static const DIExpression *
convertToVariadicExpression(const DIExpression *Expr);
+ /// If \p Expr is a valid single-location expression, i.e. it refers to only a
+ /// single debug operand at the start of the expression, then return that
+ /// expression in a non-variadic form by removing DW_OP_LLVM_arg from the
+ /// expression if it is present; otherwise returns std::nullopt.
+ static std::optional<const DIExpression *>
+ convertToNonVariadicExpression(const DIExpression *Expr);
+
/// Inserts the elements of \p Expr into \p Ops modified to a canonical form,
/// which uses DW_OP_LLVM_arg (i.e. is a variadic expression) and folds the
/// implied derefence from the \p IsIndirect flag into the expression. This
OS << " <- ";
const DIExpression *Expr = MI->getDebugExpression();
- if (Expr->getNumElements() && Expr->isSingleLocationExpression() &&
- Expr->expr_op_begin()->getOp() == dwarf::DW_OP_LLVM_arg) {
- SmallVector<uint64_t> Ops(
- make_range(Expr->elements_begin() + 2, Expr->elements_end()));
- Expr = DIExpression::get(Expr->getContext(), Ops);
- }
+ // First convert this to a non-variadic expression if possible, to simplify
+ // the output.
+ if (auto NonVariadicExpr = DIExpression::convertToNonVariadicExpression(Expr))
+ Expr = *NonVariadicExpr;
+ // Then, output the possibly-simplified expression.
if (Expr->getNumElements()) {
OS << '[';
ListSeparator LS;
if (!ShouldEmitDebugEntryValues)
return false;
+ const DIExpression *DIExpr = Prop.DIExpr;
+
// We don't currently emit entry values for DBG_VALUE_LISTs.
- if (Prop.IsVariadic)
- return false;
+ if (Prop.IsVariadic) {
+ // If this debug value can be converted to be non-variadic, then do so;
+ // otherwise give up.
+ auto NonVariadicExpression =
+ DIExpression::convertToNonVariadicExpression(DIExpr);
+ if (!NonVariadicExpression)
+ return false;
+ DIExpr = *NonVariadicExpression;
+ }
// Is the variable appropriate for entry values (i.e., is a parameter).
- if (!isEntryValueVariable(Var, Prop.DIExpr))
+ if (!isEntryValueVariable(Var, DIExpr))
return false;
// Is the value assigned to this variable still the entry value?
// Emit a variable location using an entry value expression.
DIExpression *NewExpr =
- DIExpression::prepend(Prop.DIExpr, DIExpression::EntryValue);
+ DIExpression::prepend(DIExpr, DIExpression::EntryValue);
Register Reg = MTracker->LocIdxToLocID[Num.getLoc()];
MachineOperand MO = MachineOperand::CreateReg(Reg, false);
PendingDbgValues.push_back(
- emitMOLoc(MO, Var, {NewExpr, Prop.Indirect, Prop.IsVariadic}));
+ emitMOLoc(MO, Var, {NewExpr, Prop.Indirect, false}));
return true;
}
for (const auto &Var : ActiveMLocIt->second) {
auto ActiveVLocIt = ActiveVLocs.find(Var);
// Re-state the variable location: if there's no replacement then NewLoc
- // is None and a $noreg DBG_VALUE will be created. Otherwise, a DBG_VALUE
- // identifying the alternative location will be emitted.
+ // is std::nullopt and a $noreg DBG_VALUE will be created. Otherwise, a
+ // DBG_VALUE identifying the alternative location will be emitted.
const DbgValueProperties &Properties = ActiveVLocIt->second.Properties;
// Produce the new list of debug ops - an empty list if no new location
return true;
}
-bool InstrRefBasedLDV::transferDebugInstrRef(MachineInstr &MI,
- const ValueTable *MLiveOuts,
- const ValueTable *MLiveIns) {
- if (!MI.isDebugRef())
- return false;
-
- // Only handle this instruction when we are building the variable value
- // transfer function.
- if (!VTracker && !TTracker)
- return false;
-
- unsigned InstNo = MI.getDebugOperand(0).getInstrRefInstrIndex();
- unsigned OpNo = MI.getDebugOperand(0).getInstrRefOpIndex();
-
- const DILocalVariable *Var = MI.getDebugVariable();
- const DIExpression *Expr = MI.getDebugExpression();
- const DILocation *DebugLoc = MI.getDebugLoc();
- const DILocation *InlinedAt = DebugLoc->getInlinedAt();
- assert(Var->isValidLocationForIntrinsic(DebugLoc) &&
- "Expected inlined-at fields to agree");
-
- DebugVariable V(Var, Expr, InlinedAt);
-
- auto *Scope = LS.findLexicalScope(MI.getDebugLoc().get());
- if (Scope == nullptr)
- return true; // Handled by doing nothing. This variable is never in scope.
-
- const MachineFunction &MF = *MI.getParent()->getParent();
-
+std::optional<ValueIDNum> InstrRefBasedLDV::getValueForInstrRef(
+ unsigned InstNo, unsigned OpNo, MachineInstr &MI,
+ const ValueTable *MLiveOuts, const ValueTable *MLiveIns) {
// Various optimizations may have happened to the value during codegen,
// recorded in the value substitution table. Apply any substitutions to
// the instruction / operand number in this DBG_INSTR_REF, and collect
// any subregister extractions performed during optimization.
+ const MachineFunction &MF = *MI.getParent()->getParent();
// Create dummy substitution with Src set, for lookup.
auto SoughtSub =
}
}
- // We, we have a value number or std::nullopt. Tell the variable value tracker
- // about it. The rest of this LiveDebugValues implementation acts exactly the
- // same for DBG_INSTR_REFs as DBG_VALUEs (just, the former can refer to values
- // that aren't immediately available).
- DbgValueProperties Properties(Expr, false, true);
+ return NewID;
+}
+
+bool InstrRefBasedLDV::transferDebugInstrRef(MachineInstr &MI,
+ const ValueTable *MLiveOuts,
+ const ValueTable *MLiveIns) {
+ if (!MI.isDebugRef())
+ return false;
+
+ // Only handle this instruction when we are building the variable value
+ // transfer function.
+ if (!VTracker && !TTracker)
+ return false;
+
+ const DILocalVariable *Var = MI.getDebugVariable();
+ const DIExpression *Expr = MI.getDebugExpression();
+ const DILocation *DebugLoc = MI.getDebugLoc();
+ const DILocation *InlinedAt = DebugLoc->getInlinedAt();
+ assert(Var->isValidLocationForIntrinsic(DebugLoc) &&
+ "Expected inlined-at fields to agree");
+
+ DebugVariable V(Var, Expr, InlinedAt);
+
+ auto *Scope = LS.findLexicalScope(MI.getDebugLoc().get());
+ if (Scope == nullptr)
+ return true; // Handled by doing nothing. This variable is never in scope.
