Add back support for reading and parsing 'deplibs'.

This is for backwards compatibility for pre-3.x bc files. The code reads the
code, but does nothing with it.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@168779 91177308-0d34-0410-b5e6-96231b3b80d8

4 files changed, 26 insertions, 0 deletions

diff --git a/lib/AsmParser/LLLexer.cpp b/lib/AsmParser/LLLexer.cpp
index c498da7352..1f772a997f 100644
--- a/lib/AsmParser/LLLexer.cpp
+++ b/lib/AsmParser/LLLexer.cpp
@@ -486,6 +486,7 @@ lltok::Kind LLLexer::LexIdentifier() {
   KEYWORD(target);
   KEYWORD(triple);
   KEYWORD(unwind);
+  KEYWORD(deplibs);             // FIXME: Remove in 4.0.
   KEYWORD(datalayout);
   KEYWORD(volatile);
   KEYWORD(atomic);
diff --git a/lib/AsmParser/LLParser.cpp b/lib/AsmParser/LLParser.cpp
index 8a9f951908..57b67fe612 100644
--- a/lib/AsmParser/LLParser.cpp
+++ b/lib/AsmParser/LLParser.cpp
@@ -168,6 +168,7 @@ bool LLParser::ParseTopLevelEntities() {
     case lltok::kw_define:  if (ParseDefine()) return true; break;
     case lltok::kw_module:  if (ParseModuleAsm()) return true; break;
     case lltok::kw_target:  if (ParseTargetDefinition()) 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;
@@ -263,6 +264,28 @@ bool LLParser::ParseTargetDefinition() {
   }
 }
 
+/// 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/lib/AsmParser/LLParser.h b/lib/AsmParser/LLParser.h
index 5cebd974f3..e481283e6e 100644
--- a/lib/AsmParser/LLParser.h
+++ b/lib/AsmParser/LLParser.h
@@ -217,6 +217,7 @@ namespace llvm {
     bool ValidateEndOfModule();
     bool ParseTargetDefinition();
     bool ParseModuleAsm();
+    bool ParseDepLibs();        // FIXME: Remove in 4.0.
     bool ParseUnnamedType();
     bool ParseNamedType();
     bool ParseDeclare();
diff --git a/lib/AsmParser/LLToken.h b/lib/AsmParser/LLToken.h
index d102d91b3b..2ed2c221a8 100644
--- a/lib/AsmParser/LLToken.h
+++ b/lib/AsmParser/LLToken.h
@@ -54,6 +54,7 @@ namespace lltok {
     kw_target,
     kw_triple,
     kw_unwind,
+    kw_deplibs,                 // FIXME: Remove in 4.0
     kw_datalayout,
     kw_volatile,
     kw_atomic,