diff options
Diffstat (limited to 'include/llvm/Target/TargetAsmInfo.h')
| -rw-r--r-- | include/llvm/Target/TargetAsmInfo.h | 189 |
1 files changed, 0 insertions, 189 deletions
diff --git a/include/llvm/Target/TargetAsmInfo.h b/include/llvm/Target/TargetAsmInfo.h index daa30a0..97da9ab 100644 --- a/include/llvm/Target/TargetAsmInfo.h +++ b/include/llvm/Target/TargetAsmInfo.h @@ -35,195 +35,6 @@ namespace llvm { }; } - /// SectionKind - This is a simple POD value that classifies the properties of - /// a section. A global variable 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 { - public: - 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, - - /// MergeableCString - This is a special section for nul-terminated - /// strings. The linker can unique the C strings, knowing their - /// semantics. Because it uniques based on the nul terminators, the - /// compiler can't put strings in this section that have embeded nuls - /// in them. - MergeableCString, - - /// 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 - - }; - - private: - Kind K : 6; - - /// Weak - This is true if the referenced symbol is weak (i.e. linkonce, - /// weak, weak_odr, etc). This is orthogonal from the categorization. - bool Weak : 1; - - /// ExplicitSection - This is true if the global had a section explicitly - /// specified on it. - bool ExplicitSection : 1; - public: - - // FIXME: REMOVE. - Kind getKind() const { return K; } - - bool isWeak() const { return Weak; } - bool hasExplicitSection() const { return ExplicitSection; } - - - bool isMetadata() const { return K == Metadata; } - bool isText() const { return K == Text; } - - bool isReadOnly() const { - return K == ReadOnly || K == MergeableCString || isMergeableConst(); - } - - bool isMergeableCString() const { return K == MergeableCString; } - 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; - } - - static SectionKind get(Kind K, bool isWeak = false, - bool hasExplicitSection = false) { - SectionKind Res; - Res.K = K; - Res.Weak = isWeak; - Res.ExplicitSection = hasExplicitSection; - return Res; - } - }; - - class Section { - public: - - std::string Name; - SectionKind Kind; - - explicit Section() { } - const std::string &getName() const { return Name; } - SectionKind getKind() const { return Kind; } - }; - /// TargetAsmInfo - This class is intended to be used as a base class for asm /// properties and features specific to the target. class TargetAsmInfo { |