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Revert "[dsymutil] Gather function ranges during DIE selection." 

This reverts commit r231957.

IntervalMap currently doesn't support keys more aligned than host pointers
and I've been using it with uint64_t keys. This asserts on some 32bits
systems.

Revert while I work on an IntervalMap generalization.

llvm-svn: 231967
This commit is contained in:
Frederic Riss 2015-03-11 21:17:41 +00:00
parent 5f4b6c7c9e
commit df41a30250
1 changed files with 4 additions and 47 deletions
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51
llvm/tools/dsymutil/DwarfLinker.cpp
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@ -10,7 +10,6 @@
#include "BinaryHolder.h"
#include "DebugMap.h"
#include "dsymutil.h"
#include "llvm/ADT/IntervalMap.h"
#include "llvm/ADT/StringMap.h"
#include "llvm/ADT/STLExtras.h"
#include "llvm/CodeGen/AsmPrinter.h"
@ -50,11 +49,6 @@ bool error(const Twine &Error, const Twine &Context) {
return false;
}
template <typename KeyT, typename ValT>
using HalfOpenIntervalMap =
IntervalMap<KeyT, ValT, IntervalMapImpl::NodeSizer<KeyT, ValT>::LeafSize,
IntervalMapHalfOpenInfo<KeyT>>;
/// \brief Stores all information relating to a compile unit, be it in
/// its original instance in the object file to its brand new cloned
/// and linked DIE tree.
@ -69,19 +63,15 @@ public:
bool InDebugMap; ///< Was this DIE's entity found in the map?
};
CompileUnit(DWARFUnit &OrigUnit)
: OrigUnit(OrigUnit), RangeAlloc(), Ranges(RangeAlloc) {
CompileUnit(DWARFUnit &OrigUnit) : OrigUnit(OrigUnit) {
Info.resize(OrigUnit.getNumDIEs());
}
// Workaround MSVC not supporting implicit move ops
CompileUnit(CompileUnit &&RHS)
: OrigUnit(RHS.OrigUnit), Info(std::move(RHS.Info)),
CUDie(std::move(RHS.CUDie)), StartOffset(RHS.StartOffset),
NextUnitOffset(RHS.NextUnitOffset), RangeAlloc(), Ranges(RangeAlloc) {
// The CompileUnit container has been 'reserve()'d with the right
// size. We cannot move the IntervalMap anyway.
llvm_unreachable("CompileUnits should not be moved.");
}
NextUnitOffset(RHS.NextUnitOffset) {}
DWARFUnit &getOrigUnit() const { return OrigUnit; }
@ -110,10 +100,6 @@ public:
/// \brief Apply all fixups recored by noteForwardReference().
void fixupForwardReferences();
/// \brief Add a function range [\p LowPC, \p HighPC) that is
/// relocatad by applying offset \p PCOffset.
void addFunctionRange(uint64_t LowPC, uint64_t HighPC, int64_t PCOffset);
private:
DWARFUnit &OrigUnit;
std::vector<DIEInfo> Info; ///< DIE info indexed by DIE index.
@ -129,12 +115,6 @@ private:
/// cloning because for forward refences the target DIE's offset isn't
/// known you emit the reference attribute.
std::vector<std::pair<DIE *, DIEInteger *>> ForwardDIEReferences;
HalfOpenIntervalMap<uint64_t, int64_t>::Allocator RangeAlloc;
/// \brief The ranges in that interval map are the PC ranges for
/// functions in this unit, associated with the PC offset to apply
/// to the addresses to get the linked address.
HalfOpenIntervalMap<uint64_t, int64_t> Ranges;
};
uint64_t CompileUnit::computeNextUnitOffset() {
@ -158,11 +138,6 @@ void CompileUnit::fixupForwardReferences() {
Ref.second->setValue(Ref.first->getOffset() + getStartOffset());
}
void CompileUnit::addFunctionRange(uint64_t LowPC, uint64_t HighPC,
int64_t PCOffset) {
Ranges.insert(LowPC, HighPC, PCOffset);
}
/// \brief A string table that doesn't need relocations.
///
/// We are doing a final link, no need for a string table that
@ -969,25 +944,7 @@ unsigned DwarfLinker::shouldKeepSubprogramDIE(
if (Options.Verbose)
DIE.dump(outs(), const_cast<DWARFUnit *>(&OrigUnit), 0, 8 /* Indent */);
Flags |= TF_Keep;
DWARFFormValue HighPcValue;
if (!DIE.getAttributeValue(&OrigUnit, dwarf::DW_AT_high_pc, HighPcValue)) {
reportWarning("Function without high_pc. Range will be discarded.\n",
&OrigUnit, &DIE);
return Flags;
}
uint64_t HighPc;
if (HighPcValue.isFormClass(DWARFFormValue::FC_Address)) {
HighPc = *HighPcValue.getAsAddress(&OrigUnit);
} else {
assert(HighPcValue.isFormClass(DWARFFormValue::FC_Constant));
HighPc = LowPc + *HighPcValue.getAsUnsignedConstant();
}
Unit.addFunctionRange(LowPc, HighPc, MyInfo.AddrAdjust);
return Flags;
return Flags | TF_Keep;
}
/// \brief Check if a DIE should be kept.