+
SmallVector<DbgOpID> DbgOpIDs;
- if (NewID)
- DbgOpIDs.push_back(DbgOpStore.insert(*NewID));
+ for (const MachineOperand &MO : MI.debug_operands()) {
+ if (!MO.isDbgInstrRef()) {
+ assert(!MO.isReg() && "DBG_INSTR_REF should not contain registers");
+ DbgOpID ConstOpID = DbgOpStore.insert(DbgOp(MO));
+ DbgOpIDs.push_back(ConstOpID);
+ continue;
+ }
+
+ unsigned InstNo = MO.getInstrRefInstrIndex();
+ unsigned OpNo = MO.getInstrRefOpIndex();
+
+ // Default machine value number is <None> -- if no instruction defines
+ // the corresponding value, it must have been optimized out.
+ std::optional<ValueIDNum> NewID =
+ getValueForInstrRef(InstNo, OpNo, MI, MLiveOuts, MLiveIns);
+ // We have a value number or std::nullopt. If the latter, then kill the
+ // entire debug value.
+ if (NewID) {
+ DbgOpIDs.push_back(DbgOpStore.insert(*NewID));
+ } else {
+ DbgOpIDs.clear();
+ break;
+ }
+ }
+
+ // We have a DbgOpID for every value or for none. Tell the variable value
+ // tracker about it. The rest of this LiveDebugValues implementation acts
+ // exactly the same for DBG_INSTR_REFs as DBG_VALUEs (just, the former can
+ // refer to values that aren't immediately available).
+ DbgValueProperties Properties(Expr, false, true);
if (VTracker)
VTracker->defVar(MI, Properties, DbgOpIDs);
if (!TTracker)
return true;
+ // Fetch the concrete DbgOps now, as we will need them later.
+ SmallVector<DbgOp> DbgOps;
+ for (DbgOpID OpID : DbgOpIDs) {
+ DbgOps.push_back(DbgOpStore.find(OpID));
+ }
+
// Pick a location for the machine value number, if such a location exists.
// (This information could be stored in TransferTracker to make it faster).
- TransferTracker::LocationAndQuality FoundLoc;
+ SmallDenseMap<ValueIDNum, TransferTracker::LocationAndQuality> FoundLocs;
+ SmallVector<ValueIDNum> ValuesToFind;
+ // Initialized the preferred-location map with illegal locations, to be
+ // filled in later.
+ for (const DbgOp &Op : DbgOps) {
+ if (!Op.IsConst)
+ if (FoundLocs.insert({Op.ID, TransferTracker::LocationAndQuality()})
+ .second)
+ ValuesToFind.push_back(Op.ID);
+ }
+
for (auto Location : MTracker->locations()) {
LocIdx CurL = Location.Idx;
ValueIDNum ID = MTracker->readMLoc(CurL);
- if (NewID && ID == NewID) {
- // If this is the first location with that value, pick it. Otherwise,
- // consider whether it's a "longer term" location.
- std::optional<TransferTracker::LocationQuality> ReplacementQuality =
- TTracker->getLocQualityIfBetter(CurL, FoundLoc.getQuality());
- if (ReplacementQuality) {
- FoundLoc =
- TransferTracker::LocationAndQuality(CurL, *ReplacementQuality);
- if (FoundLoc.isBest())
+ auto ValueToFindIt = find(ValuesToFind, ID);
+ if (ValueToFindIt == ValuesToFind.end())
+ continue;
+ auto &Previous = FoundLocs.find(ID)->second;
+ // If this is the first location with that value, pick it. Otherwise,
+ // consider whether it's a "longer term" location.
+ std::optional<TransferTracker::LocationQuality> ReplacementQuality =
+ TTracker->getLocQualityIfBetter(CurL, Previous.getQuality());
+ if (ReplacementQuality) {
+ Previous = TransferTracker::LocationAndQuality(CurL, *ReplacementQuality);
+ if (Previous.isBest()) {
+ ValuesToFind.erase(ValueToFindIt);
+ if (ValuesToFind.empty())
break;
}
}
}
SmallVector<ResolvedDbgOp> NewLocs;
- if (!FoundLoc.isIllegal())
- NewLocs.push_back(FoundLoc.getLoc());
+ for (const DbgOp &DbgOp : DbgOps) {
+ if (DbgOp.IsConst) {
+ NewLocs.push_back(DbgOp.MO);
+ continue;
+ }
+ LocIdx FoundLoc = FoundLocs.find(DbgOp.ID)->second.getLoc();
+ if (FoundLoc.isIllegal()) {
+ NewLocs.clear();
+ break;
+ }
+ NewLocs.push_back(FoundLoc);
+ }
// Tell transfer tracker that the variable value has changed.
TTracker->redefVar(MI, Properties, NewLocs);
- // If there was a value with no location; but the value is defined in a
- // later instruction in this block, this is a block-local use-before-def.
- if (FoundLoc.isIllegal() && NewID && NewID->getBlock() == CurBB &&
- NewID->getInst() > CurInst) {
- SmallVector<DbgOp> UseBeforeDefLocs;
- UseBeforeDefLocs.push_back(*NewID);
- TTracker->addUseBeforeDef(V, {MI.getDebugExpression(), false, true},
- UseBeforeDefLocs, NewID->getInst());
+ // If there were values with no location, but all such values are defined in
+ // later instructions in this block, this is a block-local use-before-def.
+ if (!DbgOps.empty() && NewLocs.empty()) {
+ bool IsValidUseBeforeDef = true;
+ uint64_t LastUseBeforeDef = 0;
+ for (auto ValueLoc : FoundLocs) {
+ ValueIDNum NewID = ValueLoc.first;
+ LocIdx FoundLoc = ValueLoc.second.getLoc();
+ if (!FoundLoc.isIllegal())
+ continue;
+ // If we have an value with no location that is not defined in this block,
+ // then it has no location in this block, leaving this value undefined.
+ if (NewID.getBlock() != CurBB || NewID.getInst() <= CurInst) {
+ IsValidUseBeforeDef = false;
+ break;
+ }
+ LastUseBeforeDef = std::max(LastUseBeforeDef, NewID.getInst());
+ }
+ if (IsValidUseBeforeDef) {
+ TTracker->addUseBeforeDef(V, {MI.getDebugExpression(), false, true},
+ DbgOps, LastUseBeforeDef);
+ }
}
// Produce a DBG_VALUE representing what this DBG_INSTR_REF meant.
// This function will be called twice per DBG_INSTR_REF, and might end up
// computing lots of SSA information: memoize it.
- auto SeenDbgPHIIt = SeenDbgPHIs.find(&Here);
+ auto SeenDbgPHIIt = SeenDbgPHIs.find(std::make_pair(&Here, InstrNum));
if (SeenDbgPHIIt != SeenDbgPHIs.end())
return SeenDbgPHIIt->second;
std::optional<ValueIDNum> Result =
resolveDbgPHIsImpl(MF, MLiveOuts, MLiveIns, Here, InstrNum);
- SeenDbgPHIs.insert({&Here, Result});
+ SeenDbgPHIs.insert({std::make_pair(&Here, InstrNum), Result});
return Result;
}
/// DBG_INSTR_REFs that call resolveDbgPHIs. These variable references solve
/// a mini SSA problem caused by DBG_PHIs being cloned, this collection caches
/// the result.
