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Change versioning to per debug info descriptor (merged with tag.)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28782 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Jim Laskey
parent
014f98c7e5
commit
ed4e566dda
@ -90,23 +90,35 @@ public:
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///
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class DebugInfoDesc {
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private:
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enum {
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tag_mask = 0x0000ffff,
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version_shift = 16
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};
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unsigned Tag; // Content indicator. Dwarf values are
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// used but that does not limit use to
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// Dwarf writers.
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protected:
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DebugInfoDesc(unsigned T) : Tag(T) {}
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DebugInfoDesc(unsigned T) : Tag(T | (LLVMDebugVersion << version_shift)) {}
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public:
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virtual ~DebugInfoDesc() {}
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// Accessors
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unsigned getTag() const { return Tag; }
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unsigned getTag() const { return Tag & tag_mask; }
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unsigned getVersion() const { return Tag >> version_shift; }
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/// TagFromGlobal - Returns the Tag number from a debug info descriptor
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/// GlobalVariable. Return DIIValid if operand is not an unsigned int.
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/// TagFromGlobal - Returns the tag number from a debug info descriptor
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/// GlobalVariable. Return DIIValid if operand is not an unsigned int.
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static unsigned TagFromGlobal(GlobalVariable *GV);
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/// VersionFromGlobal - Returns the version number from a debug info
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/// descriptor GlobalVariable. Return DIIValid if operand is not an unsigned
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/// int.
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static unsigned VersionFromGlobal(GlobalVariable *GV);
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/// DescFactory - Create an instance of debug info descriptor based on Tag.
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/// Return NULL if not a recognized Tag.
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static DebugInfoDesc *DescFactory(unsigned Tag);
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@ -216,7 +228,6 @@ public:
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/// source/header file.
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class CompileUnitDesc : public AnchoredDesc {
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private:
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unsigned DebugVersion; // LLVM debug version when produced.
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unsigned Language; // Language number (ex. DW_LANG_C89.)
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std::string FileName; // Source file name.
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std::string Directory; // Source file directory.
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@ -227,7 +238,6 @@ public:
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// Accessors
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unsigned getDebugVersion() const { return DebugVersion; }
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unsigned getLanguage() const { return Language; }
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const std::string &getFileName() const { return FileName; }
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const std::string &getDirectory() const { return Directory; }
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@ -243,10 +253,6 @@ public:
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static bool classof(const CompileUnitDesc *) { return true; }
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static bool classof(const DebugInfoDesc *D);
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/// DebugVersionFromGlobal - Returns the version number from a compile unit
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/// GlobalVariable. Return DIIValid if operand is not an unsigned int.
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static unsigned DebugVersionFromGlobal(GlobalVariable *GV);
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/// ApplyToFields - Target the visitor to the fields of the CompileUnitDesc.
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///
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virtual void ApplyToFields(DIVisitor *Visitor);
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@ -702,17 +708,13 @@ public:
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/// into DebugInfoDesc objects.
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class DIDeserializer {
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private:
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unsigned DebugVersion; // Version of debug information in use.
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std::map<GlobalVariable *, DebugInfoDesc *> GlobalDescs;
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// Previously defined gloabls.
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public:
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DIDeserializer() : DebugVersion(LLVMDebugVersion) {}
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DIDeserializer() {}
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~DIDeserializer() {}
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// Accessors
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unsigned getDebugVersion() const { return DebugVersion; }
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/// Deserialize - Reconstitute a GlobalVariable into it's component
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/// DebugInfoDesc objects.
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DebugInfoDesc *Deserialize(Value *V);
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@ -780,14 +782,12 @@ private:
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Invalid,
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Valid
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};
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unsigned DebugVersion; // Version of debug information in use.
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std::map<GlobalVariable *, unsigned> Validity;// Tracks prior results.
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std::map<unsigned, unsigned> Counts; // Count of fields per Tag type.
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public:
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DIVerifier()
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: DebugVersion(LLVMDebugVersion)
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, Validity()
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: Validity()
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, Counts()
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{}
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~DIVerifier() {}
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@ -1039,15 +1039,10 @@ public:
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std::vector<T *> AnchoredDescs;
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for (unsigned i = 0, N = Globals.size(); i < N; ++i) {
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GlobalVariable *GV = Globals[i];
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unsigned Tag = DebugInfoDesc::TagFromGlobal(GV);
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if (isa<CompileUnitDesc>(&Desc)) {
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unsigned DebugVersion = CompileUnitDesc::DebugVersionFromGlobal(GV);
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// FIXME - In the short term, changes are too drastic to continue.
