mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-11-09 10:05:41 +00:00
a0a7ad427a
This reverts commit r214761. Revert while Reid investigates & provides a reproduction for an assertion failure for this on Windows. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@214999 91177308-0d34-0410-b5e6-96231b3b80d8
1586 lines
48 KiB
C++
1586 lines
48 KiB
C++
//===--- DebugInfo.cpp - Debug Information Helper Classes -----------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file implements the helper classes used to build and interpret debug
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// information in LLVM IR form.
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/IR/DebugInfo.h"
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#include "LLVMContextImpl.h"
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#include "llvm/ADT/STLExtras.h"
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#include "llvm/ADT/SmallPtrSet.h"
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#include "llvm/ADT/SmallString.h"
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#include "llvm/Analysis/ValueTracking.h"
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#include "llvm/IR/Constants.h"
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#include "llvm/IR/DIBuilder.h"
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#include "llvm/IR/DerivedTypes.h"
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#include "llvm/IR/Instructions.h"
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#include "llvm/IR/IntrinsicInst.h"
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#include "llvm/IR/Intrinsics.h"
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#include "llvm/IR/Module.h"
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#include "llvm/IR/ValueHandle.h"
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#include "llvm/Support/Debug.h"
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#include "llvm/Support/Dwarf.h"
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#include "llvm/Support/raw_ostream.h"
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using namespace llvm;
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using namespace llvm::dwarf;
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//===----------------------------------------------------------------------===//
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// DIDescriptor
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//===----------------------------------------------------------------------===//
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bool DIDescriptor::Verify() const {
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return DbgNode &&
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(DIDerivedType(DbgNode).Verify() ||
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DICompositeType(DbgNode).Verify() || DIBasicType(DbgNode).Verify() ||
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DIVariable(DbgNode).Verify() || DISubprogram(DbgNode).Verify() ||
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DIGlobalVariable(DbgNode).Verify() || DIFile(DbgNode).Verify() ||
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DICompileUnit(DbgNode).Verify() || DINameSpace(DbgNode).Verify() ||
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DILexicalBlock(DbgNode).Verify() ||
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DILexicalBlockFile(DbgNode).Verify() ||
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DISubrange(DbgNode).Verify() || DIEnumerator(DbgNode).Verify() ||
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DIObjCProperty(DbgNode).Verify() ||
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DITemplateTypeParameter(DbgNode).Verify() ||
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DITemplateValueParameter(DbgNode).Verify() ||
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DIImportedEntity(DbgNode).Verify());
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}
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static Value *getField(const MDNode *DbgNode, unsigned Elt) {
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if (!DbgNode || Elt >= DbgNode->getNumOperands())
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return nullptr;
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return DbgNode->getOperand(Elt);
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}
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static MDNode *getNodeField(const MDNode *DbgNode, unsigned Elt) {
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return dyn_cast_or_null<MDNode>(getField(DbgNode, Elt));
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}
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static StringRef getStringField(const MDNode *DbgNode, unsigned Elt) {
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if (MDString *MDS = dyn_cast_or_null<MDString>(getField(DbgNode, Elt)))
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return MDS->getString();
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return StringRef();
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}
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StringRef DIDescriptor::getStringField(unsigned Elt) const {
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return ::getStringField(DbgNode, Elt);
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}
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uint64_t DIDescriptor::getUInt64Field(unsigned Elt) const {
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if (!DbgNode)
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return 0;
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if (Elt < DbgNode->getNumOperands())
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if (ConstantInt *CI =
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dyn_cast_or_null<ConstantInt>(DbgNode->getOperand(Elt)))
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return CI->getZExtValue();
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return 0;
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}
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int64_t DIDescriptor::getInt64Field(unsigned Elt) const {
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if (!DbgNode)
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return 0;
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if (Elt < DbgNode->getNumOperands())
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if (ConstantInt *CI =
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dyn_cast_or_null<ConstantInt>(DbgNode->getOperand(Elt)))
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return CI->getSExtValue();
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return 0;
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}
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DIDescriptor DIDescriptor::getDescriptorField(unsigned Elt) const {
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MDNode *Field = getNodeField(DbgNode, Elt);
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return DIDescriptor(Field);
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}
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GlobalVariable *DIDescriptor::getGlobalVariableField(unsigned Elt) const {
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if (!DbgNode)
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return nullptr;
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if (Elt < DbgNode->getNumOperands())
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return dyn_cast_or_null<GlobalVariable>(DbgNode->getOperand(Elt));
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return nullptr;
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}
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Constant *DIDescriptor::getConstantField(unsigned Elt) const {
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if (!DbgNode)
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return nullptr;
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if (Elt < DbgNode->getNumOperands())
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return dyn_cast_or_null<Constant>(DbgNode->getOperand(Elt));
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return nullptr;
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}
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Function *DIDescriptor::getFunctionField(unsigned Elt) const {
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if (!DbgNode)
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return nullptr;
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if (Elt < DbgNode->getNumOperands())
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return dyn_cast_or_null<Function>(DbgNode->getOperand(Elt));
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return nullptr;
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}
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void DIDescriptor::replaceFunctionField(unsigned Elt, Function *F) {
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if (!DbgNode)
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return;
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if (Elt < DbgNode->getNumOperands()) {
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MDNode *Node = const_cast<MDNode *>(DbgNode);
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Node->replaceOperandWith(Elt, F);
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}
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}
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uint64_t DIVariable::getAddrElement(unsigned Idx) const {
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DIDescriptor ComplexExpr = getDescriptorField(8);
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if (Idx < ComplexExpr->getNumOperands())
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if (auto *CI = dyn_cast_or_null<ConstantInt>(ComplexExpr->getOperand(Idx)))
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return CI->getZExtValue();
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assert(false && "non-existing complex address element requested");
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return 0;
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}
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/// getInlinedAt - If this variable is inlined then return inline location.
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MDNode *DIVariable::getInlinedAt() const { return getNodeField(DbgNode, 7); }
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bool DIVariable::isVariablePiece() const {
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return hasComplexAddress() && getAddrElement(0) == DIBuilder::OpPiece;
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}
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uint64_t DIVariable::getPieceOffset() const {
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assert(isVariablePiece());
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return getAddrElement(1);
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}
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uint64_t DIVariable::getPieceSize() const {
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assert(isVariablePiece());
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return getAddrElement(2);
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}
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/// Return the size reported by the variable's type.
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unsigned DIVariable::getSizeInBits(const DITypeIdentifierMap &Map) {
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DIType Ty = getType().resolve(Map);
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// Follow derived types until we reach a type that
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// reports back a size.
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while (Ty.isDerivedType() && !Ty.getSizeInBits()) {
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DIDerivedType DT(&*Ty);
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Ty = DT.getTypeDerivedFrom().resolve(Map);
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}
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assert(Ty.getSizeInBits() && "type with size 0");
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return Ty.getSizeInBits();
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}
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//===----------------------------------------------------------------------===//
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// Predicates
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//===----------------------------------------------------------------------===//
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bool DIDescriptor::isSubroutineType() const {
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return isCompositeType() && getTag() == dwarf::DW_TAG_subroutine_type;
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}
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/// isBasicType - Return true if the specified tag is legal for
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/// DIBasicType.
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bool DIDescriptor::isBasicType() const {
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if (!DbgNode)
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return false;
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switch (getTag()) {
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case dwarf::DW_TAG_base_type:
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case dwarf::DW_TAG_unspecified_type:
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return true;
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default:
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return false;
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}
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}
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/// isDerivedType - Return true if the specified tag is legal for DIDerivedType.
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bool DIDescriptor::isDerivedType() const {
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if (!DbgNode)
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return false;
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switch (getTag()) {
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case dwarf::DW_TAG_typedef:
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case dwarf::DW_TAG_pointer_type:
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case dwarf::DW_TAG_ptr_to_member_type:
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case dwarf::DW_TAG_reference_type:
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case dwarf::DW_TAG_rvalue_reference_type:
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case dwarf::DW_TAG_const_type:
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case dwarf::DW_TAG_volatile_type:
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case dwarf::DW_TAG_restrict_type:
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case dwarf::DW_TAG_member:
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case dwarf::DW_TAG_inheritance:
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case dwarf::DW_TAG_friend:
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return true;
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default:
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// CompositeTypes are currently modelled as DerivedTypes.
