mirror of
https://github.com/c64scene-ar/llvm-6502.git
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materializing an MDNode for every debugloc. don't do that! :) "clang -g -S t.c" really no longer makes mdnodes for location tuples now. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100224 91177308-0d34-0410-b5e6-96231b3b80d8
1411 lines
45 KiB
C++
1411 lines
45 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/Analysis/DebugInfo.h"
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#include "llvm/Target/TargetMachine.h" // FIXME: LAYERING VIOLATION!
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#include "llvm/Constants.h"
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#include "llvm/DerivedTypes.h"
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#include "llvm/Intrinsics.h"
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#include "llvm/IntrinsicInst.h"
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#include "llvm/Instructions.h"
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#include "llvm/Module.h"
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#include "llvm/Analysis/ValueTracking.h"
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#include "llvm/ADT/SmallPtrSet.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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/// ValidDebugInfo - Return true if V represents valid debug info value.
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/// FIXME : Add DIDescriptor.isValid()
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bool DIDescriptor::ValidDebugInfo(MDNode *N, unsigned OptLevel) {
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if (!N)
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return false;
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DIDescriptor DI(N);
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// Check current version. Allow Version7 for now.
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unsigned Version = DI.getVersion();
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if (Version != LLVMDebugVersion && Version != LLVMDebugVersion7)
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return false;
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switch (DI.getTag()) {
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case DW_TAG_variable:
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assert(DIVariable(N).Verify() && "Invalid DebugInfo value");
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break;
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case DW_TAG_compile_unit:
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assert(DICompileUnit(N).Verify() && "Invalid DebugInfo value");
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break;
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case DW_TAG_subprogram:
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assert(DISubprogram(N).Verify() && "Invalid DebugInfo value");
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break;
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case DW_TAG_lexical_block:
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// FIXME: This interfers with the quality of generated code during
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// optimization.
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if (OptLevel != CodeGenOpt::None)
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return false;
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// FALLTHROUGH
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default:
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break;
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}
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return true;
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}
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StringRef
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DIDescriptor::getStringField(unsigned Elt) const {
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if (DbgNode == 0)
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return StringRef();
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if (Elt < DbgNode->getNumOperands())
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if (MDString *MDS = dyn_cast_or_null<MDString>(DbgNode->getOperand(Elt)))
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return MDS->getString();
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return StringRef();
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}
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uint64_t DIDescriptor::getUInt64Field(unsigned Elt) const {
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if (DbgNode == 0)
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return 0;
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if (Elt < DbgNode->getNumOperands())
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if (ConstantInt *CI = dyn_cast<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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DIDescriptor DIDescriptor::getDescriptorField(unsigned Elt) const {
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if (DbgNode == 0)
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return DIDescriptor();
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if (Elt < DbgNode->getNumOperands())
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return DIDescriptor(dyn_cast_or_null<MDNode>(DbgNode->getOperand(Elt)));
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return DIDescriptor();
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}
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GlobalVariable *DIDescriptor::getGlobalVariableField(unsigned Elt) const {
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if (DbgNode == 0)
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return 0;
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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 0;
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}
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unsigned DIVariable::getNumAddrElements() const {
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return DbgNode->getNumOperands()-6;
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}
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//===----------------------------------------------------------------------===//
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// Predicates
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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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return DbgNode && getTag() == dwarf::DW_TAG_base_type;
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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) 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_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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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) 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_vector_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) 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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case dwarf::DW_TAG_return_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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}
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/// isGlobal - Return true if the specified tag is legal for DIGlobal.
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bool DIDescriptor::isGlobal() const {
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return isGlobalVariable();
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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) 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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return true;
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default:
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break;
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}
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return false;
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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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/// 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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}
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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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//===----------------------------------------------------------------------===//
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// Simple Descriptor Constructors and other Methods
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//===----------------------------------------------------------------------===//
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DIType::DIType(MDNode *N) : DIScope(N) {
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if (!N) return;
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if (!isBasicType() && !isDerivedType() && !isCompositeType()) {
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DbgNode = 0;
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}
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}
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unsigned DIArray::getNumElements() const {
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if (!DbgNode)
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return 0;
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return DbgNode->getNumOperands();
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}
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/// replaceAllUsesWith - Replace all uses of debug info referenced by
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/// this descriptor. After this completes, the current debug info value
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/// is erased.
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void DIDerivedType::replaceAllUsesWith(DIDescriptor &D) {
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if (!DbgNode)
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return;
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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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if (getNode() != D.getNode()) {
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MDNode *Node = DbgNode;
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Node->replaceAllUsesWith(D.getNode());
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Node->destroy();
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}
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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 (!DbgNode)
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return false;
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StringRef N = getFilename();
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if (N.empty())
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return false;
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// It is possible that directory and produce string is empty.
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return true;
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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 (!DbgNode)
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return false;
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if (!getContext().Verify())
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return false;
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DICompileUnit CU = getCompileUnit();
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if (!CU.Verify())
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return false;
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return true;
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}
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/// Verify - Verify that a composite type descriptor is well formed.
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bool DICompositeType::Verify() const {
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if (!DbgNode)
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return false;
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if (!getContext().Verify())
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return false;
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DICompileUnit CU = getCompileUnit();
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if (!CU.Verify())
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return false;
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return true;
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}
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/// Verify - Verify that a subprogram descriptor is well formed.
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bool DISubprogram::Verify() const {
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if (!DbgNode)
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return false;
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if (!getContext().Verify())
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return false;
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DICompileUnit CU = getCompileUnit();
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if (!CU.Verify())
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return false;
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DICompositeType Ty = getType();
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if (!Ty.Verify())
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return false;
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return true;
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}
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/// Verify - Verify that a global variable descriptor is well formed.
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bool DIGlobalVariable::Verify() const {
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if (!DbgNode)
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return false;
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if (getDisplayName().empty())
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return false;
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if (!getContext().Verify())
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return false;
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DICompileUnit CU = getCompileUnit();
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if (!CU.Verify())
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return false;
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DIType Ty = getType();
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if (!Ty.Verify())
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return false;
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if (!getGlobal())
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return false;
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return true;
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}
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/// Verify - Verify that a variable descriptor is well formed.
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bool DIVariable::Verify() const {
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if (!DbgNode)
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return false;
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if (!getContext().Verify())
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return false;
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DIType Ty = getType();
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if (!Ty.Verify())
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return false;
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return true;
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}
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/// Verify - Verify that a location descriptor is well formed.
