivateGlobalPrefix() const {
       return PrivateGlobalPrefix;
     }
+    const char *getLessPrivateGlobalPrefix() const {
+      return LessPrivateGlobalPrefix;
+    }
     const char *getJumpTableSpecialLabelPrefix() const {
       return JumpTableSpecialLabelPrefix;
     }
diff --git a/lib/CodeGen/AsmPrinter/AsmPrinter.cpp b/lib/CodeGen/AsmPrinter/AsmPrinter.cpp
index 273253a..f041f3b 100644
--- a/lib/CodeGen/AsmPrinter/AsmPrinter.cpp
+++ b/lib/CodeGen/AsmPrinter/AsmPrinter.cpp
@@ -452,7 +452,9 @@
 
 /// EmitLLVMUsedList - For targets that define a TAI::UsedDirective, mark each
 /// global in the specified llvm.used list as being used with this directive.
-/// Non-globals (i.e. internal linkage) should not be emitted.
+/// Internally linked data beginning with the PrivateGlobalPrefix or the
+/// LessPrivateGlobalPrefix does not have the directive emitted (this 
+/// occurs in ObjC metadata).
 void AsmPrinter::EmitLLVMUsedList(Constant *List) {
   const char *Directive = TAI->getUsedDirective();
 
@@ -462,7 +464,17 @@
   
   for (unsigned i = 0, e = InitList->getNumOperands(); i != e; ++i) {
     const GlobalValue *GV = findGlobalValue(InitList->getOperand(i));
-    if (GV && (!GV->hasInternalLinkage() || isa<Function>(GV))) {
+    if (GV) {
+      if (GV->hasInternalLinkage() && !isa<Function>(GV) &&
+          ((strlen(TAI->getPrivateGlobalPrefix()) != 0 &&
+            Mang->getValueName(GV)
+              .substr(0,strlen(TAI->getPrivateGlobalPrefix())) ==
+              TAI->getPrivateGlobalPrefix()) ||
+           (strlen(TAI->getLessPrivateGlobalPrefix()) != 0 &&
+            Mang->getValueName(GV)
+              .substr(0,strlen(TAI->getLessPrivateGlobalPrefix())) ==
+              TAI->getLessPrivateGlobalPrefix())))
+        continue;
       O << Directive;
       EmitConstantValueOnly(InitList->getOperand(i));
       O << '\n';
diff --git a/lib/Target/ARM/ARMTargetAsmInfo.cpp b/lib/Target/ARM/ARMTargetAsmInfo.cpp
index 3e05735..a1a00a2 100644
--- a/lib/Target/ARM/ARMTargetAsmInfo.cpp
+++ b/lib/Target/ARM/ARMTargetAsmInfo.cpp
@@ -62,6 +62,7 @@
 
   GlobalPrefix = "_";
   PrivateGlobalPrefix = "L";
+  LessPrivateGlobalPrefix = "l";
   StringConstantPrefix = "\1LC";
   BSSSection = 0;                       // no BSS section
   ZeroDirective = "\t.space\t";
diff --git a/lib/Target/PowerPC/PPCTargetAsmInfo.cpp b/lib/Target/PowerPC/PPCTargetAsmInfo.cpp
index 1b8c1a5..fc98e57 100644
--- a/lib/Target/PowerPC/PPCTargetAsmInfo.cpp
+++ b/lib/Target/PowerPC/PPCTargetAsmInfo.cpp
@@ -38,6 +38,7 @@
   CommentString = ";";
   GlobalPrefix = "_";
   PrivateGlobalPrefix = "L";
+  LessPrivateGlobalPrefix = "l";
   StringConstantPrefix = "\1LC";
   ConstantPoolSection = "\t.const\t";
   JumpTableDataSection = ".const";
diff --git a/lib/Target/TargetAsmInfo.cpp b/lib/Target/TargetAsmInfo.cpp
index 6baebd0..06b77dd 100644
--- a/lib/Target/TargetAsmInfo.cpp
+++ b/lib/Target/TargetAsmInfo.cpp
@@ -50,6 +50,7 @@
   CommentString("#"),
   GlobalPrefix(""),
   PrivateGlobalPrefix("."),
+  LessPrivateGlobalPrefix(""),
   JumpTableSpecialLabelPrefix(0),
   GlobalVarAddrPrefix(""),
   GlobalVarAddrSuffix(""),
diff --git a/lib/Target/X86/X86TargetAsmInfo.cpp b/lib/Target/X86/X86TargetAsmInfo.cpp
index be390c2..64858f8 100644
--- a/lib/Target/X86/X86TargetAsmInfo.cpp
+++ b/lib/Target/X86/X86TargetAsmInfo.cpp
@@ -136,6 +136,7 @@
     Data64bitsDirective = 0;       // we can't emit a 64-bit unit
   ZeroDirective = "\t.space\t";  // ".space N" emits N zeros.
   PrivateGlobalPrefix = "L";     // Marker for constant pool idxs
+  LessPrivateGlobalPrefix = "l";  // Marker for some ObjC metadata
   BSSSection = 0;                       // no BSS section.
   ZeroFillDirective = "\t.zerofill\t";  // Uses .zerofill
   if (DTM->getRelocationModel() != Reloc::Static)