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return isCompositeType();
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}
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}
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/// isCompositeType - Return true if the specified tag is legal for
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/// DICompositeType.
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bool DIDescriptor::isCompositeType() const {
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if (!DbgNode)
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return false;
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switch (getTag()) {
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case dwarf::DW_TAG_array_type:
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case dwarf::DW_TAG_structure_type:
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case dwarf::DW_TAG_union_type:
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case dwarf::DW_TAG_enumeration_type:
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case dwarf::DW_TAG_subroutine_type:
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case dwarf::DW_TAG_class_type:
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return true;
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default:
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return false;
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}
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}
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/// isVariable - Return true if the specified tag is legal for DIVariable.
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bool DIDescriptor::isVariable() const {
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if (!DbgNode)
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return false;
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switch (getTag()) {
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case dwarf::DW_TAG_auto_variable:
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case dwarf::DW_TAG_arg_variable:
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return true;
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default:
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return false;
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}
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}
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/// isType - Return true if the specified tag is legal for DIType.
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bool DIDescriptor::isType() const {
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return isBasicType() || isCompositeType() || isDerivedType();
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}
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/// isSubprogram - Return true if the specified tag is legal for
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/// DISubprogram.
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bool DIDescriptor::isSubprogram() const {
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return DbgNode && getTag() == dwarf::DW_TAG_subprogram;
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}
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/// isGlobalVariable - Return true if the specified tag is legal for
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/// DIGlobalVariable.
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bool DIDescriptor::isGlobalVariable() const {
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return DbgNode && (getTag() == dwarf::DW_TAG_variable ||
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getTag() == dwarf::DW_TAG_constant);
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}
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/// isScope - Return true if the specified tag is one of the scope
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/// related tag.
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bool DIDescriptor::isScope() const {
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if (!DbgNode)
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return false;
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switch (getTag()) {
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case dwarf::DW_TAG_compile_unit:
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case dwarf::DW_TAG_lexical_block:
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case dwarf::DW_TAG_subprogram:
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case dwarf::DW_TAG_namespace:
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case dwarf::DW_TAG_file_type:
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return true;
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default:
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break;
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}
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return isType();
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}
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/// isTemplateTypeParameter - Return true if the specified tag is
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/// DW_TAG_template_type_parameter.
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bool DIDescriptor::isTemplateTypeParameter() const {
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return DbgNode && getTag() == dwarf::DW_TAG_template_type_parameter;
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}
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/// isTemplateValueParameter - Return true if the specified tag is
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/// DW_TAG_template_value_parameter.
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bool DIDescriptor::isTemplateValueParameter() const {
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return DbgNode && (getTag() == dwarf::DW_TAG_template_value_parameter ||
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getTag() == dwarf::DW_TAG_GNU_template_template_param ||
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getTag() == dwarf::DW_TAG_GNU_template_parameter_pack);
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}
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/// isCompileUnit - Return true if the specified tag is DW_TAG_compile_unit.
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bool DIDescriptor::isCompileUnit() const {
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return DbgNode && getTag() == dwarf::DW_TAG_compile_unit;
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}
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/// isFile - Return true if the specified tag is DW_TAG_file_type.
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bool DIDescriptor::isFile() const {
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return DbgNode && getTag() == dwarf::DW_TAG_file_type;
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}
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/// isNameSpace - Return true if the specified tag is DW_TAG_namespace.
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bool DIDescriptor::isNameSpace() const {
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return DbgNode && getTag() == dwarf::DW_TAG_namespace;
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}
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/// isLexicalBlockFile - Return true if the specified descriptor is a
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/// lexical block with an extra file.
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bool DIDescriptor::isLexicalBlockFile() const {
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return DbgNode && getTag() == dwarf::DW_TAG_lexical_block &&
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(DbgNode->getNumOperands() == 3);
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}
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/// isLexicalBlock - Return true if the specified tag is DW_TAG_lexical_block.
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bool DIDescriptor::isLexicalBlock() const {
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return DbgNode && getTag() == dwarf::DW_TAG_lexical_block &&
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(DbgNode->getNumOperands() > 3);
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}
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/// isSubrange - Return true if the specified tag is DW_TAG_subrange_type.
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bool DIDescriptor::isSubrange() const {
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return DbgNode && getTag() == dwarf::DW_TAG_subrange_type;
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}
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/// isEnumerator - Return true if the specified tag is DW_TAG_enumerator.
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bool DIDescriptor::isEnumerator() const {
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return DbgNode && getTag() == dwarf::DW_TAG_enumerator;
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}
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/// isObjCProperty - Return true if the specified tag is DW_TAG_APPLE_property.
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bool DIDescriptor::isObjCProperty() const {
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return DbgNode && getTag() == dwarf::DW_TAG_APPLE_property;
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}
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/// \brief Return true if the specified tag is DW_TAG_imported_module or
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/// DW_TAG_imported_declaration.
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bool DIDescriptor::isImportedEntity() const {
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return DbgNode && (getTag() == dwarf::DW_TAG_imported_module ||
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getTag() == dwarf::DW_TAG_imported_declaration);
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}
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//===----------------------------------------------------------------------===//
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// Simple Descriptor Constructors and other Methods
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//===----------------------------------------------------------------------===//
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/// replaceAllUsesWith - Replace all uses of the MDNode used by this
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/// type with the one in the passed descriptor.
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void DIType::replaceAllUsesWith(LLVMContext &VMContext, DIDescriptor D) {
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assert(DbgNode && "Trying to replace an unverified type!");
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// Since we use a TrackingVH for the node, its easy for clients to manufacture
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// legitimate situations where they want to replaceAllUsesWith() on something
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// which, due to uniquing, has merged with the source. We shield clients from
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// this detail by allowing a value to be replaced with replaceAllUsesWith()
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// itself.
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const MDNode *DN = D;
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if (DbgNode == DN) {
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SmallVector<Value*, 10> Ops(DbgNode->getNumOperands());
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for (size_t i = 0; i != Ops.size(); ++i)
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Ops[i] = DbgNode->getOperand(i);
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DN = MDNode::get(VMContext, Ops);
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}
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MDNode *Node = const_cast<MDNode *>(DbgNode);
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const Value *V = cast_or_null<Value>(DN);
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Node->replaceAllUsesWith(const_cast<Value *>(V));
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MDNode::deleteTemporary(Node);
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DbgNode = D;
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}
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/// replaceAllUsesWith - Replace all uses of the MDNode used by this
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/// type with the one in D.
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void DIType::replaceAllUsesWith(MDNode *D) {
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assert(DbgNode && "Trying to replace an unverified type!");
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assert(DbgNode != D && "This replacement should always happen");
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MDNode *Node = const_cast<MDNode *>(DbgNode);
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const MDNode *DN = D;
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const Value *V = cast_or_null<Value>(DN);
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Node->replaceAllUsesWith(const_cast<Value *>(V));
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MDNode::deleteTemporary(Node);
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}
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/// Verify - Verify that a compile unit is well formed.
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bool DICompileUnit::Verify() const {
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if (!isCompileUnit())
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return false;
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// Don't bother verifying the compilation directory or producer string
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// as those could be empty.
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if (getFilename().empty())
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return false;
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return DbgNode->getNumOperands() == 14;
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}
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/// Verify - Verify that an ObjC property is well formed.
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bool DIObjCProperty::Verify() const {
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if (!isObjCProperty())
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return false;
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// Don't worry about the rest of the strings for now.
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return DbgNode->getNumOperands() == 8;
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}
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/// Check if a field at position Elt of a MDNode is a MDNode.
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/// We currently allow an empty string and an integer.
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/// But we don't allow a non-empty string in a MDNode field.
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static bool fieldIsMDNode(const MDNode *DbgNode, unsigned Elt) {
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// FIXME: This function should return true, if the field is null or the field
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// is indeed a MDNode: return !Fld || isa<MDNode>(Fld).
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Value *Fld = getField(DbgNode, Elt);
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if (Fld && isa<MDString>(Fld) && !cast<MDString>(Fld)->getString().empty())
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return false;
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return true;
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}
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/// Check if a field at position Elt of a MDNode is a MDString.
