MC: Implement support for new .addrsig and .addrsig_sym directives.

Part of the address-significance tables proposal:
http://lists.llvm.org/pipermail/llvm-dev/2018-May/123514.html

Differential Revision: https://reviews.llvm.org/D47744

llvm-svn: 337328

1 files changed, 14 insertions, 0 deletions

diff --git a/llvm/lib/MC/MCAsmStreamer.cpp b/llvm/lib/MC/MCAsmStreamer.cpp
index 5398cfea786..1429f647b61 100644
--- a/llvm/lib/MC/MCAsmStreamer.cpp
+++ b/llvm/lib/MC/MCAsmStreamer.cpp
@@ -319,6 +319,9 @@ public:
                           const MCExpr *Expr, SMLoc Loc,
                           const MCSubtargetInfo &STI) override;
 
+  void EmitAddrsig() override;
+  void EmitAddrsigSym(const MCSymbol *Sym) override;
+
   /// If this file is backed by an assembly streamer, this dumps the specified
   /// string in the output .s file. This capability is indicated by the
   /// hasRawTextSupport() predicate.
@@ -1846,6 +1849,17 @@ bool MCAsmStreamer::EmitRelocDirective(const MCExpr &Offset, StringRef Name,
   return false;
 }
 
+void MCAsmStreamer::EmitAddrsig() {
+  OS << "\t.addrsig";
+  EmitEOL();
+}
+
+void MCAsmStreamer::EmitAddrsigSym(const MCSymbol *Sym) {
+  OS << "\t.addrsig_sym ";
+  Sym->print(OS, MAI);
+  EmitEOL();
+}
+
 /// EmitRawText - If this file is backed by an assembly streamer, this dumps
 /// the specified string in the output .s file.  This capability is
 /// indicated by the hasRawTextSupport() predicate.