#include "llvm/CodeGen/MachineModuleInfo.h"
#include "llvm/Constants.h"
+#include "llvm/Analysis/ValueTracking.h"
#include "llvm/CodeGen/MachineFunctionPass.h"
#include "llvm/CodeGen/MachineFunction.h"
-#include "llvm/CodeGen/MachineLocation.h"
+#include "llvm/CodeGen/Passes.h"
#include "llvm/Target/TargetInstrInfo.h"
#include "llvm/Target/TargetMachine.h"
#include "llvm/Target/TargetOptions.h"
using namespace llvm::dwarf;
// Handle the Pass registration stuff necessary to use TargetData's.
-namespace {
- RegisterPass<MachineModuleInfo> X("machinemoduleinfo", "Module Information");
-}
+static RegisterPass<MachineModuleInfo>
+X("machinemoduleinfo", "Module Information");
char MachineModuleInfo::ID = 0;
//===----------------------------------------------------------------------===//
/// getGlobalVariablesUsing - Return all of the GlobalVariables that use the
/// named GlobalVariable.
-static std::vector<GlobalVariable*>
-getGlobalVariablesUsing(Module &M, const std::string &RootName) {
- std::vector<GlobalVariable*> Result; // GlobalVariables matching criteria.
-
+static void
+getGlobalVariablesUsing(Module &M, const std::string &RootName,
+ std::vector<GlobalVariable*> &Result) {
std::vector<const Type*> FieldTypes;
FieldTypes.push_back(Type::Int32Ty);
FieldTypes.push_back(Type::Int32Ty);
StructType::get(FieldTypes));
// If present and linkonce then scan for users.
- if (UseRoot && UseRoot->hasLinkOnceLinkage()) {
+ if (UseRoot && UseRoot->hasLinkOnceLinkage())
getGlobalVariablesUsing(UseRoot, Result);
- }
-
- return Result;
}
/// isStringValue - Return true if the given value can be coerced to a string.
//===----------------------------------------------------------------------===//
+static unsigned CountFields(DebugInfoDesc *DD) {
+ unsigned Count = 0;
+
+ switch (DD->getTag()) {
+ case DW_TAG_anchor: // AnchorDesc
+ // Tag
+ // AnchorTag
+ Count = 2;
+ break;
+ case DW_TAG_compile_unit: // CompileUnitDesc
+ // [DW_TAG_anchor]
+ // if (Version == 0) DebugVersion
+ // Language
+ // FileName
+ // Directory
+ // Producer
+ Count = 6;
+
+ // Handle cases out of sync with compiler.
+ if (DD->getVersion() == 0)
+ ++Count;
+
+ break;
+ case DW_TAG_variable: // GlobalVariableDesc
+ // [DW_TAG_anchor]
+ // Context
+ // Name
+ // FullName
+ // LinkageName
+ // File
+ // Line
+ // TyDesc
+ // IsStatic
+ // IsDefinition
+ // Global
+ Count = 12;
+ break;
+ case DW_TAG_subprogram: // SubprogramDesc
+ // [DW_TAG_anchor]
+ // Context
+ // Name
+ // FullName
+ // LinkageName
+ // File
+ // Line
+ // TyDesc
+ // IsStatic
+ // IsDefinition
+ Count = 11;
+ break;
+ case DW_TAG_lexical_block: // BlockDesc
+ // Tag
+ // Context
+ Count = 2;
+ break;
+ case DW_TAG_base_type: // BasicTypeDesc
+ // Tag
+ // Context
+ // Name
+ // File
+ // Line
+ // Size
+ // Align
+ // Offset
+ // if (Version > LLVMDebugVersion4) Flags
+ // Encoding
+ Count = 9;
+
+ if (DD->getVersion() > LLVMDebugVersion4)
+ ++Count;
+
+ break;
+ case DW_TAG_typedef:
+ case DW_TAG_pointer_type:
+ case DW_TAG_reference_type:
+ case DW_TAG_const_type:
+ case DW_TAG_volatile_type:
+ case DW_TAG_restrict_type:
+ case DW_TAG_member:
+ case DW_TAG_inheritance: // DerivedTypeDesc
+ // Tag
+ // Context
+ // Name
+ // File
+ // Line
+ // Size
+ // Align
+ // Offset
+ // if (Version > LLVMDebugVersion4) Flags
+ // FromType
+ Count = 9;
+
+ if (DD->getVersion() > LLVMDebugVersion4)
+ ++Count;
+
+ break;
+ case DW_TAG_array_type:
+ case DW_TAG_structure_type:
+ case DW_TAG_union_type:
+ case DW_TAG_enumeration_type:
+ case DW_TAG_vector_type:
+ case DW_TAG_subroutine_type: // CompositeTypeDesc
+ // Tag
+ // Context
+ // Name
+ // File
+ // Line
+ // Size
+ // Align
+ // Offset
+ // if (Version > LLVMDebugVersion4) Flags
+ // FromType
+ // Elements
+ Count = 10;
+
+ if (DD->getVersion() > LLVMDebugVersion4)
+ ++Count;
+
+ break;
+ case DW_TAG_subrange_type: // SubrangeDesc
+ // Tag
+ // Lo
+ // Hi
+ Count = 3;
+ break;
+ case DW_TAG_enumerator: // EnumeratorDesc
+ // Tag
+ // Name
+ // Value
+ Count = 3;
+ break;
+ case DW_TAG_return_variable:
+ case DW_TAG_arg_variable:
+ case DW_TAG_auto_variable: // VariableDesc
+ // Tag
+ // Context
+ // Name
+ // File
+ // Line
+ // TyDesc
+ Count = 6;
+ break;
+ default:
+ break;
+ }
+
+ return Count;
+}
+
+//===----------------------------------------------------------------------===//
+
/// ApplyToFields - Target the visitor to each field of the debug information
/// descriptor.