- DenseMap<MachineInstr *, std::optional<ValueIDNum>> SeenDbgPHIs;
+ DenseMap<std::pair<MachineInstr *, unsigned>, std::optional<ValueIDNum>>
+ SeenDbgPHIs;
DbgOpIDMap DbgOpStore;
std::optional<SpillLocationNo>
extractSpillBaseRegAndOffset(const MachineInstr &MI);
+ /// For an instruction reference given by \p InstNo and \p OpNo in instruction
+ /// \p MI returns the Value pointed to by that instruction reference if any
+ /// exists, otherwise returns None.
+ std::optional<ValueIDNum> getValueForInstrRef(unsigned InstNo, unsigned OpNo,
+ MachineInstr &MI,
+ const ValueTable *MLiveOuts,
+ const ValueTable *MLiveIns);
+
/// Observe a single instruction while stepping through a block.
void process(MachineInstr &MI, const ValueTable *MLiveOuts,
const ValueTable *MLiveIns);
return DIExpression::get(Expr->getContext(), NewOps);
}
+std::optional<const DIExpression *>
+DIExpression::convertToNonVariadicExpression(const DIExpression *Expr) {
+ // Check for `isValid` covered by `isSingleLocationExpression`.
+ if (!Expr->isSingleLocationExpression())
+ return std::nullopt;
+
+ // An empty expression is already non-variadic.
+ if (!Expr->getNumElements())
+ return Expr;
+
+ auto ElementsBegin = Expr->elements_begin();
+ // If Expr does not have a leading DW_OP_LLVM_arg then we don't need to do
+ // anything.
+ if (*ElementsBegin != dwarf::DW_OP_LLVM_arg)
+ return Expr;
+
+ SmallVector<uint64_t> NonVariadicOps(
+ make_range(ElementsBegin + 2, Expr->elements_end()));
+ return DIExpression::get(Expr->getContext(), NonVariadicOps);
+}
+
void DIExpression::canonicalizeExpressionOps(SmallVectorImpl<uint64_t> &Ops,
const DIExpression *Expr,
bool IsIndirect) {
--- /dev/null
+# RUN: llc %s -o - -experimental-debug-variable-locations=true \
+# RUN: -run-pass=livedebugvalues | \
+# RUN: FileCheck %s --implicit-check-not=DBG_VALUE
+#
+## Check that LiveDebugValues can track and join DBG_INSTR_REFs that use
+## registers, stack slots, and constants in a single instruction.
+#
+# CHECK: ![[VAR_D:[0-9]+]] = !DILocalVariable(name: "d"
+
+# CHECK-LABEL: bb.0.entry
+#
+## Value at end of first block should use the registers given by DBG_PHI, and
+## fold the offset+deref from stack slot [$rsp+12] into the expression.
+# CHECK: DBG_VALUE_LIST ![[VAR_D]]
+# CHECK-SAME: !DIExpression(DW_OP_LLVM_arg, 0, DW_OP_LLVM_arg, 2, DW_OP_mul, DW_OP_LLVM_arg, 1, DW_OP_plus_uconst, 12, DW_OP_deref, DW_OP_plus, DW_OP_LLVM_arg, 3, DW_OP_minus, DW_OP_stack_value)
+# CHECK-SAME: $ebp, $rsp, $ebx, 6
+
+# CHECK-LABEL: bb.1.while.body
+#
+## Prior DBG_VALUE_LIST should be live-in to this bb.1.
+# CHECK: DBG_VALUE_LIST ![[VAR_D]]
+# CHECK-SAME: !DIExpression(DW_OP_LLVM_arg, 0, DW_OP_LLVM_arg, 2, DW_OP_mul, DW_OP_LLVM_arg, 1, DW_OP_plus_uconst, 12, DW_OP_deref, DW_OP_plus, DW_OP_LLVM_arg, 3, DW_OP_minus, DW_OP_stack_value)
+# CHECK-SAME: $ebp, $rsp, $ebx, 6
+#
+## When $ebp is spilled to a stack slot, a new debug value using the stack slot
+## should be inserted.
+# CHECK: MOV32mr $rsp, {{.+}} $ebp
+# CHECK-NEXT: DBG_VALUE_LIST ![[VAR_D]]
+# CHECK-SAME: !DIExpression(DW_OP_LLVM_arg, 0, DW_OP_plus_uconst, 16, DW_OP_deref, DW_OP_LLVM_arg, 2, DW_OP_mul, DW_OP_LLVM_arg, 1, DW_OP_plus_uconst, 12, DW_OP_deref, DW_OP_plus, DW_OP_LLVM_arg, 3, DW_OP_minus, DW_OP_stack_value)
+# CHECK-SAME: $rsp, $rsp, $ebx, 6
+#
+## Similarly produce a new debug value when $ebx is spilled.
+# CHECK: MOV32mr $rsp, {{.+}} $ebx
+# CHECK-NEXT: DBG_VALUE_LIST ![[VAR_D]]
+# CHECK-SAME: !DIExpression(DW_OP_LLVM_arg, 0, DW_OP_plus_uconst, 16, DW_OP_deref, DW_OP_LLVM_arg, 2, DW_OP_plus_uconst, 20, DW_OP_deref, DW_OP_mul, DW_OP_LLVM_arg, 1, DW_OP_plus_uconst, 12, DW_OP_deref, DW_OP_plus, DW_OP_LLVM_arg, 3, DW_OP_minus, DW_OP_stack_value)
+# CHECK-SAME: $rsp, $rsp, $rsp, 6
+#
+## When the value in the stack slot is restored and then that slot is clobbered, the debug value should use the restored register.
+# CHECK: MOV32mi $rsp
+# CHECK-NEXT: DBG_VALUE_LIST ![[VAR_D]]
+# CHECK-SAME: !DIExpression(DW_OP_LLVM_arg, 0, DW_OP_plus_uconst, 16, DW_OP_deref, DW_OP_LLVM_arg, 2, DW_OP_mul, DW_OP_LLVM_arg, 1, DW_OP_plus_uconst, 12, DW_OP_deref, DW_OP_plus, DW_OP_LLVM_arg, 3, DW_OP_minus, DW_OP_stack_value)
+# CHECK-SAME: $rsp, $rsp, $ebx, 6
+#
+## Repeat for the next stack slot that gets restored and then clobbered.
