Update llvm to r84119.

1 files changed, 221 insertions, 0 deletions

diff --git a/include/llvm/MC/SectionKind.h b/include/llvm/MC/SectionKind.h
new file mode 100644
index 0000000..945cff7
--- /dev/null
+++ b/include/llvm/MC/SectionKind.h
@@ -0,0 +1,221 @@
+//===-- llvm/Target/TargetLoweringObjectFile.h - Object Info ----*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file implements classes used to handle lowerings specific to common
+// object file formats.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_MC_SECTIONKIND_H
+#define LLVM_MC_SECTIONKIND_H
+
+namespace llvm {
+
+/// SectionKind - This is a simple POD value that classifies the properties of
+/// a section.  A section is classified into the deepest possible
+/// classification, and then the target maps them onto their sections based on
+/// what capabilities they have.
+///
+/// The comments below describe these as if they were an inheritance hierarchy
+/// in order to explain the predicates below.
+///
+class SectionKind {
+  enum Kind {
+    /// Metadata - Debug info sections or other metadata.
+    Metadata,
+    
+    /// Text - Text section, used for functions and other executable code.
+    Text,
+    
+    /// ReadOnly - Data that is never written to at program runtime by the
+    /// program or the dynamic linker.  Things in the top-level readonly
+    /// SectionKind are not mergeable.
+    ReadOnly,
+
+        /// MergableCString - Any null-terminated string which allows merging.
+        /// These values are known to end in a nul value of the specified size,
+        /// not otherwise contain a nul value, and be mergable.  This allows the
+        /// linker to unique the strings if it so desires.
+
+           /// Mergeable1ByteCString - 1 byte mergable, null terminated, string.
+           Mergeable1ByteCString,
+    
+           /// Mergeable2ByteCString - 2 byte mergable, null terminated, string.
+           Mergeable2ByteCString,
+
+           /// Mergeable4ByteCString - 4 byte mergable, null terminated, string.
+           Mergeable4ByteCString,
+
+        /// MergeableConst - These are sections for merging fixed-length
+        /// constants together.  For example, this can be used to unique
+        /// constant pool entries etc.
+        MergeableConst,
+    
+            /// MergeableConst4 - This is a section used by 4-byte constants,
+            /// for example, floats.
+            MergeableConst4,
+    
+            /// MergeableConst8 - This is a section used by 8-byte constants,
+            /// for example, doubles.
+            MergeableConst8,
+
+            /// MergeableConst16 - This is a section used by 16-byte constants,
+            /// for example, vectors.
+            MergeableConst16,
+    
+    /// Writeable - This is the base of all segments that need to be written
+    /// to during program runtime.
+    
+       /// ThreadLocal - This is the base of all TLS segments.  All TLS
+       /// objects must be writeable, otherwise there is no reason for them to
+       /// be thread local!
+    
+           /// ThreadBSS - Zero-initialized TLS data objects.
+           ThreadBSS,
+    
+           /// ThreadData - Initialized TLS data objects.
+           ThreadData,
+    
+       /// GlobalWriteableData - Writeable data that is global (not thread
+       /// local).
+    
+           /// BSS - Zero initialized writeable data.
+           BSS,
+
+           /// DataRel - This is the most general form of data that is written
+           /// to by the program, it can have random relocations to arbitrary
+           /// globals.
+           DataRel,
+
+               /// DataRelLocal - This is writeable data that has a non-zero
+               /// initializer and has relocations in it, but all of the
+               /// relocations are known to be within the final linked image
+               /// the global is linked into.
+               DataRelLocal,
+
+                   /// DataNoRel - This is writeable data that has a non-zero
+                   /// initializer, but whose initializer is known to have no
+                   /// relocations.
+                   DataNoRel,
+
+           /// ReadOnlyWithRel - These are global variables that are never
+           /// written to by the program, but that have relocations, so they
+           /// must be stuck in a writeable section so that the dynamic linker
+           /// can write to them.  If it chooses to, the dynamic linker can
+           /// mark the pages these globals end up on as read-only after it is
+           /// done with its relocation phase.
