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Add a DAGCombine xform to fold away redundant float->double->float conversions around...
[oota-llvm.git] / lib / CodeGen / TargetLoweringObjectFileImpl.cpp
diff --git a/lib/CodeGen/TargetLoweringObjectFileImpl.cpp b/lib/CodeGen/TargetLoweringObjectFileImpl.cpp
index 71ad3fb6f99f788d7eff3d6be51e8a81fc739298..3b25714c04b8d09e46842de4e96ec439fcb8dd78 100644 (file)
--- a/lib/CodeGen/TargetLoweringObjectFileImpl.cpp
+++ b/lib/CodeGen/TargetLoweringObjectFileImpl.cpp
@@ -518,12 +518,13 @@ void TargetLoweringObjectFileMachO::Initialize(MCContext &Ctx,
                                    SectionKind::getText());
   ConstTextCoalSection
     = getContext().getMachOSection("__TEXT", "__const_coal", 
-                                   MCSectionMachO::S_COALESCED,
+                                   MCSectionMachO::S_COALESCED |
+                                   MCSectionMachO::S_ATTR_PURE_INSTRUCTIONS,
                                    SectionKind::getText());
   ConstDataCoalSection
     = getContext().getMachOSection("__DATA","__const_coal",
                                    MCSectionMachO::S_COALESCED,
-                                   SectionKind::getText());
+                                   SectionKind::getReadOnly());
   ConstDataSection  // .const_data
     = getContext().getMachOSection("__DATA", "__const", 0,
                                    SectionKind::getReadOnlyWithRel());
@@ -825,32 +826,32 @@ void TargetLoweringObjectFileCOFF::Initialize(MCContext &Ctx,
   TargetLoweringObjectFile::Initialize(Ctx, TM);
   TextSection =
     getContext().getCOFFSection(".text",
-                                MCSectionCOFF::IMAGE_SCN_CNT_CODE |
-                                MCSectionCOFF::IMAGE_SCN_MEM_EXECUTE |
-                                MCSectionCOFF::IMAGE_SCN_MEM_READ,
+                                COFF::IMAGE_SCN_CNT_CODE |
+                                COFF::IMAGE_SCN_MEM_EXECUTE |
+                                COFF::IMAGE_SCN_MEM_READ,
                                 SectionKind::getText());
   DataSection =
     getContext().getCOFFSection(".data",
-                                MCSectionCOFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
-                                MCSectionCOFF::IMAGE_SCN_MEM_READ |
-                                MCSectionCOFF::IMAGE_SCN_MEM_WRITE,
+                                COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
+                                COFF::IMAGE_SCN_MEM_READ |
+                                COFF::IMAGE_SCN_MEM_WRITE,
                                 SectionKind::getDataRel());
   ReadOnlySection =
     getContext().getCOFFSection(".rdata",
-                                MCSectionCOFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
-                                MCSectionCOFF::IMAGE_SCN_MEM_READ,
+                                COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
+                                COFF::IMAGE_SCN_MEM_READ,
                                 SectionKind::getReadOnly());
   StaticCtorSection =
     getContext().getCOFFSection(".ctors",
-                                MCSectionCOFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
-                                MCSectionCOFF::IMAGE_SCN_MEM_READ |
-                                MCSectionCOFF::IMAGE_SCN_MEM_WRITE,
+                                COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
+                                COFF::IMAGE_SCN_MEM_READ |
+                                COFF::IMAGE_SCN_MEM_WRITE,
                                 SectionKind::getDataRel());
   StaticDtorSection =
     getContext().getCOFFSection(".dtors",
-                                MCSectionCOFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
-                                MCSectionCOFF::IMAGE_SCN_MEM_READ |
-                                MCSectionCOFF::IMAGE_SCN_MEM_WRITE,
+                                COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
+                                COFF::IMAGE_SCN_MEM_READ |
+                                COFF::IMAGE_SCN_MEM_WRITE,
                                 SectionKind::getDataRel());
 