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static bool fieldIsMDString(const MDNode *DbgNode, unsigned Elt) {
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Value *Fld = getField(DbgNode, Elt);
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return !Fld || isa<MDString>(Fld);
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}
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/// Check if a value can be a reference to a type.
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static bool isTypeRef(const Value *Val) {
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return !Val ||
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(isa<MDString>(Val) && !cast<MDString>(Val)->getString().empty()) ||
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(isa<MDNode>(Val) && DIType(cast<MDNode>(Val)).isType());
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}
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/// Check if a field at position Elt of a MDNode can be a reference to a type.
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static bool fieldIsTypeRef(const MDNode *DbgNode, unsigned Elt) {
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Value *Fld = getField(DbgNode, Elt);
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return isTypeRef(Fld);
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}
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/// Check if a value can be a ScopeRef.
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static bool isScopeRef(const Value *Val) {
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return !Val ||
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(isa<MDString>(Val) && !cast<MDString>(Val)->getString().empty()) ||
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// Not checking for Val->isScope() here, because it would work
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// only for lexical scopes and not all subclasses of DIScope.
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isa<MDNode>(Val);
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}
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/// Check if a field at position Elt of a MDNode can be a ScopeRef.
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static bool fieldIsScopeRef(const MDNode *DbgNode, unsigned Elt) {
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Value *Fld = getField(DbgNode, Elt);
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return isScopeRef(Fld);
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}
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/// Verify - Verify that a type descriptor is well formed.
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bool DIType::Verify() const {
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if (!isType())
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return false;
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// Make sure Context @ field 2 is MDNode.
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if (!fieldIsScopeRef(DbgNode, 2))
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return false;
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// FIXME: Sink this into the various subclass verifies.
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uint16_t Tag = getTag();
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if (!isBasicType() && Tag != dwarf::DW_TAG_const_type &&
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Tag != dwarf::DW_TAG_volatile_type && Tag != dwarf::DW_TAG_pointer_type &&
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Tag != dwarf::DW_TAG_ptr_to_member_type &&
|
|
Tag != dwarf::DW_TAG_reference_type &&
|
|
Tag != dwarf::DW_TAG_rvalue_reference_type &&
|
|
Tag != dwarf::DW_TAG_restrict_type && Tag != dwarf::DW_TAG_array_type &&
|
|
Tag != dwarf::DW_TAG_enumeration_type &&
|
|
Tag != dwarf::DW_TAG_subroutine_type &&
|
|
Tag != dwarf::DW_TAG_inheritance && Tag != dwarf::DW_TAG_friend &&
|
|
getFilename().empty())
|
|
return false;
|
|
// DIType is abstract, it should be a BasicType, a DerivedType or
|
|
// a CompositeType.
|
|
if (isBasicType())
|
|
return DIBasicType(DbgNode).Verify();
|
|
else if (isCompositeType())
|
|
return DICompositeType(DbgNode).Verify();
|
|
else if (isDerivedType())
|
|
return DIDerivedType(DbgNode).Verify();
|
|
else
|
|
return false;
|
|
}
|
|
|
|
/// Verify - Verify that a basic type descriptor is well formed.
|
|
bool DIBasicType::Verify() const {
|
|
return isBasicType() && DbgNode->getNumOperands() == 10;
|
|
}
|
|
|
|
/// Verify - Verify that a derived type descriptor is well formed.
|
|
bool DIDerivedType::Verify() const {
|
|
// Make sure DerivedFrom @ field 9 is TypeRef.
|
|
if (!fieldIsTypeRef(DbgNode, 9))
|
|
return false;
|
|
if (getTag() == dwarf::DW_TAG_ptr_to_member_type)
|
|
// Make sure ClassType @ field 10 is a TypeRef.
|
|
if (!fieldIsTypeRef(DbgNode, 10))
|
|
return false;
|
|
|
|
return isDerivedType() && DbgNode->getNumOperands() >= 10 &&
|
|
DbgNode->getNumOperands() <= 14;
|
|
}
|
|
|
|
/// Verify - Verify that a composite type descriptor is well formed.
|
|
bool DICompositeType::Verify() const {
|
|
if (!isCompositeType())
|
|
return false;
|
|
|
|
// Make sure DerivedFrom @ field 9 and ContainingType @ field 12 are TypeRef.
|
|
if (!fieldIsTypeRef(DbgNode, 9))
|
|
return false;
|
|
if (!fieldIsTypeRef(DbgNode, 12))
|
|
return false;
|
|
|
|
// Make sure the type identifier at field 14 is MDString, it can be null.
|
|
if (!fieldIsMDString(DbgNode, 14))
|
|
return false;
|
|
|
|
// A subroutine type can't be both & and &&.
|
|
if (isLValueReference() && isRValueReference())
|
|
return false;
|
|
|
|
return DbgNode->getNumOperands() == 15;
|
|
}
|
|
|
|
/// Verify - Verify that a subprogram descriptor is well formed.
|
|
bool DISubprogram::Verify() const {
|
|
if (!isSubprogram())
|
|
return false;
|
|
|
|
// Make sure context @ field 2 is a ScopeRef and type @ field 7 is a MDNode.
|
|
if (!fieldIsScopeRef(DbgNode, 2))
|
|
return false;
|
|
if (!fieldIsMDNode(DbgNode, 7))
|
|
return false;
|
|
// Containing type @ field 12.
|
|
if (!fieldIsTypeRef(DbgNode, 12))
|
|
return false;
|
|
|
|
// A subprogram can't be both & and &&.
|
|
if (isLValueReference() && isRValueReference())
|
|
return false;
|
|
|
|
return DbgNode->getNumOperands() == 20;
|
|
}
|
|
|
|
/// Verify - Verify that a global variable descriptor is well formed.
|
|
bool DIGlobalVariable::Verify() const {
|
|
if (!isGlobalVariable())
|
|
return false;
|
|
|
|
if (getDisplayName().empty())
|
|
return false;
|
|
// Make sure context @ field 2 is an MDNode.
|
|
if (!fieldIsMDNode(DbgNode, 2))
|
|
return false;
|
|
// Make sure that type @ field 8 is a DITypeRef.
|
|
if (!fieldIsTypeRef(DbgNode, 8))
|
|
return false;
|
|
// Make sure StaticDataMemberDeclaration @ field 12 is MDNode.
|
|
if (!fieldIsMDNode(DbgNode, 12))
|
|
return false;
|
|
|
|
return DbgNode->getNumOperands() == 13;
|
|
}
|
|
|
|
/// Verify - Verify that a variable descriptor is well formed.
|
|
bool DIVariable::Verify() const {
|
|
if (!isVariable())
|
|
return false;
|
|
|
|
// Make sure context @ field 1 is an MDNode.
|
|
if (!fieldIsMDNode(DbgNode, 1))
|
|
return false;
|
|
// Make sure that type @ field 5 is a DITypeRef.
|
|
if (!fieldIsTypeRef(DbgNode, 5))
|
|
return false;
|
|
|
|
// Variable without a complex expression.
|
|
if (DbgNode->getNumOperands() == 8)
|
|
return true;
|
|
|
|
// Make sure the complex expression is an MDNode.
|
|
return (DbgNode->getNumOperands() == 9 && fieldIsMDNode(DbgNode, 8));
|
|
}
|
|
|
|
/// Verify - Verify that a location descriptor is well formed.
|
|
bool DILocation::Verify() const {
|
|
if (!DbgNode)
|
|
return false;
|
|
|
|
return DbgNode->getNumOperands() == 4;
|
|
}
|
|
|
|
/// Verify - Verify that a namespace descriptor is well formed.
|
|
bool DINameSpace::Verify() const {
|
|
if (!isNameSpace())
|
|
return false;
|
|
return DbgNode->getNumOperands() == 5;
|
|
}
|
|
|
|
/// \brief Retrieve the MDNode for the directory/file pair.
|
|
MDNode *DIFile::getFileNode() const { return getNodeField(DbgNode, 1); }
|
|
|
|
/// \brief Verify that the file descriptor is well formed.
|
|
bool DIFile::Verify() const {
|
|
return isFile() && DbgNode->getNumOperands() == 2;
|
|
}
|
|
|
|
/// \brief Verify that the enumerator descriptor is well formed.
