MC: Add dyn_cast support to MCSection.

 - Of questionable utility, since in general anything which wants to do this should probably be within a target specific hook, which can rely on the sections being of the appropriate type. However, it can be useful for short term hacks.

llvm-svn: 103980

2 files changed, 8 insertions, 2 deletions

diff --git a/llvm/lib/MC/MCSectionMachO.cpp b/llvm/lib/MC/MCSectionMachO.cpp
index 7a519e8daf0..4ad3a2fbc87 100644
--- a/llvm/lib/MC/MCSectionMachO.cpp
+++ b/llvm/lib/MC/MCSectionMachO.cpp
@@ -73,7 +73,7 @@ ENTRY(0 /*FIXME*/,           S_ATTR_LOC_RELOC)
 
 MCSectionMachO::MCSectionMachO(StringRef Segment, StringRef Section,
                                unsigned TAA, unsigned reserved2, SectionKind K)
-  : MCSection(K), TypeAndAttributes(TAA), Reserved2(reserved2) {
+  : MCSection(SV_MachO, K), TypeAndAttributes(TAA), Reserved2(reserved2) {
   assert(Segment.size() <= 16 && Section.size() <= 16 &&
          "Segment or section string too long");
   for (unsigned i = 0; i != 16; ++i) {
diff --git a/llvm/lib/Target/PIC16/PIC16Section.h b/llvm/lib/Target/PIC16/PIC16Section.h
index 9039ca781a3..5b33b51a386 100644
--- a/llvm/lib/Target/PIC16/PIC16Section.h
+++ b/llvm/lib/Target/PIC16/PIC16Section.h
@@ -44,7 +44,8 @@ namespace llvm {
     unsigned Size;
     
     PIC16Section(StringRef name, SectionKind K, StringRef addr, int color)
-      : MCSection(K), Name(name), Address(addr), Color(color), Size(0) {
+      : MCSection(SV_PIC16, K), Name(name), Address(addr),
+        Color(color), Size(0) {
     }
     
   public:
@@ -86,6 +87,11 @@ namespace llvm {
     /// to a section.
     virtual void PrintSwitchToSection(const MCAsmInfo &MAI,
                                       raw_ostream &OS) const;
+
+    static bool classof(const MCSection *S) {
+      return S->getVariant() == SV_PIC16;
+    }
+    static bool classof(const PIC16Section *) { return true; }
   };
 
 } // end namespace llvm