Fix up instruction classes for Thumb2 RSB instructions to be consistent with

[oota-llvm.git] / lib / CodeGen / TargetLoweringObjectFileImpl.cpp

diff --git a/lib/CodeGen/TargetLoweringObjectFileImpl.cpp b/lib/CodeGen/TargetLoweringObjectFileImpl.cpp
index b74ed567ae4083616ae6afa5b67add27b0ee076e..605e2a817b1fd328a37462572417e949ba139cb5 100644 (file)
--- a/lib/CodeGen/TargetLoweringObjectFileImpl.cpp
+++ b/lib/CodeGen/TargetLoweringObjectFileImpl.cpp
@@ -461,6 +461,26 @@ void TargetLoweringObjectFileMachO::Initialize(MCContext &Ctx,
     = getContext().getMachOSection("__DATA", "__data", 0,
                                    SectionKind::getDataRel());
 
+  TLSDataSection // .tdata
+    = getContext().getMachOSection("__DATA", "__thread_data",
+                                   MCSectionMachO::S_THREAD_LOCAL_REGULAR,
+                                   SectionKind::getDataRel());
+  TLSBSSSection // .tbss
+    = getContext().getMachOSection("__DATA", "__thread_bss",
+                                   MCSectionMachO::S_THREAD_LOCAL_ZEROFILL,
+                                   SectionKind::getThreadBSS());
+                                   
+  // TODO: Verify datarel below.
+  TLSTLVSection // .tlv
+    = getContext().getMachOSection("__DATA", "__thread_vars",
+                                   MCSectionMachO::S_THREAD_LOCAL_VARIABLES,
+                                   SectionKind::getDataRel());
+                                   
+  TLSThreadInitSection
+    = getContext().getMachOSection("__DATA", "__thread_init",
+                          MCSectionMachO::S_THREAD_LOCAL_INIT_FUNCTION_POINTERS,
+                          SectionKind::getDataRel());
+                                   
   CStringSection // .cstring
     = getContext().getMachOSection("__TEXT", "__cstring", 
                                    MCSectionMachO::S_CSTRING_LITERALS,
@@ -607,6 +627,8 @@ void TargetLoweringObjectFileMachO::Initialize(MCContext &Ctx,
     getContext().getMachOSection("__DWARF", "__debug_inlined",
                                  MCSectionMachO::S_ATTR_DEBUG,
                                  SectionKind::getMetadata());
+                                 
+  TLSExtraDataSection = TLSTLVSection;
 }
 
 const MCSection *TargetLoweringObjectFileMachO::
@@ -647,8 +669,12 @@ getExplicitSectionGlobal(const GlobalValue *GV, SectionKind Kind,
 const MCSection *TargetLoweringObjectFileMachO::
 SelectSectionForGlobal(const GlobalValue *GV, SectionKind Kind,
                        Mangler *Mang, const TargetMachine &TM) const {
-  assert(!Kind.isThreadLocal() && "Darwin doesn't support TLS");
+  
+  // Handle one kind of thread local...
+  if (Kind.isThreadBSS()) return TLSBSSSection;
 
+  assert(!Kind.isThreadLocal() && "Darwin doesn't support TLS");
+  
   if (Kind.isText())
     return GV->isWeakForLinker() ? TextCoalSection : TextSection;
 
@@ -912,11 +938,17 @@ getCOFFSectionFlags(SectionKind K) {
   unsigned Flags = 0;
 
   if (!K.isMetadata())
-    Flags |= MCSectionCOFF::IMAGE_SCN_MEM_DISCARDABLE;
+    Flags |=
+      MCSectionCOFF::IMAGE_SCN_MEM_DISCARDABLE;
   else if (K.isText())
     Flags |=
       MCSectionCOFF::IMAGE_SCN_MEM_EXECUTE |
       MCSectionCOFF::IMAGE_SCN_CNT_CODE;
+  else if (K.isBSS ())
+    Flags |=
+      MCSectionCOFF::IMAGE_SCN_CNT_UNINITIALIZED_DATA |
+      MCSectionCOFF::IMAGE_SCN_MEM_READ |
+      MCSectionCOFF::IMAGE_SCN_MEM_WRITE;
   else if (K.isReadOnly())
     Flags |=
       MCSectionCOFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
@@ -941,6 +973,8 @@ getExplicitSectionGlobal(const GlobalValue *GV, SectionKind Kind,
 static const char *getCOFFSectionPrefixForUniqueGlobal(SectionKind Kind) {
   if (Kind.isText())
     return ".text$linkonce";
+  if (Kind.isBSS ())
+    return ".bss$linkonce";
   if (Kind.isWriteable())
     return ".data$linkonce";
   return ".rdata$linkonce";
@@ -959,9 +993,13 @@ SelectSectionForGlobal(const GlobalValue *GV, SectionKind Kind,
     SmallString<128> Name(Prefix, Prefix+strlen(Prefix));
     MCSymbol *Sym = Mang->getSymbol(GV);
     Name.append(Sym->getName().begin(), Sym->getName().end());
-    return getContext().getCOFFSection(Name.str(),
-                                       getCOFFSectionFlags(Kind),
-                                       Kind);
+
+    unsigned Characteristics = getCOFFSectionFlags(Kind);
+
+    Characteristics |= MCSectionCOFF::IMAGE_SCN_LNK_COMDAT;
+
+    return getContext().getCOFFSection(Name.str(), Characteristics,
+                          MCSectionCOFF::IMAGE_COMDAT_SELECT_EXACT_MATCH, Kind);
   }
 
   if (Kind.isText())