|
|
bool DIEnumerator::Verify() const {
|
|
return isEnumerator() && DbgNode->getNumOperands() == 3;
|
|
}
|
|
|
|
/// \brief Verify that the subrange descriptor is well formed.
|
|
bool DISubrange::Verify() const {
|
|
return isSubrange() && DbgNode->getNumOperands() == 3;
|
|
}
|
|
|
|
/// \brief Verify that the lexical block descriptor is well formed.
|
|
bool DILexicalBlock::Verify() const {
|
|
return isLexicalBlock() && DbgNode->getNumOperands() == 7;
|
|
}
|
|
|
|
/// \brief Verify that the file-scoped lexical block descriptor is well formed.
|
|
bool DILexicalBlockFile::Verify() const {
|
|
return isLexicalBlockFile() && DbgNode->getNumOperands() == 3;
|
|
}
|
|
|
|
/// \brief Verify that the template type parameter descriptor is well formed.
|
|
bool DITemplateTypeParameter::Verify() const {
|
|
return isTemplateTypeParameter() && DbgNode->getNumOperands() == 7;
|
|
}
|
|
|
|
/// \brief Verify that the template value parameter descriptor is well formed.
|
|
bool DITemplateValueParameter::Verify() const {
|
|
return isTemplateValueParameter() && DbgNode->getNumOperands() == 8;
|
|
}
|
|
|
|
/// \brief Verify that the imported module descriptor is well formed.
|
|
bool DIImportedEntity::Verify() const {
|
|
return isImportedEntity() &&
|
|
(DbgNode->getNumOperands() == 4 || DbgNode->getNumOperands() == 5);
|
|
}
|
|
|
|
/// getObjCProperty - Return property node, if this ivar is associated with one.
|
|
MDNode *DIDerivedType::getObjCProperty() const {
|
|
return getNodeField(DbgNode, 10);
|
|
}
|
|
|
|
MDString *DICompositeType::getIdentifier() const {
|
|
return cast_or_null<MDString>(getField(DbgNode, 14));
|
|
}
|
|
|
|
#ifndef NDEBUG
|
|
static void VerifySubsetOf(const MDNode *LHS, const MDNode *RHS) {
|
|
for (unsigned i = 0; i != LHS->getNumOperands(); ++i) {
|
|
// Skip the 'empty' list (that's a single i32 0, rather than truly empty).
|
|
if (i == 0 && isa<ConstantInt>(LHS->getOperand(i)))
|
|
continue;
|
|
const MDNode *E = cast<MDNode>(LHS->getOperand(i));
|
|
bool found = false;
|
|
for (unsigned j = 0; !found && j != RHS->getNumOperands(); ++j)
|
|
found = E == RHS->getOperand(j);
|
|
assert(found && "Losing a member during member list replacement");
|
|
}
|
|
}
|
|
#endif
|
|
|
|
/// \brief Set the array of member DITypes.
|
|
void DICompositeType::setArraysHelper(MDNode *Elements, MDNode *TParams) {
|
|
TrackingVH<MDNode> N(*this);
|
|
if (Elements) {
|
|
#ifndef NDEBUG
|
|
// Check that the new list of members contains all the old members as well.
|
|
if (const MDNode *El = cast_or_null<MDNode>(N->getOperand(10)))
|
|
VerifySubsetOf(El, Elements);
|
|
#endif
|
|
N->replaceOperandWith(10, Elements);
|
|
}
|
|
if (TParams)
|
|
N->replaceOperandWith(13, TParams);
|
|
DbgNode = N;
|
|
}
|
|
|
|
/// Generate a reference to this DIType. Uses the type identifier instead
|
|
/// of the actual MDNode if possible, to help type uniquing.
|
|
DIScopeRef DIScope::getRef() const {
|
|
if (!isCompositeType())
|
|
return DIScopeRef(*this);
|
|
DICompositeType DTy(DbgNode);
|
|
if (!DTy.getIdentifier())
|
|
return DIScopeRef(*this);
|
|
return DIScopeRef(DTy.getIdentifier());
|
|
}
|
|
|
|
/// \brief Set the containing type.
|
|
void DICompositeType::setContainingType(DICompositeType ContainingType) {
|
|
TrackingVH<MDNode> N(*this);
|
|
N->replaceOperandWith(12, ContainingType.getRef());
|
|
DbgNode = N;
|
|
}
|
|
|
|
/// isInlinedFnArgument - Return true if this variable provides debugging
|
|
/// information for an inlined function arguments.
|
|
bool DIVariable::isInlinedFnArgument(const Function *CurFn) {
|
|
assert(CurFn && "Invalid function");
|
|
if (!getContext().isSubprogram())
|
|
return false;
|
|
// This variable is not inlined function argument if its scope
|
|
// does not describe current function.
|
|
return !DISubprogram(getContext()).describes(CurFn);
|
|
}
|
|
|
|
/// describes - Return true if this subprogram provides debugging
|
|
/// information for the function F.
|
|
bool DISubprogram::describes(const Function *F) {
|
|
assert(F && "Invalid function");
|
|
if (F == getFunction())
|
|
return true;
|
|
StringRef Name = getLinkageName();
|
|
if (Name.empty())
|
|
Name = getName();
|
|
if (F->getName() == Name)
|
|
return true;
|
|
return false;
|
|
}
|
|
|
|
unsigned DISubprogram::isOptimized() const {
|
|
assert(DbgNode && "Invalid subprogram descriptor!");
|
|
if (DbgNode->getNumOperands() == 15)
|
|
return getUnsignedField(14);
|
|
return 0;
|
|
}
|
|
|
|
MDNode *DISubprogram::getVariablesNodes() const {
|
|
return getNodeField(DbgNode, 18);
|
|
}
|
|
|
|
DIArray DISubprogram::getVariables() const {
|
|
return DIArray(getNodeField(DbgNode, 18));
|
|
}
|
|
|
|
Value *DITemplateValueParameter::getValue() const {
|
|
return getField(DbgNode, 4);
|
|
}
|
|
|
|
// If the current node has a parent scope then return that,
|
|
// else return an empty scope.
|
|
DIScopeRef DIScope::getContext() const {
|
|
|
|
if (isType())
|
|
return DIType(DbgNode).getContext();
|
|
|
|
if (isSubprogram())
|
|
return DIScopeRef(DISubprogram(DbgNode).getContext());
|
|
|
|
if (isLexicalBlock())
|
|
return DIScopeRef(DILexicalBlock(DbgNode).getContext());
|
|
|
|
if (isLexicalBlockFile())
|
|
return DIScopeRef(DILexicalBlockFile(DbgNode).getContext());
|
|
|
|
if (isNameSpace())
|
|
return DIScopeRef(DINameSpace(DbgNode).getContext());
|
|
|
|
assert((isFile() || isCompileUnit()) && "Unhandled type of scope.");
|
|
return DIScopeRef(nullptr);
|
|
}
|
|
|
|
// If the scope node has a name, return that, else return an empty string.
|
|
StringRef DIScope::getName() const {
|
|
if (isType())
|
|
return DIType(DbgNode).getName();
|
|
if (isSubprogram())
|
|
return DISubprogram(DbgNode).getName();
|
|
if (isNameSpace())
|
|
return DINameSpace(DbgNode).getName();
|
|
assert((isLexicalBlock() || isLexicalBlockFile() || isFile() ||
|
|
isCompileUnit()) &&
|
|
"Unhandled type of scope.");
|
|
return StringRef();
|
|
}
|
|
|
|
StringRef DIScope::getFilename() const {
|
|
if (!DbgNode)
|
|
return StringRef();
|
|
return ::getStringField(getNodeField(DbgNode, 1), 0);
|
|
}
|
|
|
|
StringRef DIScope::getDirectory() const {
|
|
if (!DbgNode)
|
|
return StringRef();
|
|
return ::getStringField(getNodeField(DbgNode, 1), 1);
|
|
}
|
|
|
|
DIArray DICompileUnit::getEnumTypes() const {
|
|
if (!DbgNode || DbgNode->getNumOperands() < 13)
|
|
return DIArray();
|
|
|
|
return DIArray(getNodeField(DbgNode, 7));
|
|
}
|
|
|
|
DIArray DICompileUnit::getRetainedTypes() const {
|
|
if (!DbgNode || DbgNode->getNumOperands() < 13)
|
|
return DIArray();
|
|
|
|
return DIArray(getNodeField(DbgNode, 8));
|
|
}
|
|
|
|
DIArray DICompileUnit::getSubprograms() const {
|
|
if (!DbgNode || DbgNode->getNumOperands() < 13)
|
|
return DIArray();
|
|
|
|
return DIArray(getNodeField(DbgNode, 9));
|
|
}
|
|
|
|
DIArray DICompileUnit::getGlobalVariables() const {
|
|
if (!DbgNode || DbgNode->getNumOperands() < 13)
|
|
return DIArray();
|
|
|
|
return DIArray(getNodeField(DbgNode, 10));
|
|
}
|
|
|
|
DIArray DICompileUnit::getImportedEntities() const {
|
|
if (!DbgNode || DbgNode->getNumOperands() < 13)
|
|
return DIArray();
|
|
|
|
return DIArray(getNodeField(DbgNode, 11));
|
|
}
|
|
|
|
/// copyWithNewScope - Return a copy of this location, replacing the
|
|
/// current scope with the given one.