void DIVisitor::ApplyToFields(DebugInfoDesc *DD) {
DD->ApplyToFields(this);
}
-//===----------------------------------------------------------------------===//
-/// DICountVisitor - This DIVisitor counts all the fields in the supplied debug
-/// the supplied DebugInfoDesc.
-class DICountVisitor : public DIVisitor {
-private:
- unsigned Count; // Running count of fields.
-
-public:
- DICountVisitor() : DIVisitor(), Count(0) {}
-
- // Accessors.
- unsigned getCount() const { return Count; }
-
- /// Apply - Count each of the fields.
- ///
- virtual void Apply(int &Field) { ++Count; }
- virtual void Apply(unsigned &Field) { ++Count; }
- virtual void Apply(int64_t &Field) { ++Count; }
- virtual void Apply(uint64_t &Field) { ++Count; }
- virtual void Apply(bool &Field) { ++Count; }
- virtual void Apply(std::string &Field) { ++Count; }
- virtual void Apply(DebugInfoDesc *&Field) { ++Count; }
- virtual void Apply(GlobalVariable *&Field) { ++Count; }
- virtual void Apply(std::vector<DebugInfoDesc *> &Field) {
- ++Count;
- }
-};
+namespace {
//===----------------------------------------------------------------------===//
/// DIDeserializeVisitor - This DIVisitor deserializes all the fields in the
public:
DIDeserializeVisitor(DIDeserializer &D, GlobalVariable *GV)
- : DIVisitor()
- , DR(D)
- , I(0)
- , CI(cast<ConstantStruct>(GV->getInitializer()))
+ : DIVisitor(), DR(D), I(0), CI(cast<ConstantStruct>(GV->getInitializer()))
{}
/// Apply - Set the value of each of the fields.
}
virtual void Apply(std::string &Field) {
Constant *C = CI->getOperand(I++);
- Field = C->getStringValue();
+ // Fills in the string if it succeeds
+ if (!GetConstantStringInfo(C, Field))
+ Field.clear();
}
virtual void Apply(DebugInfoDesc *&Field) {
Constant *C = CI->getOperand(I++);
Elements.push_back(ConstantInt::get(Type::Int1Ty, Field));
}
virtual void Apply(std::string &Field) {
- Elements.push_back(SR.getString(Field));
+ Elements.push_back(SR.getString(Field));
}
virtual void Apply(DebugInfoDesc *&Field) {
GlobalVariable *GV = NULL;
}
};
+}
//===----------------------------------------------------------------------===//
/// getAnchorString - Return a string used to label this descriptor's anchor.
///
-const char *CompileUnitDesc::AnchorString = "llvm.dbg.compile_units";
+const char *const CompileUnitDesc::AnchorString = "llvm.dbg.compile_units";
const char *CompileUnitDesc::getAnchorString() const {
return AnchorString;
}
/// getAnchorString - Return a string used to label this descriptor's anchor.
///
-const char *GlobalVariableDesc::AnchorString = "llvm.dbg.global_variables";
+const char *const GlobalVariableDesc::AnchorString = "llvm.dbg.global_variables";
const char *GlobalVariableDesc::getAnchorString() const {
return AnchorString;
}
/// getAnchorString - Return a string used to label this descriptor's anchor.
///
-const char *SubprogramDesc::AnchorString = "llvm.dbg.subprograms";
+const char *const SubprogramDesc::AnchorString = "llvm.dbg.subprograms";
const char *SubprogramDesc::getAnchorString() const {
return AnchorString;
}
///
const PointerType *DISerializer::getEmptyStructPtrType() {
// If not already defined.
- if (!EmptyStructPtrTy) {
- // Construct the empty structure type.
