add llvm-mc support for parsing the .subsections_via_symbols directive.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@75500 91177308-0d34-0410-b5e6-96231b3b80d8

2 files changed, 19 insertions, 0 deletions

diff --git a/tools/llvm-mc/AsmParser.cpp b/tools/llvm-mc/AsmParser.cpp
index a2cdea4..fe9d4f3 100644
--- a/tools/llvm-mc/AsmParser.cpp
+++ b/tools/llvm-mc/AsmParser.cpp
@@ -527,6 +527,9 @@ bool AsmParser::ParseStatement() {
     if (!strcmp(IDVal, ".zerofill"))
       return ParseDirectiveDarwinZerofill();
 
+    if (!strcmp(IDVal, ".subsections_via_symbols"))
+      return ParseDirectiveDarwinSubsectionsViaSymbols();
+
     Warning(IDLoc, "ignoring directive for now");
     EatToEndOfStatement();
     return false;
@@ -1052,3 +1055,16 @@ bool AsmParser::ParseDirectiveDarwinZerofill() {
 
   return false;
 }
+
+/// ParseDirectiveDarwinSubsectionsViaSymbols
+///  ::= .subsections_via_symbols
+bool AsmParser::ParseDirectiveDarwinSubsectionsViaSymbols() {
+  if (Lexer.isNot(asmtok::EndOfStatement))
+    return TokError("unexpected token in '.subsections_via_symbols' directive");
+  
+  Lexer.Lex();
+
+  Out.SubsectionsViaSymbols();
+
+  return false;
+}
diff --git a/tools/llvm-mc/AsmParser.h b/tools/llvm-mc/AsmParser.h
index 620ac19..fcdd064 100644
--- a/tools/llvm-mc/AsmParser.h
+++ b/tools/llvm-mc/AsmParser.h
@@ -112,6 +112,9 @@ private:
 
   bool ParseDirectiveComm(bool IsLocal); // ".comm" and ".lcomm"
   bool ParseDirectiveDarwinZerofill(); // Darwin specific ".zerofill"
+
+  // Darwin specific ".subsections_via_symbols"
+  bool ParseDirectiveDarwinSubsectionsViaSymbols();
 };
 
 } // end namespace llvm