X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;ds=sidebyside;f=lib%2FMC%2FMCSection.cpp;h=9152f2b42a48578abc5eecffb1a58259dc269e8b;hb=00552e3875ee5f382db6c98286a241a7d0efe1b8;hp=bf25f3cc1636d70e0b9e0e107ef007489d98b1ca;hpb=68c5b83e1219c4803d4974b8007cc4c000c74602;p=oota-llvm.git

diff --git a/lib/MC/MCSection.cpp b/lib/MC/MCSection.cpp
index bf25f3cc163..9152f2b42a4 100644
--- a/lib/MC/MCSection.cpp
+++ b/lib/MC/MCSection.cpp
@@ -8,6 +8,7 @@
 //===----------------------------------------------------------------------===//
 
 #include "llvm/MC/MCSection.h"
+#include "llvm/MC/MCAssembler.h"
 #include "llvm/MC/MCAsmInfo.h"
 #include "llvm/MC/MCContext.h"
 #include "llvm/MC/MCSymbol.h"
@@ -18,6 +19,10 @@ using namespace llvm;
 // MCSection
 //===----------------------------------------------------------------------===//
 
+MCSection::MCSection(SectionVariant V, SectionKind K, MCSymbol *Begin)
+    : Begin(Begin), BundleGroupBeforeFirstInst(false), HasInstructions(false),
+      IsRegistered(false), Variant(V), Kind(K) {}
+
 MCSymbol *MCSection::getEndSymbol(MCContext &Ctx) {
   if (!End)
     End = Ctx.createTempSymbol("sec_end", true);
@@ -47,3 +52,58 @@ void MCSection::setBundleLockState(BundleLockStateType NewState) {
   }
   ++BundleLockNestingDepth;
 }
+
+MCSection::iterator
+MCSection::getSubsectionInsertionPoint(unsigned Subsection) {
+  if (Subsection == 0 && SubsectionFragmentMap.empty())
+    return end();
+
+  SmallVectorImpl<std::pair<unsigned, MCFragment *>>::iterator MI =
+      std::lower_bound(SubsectionFragmentMap.begin(),
+                       SubsectionFragmentMap.end(),
+                       std::make_pair(Subsection, (MCFragment *)nullptr));
+  bool ExactMatch = false;
+  if (MI != SubsectionFragmentMap.end()) {
+    ExactMatch = MI->first == Subsection;
+    if (ExactMatch)
+      ++MI;
+  }
+  iterator IP;
+  if (MI == SubsectionFragmentMap.end())
+    IP = end();
+  else
+    IP = MI->second;
+  if (!ExactMatch && Subsection != 0) {
+    // The GNU as documentation claims that subsections have an alignment of 4,
+    // although this appears not to be the case.
+    MCFragment *F = new MCDataFragment();
+    SubsectionFragmentMap.insert(MI, std::make_pair(Subsection, F));
+    getFragmentList().insert(IP, F);
+    F->setParent(this);
+  }
+
+  return IP;
+}
+
+#if !defined(NDEBUG) || defined(LLVM_ENABLE_DUMP)
+void MCSection::dump() {
+  raw_ostream &OS = llvm::errs();
+
+  OS << "<MCSection";
+  OS << " Fragments:[\n      ";
+  for (auto it = begin(), ie = end(); it != ie; ++it) {
+    if (it != begin())
+      OS << ",\n      ";
+    it->dump();
+  }
+  OS << "]>";
+}
+#endif
+
+MCSection::iterator MCSection::begin() { return Fragments.begin(); }
+
+MCSection::iterator MCSection::end() { return Fragments.end(); }
+
+MCSection::reverse_iterator MCSection::rbegin() { return Fragments.rbegin(); }
+
+MCSection::reverse_iterator MCSection::rend() { return Fragments.rend(); }