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bool DILocation::Verify() const {
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if (!DbgNode)
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return false;
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return DbgNode->getNumOperands() == 4;
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}
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/// getOriginalTypeSize - If this type is derived from a base type then
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/// return base type size.
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uint64_t DIDerivedType::getOriginalTypeSize() const {
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unsigned Tag = getTag();
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if (Tag == dwarf::DW_TAG_member || Tag == dwarf::DW_TAG_typedef ||
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Tag == dwarf::DW_TAG_const_type || Tag == dwarf::DW_TAG_volatile_type ||
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Tag == dwarf::DW_TAG_restrict_type) {
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DIType BaseType = getTypeDerivedFrom();
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// If this type is not derived from any type then take conservative
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// approach.
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if (!BaseType.isValid())
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return getSizeInBits();
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if (BaseType.isDerivedType())
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return DIDerivedType(BaseType.getNode()).getOriginalTypeSize();
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else
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return BaseType.getSizeInBits();
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}
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return getSizeInBits();
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}
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/// describes - Return true if this subprogram provides debugging
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/// information for the function F.
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bool DISubprogram::describes(const Function *F) {
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assert(F && "Invalid function");
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StringRef Name = getLinkageName();
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if (Name.empty())
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Name = getName();
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if (F->getName() == Name)
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return true;
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return false;
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}
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StringRef DIScope::getFilename() const {
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if (!DbgNode)
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return StringRef();
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if (isLexicalBlock())
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return DILexicalBlock(DbgNode).getFilename();
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if (isSubprogram())
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return DISubprogram(DbgNode).getFilename();
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if (isCompileUnit())
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return DICompileUnit(DbgNode).getFilename();
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if (isNameSpace())
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return DINameSpace(DbgNode).getFilename();
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if (isType())
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return DIType(DbgNode).getFilename();
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if (isFile())
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return DIFile(DbgNode).getFilename();
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assert(0 && "Invalid DIScope!");
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return StringRef();
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}
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StringRef DIScope::getDirectory() const {
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if (!DbgNode)
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return StringRef();
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if (isLexicalBlock())
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return DILexicalBlock(DbgNode).getDirectory();
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if (isSubprogram())
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return DISubprogram(DbgNode).getDirectory();
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if (isCompileUnit())
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return DICompileUnit(DbgNode).getDirectory();
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if (isNameSpace())
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return DINameSpace(DbgNode).getDirectory();
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if (isType())
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return DIType(DbgNode).getDirectory();
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if (isFile())
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return DIFile(DbgNode).getDirectory();
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assert(0 && "Invalid DIScope!");
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return StringRef();
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}
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//===----------------------------------------------------------------------===//
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// DIDescriptor: dump routines for all descriptors.
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//===----------------------------------------------------------------------===//
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/// dump - Print descriptor.
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void DIDescriptor::dump() const {
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dbgs() << "[" << dwarf::TagString(getTag()) << "] ";
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dbgs().write_hex((intptr_t) &*DbgNode) << ']';
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}
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/// dump - Print compile unit.
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void DICompileUnit::dump() const {
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if (getLanguage())
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dbgs() << " [" << dwarf::LanguageString(getLanguage()) << "] ";
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dbgs() << " [" << getDirectory() << "/" << getFilename() << " ]";
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}
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/// dump - Print type.
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void DIType::dump() const {
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if (!DbgNode) return;
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StringRef Res = getName();
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if (!Res.empty())
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dbgs() << " [" << Res << "] ";
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unsigned Tag = getTag();
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dbgs() << " [" << dwarf::TagString(Tag) << "] ";
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// TODO : Print context
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getCompileUnit().dump();
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dbgs() << " ["
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<< getLineNumber() << ", "
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<< getSizeInBits() << ", "
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<< getAlignInBits() << ", "
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<< getOffsetInBits()
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<< "] ";
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if (isPrivate())
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dbgs() << " [private] ";
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else if (isProtected())
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dbgs() << " [protected] ";
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if (isForwardDecl())
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dbgs() << " [fwd] ";
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if (isBasicType())
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DIBasicType(DbgNode).dump();
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else if (isDerivedType())
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DIDerivedType(DbgNode).dump();
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else if (isCompositeType())
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DICompositeType(DbgNode).dump();
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else {
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dbgs() << "Invalid DIType\n";
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return;
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}
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dbgs() << "\n";
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}
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/// dump - Print basic type.
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void DIBasicType::dump() const {
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dbgs() << " [" << dwarf::AttributeEncodingString(getEncoding()) << "] ";
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}
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/// dump - Print derived type.
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void DIDerivedType::dump() const {
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dbgs() << "\n\t Derived From: "; getTypeDerivedFrom().dump();
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}
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/// dump - Print composite type.
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void DICompositeType::dump() const {
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DIArray A = getTypeArray();
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dbgs() << " [" << A.getNumElements() << " elements]";
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}
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/// dump - Print global.
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void DIGlobal::dump() const {
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StringRef Res = getName();
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if (!Res.empty())
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dbgs() << " [" << Res << "] ";
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unsigned Tag = getTag();
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dbgs() << " [" << dwarf::TagString(Tag) << "] ";
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// TODO : Print context
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getCompileUnit().dump();
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dbgs() << " [" << getLineNumber() << "] ";
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|
|
if (isLocalToUnit())
|
|
dbgs() << " [local] ";
|
|
|
|
if (isDefinition())
|
|
dbgs() << " [def] ";
|
|
|
|
if (isGlobalVariable())
|
|
DIGlobalVariable(DbgNode).dump();
|
|
|
|
dbgs() << "\n";
|
|
}
|
|
|
|
/// dump - Print subprogram.
|
|
void DISubprogram::dump() const {
|
|
StringRef Res = getName();
|
|
if (!Res.empty())
|
|
dbgs() << " [" << Res << "] ";
|
|
|
|
unsigned Tag = getTag();
|
|
dbgs() << " [" << dwarf::TagString(Tag) << "] ";
|
|
|
|
// TODO : Print context
|
|
getCompileUnit().dump();
|
|
dbgs() << " [" << getLineNumber() << "] ";
|
|
|
|
if (isLocalToUnit())
|
|
dbgs() << " [local] ";
|
|
|
|
if (isDefinition())
|
|
dbgs() << " [def] ";
|
|
|
|
dbgs() << "\n";
|
|
}
|
|
|
|
/// dump - Print global variable.
