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Resubmit D85085 after fixing the tests that were failing.
D85085 was pushed earlier but broke tests on mac and win: http://lab.llvm.org:8080/green/job/clang-stage1-RA/21182/consoleFull#-706149783d489585b-5106-414a-ac11-3ff90657619c Recommitting it after adding mtriple to the llc commands. Emit correct location lists with basic block sections. This patch addresses multiple things: 1) It ensures that const_value is emitted when possible with basic block sections. 2) It emits location lists such that the labels are always within the section boundary. 3) It fixes a bug when the parameter is first used in a non-entry block which is in a different section from the entry block. Differential Revision: https://reviews.llvm.org/D85085
This commit is contained in:
Sriraman Tallam
parent
c06376acba
commit
f1e4168f92
@ -1357,11 +1357,9 @@ void AsmPrinter::emitFunctionBody() {
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// We must emit temporary symbol for the end of this basic block, if either
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// we have BBLabels enabled or if this basic blocks marks the end of a
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// section (except the section containing the entry basic block as the end
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// symbol for that section is CurrentFnEnd).
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// section.
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if (MF->hasBBLabels() ||
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(MAI->hasDotTypeDotSizeDirective() && MBB.isEndSection() &&
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!MBB.sameSection(&MF->front())))
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(MAI->hasDotTypeDotSizeDirective() && MBB.isEndSection()))
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OutStreamer->emitLabel(MBB.getEndSymbol());
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if (MBB.isEndSection()) {
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@ -290,16 +290,10 @@ void DebugHandlerBase::beginFunction(const MachineFunction *MF) {
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// doing that violates the ranges that are calculated in the history map.
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// However, we currently do not emit debug values for constant arguments
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// directly at the start of the function, so this code is still useful.
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// FIXME: If the first mention of an argument is in a unique section basic
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// block, we cannot always assign the CurrentFnBeginLabel as it lies in a
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// different section. Temporarily, we disable generating loc list
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// information or DW_AT_const_value when the block is in a different
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// section.
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const DILocalVariable *DIVar =
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Entries.front().getInstr()->getDebugVariable();
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if (DIVar->isParameter() &&
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getDISubprogram(DIVar->getScope())->describes(&MF->getFunction()) &&
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Entries.front().getInstr()->getParent()->sameSection(&MF->front())) {
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getDISubprogram(DIVar->getScope())->describes(&MF->getFunction())) {
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if (!IsDescribedByReg(Entries.front().getInstr()))
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LabelsBeforeInsn[Entries.front().getInstr()] = Asm->getFunctionBegin();
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if (Entries.front().getInstr()->getDebugExpression()->isFragment()) {
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@ -385,22 +379,25 @@ void DebugHandlerBase::endInstruction() {
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DenseMap<const MachineInstr *, MCSymbol *>::iterator I =
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LabelsAfterInsn.find(CurMI);
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CurMI = nullptr;
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// No label needed.
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if (I == LabelsAfterInsn.end())
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// No label needed or label already assigned.
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if (I == LabelsAfterInsn.end() || I->second) {
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CurMI = nullptr;
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return;
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}
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// Label already assigned.
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if (I->second)
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return;
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// We need a label after this instruction.
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if (!PrevLabel) {
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// We need a label after this instruction. With basic block sections, just
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// use the end symbol of the section if this is the last instruction of the
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// section. This reduces the need for an additional label and also helps
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// merging ranges.
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if (CurMI->getParent()->isEndSection() && CurMI->getNextNode() == nullptr) {
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PrevLabel = CurMI->getParent()->getEndSymbol();
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} else if (!PrevLabel) {
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PrevLabel = MMI->getContext().createTempSymbol();
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Asm->OutStreamer->emitLabel(PrevLabel);
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}
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I->second = PrevLabel;
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CurMI = nullptr;
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}
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void DebugHandlerBase::endFunction(const MachineFunction *MF) {
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@ -1741,7 +1741,30 @@ bool DwarfDebug::buildLocationList(SmallVectorImpl<DebugLocEntry> &DebugLoc,
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SmallVector<DbgValueLoc, 4> Values;
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for (auto &R : OpenRanges)
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Values.push_back(R.second);
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DebugLoc.emplace_back(StartLabel, EndLabel, Values);
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// With Basic block sections, it is posssible that the StartLabel and the
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// Instr are not in the same section. This happens when the StartLabel is
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// the function begin label and the dbg value appears in a basic block
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// that is not the entry. In this case, the range needs to be split to
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// span each individual section in the range from StartLabel to EndLabel.
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if (Asm->MF->hasBBSections() && StartLabel == Asm->getFunctionBegin() &&
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!Instr->getParent()->sameSection(&Asm->MF->front())) {
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const MCSymbol *BeginSectionLabel = StartLabel;
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for (const MachineBasicBlock &MBB : *Asm->MF) {
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if (MBB.isBeginSection() && &MBB != &Asm->MF->front())
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BeginSectionLabel = MBB.getSymbol();
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if (MBB.sameSection(Instr->getParent())) {
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DebugLoc.emplace_back(BeginSectionLabel, EndLabel, Values);
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break;
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}
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if (MBB.isEndSection())
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DebugLoc.emplace_back(BeginSectionLabel, MBB.getEndSymbol(), Values);
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}
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} else {
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DebugLoc.emplace_back(StartLabel, EndLabel, Values);
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}
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// Attempt to coalesce the ranges of two otherwise identical
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// DebugLocEntries.
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@ -1758,8 +1781,46 @@ bool DwarfDebug::buildLocationList(SmallVectorImpl<DebugLocEntry> &DebugLoc,
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DebugLoc.pop_back();
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}
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return DebugLoc.size() == 1 && isSafeForSingleLocation &&
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validThroughout(LScopes, StartDebugMI, EndMI, getInstOrdering());
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if (!isSafeForSingleLocation ||
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!validThroughout(LScopes, StartDebugMI, EndMI, getInstOrdering()))
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return false;
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if (DebugLoc.size() == 1)
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return true;
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if (!Asm->MF->hasBBSections())
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return false;
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// Check here to see if loclist can be merged into a single range. If not,
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// we must keep the split loclists per section. This does exactly what
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// MergeRanges does without sections. We don't actually merge the ranges
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// as the split ranges must be kept intact if this cannot be collapsed
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// into a single range.
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const MachineBasicBlock *RangeMBB = nullptr;
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if (DebugLoc[0].getBeginSym() == Asm->getFunctionBegin())
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RangeMBB = &Asm->MF->front();
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else
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RangeMBB = Entries.begin()->getInstr()->getParent();
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auto *CurEntry = DebugLoc.begin();
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auto *NextEntry = std::next(CurEntry);
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while (NextEntry != DebugLoc.end()) {
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// Get the last machine basic block of this section.
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while (!RangeMBB->isEndSection())
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RangeMBB = RangeMBB->getNextNode();
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if (!RangeMBB->getNextNode())
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return false;
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// CurEntry should end the current section and NextEntry should start
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// the next section and the Values must match for these two ranges to be
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// merged.