   // FIXME: We're emitting LSDA info into a readonly section on COFF, even
@@ -859,76 +860,76 @@ void TargetLoweringObjectFileCOFF::Initialize(MCContext &Ctx,
   // adjusted or this should be a data section.
   LSDASection =
     getContext().getCOFFSection(".gcc_except_table",
-                                MCSectionCOFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
-                                MCSectionCOFF::IMAGE_SCN_MEM_READ,
+                                COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
+                                COFF::IMAGE_SCN_MEM_READ,
                                 SectionKind::getReadOnly());
   EHFrameSection =
     getContext().getCOFFSection(".eh_frame",
-                                MCSectionCOFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
-                                MCSectionCOFF::IMAGE_SCN_MEM_READ |
-                                MCSectionCOFF::IMAGE_SCN_MEM_WRITE,
+                                COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
+                                COFF::IMAGE_SCN_MEM_READ |
+                                COFF::IMAGE_SCN_MEM_WRITE,
                                 SectionKind::getDataRel());
 
   // Debug info.
   DwarfAbbrevSection =
     getContext().getCOFFSection(".debug_abbrev",
-                                MCSectionCOFF::IMAGE_SCN_MEM_DISCARDABLE |
-                                MCSectionCOFF::IMAGE_SCN_MEM_READ,
+                                COFF::IMAGE_SCN_MEM_DISCARDABLE |
+                                COFF::IMAGE_SCN_MEM_READ,
                                 SectionKind::getMetadata());
   DwarfInfoSection =
     getContext().getCOFFSection(".debug_info",
-                                MCSectionCOFF::IMAGE_SCN_MEM_DISCARDABLE |
-                                MCSectionCOFF::IMAGE_SCN_MEM_READ,
+                                COFF::IMAGE_SCN_MEM_DISCARDABLE |
+                                COFF::IMAGE_SCN_MEM_READ,
                                 SectionKind::getMetadata());
   DwarfLineSection =
     getContext().getCOFFSection(".debug_line",
-                                MCSectionCOFF::IMAGE_SCN_MEM_DISCARDABLE |
-                                MCSectionCOFF::IMAGE_SCN_MEM_READ,
+                                COFF::IMAGE_SCN_MEM_DISCARDABLE |
+                                COFF::IMAGE_SCN_MEM_READ,
                                 SectionKind::getMetadata());
   DwarfFrameSection =
     getContext().getCOFFSection(".debug_frame",
-                                MCSectionCOFF::IMAGE_SCN_MEM_DISCARDABLE |
-                                MCSectionCOFF::IMAGE_SCN_MEM_READ,
+                                COFF::IMAGE_SCN_MEM_DISCARDABLE |
+                                COFF::IMAGE_SCN_MEM_READ,
                                 SectionKind::getMetadata());
   DwarfPubNamesSection =
     getContext().getCOFFSection(".debug_pubnames",
-                                MCSectionCOFF::IMAGE_SCN_MEM_DISCARDABLE |
-                                MCSectionCOFF::IMAGE_SCN_MEM_READ,
+                                COFF::IMAGE_SCN_MEM_DISCARDABLE |
+                                COFF::IMAGE_SCN_MEM_READ,
                                 SectionKind::getMetadata());
   DwarfPubTypesSection =
     getContext().getCOFFSection(".debug_pubtypes",
-                                MCSectionCOFF::IMAGE_SCN_MEM_DISCARDABLE |
-                                MCSectionCOFF::IMAGE_SCN_MEM_READ,
+                                COFF::IMAGE_SCN_MEM_DISCARDABLE |
+                                COFF::IMAGE_SCN_MEM_READ,
                                 SectionKind::getMetadata());
   DwarfStrSection =
     getContext().getCOFFSection(".debug_str",
-                                MCSectionCOFF::IMAGE_SCN_MEM_DISCARDABLE |
-                                MCSectionCOFF::IMAGE_SCN_MEM_READ,
+                                COFF::IMAGE_SCN_MEM_DISCARDABLE |
+                                COFF::IMAGE_SCN_MEM_READ,
                                 SectionKind::getMetadata());
   DwarfLocSection =
     getContext().getCOFFSection(".debug_loc",
-                                MCSectionCOFF::IMAGE_SCN_MEM_DISCARDABLE |
-                                MCSectionCOFF::IMAGE_SCN_MEM_READ,
+                                COFF::IMAGE_SCN_MEM_DISCARDABLE |
+                                COFF::IMAGE_SCN_MEM_READ,
                                 SectionKind::getMetadata());
   DwarfARangesSection =
     getContext().getCOFFSection(".debug_aranges",
-                                MCSectionCOFF::IMAGE_SCN_MEM_DISCARDABLE |
-                                MCSectionCOFF::IMAGE_SCN_MEM_READ,
+                                COFF::IMAGE_SCN_MEM_DISCARDABLE |
+                                COFF::IMAGE_SCN_MEM_READ,
                                 SectionKind::getMetadata());
   DwarfRangesSection =
     getContext().getCOFFSection(".debug_ranges",
-                                MCSectionCOFF::IMAGE_SCN_MEM_DISCARDABLE |
-                                MCSectionCOFF::IMAGE_SCN_MEM_READ,
+                                COFF::IMAGE_SCN_MEM_DISCARDABLE |
+                                COFF::IMAGE_SCN_MEM_READ,
                                 SectionKind::getMetadata());
   DwarfMacroInfoSection =
     getContext().getCOFFSection(".debug_macinfo",
-                                MCSectionCOFF::IMAGE_SCN_MEM_DISCARDABLE |
-                                MCSectionCOFF::IMAGE_SCN_MEM_READ,
+                                COFF::IMAGE_SCN_MEM_DISCARDABLE |
+                                COFF::IMAGE_SCN_MEM_READ,
                                 SectionKind::getMetadata());
 