|
|
void DIGlobalVariable::dump() const {
|
|
dbgs() << " [";
|
|
getGlobal()->dump();
|
|
dbgs() << "] ";
|
|
}
|
|
|
|
/// dump - Print variable.
|
|
void DIVariable::dump() const {
|
|
StringRef Res = getName();
|
|
if (!Res.empty())
|
|
dbgs() << " [" << Res << "] ";
|
|
|
|
getCompileUnit().dump();
|
|
dbgs() << " [" << getLineNumber() << "] ";
|
|
getType().dump();
|
|
dbgs() << "\n";
|
|
|
|
// FIXME: Dump complex addresses
|
|
}
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// DIFactory: Basic Helpers
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
DIFactory::DIFactory(Module &m)
|
|
: M(m), VMContext(M.getContext()), DeclareFn(0), ValueFn(0) {}
|
|
|
|
Constant *DIFactory::GetTagConstant(unsigned TAG) {
|
|
assert((TAG & LLVMDebugVersionMask) == 0 &&
|
|
"Tag too large for debug encoding!");
|
|
return ConstantInt::get(Type::getInt32Ty(VMContext), TAG | LLVMDebugVersion);
|
|
}
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// DIFactory: Primary Constructors
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
/// GetOrCreateArray - Create an descriptor for an array of descriptors.
|
|
/// This implicitly uniques the arrays created.
|
|
DIArray DIFactory::GetOrCreateArray(DIDescriptor *Tys, unsigned NumTys) {
|
|
SmallVector<Value*, 16> Elts;
|
|
|
|
if (NumTys == 0)
|
|
Elts.push_back(llvm::Constant::getNullValue(Type::getInt32Ty(VMContext)));
|
|
else
|
|
for (unsigned i = 0; i != NumTys; ++i)
|
|
Elts.push_back(Tys[i].getNode());
|
|
|
|
return DIArray(MDNode::get(VMContext,Elts.data(), Elts.size()));
|
|
}
|
|
|
|
/// GetOrCreateSubrange - Create a descriptor for a value range. This
|
|
/// implicitly uniques the values returned.
|
|
DISubrange DIFactory::GetOrCreateSubrange(int64_t Lo, int64_t Hi) {
|
|
Value *Elts[] = {
|
|
GetTagConstant(dwarf::DW_TAG_subrange_type),
|
|
ConstantInt::get(Type::getInt64Ty(VMContext), Lo),
|
|
ConstantInt::get(Type::getInt64Ty(VMContext), Hi)
|
|
};
|
|
|
|
return DISubrange(MDNode::get(VMContext, &Elts[0], 3));
|
|
}
|
|
|
|
|
|
|
|
/// CreateCompileUnit - Create a new descriptor for the specified compile
|
|
/// unit. Note that this does not unique compile units within the module.
|
|
DICompileUnit DIFactory::CreateCompileUnit(unsigned LangID,
|
|
StringRef Filename,
|
|
StringRef Directory,
|
|
StringRef Producer,
|
|
bool isMain,
|
|
bool isOptimized,
|
|
StringRef Flags,
|
|
unsigned RunTimeVer) {
|
|
Value *Elts[] = {
|
|
GetTagConstant(dwarf::DW_TAG_compile_unit),
|
|
llvm::Constant::getNullValue(Type::getInt32Ty(VMContext)),
|
|
ConstantInt::get(Type::getInt32Ty(VMContext), LangID),
|
|
MDString::get(VMContext, Filename),
|
|
MDString::get(VMContext, Directory),
|
|
MDString::get(VMContext, Producer),
|
|
ConstantInt::get(Type::getInt1Ty(VMContext), isMain),
|
|
ConstantInt::get(Type::getInt1Ty(VMContext), isOptimized),
|
|
MDString::get(VMContext, Flags),
|
|
ConstantInt::get(Type::getInt32Ty(VMContext), RunTimeVer)
|
|
};
|
|
|
|
return DICompileUnit(MDNode::get(VMContext, &Elts[0], 10));
|
|
}
|
|
|
|
/// CreateFile - Create a new descriptor for the specified file.
|
|
DIFile DIFactory::CreateFile(StringRef Filename,
|
|
StringRef Directory,
|
|
DICompileUnit CU) {
|
|
Value *Elts[] = {
|
|
GetTagConstant(dwarf::DW_TAG_file_type),
|
|
MDString::get(VMContext, Filename),
|
|
MDString::get(VMContext, Directory),
|
|
CU.getNode()
|
|
};
|
|
|
|
return DIFile(MDNode::get(VMContext, &Elts[0], 4));
|
|
}
|
|
|
|
/// CreateEnumerator - Create a single enumerator value.
|
|
DIEnumerator DIFactory::CreateEnumerator(StringRef Name, uint64_t Val){
|
|
Value *Elts[] = {
|
|
GetTagConstant(dwarf::DW_TAG_enumerator),
|
|
MDString::get(VMContext, Name),
|
|
ConstantInt::get(Type::getInt64Ty(VMContext), Val)
|
|
};
|
|
return DIEnumerator(MDNode::get(VMContext, &Elts[0], 3));
|
|
}
|
|
|
|
|
|
/// CreateBasicType - Create a basic type like int, float, etc.
|
|
DIBasicType DIFactory::CreateBasicType(DIDescriptor Context,
|
|
StringRef Name,
|
|
DIFile F,
|
|
unsigned LineNumber,
|
|
uint64_t SizeInBits,
|
|
uint64_t AlignInBits,
|
|
uint64_t OffsetInBits, unsigned Flags,
|
|
unsigned Encoding) {
|
|
Value *Elts[] = {
|
|
GetTagConstant(dwarf::DW_TAG_base_type),
|
|
Context.getNode(),
|
|
MDString::get(VMContext, Name),
|
|
F.getNode(),
|
|
ConstantInt::get(Type::getInt32Ty(VMContext), LineNumber),
|
|
ConstantInt::get(Type::getInt64Ty(VMContext), SizeInBits),
|
|
ConstantInt::get(Type::getInt64Ty(VMContext), AlignInBits),
|
|
ConstantInt::get(Type::getInt64Ty(VMContext), OffsetInBits),
|
|
ConstantInt::get(Type::getInt32Ty(VMContext), Flags),
|
|
ConstantInt::get(Type::getInt32Ty(VMContext), Encoding)
|
|
};
|
|
return DIBasicType(MDNode::get(VMContext, &Elts[0], 10));
|
|
}
|
|
|
|
|
|
/// CreateBasicType - Create a basic type like int, float, etc.