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if (CurEntry->getEndSym() != RangeMBB->getEndSymbol() ||
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NextEntry->getBeginSym() != RangeMBB->getNextNode()->getSymbol() ||
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CurEntry->getValues() != NextEntry->getValues())
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return false;
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RangeMBB = RangeMBB->getNextNode();
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CurEntry = NextEntry;
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NextEntry = std::next(CurEntry);
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}
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return true;
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}
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DbgEntity *DwarfDebug::createConcreteEntity(DwarfCompileUnit &TheCU,
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@ -0,0 +1,77 @@
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; RUN: llc %s -mtriple=x86_64-unknown-linux-gnu --dwarf-version=4 --basic-block-sections=none -filetype=obj -o - | llvm-dwarfdump - | FileCheck %s
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; RUN: llc %s -mtriple=x86_64-unknown-linux-gnu --dwarf-version=4 --basic-block-sections=all -filetype=obj -o - | llvm-dwarfdump - | FileCheck %s
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; RUN: llc %s -mtriple=x86_64-unknown-linux-gnu --dwarf-version=5 --basic-block-sections=none -filetype=obj -o - | llvm-dwarfdump - | FileCheck %s
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; RUN: llc %s -mtriple=x86_64-unknown-linux-gnu --dwarf-version=5 --basic-block-sections=all -filetype=obj -o - | llvm-dwarfdump - | FileCheck %s
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; CHECK: DW_TAG_variable
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; CHECK-NEXT: DW_AT_const_value (7)
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; CHECK-NEXT: DW_AT_name ("i")
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; Source to generate the IR below:
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; void f1();
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; extern bool b;
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; extern int x;
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; void test() {
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; // i is a const throughout the whole scope and should
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; // use DW_AT_const_value
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; int i = 7;
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; f1();
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; if (b)
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; f1();
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; }
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;
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; $ clang++ -S -emit-llvm -g -O2 simple.cc
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;
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@b = external dso_local local_unnamed_addr global i8, align 1
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define dso_local void @_Z4testv() local_unnamed_addr !dbg !7 {
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entry:
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call void @llvm.dbg.value(metadata i32 7, metadata !11, metadata !DIExpression()), !dbg !13
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tail call void @_Z2f1v(), !dbg !14
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%0 = load i8, i8* @b, align 1, !dbg !15, !tbaa !17, !range !21
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%tobool.not = icmp eq i8 %0, 0, !dbg !15
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br i1 %tobool.not, label %if.end, label %if.then, !dbg !22
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if.then: ; preds = %entry
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tail call void @_Z2f1v(), !dbg !23
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br label %if.end, !dbg !23
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if.end: ; preds = %if.then, %entry
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ret void, !dbg !24
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}
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declare !dbg !25 dso_local void @_Z2f1v() local_unnamed_addr
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declare void @llvm.dbg.value(metadata, metadata, metadata)
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!3, !4, !5}
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!llvm.ident = !{!6}
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!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus_14, file: !1, producer: "clang version 13.0.0 (git@github.com:llvm/llvm-project.git 593cb4655097552ac6d81ce18a2851ae0feb8d3c)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, splitDebugInlining: false, nameTableKind: None)
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!1 = !DIFile(filename: "simple.cc", directory: "/code")
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!2 = !{}
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!3 = !{i32 7, !"Dwarf Version", i32 4}
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!4 = !{i32 2, !"Debug Info Version", i32 3}
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!5 = !{i32 1, !"wchar_size", i32 4}
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!6 = !{!"clang version 13.0.0 (git@github.com:llvm/llvm-project.git 593cb4655097552ac6d81ce18a2851ae0feb8d3c)"}
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!7 = distinct !DISubprogram(name: "test", linkageName: "_Z4testv", scope: !1, file: !1, line: 5, type: !8, scopeLine: 5, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !10)
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!8 = !DISubroutineType(types: !9)
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!9 = !{null}
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!10 = !{!11}
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!11 = !DILocalVariable(name: "i", scope: !7, file: !1, line: 14, type: !12)
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!12 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
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!13 = !DILocation(line: 0, scope: !7)
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!14 = !DILocation(line: 15, column: 5, scope: !7)
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!15 = !DILocation(line: 16, column: 9, scope: !16)
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!16 = distinct !DILexicalBlock(scope: !7, file: !1, line: 16, column: 9)
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!17 = !{!18, !18, i64 0}
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!18 = !{!"bool", !19, i64 0}
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!19 = !{!"omnipotent char", !20, i64 0}
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!20 = !{!"Simple C++ TBAA"}
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!21 = !{i8 0, i8 2}
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!22 = !DILocation(line: 16, column: 9, scope: !7)
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!23 = !DILocation(line: 17, column: 7, scope: !16)
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!24 = !DILocation(line: 18, column: 1, scope: !7)
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!25 = !DISubprogram(name: "f1", linkageName: "_Z2f1v", scope: !1, file: !1, line: 1, type: !8, flags: DIFlagPrototyped, spFlags: DISPFlagOptimized, retainedNodes: !2)
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@ -0,0 +1,55 @@
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; RUN: llc %s -mtriple=x86_64-unknown-linux-gnu --dwarf-version=4 --basic-block-sections=none -filetype=obj -o - | llvm-dwarfdump - | FileCheck %s
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; RUN: llc %s -mtriple=x86_64-unknown-linux-gnu --dwarf-version=4 --basic-block-sections=all -filetype=obj -o - | llvm-dwarfdump - | FileCheck %s
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; RUN: llc %s -mtriple=x86_64-unknown-linux-gnu --dwarf-version=5 --basic-block-sections=none -filetype=obj -o - | llvm-dwarfdump - | FileCheck %s
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; RUN: llc %s -mtriple=x86_64-unknown-linux-gnu --dwarf-version=5 --basic-block-sections=all -filetype=obj -o - | llvm-dwarfdump - | FileCheck %s
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; CHECK: DW_TAG_variable
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; CHECK-NEXT: DW_AT_const_value (7)
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; CHECK-NEXT: DW_AT_name ("i")
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; void f1();
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; void test() {
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; // constant value with a single location description
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; // Shouldn't change with BB-sections
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; int i = 7;
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; f1();
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; }
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; $ clang++ -S -emit-llvm -g -O2 const_value_2.cc
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define dso_local void @_Z4testv() local_unnamed_addr !dbg !7 {
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entry:
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call void @llvm.dbg.value(metadata i32 7, metadata !11, metadata !DIExpression()), !dbg !13
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tail call void @_Z2f1v(), !dbg !14
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ret void, !dbg !15
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}
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declare !dbg !16 dso_local void @_Z2f1v() local_unnamed_addr
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; Function Attrs: nofree nosync nounwind readnone speculatable willreturn
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declare void @llvm.dbg.value(metadata, metadata, metadata)
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!3, !4, !5}
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!llvm.ident = !{!6}
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!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus_14, file: !1, producer: "clang version 13.0.0 (git@github.com:llvm/llvm-project.git 593cb4655097552ac6d81ce18a2851ae0feb8d3c)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, splitDebugInlining: false, nameTableKind: None)
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!1 = !DIFile(filename: "const_value_2.cc", directory: "/code")
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!2 = !{}
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!3 = !{i32 7, !"Dwarf Version", i32 4}
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!4 = !{i32 2, !"Debug Info Version", i32 3}
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!5 = !{i32 1, !"wchar_size", i32 4}
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!6 = !{!"clang version 13.0.0 (git@github.com:llvm/llvm-project.git 593cb4655097552ac6d81ce18a2851ae0feb8d3c)"}
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!7 = distinct !DISubprogram(name: "test", linkageName: "_Z4testv", scope: !1, file: !1, line: 5, type: !8, scopeLine: 5, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !10)
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!8 = !DISubroutineType(types: !9)
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!9 = !{null}
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!10 = !{!11}
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!11 = !DILocalVariable(name: "i", scope: !7, file: !1, line: 8, type: !12)
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!12 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
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!13 = !DILocation(line: 0, scope: !7)
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!14 = !DILocation(line: 9, column: 3, scope: !7)
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!15 = !DILocation(line: 10, column: 1, scope: !7)
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!16 = !DISubprogram(name: "f1", linkageName: "_Z2f1v", scope: !1, file: !1, line: 1, type: !8, flags: DIFlagPrototyped, spFlags: DISPFlagOptimized, retainedNodes: !2)
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@ -0,0 +1,86 @@
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; RUN: llc %s -mtriple=x86_64-unknown-linux-gnu --dwarf-version=4 --basic-block-sections=none -filetype=obj -o - | llvm-dwarfdump - | FileCheck %s
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; RUN: llc %s -mtriple=x86_64-unknown-linux-gnu --dwarf-version=4 --basic-block-sections=all -filetype=obj -o - | llvm-dwarfdump - | FileCheck %s --check-prefix=CHECK --check-prefix=SECTIONS
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; RUN: llc %s -mtriple=x86_64-unknown-linux-gnu --dwarf-version=5 --basic-block-sections=none -filetype=obj -o - | llvm-dwarfdump - | FileCheck %s
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; RUN: llc %s -mtriple=x86_64-unknown-linux-gnu --dwarf-version=5 --basic-block-sections=all -filetype=obj -o - | llvm-dwarfdump - | FileCheck %s --check-prefix=CHECK --check-prefix=SECTIONS
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; CHECK: DW_AT_location
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; CHECK-NEXT: [0x{{[0-9a-f]+}}, 0x{{[0-9a-f]+}}): DW_OP_constu 0x9d, DW_OP_stack_value
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; SECTIONS: [0x{{[0-9a-f]+}}, 0x{{[0-9a-f]+}}): DW_OP_constu 0x9d, DW_OP_stack_value
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; SECTIONS-NEXT: [0x{{[0-9a-f]+}}, 0x{{[0-9a-f]+}}): DW_OP_constu 0x9d, DW_OP_stack_value
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; CHECK-NEXT: [0x{{[0-9a-f]+}}, 0x{{[0-9a-f]+}}): DW_OP_constu 0x9f, DW_OP_stack_value
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; CHECK-NEXT: DW_AT_name ("buflen")
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|
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; This IR is generated by copying basic-block-sections-debug-loc.ll and
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; manually adding one more dbg value in block 2 and modifying the value.
