diff --git a/llvm/docs/BitCodeFormat.rst b/llvm/docs/BitCodeFormat.rst
--- a/llvm/docs/BitCodeFormat.rst
+++ b/llvm/docs/BitCodeFormat.rst
@@ -667,16 +667,6 @@
 can be referenced by the 1-based index in the *section* fields of ``GLOBALVAR``
 or ``FUNCTION`` records.
 
-MODULE_CODE_DEPLIB Record
-^^^^^^^^^^^^^^^^^^^^^^^^^
-
-``[DEPLIB, ...string...]``
-
-The ``DEPLIB`` record (code 6) contains a variable number of values representing
-the bytes of a single dependent library name string, one of the libraries
-mentioned in a ``deplibs`` declaration.  There should be one ``DEPLIB`` record
-for each library name referenced.
-
 MODULE_CODE_GLOBALVAR Record
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
diff --git a/llvm/include/llvm/Bitcode/LLVMBitCodes.h b/llvm/include/llvm/Bitcode/LLVMBitCodes.h
--- a/llvm/include/llvm/Bitcode/LLVMBitCodes.h
+++ b/llvm/include/llvm/Bitcode/LLVMBitCodes.h
@@ -85,9 +85,6 @@
   MODULE_CODE_ASM = 4,         // ASM:         [strchr x N]
   MODULE_CODE_SECTIONNAME = 5, // SECTIONNAME: [strchr x N]
 
-  // FIXME: Remove DEPLIB in 4.0.
-  MODULE_CODE_DEPLIB = 6, // DEPLIB:      [strchr x N]
-
   // GLOBALVAR: [pointer type, isconst, initid,
   //             linkage, alignment, section, visibility, threadlocal]
   MODULE_CODE_GLOBALVAR = 7,
diff --git a/llvm/lib/AsmParser/LLLexer.cpp b/llvm/lib/AsmParser/LLLexer.cpp
--- a/llvm/lib/AsmParser/LLLexer.cpp
+++ b/llvm/lib/AsmParser/LLLexer.cpp
@@ -542,7 +542,6 @@
   KEYWORD(triple);
   KEYWORD(source_filename);
   KEYWORD(unwind);
-  KEYWORD(deplibs);             // FIXME: Remove in 4.0.
   KEYWORD(datalayout);
   KEYWORD(volatile);
   KEYWORD(atomic);
diff --git a/llvm/lib/AsmParser/LLParser.h b/llvm/lib/AsmParser/LLParser.h
--- a/llvm/lib/AsmParser/LLParser.h
+++ b/llvm/lib/AsmParser/LLParser.h
@@ -311,7 +311,6 @@
     bool ParseTargetDefinition();
     bool ParseModuleAsm();
     bool ParseSourceFileName();
-    bool ParseDepLibs();        // FIXME: Remove in 4.0.
     bool ParseUnnamedType();
     bool ParseNamedType();
     bool ParseDeclare();
diff --git a/llvm/lib/AsmParser/LLParser.cpp b/llvm/lib/AsmParser/LLParser.cpp
--- a/llvm/lib/AsmParser/LLParser.cpp
+++ b/llvm/lib/AsmParser/LLParser.cpp
@@ -327,7 +327,6 @@
       if (ParseSourceFileName())
         return true;
       break;
-    case lltok::kw_deplibs: if (ParseDepLibs()) return true; break;
     case lltok::LocalVarID: if (ParseUnnamedType()) return true; break;
     case lltok::LocalVar:   if (ParseNamedType()) return true; break;
     case lltok::GlobalID:   if (ParseUnnamedGlobal()) return true; break;
@@ -402,28 +401,6 @@
   return false;
 }
 
-/// toplevelentity
-///   ::= 'deplibs' '=' '[' ']'
-///   ::= 'deplibs' '=' '[' STRINGCONSTANT (',' STRINGCONSTANT)* ']'
-/// FIXME: Remove in 4.0. Currently parse, but ignore.
-bool LLParser::ParseDepLibs() {
-  assert(Lex.getKind() == lltok::kw_deplibs);
-  Lex.Lex();
-  if (ParseToken(lltok::equal, "expected '=' after deplibs") ||
-      ParseToken(lltok::lsquare, "expected '=' after deplibs"))
-    return true;
-
-  if (EatIfPresent(lltok::rsquare))
-    return false;
-
-  do {
-    std::string Str;
-    if (ParseStringConstant(Str)) return true;
-  } while (EatIfPresent(lltok::comma));
-
-  return ParseToken(lltok::rsquare, "expected ']' at end of list");
-}
-
 /// ParseUnnamedType:
 ///   ::= LocalVarID '=' 'type' type
 bool LLParser::ParseUnnamedType() {
diff --git a/llvm/lib/AsmParser/LLToken.h b/llvm/lib/AsmParser/LLToken.h
--- a/llvm/lib/AsmParser/LLToken.h
+++ b/llvm/lib/AsmParser/LLToken.h
@@ -87,7 +87,6 @@
   kw_triple,
   kw_source_filename,
   kw_unwind,
-  kw_deplibs, // FIXME: Remove in 4.0
   kw_datalayout,
   kw_volatile,
   kw_atomic,
diff --git a/llvm/lib/Bitcode/Reader/BitcodeAnalyzer.cpp b/llvm/lib/Bitcode/Reader/BitcodeAnalyzer.cpp
--- a/llvm/lib/Bitcode/Reader/BitcodeAnalyzer.cpp
+++ b/llvm/lib/Bitcode/Reader/BitcodeAnalyzer.cpp
@@ -130,7 +130,6 @@
       STRINGIFY_CODE(MODULE_CODE, DATALAYOUT)
       STRINGIFY_CODE(MODULE_CODE, ASM)
       STRINGIFY_CODE(MODULE_CODE, SECTIONNAME)
-      STRINGIFY_CODE(MODULE_CODE, DEPLIB) // FIXME: Remove in 4.0
       STRINGIFY_CODE(MODULE_CODE, GLOBALVAR)
       STRINGIFY_CODE(MODULE_CODE, FUNCTION)
       STRINGIFY_CODE(MODULE_CODE, ALIAS)
diff --git a/llvm/lib/Bitcode/Reader/BitcodeReader.cpp b/llvm/lib/Bitcode/Reader/BitcodeReader.cpp
--- a/llvm/lib/Bitcode/Reader/BitcodeReader.cpp
+++ b/llvm/lib/Bitcode/Reader/BitcodeReader.cpp
@@ -3595,14 +3595,6 @@
       TheModule->setModuleInlineAsm(S);
       break;
     }
-    case bitc::MODULE_CODE_DEPLIB: {  // DEPLIB: [strchr x N]
-      // FIXME: Remove in 4.0.
-      std::string S;
-      if (convertToString(Record, 0, S))
-        return error("Invalid record");
-      // Ignore value.
-      break;
-    }
     case bitc::MODULE_CODE_SECTIONNAME: {  // SECTIONNAME: [strchr x N]
       std::string S;
       if (convertToString(Record, 0, S))