|
|
DIBasicType DIFactory::CreateBasicTypeEx(DIDescriptor Context,
|
|
StringRef Name,
|
|
DIFile F,
|
|
unsigned LineNumber,
|
|
Constant *SizeInBits,
|
|
Constant *AlignInBits,
|
|
Constant *OffsetInBits, unsigned Flags,
|
|
unsigned Encoding) {
|
|
Value *Elts[] = {
|
|
GetTagConstant(dwarf::DW_TAG_base_type),
|
|
Context.getNode(),
|
|
MDString::get(VMContext, Name),
|
|
F.getNode(),
|
|
ConstantInt::get(Type::getInt32Ty(VMContext), LineNumber),
|
|
SizeInBits,
|
|
AlignInBits,
|
|
OffsetInBits,
|
|
ConstantInt::get(Type::getInt32Ty(VMContext), Flags),
|
|
ConstantInt::get(Type::getInt32Ty(VMContext), Encoding)
|
|
};
|
|
return DIBasicType(MDNode::get(VMContext, &Elts[0], 10));
|
|
}
|
|
|
|
/// CreateArtificialType - Create a new DIType with "artificial" flag set.
|
|
DIType DIFactory::CreateArtificialType(DIType Ty) {
|
|
if (Ty.isArtificial())
|
|
return Ty;
|
|
|
|
SmallVector<Value *, 9> Elts;
|
|
MDNode *N = Ty.getNode();
|
|
assert (N && "Unexpected input DIType!");
|
|
for (unsigned i = 0, e = N->getNumOperands(); i != e; ++i) {
|
|
if (Value *V = N->getOperand(i))
|
|
Elts.push_back(V);
|
|
else
|
|
Elts.push_back(Constant::getNullValue(Type::getInt32Ty(VMContext)));
|
|
}
|
|
|
|
unsigned CurFlags = Ty.getFlags();
|
|
CurFlags = CurFlags | DIType::FlagArtificial;
|
|
|
|
// Flags are stored at this slot.
|
|
Elts[8] = ConstantInt::get(Type::getInt32Ty(VMContext), CurFlags);
|
|
|
|
return DIType(MDNode::get(VMContext, Elts.data(), Elts.size()));
|
|
}
|
|
|
|
/// CreateDerivedType - Create a derived type like const qualified type,
|
|
/// pointer, typedef, etc.
|
|
DIDerivedType DIFactory::CreateDerivedType(unsigned Tag,
|
|
DIDescriptor Context,
|
|
StringRef Name,
|
|
DIFile F,
|
|
unsigned LineNumber,
|
|
uint64_t SizeInBits,
|
|
uint64_t AlignInBits,
|
|
uint64_t OffsetInBits,
|
|
unsigned Flags,
|
|
DIType DerivedFrom) {
|
|
Value *Elts[] = {
|
|
GetTagConstant(Tag),
|
|
Context.getNode(),
|
|
MDString::get(VMContext, Name),
|
|
F.getNode(),
|
|
ConstantInt::get(Type::getInt32Ty(VMContext), LineNumber),
|
|
ConstantInt::get(Type::getInt64Ty(VMContext), SizeInBits),
|
|
ConstantInt::get(Type::getInt64Ty(VMContext), AlignInBits),
|
|
ConstantInt::get(Type::getInt64Ty(VMContext), OffsetInBits),
|
|
ConstantInt::get(Type::getInt32Ty(VMContext), Flags),
|
|
DerivedFrom.getNode(),
|
|
};
|
|
return DIDerivedType(MDNode::get(VMContext, &Elts[0], 10));
|
|
}
|
|
|
|
|
|
/// CreateDerivedType - Create a derived type like const qualified type,
|
|
/// pointer, typedef, etc.
|
|
DIDerivedType DIFactory::CreateDerivedTypeEx(unsigned Tag,
|
|
DIDescriptor Context,
|
|
StringRef Name,
|
|
DIFile F,
|
|
unsigned LineNumber,
|
|
Constant *SizeInBits,
|
|
Constant *AlignInBits,
|
|
Constant *OffsetInBits,
|
|
unsigned Flags,
|
|
DIType DerivedFrom) {
|
|
Value *Elts[] = {
|
|
GetTagConstant(Tag),
|
|
Context.getNode(),
|
|
MDString::get(VMContext, Name),
|
|
F.getNode(),
|
|
ConstantInt::get(Type::getInt32Ty(VMContext), LineNumber),
|
|
SizeInBits,
|
|
AlignInBits,
|
|
OffsetInBits,
|
|
ConstantInt::get(Type::getInt32Ty(VMContext), Flags),
|
|
DerivedFrom.getNode(),
|
|
};
|
|
return DIDerivedType(MDNode::get(VMContext, &Elts[0], 10));
|
|
}
|
|
|
|
|
|
/// CreateCompositeType - Create a composite type like array, struct, etc.
|
|
DICompositeType DIFactory::CreateCompositeType(unsigned Tag,
|
|
DIDescriptor Context,
|
|
StringRef Name,
|
|
DIFile F,
|
|
unsigned LineNumber,
|
|
uint64_t SizeInBits,
|
|
uint64_t AlignInBits,
|
|
uint64_t OffsetInBits,
|
|
unsigned Flags,
|
|
DIType DerivedFrom,
|
|
DIArray Elements,
|
|
unsigned RuntimeLang,
|
|
MDNode *ContainingType) {
|
|
|
|
Value *Elts[] = {
|
|
GetTagConstant(Tag),
|
|
Context.getNode(),
|
|
MDString::get(VMContext, Name),
|
|
F.getNode(),
|
|
ConstantInt::get(Type::getInt32Ty(VMContext), LineNumber),
|
|
ConstantInt::get(Type::getInt64Ty(VMContext), SizeInBits),
|
|
ConstantInt::get(Type::getInt64Ty(VMContext), AlignInBits),
|
|
ConstantInt::get(Type::getInt64Ty(VMContext), OffsetInBits),
|
|
ConstantInt::get(Type::getInt32Ty(VMContext), Flags),
|
|
DerivedFrom.getNode(),
|
|
Elements.getNode(),
|
|
ConstantInt::get(Type::getInt32Ty(VMContext), RuntimeLang),
|
|
ContainingType
|
|
};
|
|
return DICompositeType(MDNode::get(VMContext, &Elts[0], 13));
|
|
}
|
|
|
|
|
|
/// CreateCompositeType - Create a composite type like array, struct, etc.