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; With just one dbg value a DW_AT_const_val would be emitted, so we add
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; one more dbg value with a different value to split the ranges.
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; The extra dbg value is added to split the range and to check if the
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; ranges are split correctly with sections. With basic block sections,
|
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; the dbg value 157 (0x9d) gets split into one more range.
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||||
|
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define dso_local void @_ZL4ncatPcjz(i8* %0, i32 %1, ...) unnamed_addr align 32 !dbg !22 {
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.critedge3:
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call void @llvm.dbg.value(metadata i32 157, metadata !27, metadata !DIExpression()), !dbg !46
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call void @llvm.va_start(i8* nonnull undef), !dbg !47
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br label %2
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2: ; preds = %2, %.critedge3
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call void @llvm.dbg.value(metadata i32 159, metadata !27, metadata !DIExpression()), !dbg !46
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br label %2
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}
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declare void @llvm.va_start(i8*)
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declare void @llvm.dbg.value(metadata, metadata, metadata)
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!llvm.dbg.cu = !{!0}
|
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!llvm.module.flags = !{!20, !21}
|
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|
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!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus_14, file: !1, producer: "clang", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, retainedTypes: !2)
|
||||
!1 = !DIFile(filename: "bug.cpp", directory: "/proc/self/cwd")
|
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!2 = !{!3, !6, !9, !10, !11, !13, !16, !17, !15}
|
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!3 = !DIDerivedType(tag: DW_TAG_typedef, name: "int32_t", file: !4, line: 38, baseType: !5)
|
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!4 = !DIFile(filename: "stdint.h", directory: "/proc/self/cwd")
|
||||
!5 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
|
||||
!6 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !7, size: 64)
|
||||
!7 = !DIDerivedType(tag: DW_TAG_const_type, baseType: !8)
|
||||
!8 = !DIBasicType(name: "char", size: 8, encoding: DW_ATE_unsigned_char)
|
||||
!9 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !8, size: 64)
|
||||
!10 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: null, size: 64)
|
||||
!11 = !DIDerivedType(tag: DW_TAG_typedef, name: "uint32_t", file: !4, line: 51, baseType: !12)
|
||||
!12 = !DIBasicType(name: "unsigned int", size: 32, encoding: DW_ATE_unsigned)
|
||||
!13 = !DIDerivedType(tag: DW_TAG_typedef, name: "UChar", file: !14, line: 372, baseType: !15)
|
||||
!14 = !DIFile(filename: "umachine.h", directory: "/proc/self/cwd")
|
||||
!15 = !DIBasicType(name: "char16_t", size: 16, encoding: DW_ATE_UTF)
|
||||
!16 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !3, size: 64)
|
||||
!17 = !DIDerivedType(tag: DW_TAG_typedef, name: "UBool", file: !14, line: 261, baseType: !18)
|
||||
!18 = !DIDerivedType(tag: DW_TAG_typedef, name: "int8_t", file: !4, line: 36, baseType: !19)
|
||||
!19 = !DIBasicType(name: "signed char", size: 8, encoding: DW_ATE_signed_char)
|
||||
!20 = !{i32 2, !"Debug Info Version", i32 3}
|
||||
!21 = !{i32 7, !"PIC Level", i32 2}
|
||||
!22 = distinct !DISubprogram(name: "ncat", linkageName: "_ZL4ncatPcjz", scope: !1, file: !1, line: 37, type: !23, scopeLine: 37, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagLocalToUnit | DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !25)
|
||||
!23 = !DISubroutineType(types: !24)
|
||||
!24 = !{!3, !9, !11, null}
|
||||
!25 = !{!26, !27, !28, !41, !42, !43, !44}
|
||||
!26 = !DILocalVariable(name: "buffer", arg: 1, scope: !22, file: !1, line: 37, type: !9)
|
||||
!27 = !DILocalVariable(name: "buflen", arg: 2, scope: !22, file: !1, line: 37, type: !11)
|
||||
!28 = !DILocalVariable(name: "args", scope: !22, file: !1, line: 38, type: !29)
|
||||
!29 = !DIDerivedType(tag: DW_TAG_typedef, name: "va_list", file: !30, line: 14, baseType: !31)
|
||||
!30 = !DIFile(filename: "stdarg.h", directory: "/proc/self/cwd")
|
||||
!31 = !DIDerivedType(tag: DW_TAG_typedef, name: "__builtin_va_list", file: !1, line: 38, baseType: !32)
|
||||
!32 = !DICompositeType(tag: DW_TAG_array_type, baseType: !33, size: 192, elements: !39)
|
||||
!33 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "__va_list_tag", file: !1, line: 38, size: 192, flags: DIFlagTypePassByValue, elements: !34, identifier: "_ZTS13__va_list_tag")
|
||||
!34 = !{!35, !36, !37, !38}
|
||||
!35 = !DIDerivedType(tag: DW_TAG_member, name: "gp_offset", scope: !33, file: !1, line: 38, baseType: !12, size: 32)
|
||||
!36 = !DIDerivedType(tag: DW_TAG_member, name: "fp_offset", scope: !33, file: !1, line: 38, baseType: !12, size: 32, offset: 32)
|
||||
!37 = !DIDerivedType(tag: DW_TAG_member, name: "overflow_arg_area", scope: !33, file: !1, line: 38, baseType: !10, size: 64, offset: 64)
|
||||
!38 = !DIDerivedType(tag: DW_TAG_member, name: "reg_save_area", scope: !33, file: !1, line: 38, baseType: !10, size: 64, offset: 128)
|
||||
!39 = !{!40}
|
||||
!40 = !DISubrange(count: 1)
|
||||
!41 = !DILocalVariable(name: "str", scope: !22, file: !1, line: 39, type: !9)
|
||||
!42 = !DILocalVariable(name: "p", scope: !22, file: !1, line: 40, type: !9)
|
||||
!43 = !DILocalVariable(name: "e", scope: !22, file: !1, line: 41, type: !6)
|
||||
!44 = !DILocalVariable(name: "c", scope: !45, file: !1, line: 49, type: !8)
|
||||
!45 = distinct !DILexicalBlock(scope: !22, file: !1, line: 48, column: 45)
|
||||
!46 = !DILocation(line: 0, scope: !22)
|
||||
!47 = !DILocation(line: 47, column: 3, scope: !22)
|
||||
@ -1,19 +1,17 @@
|
||||
;; The dbg value for buflen in the non-entry basic block spans the entire
|
||||
;; function and is emitted as DW_AT_const_value. Even with basic block
|
||||
;; sections, this can be done as the entire function is represented as ranges.