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if (DebugVersion != LLVMDebugVersion) break;
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}
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if (Tag == Desc.getTag()) {
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// FIXME - In the short term, changes are too drastic to continue.
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if (DebugInfoDesc::TagFromGlobal(GV) == Desc.getTag() &&
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DebugInfoDesc::VersionFromGlobal(GV) == LLVMDebugVersion) {
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AnchoredDescs.push_back(cast<T>(DR.Deserialize(GV)));
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}
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}
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@ -455,11 +455,20 @@ public:
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//===----------------------------------------------------------------------===//
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/// TagFromGlobal - Returns the Tag number from a debug info descriptor
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/// GlobalVariable.
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/// TagFromGlobal - Returns the tag number from a debug info descriptor
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/// GlobalVariable. Return DIIValid if operand is not an unsigned int.
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unsigned DebugInfoDesc::TagFromGlobal(GlobalVariable *GV) {
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ConstantUInt *C = getUIntOperand(GV, 0);
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return C ? (unsigned)C->getValue() : (unsigned)DW_TAG_invalid;
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return C ? ((unsigned)C->getValue() & tag_mask) : (unsigned)DW_TAG_invalid;
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}
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/// VersionFromGlobal - Returns the version number from a debug info
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/// descriptor GlobalVariable. Return DIIValid if operand is not an unsigned
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/// int.
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unsigned DebugInfoDesc::VersionFromGlobal(GlobalVariable *GV) {
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ConstantUInt *C = getUIntOperand(GV, 0);
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return C ? ((unsigned)C->getValue() >> version_shift) :
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(unsigned)DW_TAG_invalid;
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}
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/// DescFactory - Create an instance of debug info descriptor based on Tag.
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@ -563,6 +572,7 @@ const char *AnchorDesc::getTypeString() const {
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#ifndef NDEBUG
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void AnchorDesc::dump() {
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std::cerr << getDescString() << " "
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<< "Version(" << getVersion() << "), "
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<< "Tag(" << getTag() << "), "
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<< "AnchorTag(" << AnchorTag << ")\n";
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}
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@ -589,7 +599,6 @@ void AnchoredDesc::ApplyToFields(DIVisitor *Visitor) {
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CompileUnitDesc::CompileUnitDesc()
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: AnchoredDesc(DW_TAG_compile_unit)
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, DebugVersion(LLVMDebugVersion)
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, Language(0)
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, FileName("")
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, Directory("")
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@ -601,19 +610,11 @@ bool CompileUnitDesc::classof(const DebugInfoDesc *D) {
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return D->getTag() == DW_TAG_compile_unit;
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}
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/// DebugVersionFromGlobal - Returns the version number from a compile unit
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/// GlobalVariable.
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unsigned CompileUnitDesc::DebugVersionFromGlobal(GlobalVariable *GV) {
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ConstantUInt *C = getUIntOperand(GV, 2);
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return C ? (unsigned)C->getValue() : (unsigned)DW_TAG_invalid;
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}
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/// ApplyToFields - Target the visitor to the fields of the CompileUnitDesc.
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///
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void CompileUnitDesc::ApplyToFields(DIVisitor *Visitor) {
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AnchoredDesc::ApplyToFields(Visitor);
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Visitor->Apply(DebugVersion);
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Visitor->Apply(Language);
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Visitor->Apply(FileName);
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Visitor->Apply(Directory);
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@ -642,9 +643,9 @@ const char *CompileUnitDesc::getAnchorString() const {
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#ifndef NDEBUG
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void CompileUnitDesc::dump() {
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std::cerr << getDescString() << " "
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<< "Version(" << getVersion() << "), "
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<< "Tag(" << getTag() << "), "
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<< "Anchor(" << getAnchor() << "), "
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<< "DebugVersion(" << DebugVersion << "), "
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<< "Language(" << Language << "), "
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<< "FileName(\"" << FileName << "\"), "
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<< "Directory(\"" << Directory << "\"), "
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@ -696,6 +697,7 @@ const char *TypeDesc::getTypeString() const {
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#ifndef NDEBUG
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void TypeDesc::dump() {
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std::cerr << getDescString() << " "
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<< "Version(" << getVersion() << "), "
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<< "Tag(" << getTag() << "), "
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<< "Context(" << Context << "), "
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<< "Name(\"" << Name << "\"), "
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@ -742,6 +744,7 @@ const char *BasicTypeDesc::getTypeString() const {
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#ifndef NDEBUG
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void BasicTypeDesc::dump() {
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std::cerr << getDescString() << " "
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<< "Version(" << getVersion() << "), "
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<< "Tag(" << getTag() << "), "
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<< "Context(" << getContext() << "), "