|
|
DICompositeType DIFactory::CreateCompositeTypeEx(unsigned Tag,
|
|
DIDescriptor Context,
|
|
StringRef Name,
|
|
DIFile F,
|
|
unsigned LineNumber,
|
|
Constant *SizeInBits,
|
|
Constant *AlignInBits,
|
|
Constant *OffsetInBits,
|
|
unsigned Flags,
|
|
DIType DerivedFrom,
|
|
DIArray Elements,
|
|
unsigned RuntimeLang) {
|
|
|
|
Value *Elts[] = {
|
|
GetTagConstant(Tag),
|
|
Context.getNode(),
|
|
MDString::get(VMContext, Name),
|
|
F.getNode(),
|
|
ConstantInt::get(Type::getInt32Ty(VMContext), LineNumber),
|
|
SizeInBits,
|
|
AlignInBits,
|
|
OffsetInBits,
|
|
ConstantInt::get(Type::getInt32Ty(VMContext), Flags),
|
|
DerivedFrom.getNode(),
|
|
Elements.getNode(),
|
|
ConstantInt::get(Type::getInt32Ty(VMContext), RuntimeLang)
|
|
};
|
|
return DICompositeType(MDNode::get(VMContext, &Elts[0], 12));
|
|
}
|
|
|
|
|
|
/// CreateSubprogram - Create a new descriptor for the specified subprogram.
|
|
/// See comments in DISubprogram for descriptions of these fields. This
|
|
/// method does not unique the generated descriptors.
|
|
DISubprogram DIFactory::CreateSubprogram(DIDescriptor Context,
|
|
StringRef Name,
|
|
StringRef DisplayName,
|
|
StringRef LinkageName,
|
|
DIFile F,
|
|
unsigned LineNo, DIType Ty,
|
|
bool isLocalToUnit,
|
|
bool isDefinition,
|
|
unsigned VK, unsigned VIndex,
|
|
DIType ContainingType,
|
|
bool isArtificial) {
|
|
|
|
Value *Elts[] = {
|
|
GetTagConstant(dwarf::DW_TAG_subprogram),
|
|
llvm::Constant::getNullValue(Type::getInt32Ty(VMContext)),
|
|
Context.getNode(),
|
|
MDString::get(VMContext, Name),
|
|
MDString::get(VMContext, DisplayName),
|
|
MDString::get(VMContext, LinkageName),
|
|
F.getNode(),
|
|
ConstantInt::get(Type::getInt32Ty(VMContext), LineNo),
|
|
Ty.getNode(),
|
|
ConstantInt::get(Type::getInt1Ty(VMContext), isLocalToUnit),
|
|
ConstantInt::get(Type::getInt1Ty(VMContext), isDefinition),
|
|
ConstantInt::get(Type::getInt32Ty(VMContext), (unsigned)VK),
|
|
ConstantInt::get(Type::getInt32Ty(VMContext), VIndex),
|
|
ContainingType.getNode(),
|
|
ConstantInt::get(Type::getInt1Ty(VMContext), isArtificial)
|
|
};
|
|
return DISubprogram(MDNode::get(VMContext, &Elts[0], 15));
|
|
}
|
|
|
|
/// CreateSubprogramDefinition - Create new subprogram descriptor for the
|
|
/// given declaration.
|
|
DISubprogram DIFactory::CreateSubprogramDefinition(DISubprogram &SPDeclaration) {
|
|
if (SPDeclaration.isDefinition())
|
|
return DISubprogram(SPDeclaration.getNode());
|
|
|
|
MDNode *DeclNode = SPDeclaration.getNode();
|
|
Value *Elts[] = {
|
|
GetTagConstant(dwarf::DW_TAG_subprogram),
|
|
llvm::Constant::getNullValue(Type::getInt32Ty(VMContext)),
|
|
DeclNode->getOperand(2), // Context
|
|
DeclNode->getOperand(3), // Name
|
|
DeclNode->getOperand(4), // DisplayName
|
|
DeclNode->getOperand(5), // LinkageName
|
|
DeclNode->getOperand(6), // CompileUnit
|
|
DeclNode->getOperand(7), // LineNo
|
|
DeclNode->getOperand(8), // Type
|
|
DeclNode->getOperand(9), // isLocalToUnit
|
|
ConstantInt::get(Type::getInt1Ty(VMContext), true),
|
|
DeclNode->getOperand(11), // Virtuality
|
|
DeclNode->getOperand(12), // VIndex
|
|
DeclNode->getOperand(13), // Containting Type
|
|
DeclNode->getOperand(14) // isArtificial
|
|
};
|
|
return DISubprogram(MDNode::get(VMContext, &Elts[0], 15));
|
|
}
|
|
|
|
/// CreateGlobalVariable - Create a new descriptor for the specified global.
|
|
DIGlobalVariable
|
|
DIFactory::CreateGlobalVariable(DIDescriptor Context, StringRef Name,
|
|
StringRef DisplayName,
|
|
StringRef LinkageName,
|
|
DIFile F,
|
|
unsigned LineNo, DIType Ty,bool isLocalToUnit,
|
|
bool isDefinition, llvm::GlobalVariable *Val) {
|
|
Value *Elts[] = {
|
|
GetTagConstant(dwarf::DW_TAG_variable),
|
|
llvm::Constant::getNullValue(Type::getInt32Ty(VMContext)),
|
|
Context.getNode(),
|
|
MDString::get(VMContext, Name),
|
|
MDString::get(VMContext, DisplayName),
|
|
MDString::get(VMContext, LinkageName),
|
|
F.getNode(),
|
|
ConstantInt::get(Type::getInt32Ty(VMContext), LineNo),
|
|
Ty.getNode(),
|
|
ConstantInt::get(Type::getInt1Ty(VMContext), isLocalToUnit),
|
|
ConstantInt::get(Type::getInt1Ty(VMContext), isDefinition),
|
|
Val
|
|
};
|
|
|
|
Value *const *Vs = &Elts[0];
|
|
MDNode *Node = MDNode::get(VMContext,Vs, 12);
|
|
|
|
// Create a named metadata so that we do not lose this mdnode.
|
|
NamedMDNode *NMD = M.getOrInsertNamedMetadata("llvm.dbg.gv");
|
|
NMD->addOperand(Node);
|
|
|
|
return DIGlobalVariable(Node);
|
|
}
|
|
|
|
|
|
/// CreateVariable - Create a new descriptor for the specified variable.