|
||||
;; FIXME: Basic block sections should have the same behavior as the default.
|
||||
|
||||
; RUN: llc %s --dwarf-version=4 --basic-block-sections=none -filetype=obj -o %t
|
||||
; RUN: llvm-dwarfdump %t | FileCheck %s
|
||||
; RUN: llc %s --dwarf-version=4 --basic-block-sections=all -filetype=obj -o %t
|
||||
; RUN: llvm-dwarfdump %t | FileCheck --check-prefix=MISSING %s
|
||||
; RUN: llc %s -mtriple=x86_64-unknown-linux-gnu --dwarf-version=4 --basic-block-sections=none -filetype=obj -o - | llvm-dwarfdump - | FileCheck %s
|
||||
; RUN: llc %s -mtriple=x86_64-unknown-linux-gnu --dwarf-version=4 --basic-block-sections=all -filetype=obj -o - | llvm-dwarfdump - | FileCheck %s
|
||||
; RUN: llc %s -mtriple=x86_64-unknown-linux-gnu --dwarf-version=5 --basic-block-sections=none -filetype=obj -o - | llvm-dwarfdump - | FileCheck %s
|
||||
; RUN: llc %s -mtriple=x86_64-unknown-linux-gnu --dwarf-version=5 --basic-block-sections=all -filetype=obj -o - | llvm-dwarfdump - | FileCheck %s
|
||||
|
||||
; CHECK: DW_AT_const_value (157)
|
||||
; CHECK-NEXT: DW_AT_name ("buflen")
|
||||
; MISSING-NOT: DW_AT_const_value (157)
|
||||
|
||||
target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
|
||||
target triple = "x86_64-grtev4-linux-gnu"
|
||||
;; We do not have the source to reproduce this as this was IR was obtained
|
||||
;; using a reducer from a failing compile.
|
||||
|
||||
define dso_local void @_ZL4ncatPcjz(i8* %0, i32 %1, ...) unnamed_addr align 32 !dbg !22 {
|
||||
.critedge3:
|
||||
@ -25,14 +23,9 @@ define dso_local void @_ZL4ncatPcjz(i8* %0, i32 %1, ...) unnamed_addr align 32
|
||||
br label %2
|
||||
}
|
||||
|
||||
; Function Attrs: nounwind
|
||||
declare void @llvm.va_start(i8*) #1
|
||||
declare void @llvm.va_start(i8*)
|
||||
|
||||
; Function Attrs: nounwind readnone speculatable willreturn
|
||||
declare void @llvm.dbg.value(metadata, metadata, metadata) #2
|
||||
|
||||
attributes #1 = { nounwind }
|
||||
attributes #2 = { nounwind readnone speculatable willreturn }
|
||||
declare void @llvm.dbg.value(metadata, metadata, metadata)
|
||||
|
||||
!llvm.dbg.cu = !{!0}
|
||||
!llvm.module.flags = !{!20, !21}
|
||||
|
||||
91
test/DebugInfo/X86/basic-block-sections-debug-loclist-1.ll
Normal file
91
test/DebugInfo/X86/basic-block-sections-debug-loclist-1.ll
Normal file
@ -0,0 +1,91 @@
|
||||
; RUN: llc %s -mtriple=x86_64-unknown-linux-gnu --dwarf-version=4 --basic-block-sections=none -filetype=obj -o - | llvm-dwarfdump - | FileCheck %s
|
||||
; RUN: llc %s -mtriple=x86_64-unknown-linux-gnu --dwarf-version=4 --basic-block-sections=all -filetype=obj -o - | llvm-dwarfdump - | FileCheck %s
|
||||
; RUN: llc %s -mtriple=x86_64-unknown-linux-gnu --dwarf-version=5 --basic-block-sections=none -filetype=obj -o - | llvm-dwarfdump - | FileCheck %s
|
||||
; RUN: llc %s -mtriple=x86_64-unknown-linux-gnu --dwarf-version=5 --basic-block-sections=all -filetype=obj -o - | llvm-dwarfdump - | FileCheck %s
|
||||
|
||||
; CHECK: DW_TAG_variable
|
||||
; CHECK-NEXT: DW_AT_location
|
||||
; CHECK-NEXT: [0x{{[0-9a-f]+}}, 0x{{[0-9a-f]+}}): DW_OP_consts +7, DW_OP_stack_value
|
||||
; CHECK-NEXT: [0x{{[0-9a-f]+}}, 0x{{[0-9a-f]+}}): DW_OP_consts +9, DW_OP_stack_value
|
||||
; CHECK-NEXT: [0x{{[0-9a-f]+}}, 0x{{[0-9a-f]+}}): DW_OP_consts +7, DW_OP_stack_value
|
||||
; CHECK-NEXT: DW_AT_name ("i")
|
||||
|
||||
; Source to generate the IR below:
|
||||
; void f1();
|
||||
; int f2(int);
|
||||
; extern bool b;
|
||||
; extern int x;
|
||||
; void test() {
|
||||
; // Value is either 7 or 9 so DW_AT_const_value cannot be used and 3 loc
|
||||
; // list entries have to be generated.