|
|
DILocation DILocation::copyWithNewScope(LLVMContext &Ctx,
|
|
DILexicalBlock NewScope) {
|
|
SmallVector<Value *, 10> Elts;
|
|
assert(Verify());
|
|
for (unsigned I = 0; I < DbgNode->getNumOperands(); ++I) {
|
|
if (I != 2)
|
|
Elts.push_back(DbgNode->getOperand(I));
|
|
else
|
|
Elts.push_back(NewScope);
|
|
}
|
|
MDNode *NewDIL = MDNode::get(Ctx, Elts);
|
|
return DILocation(NewDIL);
|
|
}
|
|
|
|
/// computeNewDiscriminator - Generate a new discriminator value for this
|
|
/// file and line location.
|
|
unsigned DILocation::computeNewDiscriminator(LLVMContext &Ctx) {
|
|
std::pair<const char *, unsigned> Key(getFilename().data(), getLineNumber());
|
|
return ++Ctx.pImpl->DiscriminatorTable[Key];
|
|
}
|
|
|
|
/// fixupSubprogramName - Replace contains special characters used
|
|
/// in a typical Objective-C names with '.' in a given string.
|
|
static void fixupSubprogramName(DISubprogram Fn, SmallVectorImpl<char> &Out) {
|
|
StringRef FName =
|
|
Fn.getFunction() ? Fn.getFunction()->getName() : Fn.getName();
|
|
FName = Function::getRealLinkageName(FName);
|
|
|
|
StringRef Prefix("llvm.dbg.lv.");
|
|
Out.reserve(FName.size() + Prefix.size());
|
|
Out.append(Prefix.begin(), Prefix.end());
|
|
|
|
bool isObjCLike = false;
|
|
for (size_t i = 0, e = FName.size(); i < e; ++i) {
|
|
char C = FName[i];
|
|
if (C == '[')
|
|
isObjCLike = true;
|
|
|
|
if (isObjCLike && (C == '[' || C == ']' || C == ' ' || C == ':' ||
|
|
C == '+' || C == '(' || C == ')'))
|
|
Out.push_back('.');
|
|
else
|
|
Out.push_back(C);
|
|
}
|
|
}
|
|
|
|
/// getFnSpecificMDNode - Return a NameMDNode, if available, that is
|
|
/// suitable to hold function specific information.
|
|
NamedMDNode *llvm::getFnSpecificMDNode(const Module &M, DISubprogram Fn) {
|
|
SmallString<32> Name;
|
|
fixupSubprogramName(Fn, Name);
|
|
return M.getNamedMetadata(Name.str());
|
|
}
|
|
|
|
/// getOrInsertFnSpecificMDNode - Return a NameMDNode that is suitable
|
|
/// to hold function specific information.
|
|
NamedMDNode *llvm::getOrInsertFnSpecificMDNode(Module &M, DISubprogram Fn) {
|
|
SmallString<32> Name;
|
|
fixupSubprogramName(Fn, Name);
|
|
return M.getOrInsertNamedMetadata(Name.str());
|
|
}
|
|
|
|
/// createInlinedVariable - Create a new inlined variable based on current
|
|
/// variable.
|
|
/// @param DV Current Variable.
|
|
/// @param InlinedScope Location at current variable is inlined.
|
|
DIVariable llvm::createInlinedVariable(MDNode *DV, MDNode *InlinedScope,
|
|
LLVMContext &VMContext) {
|
|
SmallVector<Value *, 16> Elts;
|
|
// Insert inlined scope as 7th element.
|
|
for (unsigned i = 0, e = DV->getNumOperands(); i != e; ++i)
|
|
i == 7 ? Elts.push_back(InlinedScope) : Elts.push_back(DV->getOperand(i));
|
|
return DIVariable(MDNode::get(VMContext, Elts));
|
|
}
|
|
|
|
/// cleanseInlinedVariable - Remove inlined scope from the variable.
|
|
DIVariable llvm::cleanseInlinedVariable(MDNode *DV, LLVMContext &VMContext) {
|
|
SmallVector<Value *, 16> Elts;
|
|
// Insert inlined scope as 7th element.
|
|
for (unsigned i = 0, e = DV->getNumOperands(); i != e; ++i)
|
|
i == 7 ? Elts.push_back(Constant::getNullValue(Type::getInt32Ty(VMContext)))
|
|
: Elts.push_back(DV->getOperand(i));
|
|
return DIVariable(MDNode::get(VMContext, Elts));
|
|
}
|
|
|
|
|
|
/// getEntireVariable - Remove OpPiece exprs from the variable.
|
|
DIVariable llvm::getEntireVariable(DIVariable DV) {
|
|
if (!DV.isVariablePiece())
|
|
return DV;
|
|
|
|
SmallVector<Value *, 8> Elts;
|
|
for (unsigned i = 0; i < 8; ++i)
|
|
Elts.push_back(DV->getOperand(i));
|
|
|
|
return DIVariable(MDNode::get(DV->getContext(), Elts));
|
|
}
|
|
|
|
/// getDISubprogram - Find subprogram that is enclosing this scope.
|
|
DISubprogram llvm::getDISubprogram(const MDNode *Scope) {
|
|
DIDescriptor D(Scope);
|
|
if (D.isSubprogram())
|
|
return DISubprogram(Scope);
|
|
|
|
if (D.isLexicalBlockFile())
|
|
return getDISubprogram(DILexicalBlockFile(Scope).getContext());
|
|
|
|
if (D.isLexicalBlock())
|
|
return getDISubprogram(DILexicalBlock(Scope).getContext());
|
|
|
|
return DISubprogram();
|
|
}
|
|
|
|
/// getDICompositeType - Find underlying composite type.
|
|
DICompositeType llvm::getDICompositeType(DIType T) {
|
|
if (T.isCompositeType())
|
|
return DICompositeType(T);
|
|
|
|
if (T.isDerivedType()) {
|
|
// This function is currently used by dragonegg and dragonegg does
|
|
// not generate identifier for types, so using an empty map to resolve
|
|
// DerivedFrom should be fine.
|
|
DITypeIdentifierMap EmptyMap;
|
|
return getDICompositeType(
|
|
DIDerivedType(T).getTypeDerivedFrom().resolve(EmptyMap));
|
|
}
|
|
|
|
return DICompositeType();
|
|
}
|
|
|
|
/// Update DITypeIdentifierMap by going through retained types of each CU.
|
|
DITypeIdentifierMap
|
|
llvm::generateDITypeIdentifierMap(const NamedMDNode *CU_Nodes) {
|
|
DITypeIdentifierMap Map;
|
|
for (unsigned CUi = 0, CUe = CU_Nodes->getNumOperands(); CUi != CUe; ++CUi) {
|
|
DICompileUnit CU(CU_Nodes->getOperand(CUi));
|
|
DIArray Retain = CU.getRetainedTypes();
|
|
for (unsigned Ti = 0, Te = Retain.getNumElements(); Ti != Te; ++Ti) {
|
|
if (!Retain.getElement(Ti).isCompositeType())
|
|
continue;
|
|
DICompositeType Ty(Retain.getElement(Ti));
|
|
if (MDString *TypeId = Ty.getIdentifier()) {
|
|
// Definition has priority over declaration.
|
|
// Try to insert (TypeId, Ty) to Map.
|
|
std::pair<DITypeIdentifierMap::iterator, bool> P =
|
|
Map.insert(std::make_pair(TypeId, Ty));
|
|
// If TypeId already exists in Map and this is a definition, replace
|
|
// whatever we had (declaration or definition) with the definition.
|
|
if (!P.second && !Ty.isForwardDecl())
|
|
P.first->second = Ty;
|
|
}
|
|
}
|
|
}
|
|
return Map;
|
|
}
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// DebugInfoFinder implementations.