+# CHECK: MOV32mi $rsp
+# CHECK-NEXT: DBG_VALUE_LIST ![[VAR_D]]
+# CHECK-SAME: !DIExpression(DW_OP_LLVM_arg, 0, DW_OP_LLVM_arg, 2, DW_OP_mul, DW_OP_LLVM_arg, 1, DW_OP_plus_uconst, 12, DW_OP_deref, DW_OP_plus, DW_OP_LLVM_arg, 3, DW_OP_minus, DW_OP_stack_value)
+# CHECK-SAME: $ebp, $rsp, $ebx, 6
+#
+## TODO: The debug value range should be terminated when the value in $ebx is clobbered.
+#
+## At the end of the block a new DBG_INSTR_REF begins a new range.
+# CHECK: DBG_VALUE_LIST ![[VAR_D]]
+# CHECK-SAME: !DIExpression(DW_OP_LLVM_arg, 0, DW_OP_LLVM_arg, 2, DW_OP_mul, DW_OP_LLVM_arg, 1, DW_OP_plus_uconst, 12, DW_OP_deref, DW_OP_plus, DW_OP_LLVM_arg, 3, DW_OP_minus, DW_OP_stack_value)
+# CHECK-SAME: $ebp, $rsp, $ebx, 6
+
+# CHECK-LABEL: bb.2.while.end
+#
+## Finally, the two entry debug values should be joined, as they have identical
+## expressions, their respective stack slots and constants are identical, and
+## the remaining operands occupy the same registers out of each block.
+# CHECK: DBG_VALUE_LIST ![[VAR_D]]
+# CHECK-SAME: !DIExpression(DW_OP_LLVM_arg, 0, DW_OP_LLVM_arg, 2, DW_OP_mul, DW_OP_LLVM_arg, 1, DW_OP_plus_uconst, 12, DW_OP_deref, DW_OP_plus, DW_OP_LLVM_arg, 3, DW_OP_minus, DW_OP_stack_value)
+# CHECK-SAME: $ebp, $rsp, $ebx, 6
+
+
+--- |
+
+ ; ModuleID = 'test.ll'
+ source_filename = "test.cpp"
+ 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-unknown-linux-gnu"
+
+ ; Function Attrs: mustprogress uwtable
+ define dso_local noundef i32 @_Z3fooii(i32 noundef %a, i32 noundef %b) local_unnamed_addr !dbg !9 {
+ entry:
+ %call = tail call noundef i32 @_Z3bazv(), !dbg !18
+ call void @llvm.dbg.value(metadata !DIArgList(i32 %a, i32 %call, i32 %b), metadata !17, metadata !DIExpression(DW_OP_LLVM_arg, 0, DW_OP_LLVM_arg, 2, DW_OP_mul, DW_OP_LLVM_arg, 1, DW_OP_plus, DW_OP_constu, 6, DW_OP_minus, DW_OP_stack_value)), !dbg !19
+ %cmp19 = icmp sgt i32 %b, %a, !dbg !20
+ br i1 %cmp19, label %while.body.preheader, label %while.end, !dbg !21
+
+ while.body.preheader: ; preds = %entry
+ br label %while.body, !dbg !21
+
+ while.body: ; preds = %while.body.preheader, %while.body
+ %a.addr.021 = phi i32 [ %mul3, %while.body ], [ %a, %while.body.preheader ]
+ %b.addr.020 = phi i32 [ %add2, %while.body ], [ %b, %while.body.preheader ]
+ %call1 = tail call noundef i32 @_Z3bazv(), !dbg !22
+ tail call void asm sideeffect "", "~{rax},~{rbx},~{rcx},~{rdx},~{rsi},~{rdi},~{rbp},~{r8},~{r9},~{r10},~{r11},~{r12},~{r13},~{r14},~{r15},~{dirflag},~{fpsr},~{flags}"() #3, !dbg !24, !srcloc !25
+ %add2 = add i32 %b.addr.020, 2, !dbg !26
+ %mul3 = shl nsw i32 %a.addr.021, 1, !dbg !27
+ call void @llvm.dbg.value(metadata !DIArgList(i32 %mul3, i32 %call, i32 %add2), metadata !17, metadata !DIExpression(DW_OP_LLVM_arg, 0, DW_OP_LLVM_arg, 2, DW_OP_mul, DW_OP_LLVM_arg, 1, DW_OP_plus, DW_OP_constu, 6, DW_OP_minus, DW_OP_stack_value)), !dbg !19
+ %cmp = icmp sgt i32 %add2, %mul3, !dbg !20
+ br i1 %cmp, label %while.body, label %while.end, !dbg !21, !llvm.loop !28
+
+ while.end: ; preds = %while.body, %entry
+ %b.addr.0.lcssa = phi i32 [ %b, %entry ], [ %add2, %while.body ]
+ %a.addr.0.lcssa = phi i32 [ %a, %entry ], [ %mul3, %while.body ]
+ %add7 = sub i32 %b.addr.0.lcssa, %call, !dbg !31
+ %sub8 = add i32 %add7, %a.addr.0.lcssa, !dbg !32
+ ret i32 %sub8, !dbg !33
+ }
+
+ declare !dbg !34 noundef i32 @_Z3bazv() local_unnamed_addr
+
+ ; Function Attrs: nocallback nofree nosync nounwind readnone speculatable willreturn
+ declare void @llvm.dbg.value(metadata, metadata, metadata)
+
+ !llvm.dbg.cu = !{!0}
+ !llvm.module.flags = !{!2, !3, !4, !5, !6, !7}
+ !llvm.ident = !{!8}
+
+ !0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus_14, file: !1, producer: "clang version 16.0.0", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, splitDebugInlining: false, nameTableKind: None)
+ !1 = !DIFile(filename: "test.cpp", directory: "/")
+ !2 = !{i32 7, !"Dwarf Version", i32 5}
+ !3 = !{i32 2, !"Debug Info Version", i32 3}
+ !4 = !{i32 1, !"wchar_size", i32 4}
+ !5 = !{i32 8, !"PIC Level", i32 2}
+ !6 = !{i32 7, !"PIE Level", i32 2}
+ !7 = !{i32 7, !"uwtable", i32 2}
+ !8 = !{!"clang version 16.0.0"}
+ !9 = distinct !DISubprogram(name: "foo", linkageName: "_Z3fooii", scope: !1, file: !1, line: 3, type: !10, scopeLine: 3, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !13)
+ !10 = !DISubroutineType(types: !11)
+ !11 = !{!12, !12, !12}
+ !12 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
+ !13 = !{!14, !15, !16, !17}
+ !14 = !DILocalVariable(name: "a", arg: 1, scope: !9, file: !1, line: 3, type: !12)
+ !15 = !DILocalVariable(name: "b", arg: 2, scope: !9, file: !1, line: 3, type: !12)
+ !16 = !DILocalVariable(name: "c", scope: !9, file: !1, line: 4, type: !12)
+ !17 = !DILocalVariable(name: "d", scope: !9, file: !1, line: 5, type: !12)
+ !18 = !DILocation(line: 4, column: 11, scope: !9)
+ !19 = !DILocation(line: 0, scope: !9)
+ !20 = !DILocation(line: 6, column: 12, scope: !9)
+ !21 = !DILocation(line: 6, column: 3, scope: !9)
+ !22 = !DILocation(line: 7, column: 5, scope: !23)
+ !23 = distinct !DILexicalBlock(scope: !9, file: !1, line: 6, column: 17)
+ !24 = !DILocation(line: 9, column: 5, scope: !23)
+ !25 = !{i64 129}
+ !26 = !DILocation(line: 8, column: 7, scope: !23)
+ !27 = !DILocation(line: 10, column: 7, scope: !23)
+ !28 = distinct !{!28, !21, !29, !30}
+ !29 = !DILocation(line: 12, column: 3, scope: !9)
+ !30 = !{!"llvm.loop.mustprogress"}
+ !31 = !DILocation(line: 13, column: 12, scope: !9)
+ !32 = !DILocation(line: 13, column: 16, scope: !9)
+ !33 = !DILocation(line: 13, column: 3, scope: !9)
+ !34 = !DISubprogram(name: "baz", linkageName: "_Z3bazv", scope: !1, file: !1, line: 1, type: !35, flags: DIFlagPrototyped, spFlags: DISPFlagOptimized, retainedNodes: !37)
+ !35 = !DISubroutineType(types: !36)
+ !36 = !{!12}
+ !37 = !{}
+
+...