|
||||
; int i = 7;
|
||||
; f1();
|
||||
; if (b) {
|
||||
; i += 2;
|
||||
; f2(i);
|
||||
; }
|
||||
; }
|
||||
; $ clang++ -S -emit-llvm -g -O2 loclist_1.cc
|
||||
;
|
||||
|
||||
@b = external dso_local local_unnamed_addr global i8, align 1
|
||||
|
||||
define dso_local void @_Z4testv() local_unnamed_addr !dbg !7 {
|
||||
entry:
|
||||
call void @llvm.dbg.value(metadata i32 7, metadata !11, metadata !DIExpression()), !dbg !13
|
||||
tail call void @_Z2f1v(), !dbg !14
|
||||
%0 = load i8, i8* @b, align 1, !dbg !15, !tbaa !17, !range !21
|
||||
%tobool.not = icmp eq i8 %0, 0, !dbg !15
|
||||
br i1 %tobool.not, label %if.end, label %if.then, !dbg !22
|
||||
|
||||
if.then: ; preds = %entry
|
||||
call void @llvm.dbg.value(metadata i32 9, metadata !11, metadata !DIExpression()), !dbg !13
|
||||
%call = tail call i32 @_Z2f2i(i32 9), !dbg !23
|
||||
br label %if.end, !dbg !25
|
||||
|
||||
if.end: ; preds = %if.then, %entry
|
||||
ret void, !dbg !26
|
||||
}
|
||||
|
||||
declare !dbg !27 dso_local void @_Z2f1v() local_unnamed_addr
|
||||
|
||||
declare !dbg !28 dso_local i32 @_Z2f2i(i32) local_unnamed_addr
|
||||
|
||||
; Function Attrs: nofree nosync nounwind readnone speculatable willreturn
|
||||
declare void @llvm.dbg.value(metadata, metadata, metadata) #2
|
||||
|
||||
!llvm.dbg.cu = !{!0}
|
||||
!llvm.module.flags = !{!3, !4, !5}
|
||||
!llvm.ident = !{!6}
|
||||
|
||||
!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus_14, file: !1, producer: "clang version 13.0.0 (git@github.com:llvm/llvm-project.git 593cb4655097552ac6d81ce18a2851ae0feb8d3c)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, splitDebugInlining: false, nameTableKind: None)
|
||||
!1 = !DIFile(filename: "loclist_1.cc", directory: "/code")
|
||||
!2 = !{}
|
||||
!3 = !{i32 7, !"Dwarf Version", i32 4}
|
||||
!4 = !{i32 2, !"Debug Info Version", i32 3}
|
||||
!5 = !{i32 1, !"wchar_size", i32 4}
|
||||
!6 = !{!"clang version 13.0.0 (git@github.com:llvm/llvm-project.git 593cb4655097552ac6d81ce18a2851ae0feb8d3c)"}
|
||||
!7 = distinct !DISubprogram(name: "test", linkageName: "_Z4testv", scope: !1, file: !1, line: 5, type: !8, scopeLine: 5, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !10)
|
||||
!8 = !DISubroutineType(types: !9)
|
||||
!9 = !{null}
|
||||
!10 = !{!11}
|
||||
!11 = !DILocalVariable(name: "i", scope: !7, file: !1, line: 14, type: !12)
|
||||
!12 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
|
||||
!13 = !DILocation(line: 0, scope: !7)
|
||||
!14 = !DILocation(line: 15, column: 5, scope: !7)
|
||||
!15 = !DILocation(line: 16, column: 9, scope: !16)
|
||||
!16 = distinct !DILexicalBlock(scope: !7, file: !1, line: 16, column: 9)
|
||||
!17 = !{!18, !18, i64 0}
|
||||
!18 = !{!"bool", !19, i64 0}
|
||||
!19 = !{!"omnipotent char", !20, i64 0}
|
||||
!20 = !{!"Simple C++ TBAA"}
|
||||
!21 = !{i8 0, i8 2}
|
||||
!22 = !DILocation(line: 16, column: 9, scope: !7)
|
||||
!23 = !DILocation(line: 18, column: 7, scope: !24)
|
||||
!24 = distinct !DILexicalBlock(scope: !16, file: !1, line: 16, column: 12)
|
||||
!25 = !DILocation(line: 19, column: 5, scope: !24)
|
||||
!26 = !DILocation(line: 20, column: 1, scope: !7)
|
||||
!27 = !DISubprogram(name: "f1", linkageName: "_Z2f1v", scope: !1, file: !1, line: 1, type: !8, flags: DIFlagPrototyped, spFlags: DISPFlagOptimized, retainedNodes: !2)
|
||||
!28 = !DISubprogram(name: "f2", linkageName: "_Z2f2i", scope: !1, file: !1, line: 2, type: !29, flags: DIFlagPrototyped, spFlags: DISPFlagOptimized, retainedNodes: !2)
|
||||
!29 = !DISubroutineType(types: !30)
|
||||
!30 = !{!12, !12}
|
||||
96
test/DebugInfo/X86/basic-block-sections-debug-loclist-2.ll
Normal file
96
test/DebugInfo/X86/basic-block-sections-debug-loclist-2.ll
Normal file
@ -0,0 +1,96 @@
|
||||
; RUN: llc %s -mtriple=x86_64-unknown-linux-gnu --dwarf-version=4 --basic-block-sections=none -filetype=obj -o - | llvm-dwarfdump - | FileCheck %s
|
||||
; RUN: llc %s -mtriple=x86_64-unknown-linux-gnu --dwarf-version=4 --basic-block-sections=all -filetype=obj -o - | llvm-dwarfdump - | FileCheck %s --check-prefix=CHECK --check-prefix=SECTIONS
|
||||
; RUN: llc %s -mtriple=x86_64-unknown-linux-gnu --dwarf-version=5 --basic-block-sections=none -filetype=obj -o - | llvm-dwarfdump - | FileCheck %s
|
||||
; RUN: llc %s -mtriple=x86_64-unknown-linux-gnu --dwarf-version=5 --basic-block-sections=all -filetype=obj -o - | llvm-dwarfdump - | FileCheck %s --check-prefix=CHECK --check-prefix=SECTIONS
|
||||
|
||||
; CHECK: DW_TAG_variable
|
||||
; CHECK-NEXT: DW_AT_location
|
||||
; CHECK-NEXT: [0x{{[0-9a-f]+}}, 0x{{[0-9a-f]+}}): DW_OP_consts +7, DW_OP_stack_value
|
||||
; SECTIONS-NEXT: [0x{{[0-9a-f]+}}, 0x{{[0-9a-f]+}}): DW_OP_consts +7, DW_OP_stack_value
|
||||
; CHECK-NEXT: [0x{{[0-9a-f]+}}, 0x{{[0-9a-f]+}}): DW_OP_consts +9, DW_OP_stack_value
|
||||
; CHECK-NEXT: [0x{{[0-9a-f]+}}, 0x{{[0-9a-f]+}}): DW_OP_consts +7, DW_OP_stack_value
|
||||
; CHECK-NEXT: DW_AT_name ("i")
|
||||
|
||||
; Source to generate the IR below:
|
||||
; void f1();
|
||||
; int f2(int);
|
||||
; extern bool b;
|
||||
; extern int x;
|
||||
; void test() {
|
||||
; // i's value is 7 for the first call in in the if block. With basic
|
||||
; // block sections, this would split the range across sections and would
|
||||
; // result in an extra entry than without sections.