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<< "Name(\"" << getName() << "\"), "
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@ -799,6 +802,7 @@ const char *DerivedTypeDesc::getTypeString() const {
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#ifndef NDEBUG
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void DerivedTypeDesc::dump() {
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std::cerr << getDescString() << " "
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<< "Version(" << getVersion() << "), "
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<< "Tag(" << getTag() << "), "
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<< "Context(" << getContext() << "), "
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<< "Name(\"" << getName() << "\"), "
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@ -853,6 +857,7 @@ const char *CompositeTypeDesc::getTypeString() const {
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#ifndef NDEBUG
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void CompositeTypeDesc::dump() {
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std::cerr << getDescString() << " "
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<< "Version(" << getVersion() << "), "
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<< "Tag(" << getTag() << "), "
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<< "Context(" << getContext() << "), "
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<< "Name(\"" << getName() << "\"), "
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@ -901,6 +906,7 @@ const char *SubrangeDesc::getTypeString() const {
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#ifndef NDEBUG
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void SubrangeDesc::dump() {
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std::cerr << getDescString() << " "
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<< "Version(" << getVersion() << "), "
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<< "Tag(" << getTag() << "), "
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<< "Lo(" << Lo << "), "
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<< "Hi(" << Hi << ")\n";
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@ -944,6 +950,7 @@ const char *EnumeratorDesc::getTypeString() const {
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#ifndef NDEBUG
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void EnumeratorDesc::dump() {
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std::cerr << getDescString() << " "
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<< "Version(" << getVersion() << "), "
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<< "Tag(" << getTag() << "), "
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<< "Name(" << Name << "), "
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<< "Value(" << Value << ")\n";
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@ -1005,6 +1012,7 @@ const char *VariableDesc::getTypeString() const {
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#ifndef NDEBUG
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void VariableDesc::dump() {
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std::cerr << getDescString() << " "
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<< "Version(" << getVersion() << "), "
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<< "Tag(" << getTag() << "), "
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<< "Context(" << Context << "), "
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<< "Name(\"" << Name << "\"), "
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@ -1087,6 +1095,7 @@ const char *GlobalVariableDesc::getAnchorString() const {
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#ifndef NDEBUG
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void GlobalVariableDesc::dump() {
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std::cerr << getDescString() << " "
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<< "Version(" << getVersion() << "), "
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<< "Tag(" << getTag() << "), "
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<< "Anchor(" << getAnchor() << "), "
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<< "Name(\"" << getName() << "\"), "
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@ -1138,6 +1147,7 @@ const char *SubprogramDesc::getAnchorString() const {
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#ifndef NDEBUG
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void SubprogramDesc::dump() {
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std::cerr << getDescString() << " "
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<< "Version(" << getVersion() << "), "
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<< "Tag(" << getTag() << "), "
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<< "Anchor(" << getAnchor() << "), "
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<< "Name(\"" << getName() << "\"), "
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@ -1184,6 +1194,7 @@ const char *BlockDesc::getTypeString() const {
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#ifndef NDEBUG
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void BlockDesc::dump() {
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std::cerr << getDescString() << " "
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<< "Version(" << getVersion() << "), "
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<< "Tag(" << getTag() << "),"
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<< "Context(" << Context << ")\n";
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}
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@ -1205,11 +1216,6 @@ DebugInfoDesc *DIDeserializer::Deserialize(GlobalVariable *GV) {
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// Get the Tag from the global.
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unsigned Tag = DebugInfoDesc::TagFromGlobal(GV);
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// Get the debug version if a compile unit.
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if (Tag == DW_TAG_compile_unit) {
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DebugVersion = CompileUnitDesc::DebugVersionFromGlobal(GV);
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}
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// Create an empty instance of the correct sort.
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Slot = DebugInfoDesc::DescFactory(Tag);
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@ -1366,16 +1372,6 @@ bool DIVerifier::Verify(GlobalVariable *GV) {
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// Check for user defined descriptors.
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if (Tag == DW_TAG_invalid) return true;
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// If a compile unit we need the debug version.
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if (Tag == DW_TAG_compile_unit) {
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DebugVersion = CompileUnitDesc::DebugVersionFromGlobal(GV);
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// FIXME - In the short term, changes are too drastic to continue.
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if (DebugVersion != LLVMDebugVersion) {
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ValiditySlot = Invalid;
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return false;
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}
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}
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// Construct an empty DebugInfoDesc.
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DebugInfoDesc *DD = DebugInfoDesc::DescFactory(Tag);
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