+---
+name: _Z3fooii
+alignment: 16
+tracksRegLiveness: true
+tracksDebugUserValues: true
+registers: []
+liveins:
+ - { reg: '$edi', virtual-reg: '' }
+ - { reg: '$esi', virtual-reg: '' }
+frameInfo:
+ stackSize: 72
+ offsetAdjustment: -72
+ maxAlignment: 4
+ adjustsStack: true
+ hasCalls: true
+ stackProtector: ''
+ functionContext: ''
+ cvBytesOfCalleeSavedRegisters: 48
+ savePoint: ''
+ restorePoint: ''
+fixedStack:
+ - { id: 0, type: spill-slot, offset: -56, size: 8, alignment: 8, stack-id: default,
+ callee-saved-register: '$rbx', callee-saved-restored: true, debug-info-variable: '',
+ debug-info-expression: '', debug-info-location: '' }
+ - { id: 1, type: spill-slot, offset: -48, size: 8, alignment: 16, stack-id: default,
+ callee-saved-register: '$r12', callee-saved-restored: true, debug-info-variable: '',
+ debug-info-expression: '', debug-info-location: '' }
+ - { id: 2, type: spill-slot, offset: -40, size: 8, alignment: 8, stack-id: default,
+ callee-saved-register: '$r13', callee-saved-restored: true, debug-info-variable: '',
+ debug-info-expression: '', debug-info-location: '' }
+ - { id: 3, type: spill-slot, offset: -32, size: 8, alignment: 16, stack-id: default,
+ callee-saved-register: '$r14', callee-saved-restored: true, debug-info-variable: '',
+ debug-info-expression: '', debug-info-location: '' }
+ - { id: 4, type: spill-slot, offset: -24, size: 8, alignment: 8, stack-id: default,
+ callee-saved-register: '$r15', callee-saved-restored: true, debug-info-variable: '',
+ debug-info-expression: '', debug-info-location: '' }
+ - { id: 5, type: spill-slot, offset: -16, size: 8, alignment: 16, stack-id: default,
+ callee-saved-register: '$rbp', callee-saved-restored: true, debug-info-variable: '',
+ debug-info-expression: '', debug-info-location: '' }
+stack:
+ - { id: 0, name: '', type: spill-slot, offset: -60, size: 4, alignment: 4,
+ stack-id: default, callee-saved-register: '', callee-saved-restored: true,
+ debug-info-variable: '', debug-info-expression: '', debug-info-location: '' }
+ - { id: 1, name: '', type: spill-slot, offset: -64, size: 4, alignment: 4,
+ stack-id: default, callee-saved-register: '', callee-saved-restored: true,
+ debug-info-variable: '', debug-info-expression: '', debug-info-location: '' }
+ - { id: 2, name: '', type: spill-slot, offset: -68, size: 4, alignment: 4,
+ stack-id: default, callee-saved-register: '', callee-saved-restored: true,
+ debug-info-variable: '', debug-info-expression: '', debug-info-location: '' }
+callSites: []
+debugValueSubstitutions: []
+constants: []
+machineFunctionInfo: {}
+body: |
+ bb.0.entry:
+ successors: %bb.1(0x78e38e39), %bb.3(0x071c71c7)
+ liveins: $edi, $esi, $rbp, $r15, $r14, $r13, $r12, $rbx
+
+ frame-setup PUSH64r killed $rbp, implicit-def $rsp, implicit $rsp
+ frame-setup CFI_INSTRUCTION def_cfa_offset 16
+ frame-setup PUSH64r killed $r15, implicit-def $rsp, implicit $rsp
+ frame-setup CFI_INSTRUCTION def_cfa_offset 24
+ frame-setup PUSH64r killed $r14, implicit-def $rsp, implicit $rsp
+ frame-setup CFI_INSTRUCTION def_cfa_offset 32
+ frame-setup PUSH64r killed $r13, implicit-def $rsp, implicit $rsp
+ frame-setup CFI_INSTRUCTION def_cfa_offset 40
+ frame-setup PUSH64r killed $r12, implicit-def $rsp, implicit $rsp
+ frame-setup CFI_INSTRUCTION def_cfa_offset 48
+ frame-setup PUSH64r killed $rbx, implicit-def $rsp, implicit $rsp
+ frame-setup CFI_INSTRUCTION def_cfa_offset 56
+ $rsp = frame-setup SUB64ri8 $rsp, 24, implicit-def dead $eflags
+ frame-setup CFI_INSTRUCTION def_cfa_offset 80
+ CFI_INSTRUCTION offset $rbx, -56
+ CFI_INSTRUCTION offset $r12, -48
+ CFI_INSTRUCTION offset $r13, -40
+ CFI_INSTRUCTION offset $r14, -32
+ CFI_INSTRUCTION offset $r15, -24
+ CFI_INSTRUCTION offset $rbp, -16
+ DBG_PHI $esi, 5
+ DBG_PHI $edi, 3
+ $ebx = MOV32rr $esi
+ $ebp = MOV32rr $edi
+ CALL64pcrel32 target-flags(x86-plt) @_Z3bazv, csr_64, implicit $rsp, implicit $ssp, implicit-def $rsp, implicit-def $ssp, implicit-def $eax, debug-instr-number 4, debug-location !18
+ MOV32mr $rsp, 1, $noreg, 12, $noreg, $eax :: (store (s32) into %stack.2)
+ DBG_INSTR_REF !17, !DIExpression(DW_OP_LLVM_arg, 0, DW_OP_LLVM_arg, 2, DW_OP_mul, DW_OP_LLVM_arg, 1, DW_OP_plus, DW_OP_LLVM_arg, 3, DW_OP_minus, DW_OP_stack_value), dbg-instr-ref(3, 0), dbg-instr-ref(4, 6), dbg-instr-ref(5, 0), 6, debug-location !19
+ CMP32rr renamable $ebx, renamable $ebp, implicit-def $eflags, debug-location !20
+ JCC_1 %bb.3, 14, implicit $eflags, debug-location !21
+
+ bb.1.while.body (align 16):
+ successors: %bb.1(0x78e38e39), %bb.3(0x071c71c7)
+ liveins: $ebp, $ebx
+
+ MOV32mr $rsp, 1, $noreg, 16, $noreg, killed renamable $ebp :: (store (s32) into %stack.1)