   DrectveSection =
     getContext().getCOFFSection(".drectve",
-                                MCSectionCOFF::IMAGE_SCN_LNK_INFO,
+                                COFF::IMAGE_SCN_LNK_INFO,
                                 SectionKind::getMetadata());
 }
 
@@ -936,27 +937,27 @@ static unsigned
 getCOFFSectionFlags(SectionKind K) {
   unsigned Flags = 0;
 
-  if (!K.isMetadata())
+  if (K.isMetadata())
     Flags |=
-      MCSectionCOFF::IMAGE_SCN_MEM_DISCARDABLE;
+      COFF::IMAGE_SCN_MEM_DISCARDABLE;
   else if (K.isText())
     Flags |=
-      MCSectionCOFF::IMAGE_SCN_MEM_EXECUTE |
-      MCSectionCOFF::IMAGE_SCN_CNT_CODE;
+      COFF::IMAGE_SCN_MEM_EXECUTE |
+      COFF::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;
+      COFF::IMAGE_SCN_CNT_UNINITIALIZED_DATA |
+      COFF::IMAGE_SCN_MEM_READ |
+      COFF::IMAGE_SCN_MEM_WRITE;
   else if (K.isReadOnly())
     Flags |=
-      MCSectionCOFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
-      MCSectionCOFF::IMAGE_SCN_MEM_READ;
+      COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
+      COFF::IMAGE_SCN_MEM_READ;
   else if (K.isWriteable())
     Flags |=
-      MCSectionCOFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
-      MCSectionCOFF::IMAGE_SCN_MEM_READ |
-      MCSectionCOFF::IMAGE_SCN_MEM_WRITE;
+      COFF::IMAGE_SCN_CNT_INITIALIZED_DATA |
+      COFF::IMAGE_SCN_MEM_READ |
+      COFF::IMAGE_SCN_MEM_WRITE;
 
   return Flags;
 }
@@ -995,10 +996,10 @@ SelectSectionForGlobal(const GlobalValue *GV, SectionKind Kind,
 
     unsigned Characteristics = getCOFFSectionFlags(Kind);
 
-    Characteristics |= MCSectionCOFF::IMAGE_SCN_LNK_COMDAT;
+    Characteristics |= COFF::IMAGE_SCN_LNK_COMDAT;
 
     return getContext().getCOFFSection(Name.str(), Characteristics,
-                          MCSectionCOFF::IMAGE_COMDAT_SELECT_EXACT_MATCH, Kind);
+                          COFF::IMAGE_COMDAT_SELECT_EXACT_MATCH, Kind);
   }
 
   if (Kind.isText())
C/C++ LLVM-based compilers that forbids OOTA behaviors