|
|
DIVariable DIFactory::CreateVariable(unsigned Tag, DIDescriptor Context,
|
|
StringRef Name,
|
|
DIFile F,
|
|
unsigned LineNo,
|
|
DIType Ty) {
|
|
Value *Elts[] = {
|
|
GetTagConstant(Tag),
|
|
Context.getNode(),
|
|
MDString::get(VMContext, Name),
|
|
F.getNode(),
|
|
ConstantInt::get(Type::getInt32Ty(VMContext), LineNo),
|
|
Ty.getNode(),
|
|
};
|
|
return DIVariable(MDNode::get(VMContext, &Elts[0], 6));
|
|
}
|
|
|
|
|
|
/// CreateComplexVariable - Create a new descriptor for the specified variable
|
|
/// which has a complex address expression for its address.
|
|
DIVariable DIFactory::CreateComplexVariable(unsigned Tag, DIDescriptor Context,
|
|
const std::string &Name,
|
|
DIFile F,
|
|
unsigned LineNo,
|
|
DIType Ty,
|
|
SmallVector<Value *, 9> &addr) {
|
|
SmallVector<Value *, 9> Elts;
|
|
Elts.push_back(GetTagConstant(Tag));
|
|
Elts.push_back(Context.getNode());
|
|
Elts.push_back(MDString::get(VMContext, Name));
|
|
Elts.push_back(F.getNode());
|
|
Elts.push_back(ConstantInt::get(Type::getInt32Ty(VMContext), LineNo));
|
|
Elts.push_back(Ty.getNode());
|
|
Elts.insert(Elts.end(), addr.begin(), addr.end());
|
|
|
|
return DIVariable(MDNode::get(VMContext, &Elts[0], 6+addr.size()));
|
|
}
|
|
|
|
|
|
/// CreateBlock - This creates a descriptor for a lexical block with the
|
|
/// specified parent VMContext.
|
|
DILexicalBlock DIFactory::CreateLexicalBlock(DIDescriptor Context,
|
|
unsigned LineNo, unsigned Col) {
|
|
Value *Elts[] = {
|
|
GetTagConstant(dwarf::DW_TAG_lexical_block),
|
|
Context.getNode(),
|
|
ConstantInt::get(Type::getInt32Ty(VMContext), LineNo),
|
|
ConstantInt::get(Type::getInt32Ty(VMContext), Col)
|
|
};
|
|
return DILexicalBlock(MDNode::get(VMContext, &Elts[0], 4));
|
|
}
|
|
|
|
/// CreateNameSpace - This creates new descriptor for a namespace
|
|
/// with the specified parent context.
|
|
DINameSpace DIFactory::CreateNameSpace(DIDescriptor Context, StringRef Name,
|
|
DIFile F,
|
|
unsigned LineNo) {
|
|
Value *Elts[] = {
|
|
GetTagConstant(dwarf::DW_TAG_namespace),
|
|
Context.getNode(),
|
|
MDString::get(VMContext, Name),
|
|
F.getNode(),
|
|
ConstantInt::get(Type::getInt32Ty(VMContext), LineNo)
|
|
};
|
|
return DINameSpace(MDNode::get(VMContext, &Elts[0], 5));
|
|
}
|
|
|
|
/// CreateLocation - Creates a debug info location.
|
|
DILocation DIFactory::CreateLocation(unsigned LineNo, unsigned ColumnNo,
|
|
DIScope S, DILocation OrigLoc) {
|
|
Value *Elts[] = {
|
|
ConstantInt::get(Type::getInt32Ty(VMContext), LineNo),
|
|
ConstantInt::get(Type::getInt32Ty(VMContext), ColumnNo),
|
|
S.getNode(),
|
|
OrigLoc.getNode(),
|
|
};
|
|
return DILocation(MDNode::get(VMContext, &Elts[0], 4));
|
|
}
|
|
|
|
/// CreateLocation - Creates a debug info location.
|
|
DILocation DIFactory::CreateLocation(unsigned LineNo, unsigned ColumnNo,
|
|
DIScope S, MDNode *OrigLoc) {
|
|
Value *Elts[] = {
|
|
ConstantInt::get(Type::getInt32Ty(VMContext), LineNo),
|
|
ConstantInt::get(Type::getInt32Ty(VMContext), ColumnNo),
|
|
S.getNode(),
|
|
OrigLoc
|
|
};
|
|
return DILocation(MDNode::get(VMContext, &Elts[0], 4));
|
|
}
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// DIFactory: Routines for inserting code into a function
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
/// InsertDeclare - Insert a new llvm.dbg.declare intrinsic call.
|
|
Instruction *DIFactory::InsertDeclare(Value *Storage, DIVariable D,
|
|
Instruction *InsertBefore) {
|
|
assert(Storage && "no storage passed to dbg.declare");
|
|
assert(D.getNode() && "empty DIVariable passed to dbg.declare");
|
|
if (!DeclareFn)
|
|
DeclareFn = Intrinsic::getDeclaration(&M, Intrinsic::dbg_declare);
|
|
|
|
Value *Args[] = { MDNode::get(Storage->getContext(), &Storage, 1),
|
|
D.getNode() };
|
|
return CallInst::Create(DeclareFn, Args, Args+2, "", InsertBefore);
|
|
}
|
|
|
|
/// InsertDeclare - Insert a new llvm.dbg.declare intrinsic call.
|
|
Instruction *DIFactory::InsertDeclare(Value *Storage, DIVariable D,
|
|
BasicBlock *InsertAtEnd) {
|
|
assert(Storage && "no storage passed to dbg.declare");
|
|
assert(D.getNode() && "empty DIVariable passed to dbg.declare");
|
|
if (!DeclareFn)
|
|
DeclareFn = Intrinsic::getDeclaration(&M, Intrinsic::dbg_declare);
|
|
|
|
Value *Args[] = { MDNode::get(Storage->getContext(), &Storage, 1),
|
|
D.getNode() };
|
|
|
|
// If this block already has a terminator then insert this intrinsic
|
|
// before the terminator.
|
|
if (TerminatorInst *T = InsertAtEnd->getTerminator())
|
|
return CallInst::Create(DeclareFn, Args, Args+2, "", T);
|
|
else
|
|
return CallInst::Create(DeclareFn, Args, Args+2, "", InsertAtEnd);}
|
|
|
|
/// InsertDbgValueIntrinsic - Insert a new llvm.dbg.value intrinsic call.