+ MOV32mr $rsp, 1, $noreg, 20, $noreg, killed renamable $ebx :: (store (s32) into %stack.0)
+ CALL64pcrel32 target-flags(x86-plt) @_Z3bazv, csr_64, implicit $rsp, implicit $ssp, implicit-def $rsp, implicit-def $ssp, implicit-def dead $eax, debug-location !22
+ INLINEASM &"", 1 /* sideeffect attdialect */, 12 /* clobber */, implicit-def dead early-clobber $rax, 12 /* clobber */, implicit-def dead early-clobber $rbx, 12 /* clobber */, implicit-def dead early-clobber $rcx, 12 /* clobber */, implicit-def dead early-clobber $rdx, 12 /* clobber */, implicit-def dead early-clobber $rsi, 12 /* clobber */, implicit-def dead early-clobber $rdi, 12 /* clobber */, implicit-def dead early-clobber $rbp, 12 /* clobber */, implicit-def dead early-clobber $r8, 12 /* clobber */, implicit-def dead early-clobber $r9, 12 /* clobber */, implicit-def dead early-clobber $r10, 12 /* clobber */, implicit-def dead early-clobber $r11, 12 /* clobber */, implicit-def dead early-clobber $r12, 12 /* clobber */, implicit-def dead early-clobber $r13, 12 /* clobber */, implicit-def dead early-clobber $r14, 12 /* clobber */, implicit-def dead early-clobber $r15, 12 /* clobber */, implicit-def dead early-clobber $df, 12 /* clobber */, implicit-def early-clobber $fpsw, 12 /* clobber */, implicit-def dead early-clobber $eflags, !25, debug-location !24
+ renamable $ebp = MOV32rm $rsp, 1, $noreg, 16, $noreg :: (load (s32) from %stack.1)
+ renamable $ebx = MOV32rm $rsp, 1, $noreg, 20, $noreg :: (load (s32) from %stack.0)
+ MOV32mi $rsp, 1, $noreg, 20, $noreg, 0 :: (store (s32) into %stack.0)
+ MOV32mi $rsp, 1, $noreg, 16, $noreg, 0 :: (store (s32) into %stack.1)
+ renamable $ebx = ADD32ri8 killed renamable $ebx, 2, implicit-def dead $eflags, debug-instr-number 2, debug-location !26
+ renamable $ebp = nsw ADD32rr killed renamable $ebp, renamable $ebp, implicit-def dead $eflags, debug-instr-number 1, debug-location !27
+ DBG_INSTR_REF !17, !DIExpression(DW_OP_LLVM_arg, 0, DW_OP_LLVM_arg, 2, DW_OP_mul, DW_OP_LLVM_arg, 1, DW_OP_plus, DW_OP_LLVM_arg, 3, DW_OP_minus, DW_OP_stack_value), dbg-instr-ref(1, 0), dbg-instr-ref(4, 6), dbg-instr-ref(2, 0), 6, debug-location !19
+ CMP32rr renamable $ebx, renamable $ebp, implicit-def $eflags, debug-location !20
+ JCC_1 %bb.1, 15, implicit $eflags, debug-location !21
+
+ bb.3.while.end:
+ liveins: $ebp, $ebx
+
+ renamable $ebx = SUB32rm killed renamable $ebx, $rsp, 1, $noreg, 12, $noreg, implicit-def dead $eflags, debug-location !31 :: (load (s32) from %stack.2)
+ renamable $ebx = ADD32rr killed renamable $ebx, killed renamable $ebp, implicit-def dead $eflags, debug-location !32
+ $eax = MOV32rr killed $ebx, debug-location !33
+ $rsp = frame-destroy ADD64ri8 $rsp, 24, implicit-def dead $eflags, debug-location !33
+ frame-destroy CFI_INSTRUCTION def_cfa_offset 56, debug-location !33
+ $rbx = frame-destroy POP64r implicit-def $rsp, implicit $rsp, debug-location !33
+ frame-destroy CFI_INSTRUCTION def_cfa_offset 48, debug-location !33
+ $r12 = frame-destroy POP64r implicit-def $rsp, implicit $rsp, debug-location !33
+ frame-destroy CFI_INSTRUCTION def_cfa_offset 40, debug-location !33
+ $r13 = frame-destroy POP64r implicit-def $rsp, implicit $rsp, debug-location !33
+ frame-destroy CFI_INSTRUCTION def_cfa_offset 32, debug-location !33
+ $r14 = frame-destroy POP64r implicit-def $rsp, implicit $rsp, debug-location !33
+ frame-destroy CFI_INSTRUCTION def_cfa_offset 24, debug-location !33
+ $r15 = frame-destroy POP64r implicit-def $rsp, implicit $rsp, debug-location !33
+ frame-destroy CFI_INSTRUCTION def_cfa_offset 16, debug-location !33
+ $rbp = frame-destroy POP64r implicit-def $rsp, implicit $rsp, debug-location !33
+ frame-destroy CFI_INSTRUCTION def_cfa_offset 8, debug-location !33
+ RET64 $eax, debug-location !33
+
+...
# livedebugvars-crossbb-interval.mir.
#
# CHECK-LABEL: bb.0:
-# CHECK: DBG_INSTR_REF {{.+}}, dbg-instr-ref(1, 0)\r
+# CHECK: DBG_INSTR_REF {{.+}}, dbg-instr-ref(1, 0)
+# CHECK: DBG_INSTR_REF {{.+}}, dbg-instr-ref(1, 0), dbg-instr-ref(2, 0)
# CHECK-NEXT: JMP_1
# CHECK-LABEL: bb.1:
-# CHECK: DBG_INSTR_REF {{.+}}, dbg-instr-ref(2, 0)\r
+# CHECK: DBG_INSTR_REF {{.+}}, dbg-instr-ref(2, 0)
+# CHECK: DBG_INSTR_REF {{.+}}, dbg-instr-ref(2, 0), dbg-instr-ref(3, 0)
# CHECK-NEXT: JMP_1
# CHECK-LABEL: bb.2:
-# CHECK: DBG_INSTR_REF {{.+}}, dbg-instr-ref(3, 0)\r
+# CHECK: DBG_INSTR_REF {{.+}}, dbg-instr-ref(3, 0)
+# CHECK: DBG_INSTR_REF {{.+}}, dbg-instr-ref(3, 0), dbg-instr-ref(4, 0)
# CHECK-NEXT: CALL64pcrel32
# CHECK-LABEL: bb.3:
-# CHECK: DBG_INSTR_REF {{.+}}, dbg-instr-ref(4, 0)\r
+# CHECK: DBG_INSTR_REF {{.+}}, dbg-instr-ref(4, 0)
+# CHECK: DBG_INSTR_REF {{.+}}, dbg-instr-ref(4, 0), dbg-instr-ref(5, 0)