|
||||
; int i = 7;
|
||||
; f1();
|
||||
; if (b) {
|
||||
; f2(i);
|
||||
; i += 2;
|
||||
; f2(i);
|
||||
; }
|
||||
; }
|
||||
; $ clang++ -S -emit-llvm -g -O2 loclist_2.cc
|
||||
;
|
||||
|
||||
@b = external dso_local local_unnamed_addr global i8, align 1
|
||||
|
||||
define dso_local void @_Z4testv() local_unnamed_addr !dbg !7 {
|
||||
entry:
|
||||
call void @llvm.dbg.value(metadata i32 7, metadata !11, metadata !DIExpression()), !dbg !13
|
||||
tail call void @_Z2f1v(), !dbg !14
|
||||
%0 = load i8, i8* @b, align 1, !dbg !15, !tbaa !17, !range !21
|
||||
%tobool.not = icmp eq i8 %0, 0, !dbg !15
|
||||
br i1 %tobool.not, label %if.end, label %if.then, !dbg !22
|
||||
|
||||
if.then: ; preds = %entry
|
||||
%call = tail call i32 @_Z2f2i(i32 7), !dbg !23
|
||||
call void @llvm.dbg.value(metadata i32 9, metadata !11, metadata !DIExpression()), !dbg !13
|
||||
%call1 = tail call i32 @_Z2f2i(i32 9), !dbg !25
|
||||
br label %if.end, !dbg !26
|
||||
|
||||
if.end: ; preds = %if.then, %entry
|
||||
ret void, !dbg !27
|
||||
}
|
||||
|
||||
declare !dbg !28 dso_local void @_Z2f1v() local_unnamed_addr
|
||||
|
||||
declare !dbg !29 dso_local i32 @_Z2f2i(i32) local_unnamed_addr
|
||||
|
||||
; Function Attrs: nofree nosync nounwind readnone speculatable willreturn
|
||||
declare void @llvm.dbg.value(metadata, metadata, metadata) #2
|
||||
|
||||
!llvm.dbg.cu = !{!0}
|
||||
!llvm.module.flags = !{!3, !4, !5}
|
||||
!llvm.ident = !{!6}
|
||||
|
||||
!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus_14, file: !1, producer: "clang version 13.0.0 (git@github.com:llvm/llvm-project.git 593cb4655097552ac6d81ce18a2851ae0feb8d3c)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, splitDebugInlining: false, nameTableKind: None)
|
||||
!1 = !DIFile(filename: "loclist_2.cc", directory: "/code")
|
||||
!2 = !{}
|
||||
!3 = !{i32 7, !"Dwarf Version", i32 4}
|
||||
!4 = !{i32 2, !"Debug Info Version", i32 3}
|
||||
!5 = !{i32 1, !"wchar_size", i32 4}
|
||||
!6 = !{!"clang version 13.0.0 (git@github.com:llvm/llvm-project.git 593cb4655097552ac6d81ce18a2851ae0feb8d3c)"}
|
||||
!7 = distinct !DISubprogram(name: "test", linkageName: "_Z4testv", scope: !1, file: !1, line: 5, type: !8, scopeLine: 5, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !10)
|
||||
!8 = !DISubroutineType(types: !9)
|
||||
!9 = !{null}
|
||||
!10 = !{!11}
|
||||
!11 = !DILocalVariable(name: "i", scope: !7, file: !1, line: 14, type: !12)
|
||||
!12 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
|
||||
!13 = !DILocation(line: 0, scope: !7)
|
||||
!14 = !DILocation(line: 15, column: 5, scope: !7)
|
||||
!15 = !DILocation(line: 16, column: 9, scope: !16)
|
||||
!16 = distinct !DILexicalBlock(scope: !7, file: !1, line: 16, column: 9)
|
||||
!17 = !{!18, !18, i64 0}
|
||||
!18 = !{!"bool", !19, i64 0}
|
||||
!19 = !{!"omnipotent char", !20, i64 0}
|
||||
!20 = !{!"Simple C++ TBAA"}
|
||||
!21 = !{i8 0, i8 2}
|
||||
!22 = !DILocation(line: 16, column: 9, scope: !7)
|
||||
!23 = !DILocation(line: 17, column: 7, scope: !24)
|
||||
!24 = distinct !DILexicalBlock(scope: !16, file: !1, line: 16, column: 12)
|
||||
!25 = !DILocation(line: 19, column: 7, scope: !24)
|
||||
!26 = !DILocation(line: 20, column: 5, scope: !24)
|
||||
!27 = !DILocation(line: 21, column: 1, scope: !7)
|
||||
!28 = !DISubprogram(name: "f1", linkageName: "_Z2f1v", scope: !1, file: !1, line: 1, type: !8, flags: DIFlagPrototyped, spFlags: DISPFlagOptimized, retainedNodes: !2)
|
||||
!29 = !DISubprogram(name: "f2", linkageName: "_Z2f2i", scope: !1, file: !1, line: 2, type: !30, flags: DIFlagPrototyped, spFlags: DISPFlagOptimized, retainedNodes: !2)
|
||||
!30 = !DISubroutineType(types: !31)
|
||||
!31 = !{!12, !12}
|
||||
74
test/DebugInfo/X86/basic-block-sections-debug-loclist-3.ll
Normal file
74
test/DebugInfo/X86/basic-block-sections-debug-loclist-3.ll
Normal file
@ -0,0 +1,74 @@
|
||||
; RUN: llc %s -mtriple=x86_64-unknown-linux-gnu --dwarf-version=4 --basic-block-sections=none -filetype=obj -o - | llvm-dwarfdump - | FileCheck %s
|
||||
; RUN: llc %s -mtriple=x86_64-unknown-linux-gnu --dwarf-version=4 --basic-block-sections=all -filetype=obj -o - | llvm-dwarfdump - | FileCheck %s
|
||||
; RUN: llc %s -mtriple=x86_64-unknown-linux-gnu --dwarf-version=5 --basic-block-sections=none -filetype=obj -o - | llvm-dwarfdump - | FileCheck %s
|
||||
; RUN: llc %s -mtriple=x86_64-unknown-linux-gnu --dwarf-version=5 --basic-block-sections=all -filetype=obj -o - | llvm-dwarfdump - | FileCheck %s
|
||||
|
||||
; CHECK: DW_TAG_variable
|
||||
; CHECK-NEXT: DW_AT_location
|
||||
; CHECK-NEXT: [0x{{[0-9a-f]+}}, 0x{{[0-9a-f]+}}): DW_OP_reg3
|
||||
; CHECK-NEXT: DW_AT_name ("i")
|
||||
|
||||
; Source to generate the IR below:
|
||||
; void f1();
|
||||
; int f2();
|
||||
; extern int x;
|
||||
; void test() {
|
||||
; int tmp = f2();
|
||||
; // non-constant value with a single location description
|
||||
; // Shouldn't change with BB-sections
|
||||
; int i = tmp;
|
||||
; f1();
|
||||
; x = i;
|
||||
; }
|
||||
; $ clang++ -S -emit-llvm -g -O2 loclist_2.cc
|
||||
|
||||
|
||||
@x = external dso_local local_unnamed_addr global i32, align 4
|
||||
|
||||
define dso_local void @_Z4testv() local_unnamed_addr !dbg !7 {
|
||||
entry:
|
||||
%call = tail call i32 @_Z2f2v(), !dbg !14
|
||||
call void @llvm.dbg.value(metadata i32 %call, metadata !11, metadata !DIExpression()), !dbg !15
|
||||
call void @llvm.dbg.value(metadata i32 %call, metadata !13, metadata !DIExpression()), !dbg !15
|
||||
tail call void @_Z2f1v(), !dbg !16
|
||||
store i32 %call, i32* @x, align 4, !dbg !17, !tbaa !18
|
||||
ret void, !dbg !22
|
||||
}
|
||||
|
||||
declare !dbg !23 dso_local i32 @_Z2f2v() local_unnamed_addr
|
||||
|
||||
declare !dbg !26 dso_local void @_Z2f1v() local_unnamed_addr
|
||||
|
||||
declare void @llvm.dbg.value(metadata, metadata, metadata)
|
||||
|
||||
!llvm.dbg.cu = !{!0}
|
||||
!llvm.module.flags = !{!3, !4, !5}
|
||||
!llvm.ident = !{!6}
|
||||
|
||||
!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus_14, file: !1, producer: "clang version 13.0.0 (git@github.com:llvm/llvm-project.git 593cb4655097552ac6d81ce18a2851ae0feb8d3c)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, splitDebugInlining: false, nameTableKind: None)
|
||||
!1 = !DIFile(filename: "loclist_3.cc", directory: "/code")
|
||||
!2 = !{}
|
||||
!3 = !{i32 7, !"Dwarf Version", i32 4}
|
||||
!4 = !{i32 2, !"Debug Info Version", i32 3}
|
||||
!5 = !{i32 1, !"wchar_size", i32 4}
|
||||
!6 = !{!"clang version 13.0.0 (git@github.com:llvm/llvm-project.git 593cb4655097552ac6d81ce18a2851ae0feb8d3c)"}
|
||||
!7 = distinct !DISubprogram(name: "test", linkageName: "_Z4testv", scope: !1, file: !1, line: 4, type: !8, scopeLine: 4, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !10)