+           ReadOnlyWithRel,
+    
+               /// ReadOnlyWithRelLocal - This is data that is readonly by the
+               /// program, but must be writeable so that the dynamic linker
+               /// can perform relocations in it.  This is used when we know
+               /// that all the relocations are to globals in this final
+               /// linked image.
+               ReadOnlyWithRelLocal
+    
+  } K : 8;
+public:
+  
+  bool isMetadata() const { return K == Metadata; }
+  bool isText() const { return K == Text; }
+  
+  bool isReadOnly() const {
+    return K == ReadOnly || isMergeableCString() ||
+           isMergeableConst();
+  }
+
+  bool isMergeableCString() const {
+    return K == Mergeable1ByteCString || K == Mergeable2ByteCString ||
+           K == Mergeable4ByteCString;
+  }
+  bool isMergeable1ByteCString() const { return K == Mergeable1ByteCString; }
+  bool isMergeable2ByteCString() const { return K == Mergeable2ByteCString; }
+  bool isMergeable4ByteCString() const { return K == Mergeable4ByteCString; }
+  
+  bool isMergeableConst() const {
+    return K == MergeableConst || K == MergeableConst4 ||
+           K == MergeableConst8 || K == MergeableConst16;
+  }
+  bool isMergeableConst4() const { return K == MergeableConst4; }
+  bool isMergeableConst8() const { return K == MergeableConst8; }
+  bool isMergeableConst16() const { return K == MergeableConst16; }
+  
+  bool isWriteable() const {
+    return isThreadLocal() || isGlobalWriteableData();
+  }
+  
+  bool isThreadLocal() const {
+    return K == ThreadData || K == ThreadBSS;
+  }
+  
+  bool isThreadBSS() const { return K == ThreadBSS; } 
+  bool isThreadData() const { return K == ThreadData; } 
+
+  bool isGlobalWriteableData() const {
+    return isBSS() || isDataRel() || isReadOnlyWithRel();
+  }
+  
+  bool isBSS() const { return K == BSS; }
+  
+  bool isDataRel() const {
+    return K == DataRel || K == DataRelLocal || K == DataNoRel;
+  }
+  
+  bool isDataRelLocal() const {
+    return K == DataRelLocal || K == DataNoRel;
+  }
+
+  bool isDataNoRel() const { return K == DataNoRel; }
+  
+  bool isReadOnlyWithRel() const {
+    return K == ReadOnlyWithRel || K == ReadOnlyWithRelLocal;
+  }
+
+  bool isReadOnlyWithRelLocal() const {
+    return K == ReadOnlyWithRelLocal;
+  }
+private: 
+  static SectionKind get(Kind K) {
+    SectionKind Res;
+    Res.K = K;
+    return Res;
+  }
+public:
+  
+  static SectionKind getMetadata() { return get(Metadata); }
+  static SectionKind getText() { return get(Text); }
+  static SectionKind getReadOnly() { return get(ReadOnly); }
+  static SectionKind getMergeable1ByteCString() {
+    return get(Mergeable1ByteCString);
+  }
+  static SectionKind getMergeable2ByteCString() {
+    return get(Mergeable2ByteCString);
+  }
+  static SectionKind getMergeable4ByteCString() {
+    return get(Mergeable4ByteCString);
+  }
+  static SectionKind getMergeableConst() { return get(MergeableConst); }
+  static SectionKind getMergeableConst4() { return get(MergeableConst4); }
+  static SectionKind getMergeableConst8() { return get(MergeableConst8); }
+  static SectionKind getMergeableConst16() { return get(MergeableConst16); }
+  static SectionKind getThreadBSS() { return get(ThreadBSS); }
+  static SectionKind getThreadData() { return get(ThreadData); }
+  static SectionKind getBSS() { return get(BSS); }
+  static SectionKind getDataRel() { return get(DataRel); }
+  static SectionKind getDataRelLocal() { return get(DataRelLocal); }
+  static SectionKind getDataNoRel() { return get(DataNoRel); }
+  static SectionKind getReadOnlyWithRel() { return get(ReadOnlyWithRel); }
+  static SectionKind getReadOnlyWithRelLocal(){
+    return get(ReadOnlyWithRelLocal);
+  }
+};
+  
+} // end namespace llvm
+
+#endif