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
void DebugInfoFinder::reset() {
|
|
CUs.clear();
|
|
SPs.clear();
|
|
GVs.clear();
|
|
TYs.clear();
|
|
Scopes.clear();
|
|
NodesSeen.clear();
|
|
TypeIdentifierMap.clear();
|
|
TypeMapInitialized = false;
|
|
}
|
|
|
|
void DebugInfoFinder::InitializeTypeMap(const Module &M) {
|
|
if (!TypeMapInitialized)
|
|
if (NamedMDNode *CU_Nodes = M.getNamedMetadata("llvm.dbg.cu")) {
|
|
TypeIdentifierMap = generateDITypeIdentifierMap(CU_Nodes);
|
|
TypeMapInitialized = true;
|
|
}
|
|
}
|
|
|
|
/// processModule - Process entire module and collect debug info.
|
|
void DebugInfoFinder::processModule(const Module &M) {
|
|
InitializeTypeMap(M);
|
|
if (NamedMDNode *CU_Nodes = M.getNamedMetadata("llvm.dbg.cu")) {
|
|
for (unsigned i = 0, e = CU_Nodes->getNumOperands(); i != e; ++i) {
|
|
DICompileUnit CU(CU_Nodes->getOperand(i));
|
|
addCompileUnit(CU);
|
|
DIArray GVs = CU.getGlobalVariables();
|
|
for (unsigned i = 0, e = GVs.getNumElements(); i != e; ++i) {
|
|
DIGlobalVariable DIG(GVs.getElement(i));
|
|
if (addGlobalVariable(DIG)) {
|
|
processScope(DIG.getContext());
|
|
processType(DIG.getType().resolve(TypeIdentifierMap));
|
|
}
|
|
}
|
|
DIArray SPs = CU.getSubprograms();
|
|
for (unsigned i = 0, e = SPs.getNumElements(); i != e; ++i)
|
|
processSubprogram(DISubprogram(SPs.getElement(i)));
|
|
DIArray EnumTypes = CU.getEnumTypes();
|
|
for (unsigned i = 0, e = EnumTypes.getNumElements(); i != e; ++i)
|
|
processType(DIType(EnumTypes.getElement(i)));
|
|
DIArray RetainedTypes = CU.getRetainedTypes();
|
|
for (unsigned i = 0, e = RetainedTypes.getNumElements(); i != e; ++i)
|
|
processType(DIType(RetainedTypes.getElement(i)));
|
|
DIArray Imports = CU.getImportedEntities();
|
|
for (unsigned i = 0, e = Imports.getNumElements(); i != e; ++i) {
|
|
DIImportedEntity Import = DIImportedEntity(Imports.getElement(i));
|
|
DIDescriptor Entity = Import.getEntity().resolve(TypeIdentifierMap);
|
|
if (Entity.isType())
|
|
processType(DIType(Entity));
|
|
else if (Entity.isSubprogram())
|
|
processSubprogram(DISubprogram(Entity));
|
|
else if (Entity.isNameSpace())
|
|
processScope(DINameSpace(Entity).getContext());
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/// processLocation - Process DILocation.
|
|
void DebugInfoFinder::processLocation(const Module &M, DILocation Loc) {
|
|
if (!Loc)
|
|
return;
|
|
InitializeTypeMap(M);
|
|
processScope(Loc.getScope());
|
|
processLocation(M, Loc.getOrigLocation());
|
|
}
|
|
|
|
/// processType - Process DIType.
|
|
void DebugInfoFinder::processType(DIType DT) {
|
|
if (!addType(DT))
|
|
return;
|
|
processScope(DT.getContext().resolve(TypeIdentifierMap));
|
|
if (DT.isCompositeType()) {
|
|
DICompositeType DCT(DT);
|
|
processType(DCT.getTypeDerivedFrom().resolve(TypeIdentifierMap));
|
|
if (DT.isSubroutineType()) {
|
|
DITypeArray DTA = DISubroutineType(DT).getTypeArray();
|
|
for (unsigned i = 0, e = DTA.getNumElements(); i != e; ++i)
|
|
processType(DTA.getElement(i).resolve(TypeIdentifierMap));
|
|
return;
|
|
}
|
|
DIArray DA = DCT.getElements();
|
|
for (unsigned i = 0, e = DA.getNumElements(); i != e; ++i) {
|
|
DIDescriptor D = DA.getElement(i);
|
|
if (D.isType())
|
|
processType(DIType(D));
|
|
else if (D.isSubprogram())
|
|
processSubprogram(DISubprogram(D));
|
|
}
|
|
} else if (DT.isDerivedType()) {
|
|
DIDerivedType DDT(DT);
|
|
processType(DDT.getTypeDerivedFrom().resolve(TypeIdentifierMap));
|
|
}
|
|
}
|
|
|
|
void DebugInfoFinder::processScope(DIScope Scope) {
|
|
if (Scope.isType()) {
|
|
DIType Ty(Scope);
|
|
processType(Ty);
|
|
return;
|
|
}
|
|
if (Scope.isCompileUnit()) {
|
|
addCompileUnit(DICompileUnit(Scope));
|
|
return;
|
|
}
|
|
if (Scope.isSubprogram()) {
|
|
processSubprogram(DISubprogram(Scope));
|
|
return;
|
|
}
|
|
if (!addScope(Scope))
|
|
return;
|
|
if (Scope.isLexicalBlock()) {
|
|
DILexicalBlock LB(Scope);
|
|
processScope(LB.getContext());
|
|
} else if (Scope.isLexicalBlockFile()) {
|
|
DILexicalBlockFile LBF = DILexicalBlockFile(Scope);
|
|
processScope(LBF.getScope());
|
|
} else if (Scope.isNameSpace()) {
|
|
DINameSpace NS(Scope);
|
|
processScope(NS.getContext());
|
|
}
|
|
}
|
|
|
|
/// processSubprogram - Process DISubprogram.
|
|
void DebugInfoFinder::processSubprogram(DISubprogram SP) {
|
|
if (!addSubprogram(SP))
|
|
return;
|
|
processScope(SP.getContext().resolve(TypeIdentifierMap));
|
|
processType(SP.getType());
|
|
DIArray TParams = SP.getTemplateParams();
|
|
for (unsigned I = 0, E = TParams.getNumElements(); I != E; ++I) {
|
|
DIDescriptor Element = TParams.getElement(I);
|
|
if (Element.isTemplateTypeParameter()) {
|
|
DITemplateTypeParameter TType(Element);
|
|
processScope(TType.getContext().resolve(TypeIdentifierMap));
|
|
processType(TType.getType().resolve(TypeIdentifierMap));
|
|
} else if (Element.isTemplateValueParameter()) {
|
|
DITemplateValueParameter TVal(Element);
|
|
processScope(TVal.getContext().resolve(TypeIdentifierMap));
|
|
processType(TVal.getType().resolve(TypeIdentifierMap));
|
|
}
|
|
}
|
|
}
|
|
|
|
/// processDeclare - Process DbgDeclareInst.
|
|
void DebugInfoFinder::processDeclare(const Module &M,
|
|
const DbgDeclareInst *DDI) {
|
|
MDNode *N = dyn_cast<MDNode>(DDI->getVariable());
|
|
if (!N)
|
|
return;
|
|
InitializeTypeMap(M);
|
|
|
|
DIDescriptor DV(N);
|
|
if (!DV.isVariable())
|
|
return;
|
|
|
|
if (!NodesSeen.insert(DV))
|
|
return;
|
|
processScope(DIVariable(N).getContext());
|
|
processType(DIVariable(N).getType().resolve(TypeIdentifierMap));
|
|
}
|
|
|
|
void DebugInfoFinder::processValue(const Module &M, const DbgValueInst *DVI) {
|
|
MDNode *N = dyn_cast<MDNode>(DVI->getVariable());
|
|
if (!N)
|
|
return;
|
|
InitializeTypeMap(M);
|
|
|
|
DIDescriptor DV(N);
|
|
if (!DV.isVariable())
|
|
return;
|
|
|
|
if (!NodesSeen.insert(DV))
|
|
return;
|
|
processScope(DIVariable(N).getContext());
|
|
processType(DIVariable(N).getType().resolve(TypeIdentifierMap));
|
|
}
|
|
|
|
/// addType - Add type into Tys.