|
||||
!8 = !DISubroutineType(types: !9)
|
||||
!9 = !{null}
|
||||
!10 = !{!11, !13}
|
||||
!11 = !DILocalVariable(name: "tmp", scope: !7, file: !1, line: 5, type: !12)
|
||||
!12 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
|
||||
!13 = !DILocalVariable(name: "i", scope: !7, file: !1, line: 8, type: !12)
|
||||
!14 = !DILocation(line: 5, column: 13, scope: !7)
|
||||
!15 = !DILocation(line: 0, scope: !7)
|
||||
!16 = !DILocation(line: 9, column: 3, scope: !7)
|
||||
!17 = !DILocation(line: 10, column: 5, scope: !7)
|
||||
!18 = !{!19, !19, i64 0}
|
||||
!19 = !{!"int", !20, i64 0}
|
||||
!20 = !{!"omnipotent char", !21, i64 0}
|
||||
!21 = !{!"Simple C++ TBAA"}
|
||||
!22 = !DILocation(line: 11, column: 1, scope: !7)
|
||||
!23 = !DISubprogram(name: "f2", linkageName: "_Z2f2v", scope: !1, file: !1, line: 2, type: !24, flags: DIFlagPrototyped, spFlags: DISPFlagOptimized, retainedNodes: !2)
|
||||
!24 = !DISubroutineType(types: !25)
|
||||
!25 = !{!12}
|
||||
!26 = !DISubprogram(name: "f1", linkageName: "_Z2f1v", scope: !1, file: !1, line: 1, type: !8, flags: DIFlagPrototyped, spFlags: DISPFlagOptimized, retainedNodes: !2)
|
||||
66
test/DebugInfo/X86/basic-block-sections-debug-loclist-4.ll
Normal file
66
test/DebugInfo/X86/basic-block-sections-debug-loclist-4.ll
Normal file
@ -0,0 +1,66 @@
|
||||
; RUN: llc %s -mtriple=x86_64-unknown-linux-gnu --dwarf-version=4 --basic-block-sections=none -filetype=obj -o - | llvm-dwarfdump - | FileCheck %s
|
||||
; RUN: llc %s -mtriple=x86_64-unknown-linux-gnu --dwarf-version=4 --basic-block-sections=all -filetype=obj -o - | llvm-dwarfdump - | FileCheck %s
|
||||
; RUN: llc %s -mtriple=x86_64-unknown-linux-gnu --dwarf-version=5 --basic-block-sections=none -filetype=obj -o - | llvm-dwarfdump - | FileCheck %s
|
||||
; RUN: llc %s -mtriple=x86_64-unknown-linux-gnu --dwarf-version=5 --basic-block-sections=all -filetype=obj -o - | llvm-dwarfdump - | FileCheck %s
|
||||
|
||||
; CHECK: DW_TAG_variable
|
||||
; CHECK-NEXT: DW_AT_location
|
||||
; CHECK-NEXT: [0x{{[0-9a-f]+}}, 0x{{[0-9a-f]+}}): DW_OP_consts +7, DW_OP_stack_value)
|
||||
; CHECK-NEXT: DW_AT_name ("i")
|
||||
|
||||
; Source to generate the IR below:
|
||||
; void f1();
|
||||
; int f2();
|
||||
; void test() {
|
||||
; // constant value through partial scope, no BB boundary
|
||||
; // Shouldn't change with BB-sections
|
||||
; int i = 7;
|
||||
; f1();
|
||||
; i = f2();
|
||||
; f1();
|
||||
; }
|
||||
;
|
||||
; $ clang++ -S -emit-llvm -g -O2 loclist_4.cc
|
||||
|
||||
define dso_local void @_Z4testv() local_unnamed_addr !dbg !7 {
|
||||
entry:
|
||||
call void @llvm.dbg.value(metadata i32 7, metadata !11, metadata !DIExpression()), !dbg !13
|
||||
tail call void @_Z2f1v(), !dbg !14
|
||||
%call = tail call i32 @_Z2f2v(), !dbg !15
|
||||
call void @llvm.dbg.value(metadata i32 %call, metadata !11, metadata !DIExpression()), !dbg !13
|
||||
tail call void @_Z2f1v(), !dbg !16
|
||||
ret void, !dbg !17
|
||||
}
|
||||
|
||||
declare !dbg !18 dso_local void @_Z2f1v() local_unnamed_addr
|
||||
|
||||
declare !dbg !19 dso_local i32 @_Z2f2v() local_unnamed_addr
|
||||
|
||||
declare void @llvm.dbg.value(metadata, metadata, metadata)
|
||||
|
||||
!llvm.dbg.cu = !{!0}
|
||||
!llvm.module.flags = !{!3, !4, !5}
|
||||
!llvm.ident = !{!6}
|
||||
|
||||
!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus_14, file: !1, producer: "clang version 13.0.0 (git@github.com:llvm/llvm-project.git 593cb4655097552ac6d81ce18a2851ae0feb8d3c)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, splitDebugInlining: false, nameTableKind: None)
|
||||
!1 = !DIFile(filename: "loclist_4.cc", directory: "/code")
|
||||
!2 = !{}
|
||||
!3 = !{i32 7, !"Dwarf Version", i32 4}
|
||||
!4 = !{i32 2, !"Debug Info Version", i32 3}
|
||||
!5 = !{i32 1, !"wchar_size", i32 4}
|
||||
!6 = !{!"clang version 13.0.0 (git@github.com:llvm/llvm-project.git 593cb4655097552ac6d81ce18a2851ae0feb8d3c)"}
|
||||
!7 = distinct !DISubprogram(name: "test", linkageName: "_Z4testv", scope: !1, file: !1, line: 3, type: !8, scopeLine: 3, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !10)
|
||||
!8 = !DISubroutineType(types: !9)
|
||||
!9 = !{null}
|
||||
!10 = !{!11}
|
||||
!11 = !DILocalVariable(name: "i", scope: !7, file: !1, line: 6, type: !12)
|
||||
!12 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
|
||||
!13 = !DILocation(line: 0, scope: !7)
|
||||
!14 = !DILocation(line: 7, column: 3, scope: !7)
|
||||
!15 = !DILocation(line: 8, column: 7, scope: !7)
|
||||
!16 = !DILocation(line: 9, column: 3, scope: !7)
|
||||
!17 = !DILocation(line: 10, column: 1, scope: !7)
|
||||
!18 = !DISubprogram(name: "f1", linkageName: "_Z2f1v", scope: !1, file: !1, line: 1, type: !8, flags: DIFlagPrototyped, spFlags: DISPFlagOptimized, retainedNodes: !2)
|
||||
!19 = !DISubprogram(name: "f2", linkageName: "_Z2f2v", scope: !1, file: !1, line: 2, type: !20, flags: DIFlagPrototyped, spFlags: DISPFlagOptimized, retainedNodes: !2)
|
||||
!20 = !DISubroutineType(types: !21)
|
||||
!21 = !{!12}
|
||||
98
test/DebugInfo/X86/basic-block-sections-debug-loclist-5.ll
Normal file
98
test/DebugInfo/X86/basic-block-sections-debug-loclist-5.ll
Normal file
@ -0,0 +1,98 @@
|
||||
; RUN: llc %s -mtriple=x86_64-unknown-linux-gnu --dwarf-version=4 --basic-block-sections=none -filetype=obj -o - | llvm-dwarfdump - | FileCheck %s
|
||||
; RUN: llc %s -mtriple=x86_64-unknown-linux-gnu --dwarf-version=4 --basic-block-sections=all -filetype=obj -o - | llvm-dwarfdump - | FileCheck %s --check-prefix=CHECK --check-prefix=SECTIONS
|
||||
; RUN: llc %s -mtriple=x86_64-unknown-linux-gnu --dwarf-version=5 --basic-block-sections=none -filetype=obj -o - | llvm-dwarfdump - | FileCheck %s
|
||||
; RUN: llc %s -mtriple=x86_64-unknown-linux-gnu --dwarf-version=5 --basic-block-sections=all -filetype=obj -o - | llvm-dwarfdump - | FileCheck %s --check-prefix=CHECK --check-prefix=SECTIONS
|
||||
|
||||
; CHECK: DW_TAG_variable
|
||||
; CHECK-NEXT: DW_AT_location
|
||||
; CHECK-NEXT: [0x{{[0-9a-f]+}}, 0x{{[0-9a-f]+}}): DW_OP_consts +7, DW_OP_stack_value
|
||||
; SECTIONS-NEXT: [0x{{[0-9a-f]+}}, 0x{{[0-9a-f]+}}): DW_OP_consts +7, DW_OP_stack_value
|
||||
; SECTIONS-NEXT: [0x{{[0-9a-f]+}}, 0x{{[0-9a-f]+}}): DW_OP_consts +7, DW_OP_stack_value
|
||||
; CHECK-NEXT: DW_AT_name ("i")
|
||||
|
||||
; In the test below, i's constant value of 7 is only valid partially as
|
||||
; it is redefined at the end. This forces the use of a loclist with basic
|
||||
; block sections. Without basic block sections, a single entry location
|
||||
; list would be used to mark the entire scope in which value of i is 7.