# CHECK-NEXT: JMP_1
#
#
# the DBG_INSTR_REF lands on.
#
# FASTREG-LABEL: bb.0:
-# FASTREG-DAG: DBG_INSTR_REF {{.+}}, dbg-instr-ref(1, 0)\r
+# FASTREG-DAG: DBG_INSTR_REF {{.+}}, dbg-instr-ref(1, 0)
+# FASTREG-DAG: DBG_INSTR_REF {{.+}}, dbg-instr-ref(1, 0), dbg-instr-ref(2, 0)
# FASTREG-DAG: MOV64mr
# FASTREG-DAG: MOV32mr
# FASTREG-NEXT: JMP_1
# FASTREG-LABEL: bb.1:
-# FASTREG: DBG_INSTR_REF {{.+}}, dbg-instr-ref(2, 0)\r
+# FASTREG: DBG_INSTR_REF {{.+}}, dbg-instr-ref(2, 0)
+# FASTREG-DAG: DBG_INSTR_REF {{.+}}, dbg-instr-ref(2, 0), dbg-instr-ref(3, 0)
# FASTREG-NEXT: JMP_1
# FASTREG-LABEL: bb.2:
-# FASTREG: DBG_INSTR_REF {{.+}}, dbg-instr-ref(3, 0)\r
+# FASTREG: DBG_INSTR_REF {{.+}}, dbg-instr-ref(3, 0)
+# FASTREG-DAG: DBG_INSTR_REF {{.+}}, dbg-instr-ref(3, 0), dbg-instr-ref(4, 0)
# FASTREG-NEXT: CALL64pcrel32
# FASTREG-LABEL: bb.3:
# FASTREG-DAG: MOV32rm
-# FASTREG-DAG: DBG_INSTR_REF {{.+}}, dbg-instr-ref(4, 0)\r
+# FASTREG-DAG: DBG_INSTR_REF {{.+}}, dbg-instr-ref(4, 0)
+# FASTREG-DAG: DBG_INSTR_REF {{.+}}, dbg-instr-ref(4, 0), dbg-instr-ref(5, 0)
# FASTREG-DAG: MOV32mr
# FASTREG-NEXT: JMP_1
# FASTREG-LABEL: bb.4:
-# FASTREG: DBG_INSTR_REF {{.+}}, dbg-instr-ref(5, 0)\r
+# FASTREG: DBG_INSTR_REF {{.+}}, dbg-instr-ref(5, 0)
+# FASTREG-DAG: DBG_INSTR_REF {{.+}}, dbg-instr-ref(5, 0), dbg-instr-ref(1, 0)
# FASTREG-NEXT: RET64
--- |
!17 = !DILocation(line: 6, column: 14, scope: !15)
!18 = !DILocation(line: 8, column: 2, scope: !15)
!19 = !DILocation(line: 7, column: 2, scope: !15)
+ !29 = !DILocalVariable(name: "c", scope: !4, file: !1, line: 5, type: !10)
...
---
%2:gr64 = COPY $rdi
%3:gr64 = COPY killed %2
%5:gr32 = COPY killed %4
- DBG_INSTR_REF !9, !DIExpression(DW_OP_LLVM_arg, 0), dbg-instr-ref(1, 0), debug-location !16\r
+ DBG_INSTR_REF !9, !DIExpression(DW_OP_LLVM_arg, 0), dbg-instr-ref(1, 0), debug-location !16
+ DBG_INSTR_REF !29, !DIExpression(DW_OP_LLVM_arg, 0, DW_OP_LLVM_arg, 1, DW_OP_plus), dbg-instr-ref(1, 0), dbg-instr-ref(2, 0), debug-location !16
JMP_1 %bb.3
bb.1:
- DBG_INSTR_REF !9, !DIExpression(DW_OP_LLVM_arg, 0), dbg-instr-ref(2, 0), debug-location !16\r
+ DBG_INSTR_REF !9, !DIExpression(DW_OP_LLVM_arg, 0), dbg-instr-ref(2, 0), debug-location !16
+ DBG_INSTR_REF !29, !DIExpression(DW_OP_LLVM_arg, 0, DW_OP_LLVM_arg, 1, DW_OP_plus), dbg-instr-ref(2, 0), dbg-instr-ref(3, 0), debug-location !16
JMP_1 %bb.4
bb.2:
ADJCALLSTACKDOWN64 0, 0, 0, implicit-def $rsp, implicit-def $eflags, implicit-def $ssp, implicit $rsp, implicit $ssp, debug-location !19
$edi = COPY %6, debug-location !19
$al = MOV8ri 0, debug-location !19
- DBG_INSTR_REF !9, !DIExpression(DW_OP_LLVM_arg, 0), dbg-instr-ref(3, 0), debug-location !16\r
+ DBG_INSTR_REF !9, !DIExpression(DW_OP_LLVM_arg, 0), dbg-instr-ref(3, 0), debug-location !16
+ DBG_INSTR_REF !29, !DIExpression(DW_OP_LLVM_arg, 0, DW_OP_LLVM_arg, 1, DW_OP_plus), dbg-instr-ref(3, 0), dbg-instr-ref(4, 0), debug-location !16
CALL64pcrel32 @foo, csr_64, implicit $rsp, implicit $ssp, implicit $al, implicit $edi, implicit-def $eax, debug-location !19
ADJCALLSTACKUP64 0, 0, implicit-def $rsp, implicit-def $eflags, implicit-def $ssp, implicit $rsp, implicit $ssp, debug-location !19
%7:gr32 = COPY $eax, debug-location !19
bb.3:
%6:gr32 = MOV32rm %3, 1, $noreg, 0, $noreg, debug-location !17
- DBG_INSTR_REF !9, !DIExpression(DW_OP_LLVM_arg, 0), dbg-instr-ref(4, 0), debug-location !16\r
+ DBG_INSTR_REF !9, !DIExpression(DW_OP_LLVM_arg, 0), dbg-instr-ref(4, 0), debug-location !16
+ DBG_INSTR_REF !29, !DIExpression(DW_OP_LLVM_arg, 0, DW_OP_LLVM_arg, 1, DW_OP_plus), dbg-instr-ref(4, 0), dbg-instr-ref(5, 0), debug-location !16
JMP_1 %bb.2
bb.4:
$eax = COPY %5, debug-location !18
- DBG_INSTR_REF !9, !DIExpression(DW_OP_LLVM_arg, 0), dbg-instr-ref(5, 0), debug-location !16\r
+ DBG_INSTR_REF !9, !DIExpression(DW_OP_LLVM_arg, 0), dbg-instr-ref(5, 0), debug-location !16
+ DBG_INSTR_REF !29, !DIExpression(DW_OP_LLVM_arg, 0, DW_OP_LLVM_arg, 1, DW_OP_plus), dbg-instr-ref(5, 0), dbg-instr-ref(1, 0), debug-location !16
RET64 implicit $eax, debug-location !18
...