|
|
bool DebugInfoFinder::addType(DIType DT) {
|
|
if (!DT)
|
|
return false;
|
|
|
|
if (!NodesSeen.insert(DT))
|
|
return false;
|
|
|
|
TYs.push_back(DT);
|
|
return true;
|
|
}
|
|
|
|
/// addCompileUnit - Add compile unit into CUs.
|
|
bool DebugInfoFinder::addCompileUnit(DICompileUnit CU) {
|
|
if (!CU)
|
|
return false;
|
|
if (!NodesSeen.insert(CU))
|
|
return false;
|
|
|
|
CUs.push_back(CU);
|
|
return true;
|
|
}
|
|
|
|
/// addGlobalVariable - Add global variable into GVs.
|
|
bool DebugInfoFinder::addGlobalVariable(DIGlobalVariable DIG) {
|
|
if (!DIG)
|
|
return false;
|
|
|
|
if (!NodesSeen.insert(DIG))
|
|
return false;
|
|
|
|
GVs.push_back(DIG);
|
|
return true;
|
|
}
|
|
|
|
// addSubprogram - Add subprgoram into SPs.
|
|
bool DebugInfoFinder::addSubprogram(DISubprogram SP) {
|
|
if (!SP)
|
|
return false;
|
|
|
|
if (!NodesSeen.insert(SP))
|
|
return false;
|
|
|
|
SPs.push_back(SP);
|
|
return true;
|
|
}
|
|
|
|
bool DebugInfoFinder::addScope(DIScope Scope) {
|
|
if (!Scope)
|
|
return false;
|
|
// FIXME: Ocaml binding generates a scope with no content, we treat it
|
|
// as null for now.
|
|
if (Scope->getNumOperands() == 0)
|
|
return false;
|
|
if (!NodesSeen.insert(Scope))
|
|
return false;
|
|
Scopes.push_back(Scope);
|
|
return true;
|
|
}
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// DIDescriptor: dump routines for all descriptors.
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
/// dump - Print descriptor to dbgs() with a newline.
|
|
void DIDescriptor::dump() const {
|
|
print(dbgs());
|
|
dbgs() << '\n';
|
|
}
|
|
|
|
/// print - Print descriptor.
|
|
void DIDescriptor::print(raw_ostream &OS) const {
|
|
if (!DbgNode)
|
|
return;
|
|
|
|
if (const char *Tag = dwarf::TagString(getTag()))
|
|
OS << "[ " << Tag << " ]";
|
|
|
|
if (this->isSubrange()) {
|
|
DISubrange(DbgNode).printInternal(OS);
|
|
} else if (this->isCompileUnit()) {
|
|
DICompileUnit(DbgNode).printInternal(OS);
|
|
} else if (this->isFile()) {
|
|
DIFile(DbgNode).printInternal(OS);
|
|
} else if (this->isEnumerator()) {
|
|
DIEnumerator(DbgNode).printInternal(OS);
|
|
} else if (this->isBasicType()) {
|
|
DIType(DbgNode).printInternal(OS);
|
|
} else if (this->isDerivedType()) {
|
|
DIDerivedType(DbgNode).printInternal(OS);
|
|
} else if (this->isCompositeType()) {
|
|
DICompositeType(DbgNode).printInternal(OS);
|
|
} else if (this->isSubprogram()) {
|
|
DISubprogram(DbgNode).printInternal(OS);
|
|
} else if (this->isGlobalVariable()) {
|
|
DIGlobalVariable(DbgNode).printInternal(OS);
|
|
} else if (this->isVariable()) {
|
|
DIVariable(DbgNode).printInternal(OS);
|
|
} else if (this->isObjCProperty()) {
|
|
DIObjCProperty(DbgNode).printInternal(OS);
|
|
} else if (this->isNameSpace()) {
|
|
DINameSpace(DbgNode).printInternal(OS);
|
|
} else if (this->isScope()) {
|
|
DIScope(DbgNode).printInternal(OS);
|
|
}
|
|
}
|
|
|
|
void DISubrange::printInternal(raw_ostream &OS) const {
|
|
int64_t Count = getCount();
|
|
if (Count != -1)
|
|
OS << " [" << getLo() << ", " << Count - 1 << ']';
|
|
else
|
|
OS << " [unbounded]";
|
|
}
|
|
|
|
void DIScope::printInternal(raw_ostream &OS) const {
|
|
OS << " [" << getDirectory() << "/" << getFilename() << ']';
|
|
}
|
|
|
|
void DICompileUnit::printInternal(raw_ostream &OS) const {
|
|
DIScope::printInternal(OS);
|
|
OS << " [";
|
|
unsigned Lang = getLanguage();
|
|
if (const char *LangStr = dwarf::LanguageString(Lang))
|
|
OS << LangStr;
|
|
else
|
|
(OS << "lang 0x").write_hex(Lang);
|
|
OS << ']';
|
|
}
|
|
|
|
void DIEnumerator::printInternal(raw_ostream &OS) const {
|
|
OS << " [" << getName() << " :: " << getEnumValue() << ']';
|
|
}
|
|
|
|
void DIType::printInternal(raw_ostream &OS) const {
|
|
if (!DbgNode)
|
|
return;
|
|
|
|
StringRef Res = getName();
|
|
if (!Res.empty())
|
|
OS << " [" << Res << "]";
|
|
|
|
// TODO: Print context?
|
|
|
|
OS << " [line " << getLineNumber() << ", size " << getSizeInBits()
|
|
<< ", align " << getAlignInBits() << ", offset " << getOffsetInBits();
|
|
if (isBasicType())
|
|
if (const char *Enc =
|
|
dwarf::AttributeEncodingString(DIBasicType(DbgNode).getEncoding()))
|
|
OS << ", enc " << Enc;
|
|
OS << "]";
|
|
|
|
if (isPrivate())
|
|
OS << " [private]";
|
|
else if (isProtected())
|
|
OS << " [protected]";
|
|
|
|
if (isArtificial())
|
|
OS << " [artificial]";
|
|
|
|
if (isForwardDecl())
|
|
OS << " [decl]";
|
|
else if (getTag() == dwarf::DW_TAG_structure_type ||
|
|
getTag() == dwarf::DW_TAG_union_type ||
|
|
getTag() == dwarf::DW_TAG_enumeration_type ||
|
|
getTag() == dwarf::DW_TAG_class_type)
|
|
OS << " [def]";
|
|
if (isVector())
|
|
OS << " [vector]";
|
|
if (isStaticMember())
|
|
OS << " [static]";
|
|
|
|
if (isLValueReference())
|
|
OS << " [reference]";
|
|
|
|
if (isRValueReference())
|
|
OS << " [rvalue reference]";
|
|
}
|
|
|
|
void DIDerivedType::printInternal(raw_ostream &OS) const {
|
|
DIType::printInternal(OS);
|
|
OS << " [from " << getTypeDerivedFrom().getName() << ']';
|
|
}
|
|
|
|
void DICompositeType::printInternal(raw_ostream &OS) const {
|
|
DIType::printInternal(OS);
|
|
DIArray A = getElements();
|
|
OS << " [" << A.getNumElements() << " elements]";
|
|
}
|
|
|
|
void DINameSpace::printInternal(raw_ostream &OS) const {
|
|
StringRef Name = getName();
|
|
if (!Name.empty())
|
|
OS << " [" << Name << ']';
|
|
|
|
OS << " [line " << getLineNumber() << ']';
|
|
}
|
|
|
|
void DISubprogram::printInternal(raw_ostream &OS) const {
|
|
// TODO : Print context
|
|
OS << " [line " << getLineNumber() << ']';
|
|
|
|
if (isLocalToUnit())
|
|
OS << " [local]";
|
|
|
|
if (isDefinition())
|
|
OS << " [def]";
|
|
|
|
if (getScopeLineNumber() != getLineNumber())
|
|
OS << " [scope " << getScopeLineNumber() << "]";
|
|
|
|
if (isPrivate())
|
|
OS << " [private]";
|
|
else if (isProtected())
|
|
OS << " [protected]";
|
|
|
|
if (isLValueReference())
|
|
OS << " [reference]";
|
|
|
|
if (isRValueReference())
|
|
OS << " [rvalue reference]";
|
|
|
|
StringRef Res = getName();
|
|
if (!Res.empty())
|
|
OS << " [" << Res << ']';
|
|
}
|
|
|
|
void DIGlobalVariable::printInternal(raw_ostream &OS) const {
|
|
StringRef Res = getName();
|
|
if (!Res.empty())
|
|
OS << " [" << Res << ']';
|
|
|
|
OS << " [line " << getLineNumber() << ']';
|
|
|
|
// TODO : Print context
|
|
|
|
if (isLocalToUnit())
|
|
OS << " [local]";
|
|
|
|
if (isDefinition())
|
|
OS << " [def]";
|
|
}
|
|
|
|
void DIVariable::printInternal(raw_ostream &OS) const {
|
|
StringRef Res = getName();
|
|
if (!Res.empty())
|
|
OS << " [" << Res << ']';
|
|
|
|
OS << " [line " << getLineNumber() << ']';
|
|
|
|
if (isVariablePiece())
|
|
OS << " [piece, size " << getPieceSize()
|
|
<< ", offset " << getPieceOffset() << ']';
|
|
}
|
|
|
|
void DIObjCProperty::printInternal(raw_ostream &OS) const {
|
|
StringRef Name = getObjCPropertyName();
|
|
if (!Name.empty())
|
|
OS << " [" << Name << ']';
|
|
|
|
OS << " [line " << getLineNumber() << ", properties " << getUnsignedField(6)
|
|
<< ']';
|
|
}
|
|
|
|
static void printDebugLoc(DebugLoc DL, raw_ostream &CommentOS,
|
|
const LLVMContext &Ctx) {
|
|
if (!DL.isUnknown()) { // Print source line info.