- const StructType *EmptyStructTy =
- StructType::get(std::vector<const Type*>());
- // Construct the pointer to empty structure type.
- EmptyStructPtrTy = PointerType::getUnqual(EmptyStructTy);
- }
-
+ if (EmptyStructPtrTy) return EmptyStructPtrTy;
+
+ // Construct the pointer to empty structure type.
+ const StructType *EmptyStructTy = StructType::get(NULL, NULL);
+
+ // Construct the pointer to empty structure type.
+ EmptyStructPtrTy = PointerType::getUnqual(EmptyStructTy);
return EmptyStructPtrTy;
}
Constant *DISerializer::getString(const std::string &String) {
// Check string cache for previous edition.
Constant *&Slot = StringCache[String];
+
// Return Constant if previously defined.
if (Slot) return Slot;
+
// If empty string then use a sbyte* null instead.
if (String.empty()) {
Slot = ConstantPointerNull::get(getStrPtrType());
} else {
// Construct string as an llvm constant.
Constant *ConstStr = ConstantArray::get(String);
+
// Otherwise create and return a new string global.
GlobalVariable *StrGV = new GlobalVariable(ConstStr->getType(), true,
GlobalVariable::InternalLinkage,
ConstStr, ".str", M);
StrGV->setSection("llvm.metadata");
+
// Convert to generic string pointer.
Slot = ConstantExpr::getBitCast(StrGV, getStrPtrType());
}
+
return Slot;
}
// Add fields.
DISerializeVisitor SRAM(*this, Elements);
SRAM.ApplyToFields(DD);
-
+
// Set the globals initializer.
GV->setInitializer(ConstantStruct::get(Ty, Elements));
// Get the field count.
unsigned &CountSlot = Counts[Tag];
- if (!CountSlot) {
+
+ if (!CountSlot)
// Check the operand count to the field count
- DICountVisitor CTAM;
- CTAM.ApplyToFields(DD);
- CountSlot = CTAM.getCount();
- }
+ CountSlot = CountFields(DD);
// Field count must be at most equal operand count.
if (CountSlot > N) {
//===----------------------------------------------------------------------===//
MachineModuleInfo::MachineModuleInfo()
-: ImmutablePass((intptr_t)&ID)
+: ImmutablePass(&ID)
, DR()
, VR()
, CompileUnits()
}
}
-/// needsFrameInfo - Returns true if we need to gather callee-saved register
-/// move info for the frame.
-bool MachineModuleInfo::needsFrameInfo() const {
- return hasDebugInfo() || ExceptionHandling;
-}
-
/// SetupCompileUnits - Set up the unique vector of compile units.
///
void MachineModuleInfo::SetupCompileUnits(Module &M) {
- std::vector<CompileUnitDesc *>CU = getAnchoredDescriptors<CompileUnitDesc>(M);
+ std::vector<CompileUnitDesc *> CU;
+ getAnchoredDescriptors<CompileUnitDesc>(M, CU);
for (unsigned i = 0, N = CU.size(); i < N; i++) {
CompileUnits.insert(CU[i]);
/// getGlobalVariablesUsing - Return all of the GlobalVariables that use the
/// named GlobalVariable.
-std::vector<GlobalVariable*>
+void
MachineModuleInfo::getGlobalVariablesUsing(Module &M,
- const std::string &RootName) {
- return ::getGlobalVariablesUsing(M, RootName);
+ const std::string &RootName,
+ std::vector<GlobalVariable*>&Result){
+ return ::getGlobalVariablesUsing(M, RootName, Result);
}
/// RecordSourceLine - Records location information and associates it with a
void MachineModuleInfo::addFilterTypeInfo(MachineBasicBlock *LandingPad,
std::vector<GlobalVariable *> &TyInfo) {
LandingPadInfo &LP = getOrCreateLandingPadInfo(LandingPad);
- std::vector<unsigned> IdsInFilter (TyInfo.size());
+ std::vector<unsigned> IdsInFilter(TyInfo.size());
for (unsigned I = 0, E = TyInfo.size(); I != E; ++I)
IdsInFilter[I] = getTypeIDFor(TyInfo[I]);
LP.TypeIds.push_back(getFilterIDFor(IdsInFilter));
struct DebugLabelFolder : public MachineFunctionPass {
static char ID;
- DebugLabelFolder() : MachineFunctionPass((intptr_t)&ID) {}
+ DebugLabelFolder() : MachineFunctionPass(&ID) {}
+
+ virtual void getAnalysisUsage(AnalysisUsage &AU) const {
+ AU.addPreservedID(MachineLoopInfoID);
+ AU.addPreservedID(MachineDominatorsID);
+ MachineFunctionPass::getAnalysisUsage(AU);
+ }
virtual bool runOnMachineFunction(MachineFunction &MF);
virtual const char *getPassName() const { return "Label Folder"; }
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