|
|
Instruction *DIFactory::InsertDbgValueIntrinsic(Value *V, uint64_t Offset,
|
|
DIVariable D,
|
|
Instruction *InsertBefore) {
|
|
assert(V && "no value passed to dbg.value");
|
|
assert(D.getNode() && "empty DIVariable passed to dbg.value");
|
|
if (!ValueFn)
|
|
ValueFn = Intrinsic::getDeclaration(&M, Intrinsic::dbg_value);
|
|
|
|
Value *Args[] = { MDNode::get(V->getContext(), &V, 1),
|
|
ConstantInt::get(Type::getInt64Ty(V->getContext()), Offset),
|
|
D.getNode() };
|
|
return CallInst::Create(ValueFn, Args, Args+3, "", InsertBefore);
|
|
}
|
|
|
|
/// InsertDbgValueIntrinsic - Insert a new llvm.dbg.value intrinsic call.
|
|
Instruction *DIFactory::InsertDbgValueIntrinsic(Value *V, uint64_t Offset,
|
|
DIVariable D,
|
|
BasicBlock *InsertAtEnd) {
|
|
assert(V && "no value passed to dbg.value");
|
|
assert(D.getNode() && "empty DIVariable passed to dbg.value");
|
|
if (!ValueFn)
|
|
ValueFn = Intrinsic::getDeclaration(&M, Intrinsic::dbg_value);
|
|
|
|
Value *Args[] = { MDNode::get(V->getContext(), &V, 1),
|
|
ConstantInt::get(Type::getInt64Ty(V->getContext()), Offset),
|
|
D.getNode() };
|
|
return CallInst::Create(ValueFn, Args, Args+3, "", InsertAtEnd);
|
|
}
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// DebugInfoFinder implementations.
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
/// processModule - Process entire module and collect debug info.
|
|
void DebugInfoFinder::processModule(Module &M) {
|
|
for (Module::iterator I = M.begin(), E = M.end(); I != E; ++I)
|
|
for (Function::iterator FI = (*I).begin(), FE = (*I).end(); FI != FE; ++FI)
|
|
for (BasicBlock::iterator BI = (*FI).begin(), BE = (*FI).end(); BI != BE;
|
|
++BI) {
|
|
if (DbgDeclareInst *DDI = dyn_cast<DbgDeclareInst>(BI)) {
|
|
processDeclare(DDI);
|
|
continue;
|
|
}
|
|
|
|
DebugLoc Loc = BI->getDebugLoc();
|
|
if (Loc.isUnknown())
|
|
continue;
|
|
|
|
LLVMContext &Ctx = BI->getContext();
|
|
DIDescriptor Scope(Loc.getScope(Ctx));
|
|
|
|
if (Scope.isCompileUnit())
|
|
addCompileUnit(DICompileUnit(Scope.getNode()));
|
|
else if (Scope.isSubprogram())
|
|
processSubprogram(DISubprogram(Scope.getNode()));
|
|
else if (Scope.isLexicalBlock())
|
|
processLexicalBlock(DILexicalBlock(Scope.getNode()));
|
|
|
|
if (MDNode *IA = Loc.getInlinedAt(Ctx))
|
|
processLocation(DILocation(IA));
|
|
}
|
|
|
|
NamedMDNode *NMD = M.getNamedMetadata("llvm.dbg.gv");
|
|
if (!NMD)
|
|
return;
|
|
|
|
for (unsigned i = 0, e = NMD->getNumOperands(); i != e; ++i) {
|
|
DIGlobalVariable DIG(cast<MDNode>(NMD->getOperand(i)));
|
|
if (addGlobalVariable(DIG)) {
|
|
addCompileUnit(DIG.getCompileUnit());
|
|
processType(DIG.getType());
|
|
}
|
|
}
|
|
}
|
|
|
|
/// processLocation - Process DILocation.
|
|
void DebugInfoFinder::processLocation(DILocation Loc) {
|
|
if (!Loc.Verify()) return;
|
|
DIDescriptor S(Loc.getScope().getNode());
|
|
if (S.isCompileUnit())
|
|
addCompileUnit(DICompileUnit(S.getNode()));
|
|
else if (S.isSubprogram())
|
|
processSubprogram(DISubprogram(S.getNode()));
|
|
else if (S.isLexicalBlock())
|
|
processLexicalBlock(DILexicalBlock(S.getNode()));
|
|
processLocation(Loc.getOrigLocation());
|
|
}
|
|
|
|
/// processType - Process DIType.
|
|
void DebugInfoFinder::processType(DIType DT) {
|
|
if (!addType(DT))
|
|
return;
|
|
|
|
addCompileUnit(DT.getCompileUnit());
|
|
if (DT.isCompositeType()) {
|
|
DICompositeType DCT(DT.getNode());
|
|
processType(DCT.getTypeDerivedFrom());
|
|
DIArray DA = DCT.getTypeArray();
|
|
for (unsigned i = 0, e = DA.getNumElements(); i != e; ++i) {
|
|
DIDescriptor D = DA.getElement(i);
|
|
if (D.isType())
|
|
processType(DIType(D.getNode()));
|
|
else if (D.isSubprogram())
|
|
processSubprogram(DISubprogram(D.getNode()));
|
|
}
|
|
} else if (DT.isDerivedType()) {
|
|
DIDerivedType DDT(DT.getNode());
|
|
processType(DDT.getTypeDerivedFrom());
|
|
}
|
|
}
|
|
|
|
/// processLexicalBlock
|
|
void DebugInfoFinder::processLexicalBlock(DILexicalBlock LB) {
|
|
DIScope Context = LB.getContext();
|
|
if (Context.isLexicalBlock())
|
|
return processLexicalBlock(DILexicalBlock(Context.getNode()));
|
|
else
|
|
return processSubprogram(DISubprogram(Context.getNode()));
|
|
}
|
|
|
|
/// processSubprogram - Process DISubprogram.
|
|
void DebugInfoFinder::processSubprogram(DISubprogram SP) {
|
|
if (!addSubprogram(SP))
|
|
return;
|
|
addCompileUnit(SP.getCompileUnit());
|
|
processType(SP.getType());
|
|
}
|
|
|
|
/// processDeclare - Process DbgDeclareInst.
|
|
void DebugInfoFinder::processDeclare(DbgDeclareInst *DDI) {
|
|
MDNode *N = dyn_cast<MDNode>(DDI->getVariable());
|
|
if (!N) return;
|
|
|
|
DIDescriptor DV(N);
|
|
if (!DV.isVariable())
|
|
return;
|
|
|
|
if (!NodesSeen.insert(DV.getNode()))
|
|
return;
|
|
|
|
addCompileUnit(DIVariable(N).getCompileUnit());
|
|
processType(DIVariable(N).getType());
|
|
}
|
|
|
|
/// addType - Add type into Tys.