|
|
DIScope Scope(DL.getScope(Ctx));
|
|
assert(Scope.isScope() && "Scope of a DebugLoc should be a DIScope.");
|
|
// Omit the directory, because it's likely to be long and uninteresting.
|
|
CommentOS << Scope.getFilename();
|
|
CommentOS << ':' << DL.getLine();
|
|
if (DL.getCol() != 0)
|
|
CommentOS << ':' << DL.getCol();
|
|
DebugLoc InlinedAtDL = DebugLoc::getFromDILocation(DL.getInlinedAt(Ctx));
|
|
if (!InlinedAtDL.isUnknown()) {
|
|
CommentOS << " @[ ";
|
|
printDebugLoc(InlinedAtDL, CommentOS, Ctx);
|
|
CommentOS << " ]";
|
|
}
|
|
}
|
|
}
|
|
|
|
void DIVariable::printExtendedName(raw_ostream &OS) const {
|
|
const LLVMContext &Ctx = DbgNode->getContext();
|
|
StringRef Res = getName();
|
|
if (!Res.empty())
|
|
OS << Res << "," << getLineNumber();
|
|
if (MDNode *InlinedAt = getInlinedAt()) {
|
|
DebugLoc InlinedAtDL = DebugLoc::getFromDILocation(InlinedAt);
|
|
if (!InlinedAtDL.isUnknown()) {
|
|
OS << " @[";
|
|
printDebugLoc(InlinedAtDL, OS, Ctx);
|
|
OS << "]";
|
|
}
|
|
}
|
|
}
|
|
|
|
/// Specialize constructor to make sure it has the correct type.
|
|
template <> DIRef<DIScope>::DIRef(const Value *V) : Val(V) {
|
|
assert(isScopeRef(V) && "DIScopeRef should be a MDString or MDNode");
|
|
}
|
|
template <> DIRef<DIType>::DIRef(const Value *V) : Val(V) {
|
|
assert(isTypeRef(V) && "DITypeRef should be a MDString or MDNode");
|
|
}
|
|
|
|
/// Specialize getFieldAs to handle fields that are references to DIScopes.
|
|
template <>
|
|
DIScopeRef DIDescriptor::getFieldAs<DIScopeRef>(unsigned Elt) const {
|
|
return DIScopeRef(getField(DbgNode, Elt));
|
|
}
|
|
/// Specialize getFieldAs to handle fields that are references to DITypes.
|
|
template <> DITypeRef DIDescriptor::getFieldAs<DITypeRef>(unsigned Elt) const {
|
|
return DITypeRef(getField(DbgNode, Elt));
|
|
}
|
|
|
|
/// Strip debug info in the module if it exists.
|
|
/// To do this, we remove all calls to the debugger intrinsics and any named
|
|
/// metadata for debugging. We also remove debug locations for instructions.
|
|
/// Return true if module is modified.
|
|
bool llvm::StripDebugInfo(Module &M) {
|
|
|
|
bool Changed = false;
|
|
|
|
// Remove all of the calls to the debugger intrinsics, and remove them from
|
|
// the module.
|
|
if (Function *Declare = M.getFunction("llvm.dbg.declare")) {
|
|
while (!Declare->use_empty()) {
|
|
CallInst *CI = cast<CallInst>(Declare->user_back());
|
|
CI->eraseFromParent();
|
|
}
|
|
Declare->eraseFromParent();
|
|
Changed = true;
|
|
}
|
|
|
|
if (Function *DbgVal = M.getFunction("llvm.dbg.value")) {
|
|
while (!DbgVal->use_empty()) {
|
|
CallInst *CI = cast<CallInst>(DbgVal->user_back());
|
|
CI->eraseFromParent();
|
|
}
|
|
DbgVal->eraseFromParent();
|
|
Changed = true;
|
|
}
|
|
|
|
for (Module::named_metadata_iterator NMI = M.named_metadata_begin(),
|
|
NME = M.named_metadata_end(); NMI != NME;) {
|
|
NamedMDNode *NMD = NMI;
|
|
++NMI;
|
|
if (NMD->getName().startswith("llvm.dbg.")) {
|
|
NMD->eraseFromParent();
|
|
Changed = true;
|
|
}
|
|
}
|
|
|
|
for (Module::iterator MI = M.begin(), ME = M.end(); MI != ME; ++MI)
|
|
for (Function::iterator FI = MI->begin(), FE = MI->end(); FI != FE;
|
|
++FI)
|
|
for (BasicBlock::iterator BI = FI->begin(), BE = FI->end(); BI != BE;
|
|
++BI) {
|
|
if (!BI->getDebugLoc().isUnknown()) {
|
|
Changed = true;
|
|
BI->setDebugLoc(DebugLoc());
|
|
}
|
|
}
|
|
|
|
return Changed;
|
|
}
|
|
|
|
/// Return Debug Info Metadata Version by checking module flags.
|
|
unsigned llvm::getDebugMetadataVersionFromModule(const Module &M) {
|
|
Value *Val = M.getModuleFlag("Debug Info Version");
|
|
if (!Val)
|
|
return 0;
|
|
return cast<ConstantInt>(Val)->getZExtValue();
|
|
}
|
|
|
|
llvm::DenseMap<const llvm::Function *, llvm::DISubprogram>
|
|
llvm::makeSubprogramMap(const Module &M) {
|
|
DenseMap<const Function *, DISubprogram> R;
|
|
|
|
NamedMDNode *CU_Nodes = M.getNamedMetadata("llvm.dbg.cu");
|
|
if (!CU_Nodes)
|
|
return R;
|
|
|
|
for (MDNode *N : CU_Nodes->operands()) {
|
|
DICompileUnit CUNode(N);
|
|
DIArray SPs = CUNode.getSubprograms();
|
|
for (unsigned i = 0, e = SPs.getNumElements(); i != e; ++i) {
|
|
DISubprogram SP(SPs.getElement(i));
|
|
if (Function *F = SP.getFunction())
|
|
R.insert(std::make_pair(F, SP));
|
|
}
|
|
}
|
|
return R;
|
|
}
|