|
||||
|
||||
; Source to generate the IR below:
|
||||
|
||||
; void f1();
|
||||
; int f2();
|
||||
; extern bool b;
|
||||
; extern int x;
|
||||
; void test() {
|
||||
; int i = 7;
|
||||
; f1();
|
||||
; if (b)
|
||||
; f1();
|
||||
; i = f2();
|
||||
; f1();
|
||||
; }
|
||||
;
|
||||
; $ clang++ -S -emit-llvm -g -O2 loclist_4.cc
|
||||
|
||||
|
||||
@b = external dso_local local_unnamed_addr global i8, align 1
|
||||
|
||||
define dso_local void @_Z4testv() local_unnamed_addr !dbg !7 {
|
||||
entry:
|
||||
call void @llvm.dbg.value(metadata i32 7, metadata !11, metadata !DIExpression()), !dbg !13
|
||||
tail call void @_Z2f1v(), !dbg !14
|
||||
%0 = load i8, i8* @b, align 1, !dbg !15, !tbaa !17, !range !21
|
||||
%tobool.not = icmp eq i8 %0, 0, !dbg !15
|
||||
br i1 %tobool.not, label %if.end, label %if.then, !dbg !22
|
||||
|
||||
if.then: ; preds = %entry
|
||||
tail call void @_Z2f1v(), !dbg !23
|
||||
br label %if.end, !dbg !23
|
||||
|
||||
if.end: ; preds = %if.then, %entry
|
||||
%call = tail call i32 @_Z2f2v(), !dbg !24
|
||||
call void @llvm.dbg.value(metadata i32 %call, metadata !11, metadata !DIExpression()), !dbg !13
|
||||
tail call void @_Z2f1v(), !dbg !25
|
||||
ret void, !dbg !26
|
||||
}
|
||||
|
||||
declare !dbg !27 dso_local void @_Z2f1v() local_unnamed_addr
|
||||
|
||||
declare !dbg !28 dso_local i32 @_Z2f2v() local_unnamed_addr
|
||||
|
||||
; Function Attrs: nofree nosync nounwind readnone speculatable willreturn
|
||||
declare void @llvm.dbg.value(metadata, metadata, metadata)
|
||||
|
||||
!llvm.dbg.cu = !{!0}
|
||||
!llvm.module.flags = !{!3, !4, !5}
|
||||
!llvm.ident = !{!6}
|
||||
|
||||
!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus_14, file: !1, producer: "clang version 13.0.0 (git@github.com:llvm/llvm-project.git 593cb4655097552ac6d81ce18a2851ae0feb8d3c)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, splitDebugInlining: false, nameTableKind: None)
|
||||
!1 = !DIFile(filename: "loclist_5.cc", directory: "/code")
|
||||
!2 = !{}
|
||||
!3 = !{i32 7, !"Dwarf Version", i32 4}
|
||||
!4 = !{i32 2, !"Debug Info Version", i32 3}
|
||||
!5 = !{i32 1, !"wchar_size", i32 4}
|
||||
!6 = !{!"clang version 13.0.0 (git@github.com:llvm/llvm-project.git 593cb4655097552ac6d81ce18a2851ae0feb8d3c)"}
|
||||
!7 = distinct !DISubprogram(name: "test", linkageName: "_Z4testv", scope: !1, file: !1, line: 5, type: !8, scopeLine: 5, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !10)
|
||||
!8 = !DISubroutineType(types: !9)
|
||||
!9 = !{null}
|
||||
!10 = !{!11}
|
||||
!11 = !DILocalVariable(name: "i", scope: !7, file: !1, line: 9, type: !12)
|
||||
!12 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
|
||||
!13 = !DILocation(line: 0, scope: !7)
|
||||
!14 = !DILocation(line: 10, column: 3, scope: !7)
|
||||
!15 = !DILocation(line: 11, column: 7, scope: !16)
|
||||
!16 = distinct !DILexicalBlock(scope: !7, file: !1, line: 11, column: 7)
|
||||
!17 = !{!18, !18, i64 0}
|
||||
!18 = !{!"bool", !19, i64 0}
|
||||
!19 = !{!"omnipotent char", !20, i64 0}
|
||||
!20 = !{!"Simple C++ TBAA"}
|
||||
!21 = !{i8 0, i8 2}
|
||||
!22 = !DILocation(line: 11, column: 7, scope: !7)
|
||||
!23 = !DILocation(line: 12, column: 5, scope: !16)
|
||||
!24 = !DILocation(line: 13, column: 7, scope: !7)
|
||||
!25 = !DILocation(line: 14, column: 3, scope: !7)
|
||||
!26 = !DILocation(line: 15, column: 1, scope: !7)
|
||||
!27 = !DISubprogram(name: "f1", linkageName: "_Z2f1v", scope: !1, file: !1, line: 1, type: !8, flags: DIFlagPrototyped, spFlags: DISPFlagOptimized, retainedNodes: !2)
|
||||
!28 = !DISubprogram(name: "f2", linkageName: "_Z2f2v", scope: !1, file: !1, line: 2, type: !29, flags: DIFlagPrototyped, spFlags: DISPFlagOptimized, retainedNodes: !2)
|
||||
!29 = !DISubroutineType(types: !30)
|
||||
!30 = !{!12}
|
||||
@ -29,12 +29,10 @@
|
||||
; BB-SECTIONS-ASM: .LBB_END0_{{[0-9]+}}:
|
||||
; BB-SECTIONS-ASM: .size _Z3fooi.__part.1, .LBB_END0_{{[0-9]+}}-_Z3fooi.__part.1
|
||||
; BB-SECTIONS-ASM: _Z3fooi.__part.2:
|
||||
; BB-SECTIONS-ASM: .Ltmp{{[0-9]+}}:
|
||||
; BB-SECTIONS-ASM-NEXT: .LBB_END0_{{[0-9]+}}:
|
||||
; BB-SECTIONS-ASM: .LBB_END0_{{[0-9]+}}:
|
||||
; BB-SECTIONS-ASM: .size _Z3fooi.__part.2, .LBB_END0_{{[0-9]+}}-_Z3fooi.__part.2
|
||||
; BB-SECTIONS-ASM: _Z3fooi.__part.3:
|
||||
; BB-SECTIONS-ASM: .Ltmp{{[0-9]+}}:
|
||||
; BB-SECTIONS-ASM-NEXT: .LBB_END0_{{[0-9]+}}:
|
||||
; BB-SECTIONS-ASM: .LBB_END0_{{[0-9]+}}:
|
||||
; BB-SECTIONS-ASM: .size _Z3fooi.__part.3, .LBB_END0_{{[0-9]+}}-_Z3fooi.__part.3
|
||||
; BB-SECTIONS-ASM: .Lfunc_end0:
|
||||
; BB-SECTIONS-ASM: .Ldebug_ranges0:
|
||||
|
||||
Loading…
Reference in New Issue
Block a user