|
|
bool DebugInfoFinder::addType(DIType DT) {
|
|
if (!DT.isValid())
|
|
return false;
|
|
|
|
if (!NodesSeen.insert(DT.getNode()))
|
|
return false;
|
|
|
|
TYs.push_back(DT.getNode());
|
|
return true;
|
|
}
|
|
|
|
/// addCompileUnit - Add compile unit into CUs.
|
|
bool DebugInfoFinder::addCompileUnit(DICompileUnit CU) {
|
|
if (!CU.Verify())
|
|
return false;
|
|
|
|
if (!NodesSeen.insert(CU.getNode()))
|
|
return false;
|
|
|
|
CUs.push_back(CU.getNode());
|
|
return true;
|
|
}
|
|
|
|
/// addGlobalVariable - Add global variable into GVs.
|
|
bool DebugInfoFinder::addGlobalVariable(DIGlobalVariable DIG) {
|
|
if (!DIDescriptor(DIG.getNode()).isGlobalVariable())
|
|
return false;
|
|
|
|
if (!NodesSeen.insert(DIG.getNode()))
|
|
return false;
|
|
|
|
GVs.push_back(DIG.getNode());
|
|
return true;
|
|
}
|
|
|
|
// addSubprogram - Add subprgoram into SPs.
|
|
bool DebugInfoFinder::addSubprogram(DISubprogram SP) {
|
|
if (!DIDescriptor(SP.getNode()).isSubprogram())
|
|
return false;
|
|
|
|
if (!NodesSeen.insert(SP.getNode()))
|
|
return false;
|
|
|
|
SPs.push_back(SP.getNode());
|
|
return true;
|
|
}
|
|
|
|
/// Find the debug info descriptor corresponding to this global variable.
|
|
static Value *findDbgGlobalDeclare(GlobalVariable *V) {
|
|
const Module *M = V->getParent();
|
|
NamedMDNode *NMD = M->getNamedMetadata("llvm.dbg.gv");
|
|
if (!NMD)
|
|
return 0;
|
|
|
|
for (unsigned i = 0, e = NMD->getNumOperands(); i != e; ++i) {
|
|
DIDescriptor DIG(cast_or_null<MDNode>(NMD->getOperand(i)));
|
|
if (!DIG.isGlobalVariable())
|
|
continue;
|
|
if (DIGlobalVariable(DIG.getNode()).getGlobal() == V)
|
|
return DIG.getNode();
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/// Finds the llvm.dbg.declare intrinsic corresponding to this value if any.
|
|
/// It looks through pointer casts too.
|
|
static const DbgDeclareInst *findDbgDeclare(const Value *V) {
|
|
V = V->stripPointerCasts();
|
|
|
|
if (!isa<Instruction>(V) && !isa<Argument>(V))
|
|
return 0;
|
|
|
|
const Function *F = NULL;
|
|
if (const Instruction *I = dyn_cast<Instruction>(V))
|
|
F = I->getParent()->getParent();
|
|
else if (const Argument *A = dyn_cast<Argument>(V))
|
|
F = A->getParent();
|
|
|
|
for (Function::const_iterator FI = F->begin(), FE = F->end(); FI != FE; ++FI)
|
|
for (BasicBlock::const_iterator BI = (*FI).begin(), BE = (*FI).end();
|
|
BI != BE; ++BI)
|
|
if (const DbgDeclareInst *DDI = dyn_cast<DbgDeclareInst>(BI))
|
|
if (DDI->getAddress() == V)
|
|
return DDI;
|
|
|
|
return 0;
|
|
}
|
|
|
|
bool llvm::getLocationInfo(const Value *V, std::string &DisplayName,
|
|
std::string &Type, unsigned &LineNo,
|
|
std::string &File, std::string &Dir) {
|
|
DICompileUnit Unit;
|
|
DIType TypeD;
|
|
|
|
if (GlobalVariable *GV = dyn_cast<GlobalVariable>(const_cast<Value*>(V))) {
|
|
Value *DIGV = findDbgGlobalDeclare(GV);
|
|
if (!DIGV) return false;
|
|
DIGlobalVariable Var(cast<MDNode>(DIGV));
|
|
|
|
StringRef D = Var.getDisplayName();
|
|
if (!D.empty())
|
|
DisplayName = D;
|
|
LineNo = Var.getLineNumber();
|
|
Unit = Var.getCompileUnit();
|
|
TypeD = Var.getType();
|
|
} else {
|
|
const DbgDeclareInst *DDI = findDbgDeclare(V);
|
|
if (!DDI) return false;
|
|
DIVariable Var(cast<MDNode>(DDI->getVariable()));
|
|
|
|
StringRef D = Var.getName();
|
|
if (!D.empty())
|
|
DisplayName = D;
|
|
LineNo = Var.getLineNumber();
|
|
Unit = Var.getCompileUnit();
|
|
TypeD = Var.getType();
|
|
}
|
|
|
|
StringRef T = TypeD.getName();
|
|
if (!T.empty())
|
|
Type = T;
|
|
StringRef F = Unit.getFilename();
|
|
if (!F.empty())
|
|
File = F;
|
|
StringRef D = Unit.getDirectory();
|
|
if (!D.empty())
|
|
Dir = D;
|
|
return true;
|
|
}
|
|
|
|
/// getDISubprogram - Find subprogram that is enclosing this scope.
|
|
DISubprogram llvm::getDISubprogram(MDNode *Scope) {
|
|
DIDescriptor D(Scope);
|
|
if (D.isSubprogram())
|
|
return DISubprogram(Scope);
|
|
|
|
if (D.isLexicalBlock())
|
|
return getDISubprogram(DILexicalBlock(Scope).getContext().getNode());
|
|
|
|
return DISubprogram();
|
|
}
|
|
|
|
/// getDICompositeType - Find underlying composite type.
|
|
DICompositeType llvm::getDICompositeType(DIType T) {
|
|
if (T.isCompositeType())
|
|
return DICompositeType(T.getNode());
|
|
|
|
if (T.isDerivedType())
|
|
return getDICompositeType(DIDerivedType(T.getNode()).getTypeDerivedFrom());
|
|
|
|
return DICompositeType();
|
|
}
|