introduce WinCOFFObjectWriter, patch by Michael Spencer!

[oota-llvm.git] / lib / MC / MCSectionCOFF.cpp

diff --git a/lib/MC/MCSectionCOFF.cpp b/lib/MC/MCSectionCOFF.cpp
index 103a80f1e37d3c97b464ae9d26183c7cf5a5ffc3..eb531600f72736e55259b11bbc3e243eb9fc29ab 100644 (file)
--- a/lib/MC/MCSectionCOFF.cpp
+++ b/lib/MC/MCSectionCOFF.cpp
@@ -44,7 +44,33 @@ void MCSectionCOFF::PrintSwitchToSection(const MCAsmInfo &MAI,
     OS << 'w';
   else
     OS << 'r';
-  if (getCharacteristics() & MCSectionCOFF::IMAGE_SCN_MEM_DISCARDABLE)
+  if (getCharacteristics() & COFF::IMAGE_SCN_MEM_DISCARDABLE)
     OS << 'n';
   OS << "\"\n";
+  
+  if (getCharacteristics() & COFF::IMAGE_SCN_LNK_COMDAT) {
+    switch (Selection) {
+      case COFF::IMAGE_COMDAT_SELECT_NODUPLICATES:
+        OS << "\t.linkonce one_only\n";
+        break;
+      case COFF::IMAGE_COMDAT_SELECT_ANY:
+        OS << "\t.linkonce discard\n";
+        break;
+      case COFF::IMAGE_COMDAT_SELECT_SAME_SIZE:
+        OS << "\t.linkonce same_size\n";
+        break;
+      case COFF::IMAGE_COMDAT_SELECT_EXACT_MATCH:
+        OS << "\t.linkonce same_contents\n";
+        break;
+    //NOTE: as of binutils 2.20, there is no way to specifiy select largest
+    //      with the .linkonce directive. For now, we treat it as an invalid
+    //      comdat selection value.
+      case COFF::IMAGE_COMDAT_SELECT_LARGEST:
+    //  OS << "\t.linkonce largest\n";
+    //  break;
+      default:
+        assert (0 && "unsupported COFF selection type");
+        break;
+    }
+  }
 }