#undef GET_EXPR
}
+TEST_F(DIExpressionTest, convertToNonVariadicExpression) {
+#define EXPECT_CONVERT_IS_NOOP(TestExpr) \
+ do { \
+ std::optional<const DIExpression *> NonVariadic = \
+ DIExpression::convertToNonVariadicExpression(TestExpr); \
+ EXPECT_TRUE(NonVariadic.has_value()); \
+ EXPECT_EQ(*NonVariadic, TestExpr); \
+ } while (false)
+#define EXPECT_NON_VARIADIC_OPS_EQUAL(TestExpr, Expected) \
+ do { \
+ std::optional<const DIExpression *> NonVariadic = \
+ DIExpression::convertToNonVariadicExpression(TestExpr); \
+ EXPECT_TRUE(NonVariadic.has_value()); \
+ EXPECT_EQ(*NonVariadic, Expected); \
+ } while (false)
+#define EXPECT_INVALID_CONVERSION(TestExpr) \
+ do { \
+ std::optional<const DIExpression *> NonVariadic = \
+ DIExpression::convertToNonVariadicExpression(TestExpr); \
+ EXPECT_FALSE(NonVariadic.has_value()); \
+ } while (false)
+#define GET_EXPR(...) DIExpression::get(Context, {__VA_ARGS__})
+
+ // Expressions which are already non-variadic should be unaffected.
+ EXPECT_CONVERT_IS_NOOP(GET_EXPR());
+ EXPECT_CONVERT_IS_NOOP(GET_EXPR(dwarf::DW_OP_plus_uconst, 4));
+ EXPECT_CONVERT_IS_NOOP(
+ GET_EXPR(dwarf::DW_OP_plus_uconst, 4, dwarf::DW_OP_stack_value));
+ EXPECT_CONVERT_IS_NOOP(GET_EXPR(dwarf::DW_OP_plus_uconst, 6,
+ dwarf::DW_OP_stack_value,
+ dwarf::DW_OP_LLVM_fragment, 32, 32));
+ EXPECT_CONVERT_IS_NOOP(GET_EXPR(dwarf::DW_OP_plus_uconst, 14,
+ dwarf::DW_OP_LLVM_fragment, 32, 32));
+
+ // Variadic expressions with a single leading `LLVM_arg 0` and no other
+ // LLVM_args should have the leading arg removed.
+ EXPECT_NON_VARIADIC_OPS_EQUAL(GET_EXPR(dwarf::DW_OP_LLVM_arg, 0), GET_EXPR());
+ EXPECT_NON_VARIADIC_OPS_EQUAL(
+ GET_EXPR(dwarf::DW_OP_LLVM_arg, 0, dwarf::DW_OP_stack_value),
+ GET_EXPR(dwarf::DW_OP_stack_value));
+ EXPECT_NON_VARIADIC_OPS_EQUAL(
+ GET_EXPR(dwarf::DW_OP_LLVM_arg, 0, dwarf::DW_OP_LLVM_fragment, 16, 32),
+ GET_EXPR(dwarf::DW_OP_LLVM_fragment, 16, 32));
+ EXPECT_NON_VARIADIC_OPS_EQUAL(
+ GET_EXPR(dwarf::DW_OP_LLVM_arg, 0, dwarf::DW_OP_stack_value,
+ dwarf::DW_OP_LLVM_fragment, 24, 32),
+ GET_EXPR(dwarf::DW_OP_stack_value, dwarf::DW_OP_LLVM_fragment, 24, 32));
+ EXPECT_NON_VARIADIC_OPS_EQUAL(
+ GET_EXPR(dwarf::DW_OP_LLVM_arg, 0, dwarf::DW_OP_plus_uconst, 4),
+ GET_EXPR(dwarf::DW_OP_plus_uconst, 4));
+ EXPECT_NON_VARIADIC_OPS_EQUAL(
+ GET_EXPR(dwarf::DW_OP_LLVM_arg, 0, dwarf::DW_OP_plus_uconst, 4,
+ dwarf::DW_OP_stack_value),
+ GET_EXPR(dwarf::DW_OP_plus_uconst, 4, dwarf::DW_OP_stack_value));
+ EXPECT_NON_VARIADIC_OPS_EQUAL(
+ GET_EXPR(dwarf::DW_OP_LLVM_arg, 0, dwarf::DW_OP_plus_uconst, 6,
+ dwarf::DW_OP_stack_value, dwarf::DW_OP_LLVM_fragment, 32, 32),
+ GET_EXPR(dwarf::DW_OP_plus_uconst, 6, dwarf::DW_OP_stack_value,
+ dwarf::DW_OP_LLVM_fragment, 32, 32));
+ EXPECT_NON_VARIADIC_OPS_EQUAL(GET_EXPR(dwarf::DW_OP_LLVM_arg, 0,
+ dwarf::DW_OP_plus_uconst, 14,
+ dwarf::DW_OP_LLVM_fragment, 32, 32),
+ GET_EXPR(dwarf::DW_OP_plus_uconst, 14,
+ dwarf::DW_OP_LLVM_fragment, 32, 32));
+
+ // Variadic expressions that have any LLVM_args other than a leading
+ // `LLVM_arg 0` cannot be converted and so should return std::nullopt.
+ EXPECT_INVALID_CONVERSION(GET_EXPR(
+ dwarf::DW_OP_LLVM_arg, 0, dwarf::DW_OP_LLVM_arg, 1, dwarf::DW_OP_mul));
+ EXPECT_INVALID_CONVERSION(
+ GET_EXPR(dwarf::DW_OP_LLVM_arg, 0, dwarf::DW_OP_LLVM_arg, 1,
+ dwarf::DW_OP_plus, dwarf::DW_OP_stack_value));
+ EXPECT_INVALID_CONVERSION(
+ GET_EXPR(dwarf::DW_OP_LLVM_arg, 0, dwarf::DW_OP_LLVM_arg, 0,
+ dwarf::DW_OP_minus, dwarf::DW_OP_stack_value));
+ EXPECT_INVALID_CONVERSION(GET_EXPR(dwarf::DW_OP_constu, 5,
+ dwarf::DW_OP_LLVM_arg, 0, dwarf::DW_OP_div,
+ dwarf::DW_OP_stack_value));
+
+#undef EXPECT_CONVERT_IS_NOOP
+#undef EXPECT_NON_VARIADIC_OPS_EQUAL
+#undef EXPECT_INVALID_CONVERSION
+#undef GET_EXPR
+}
+
TEST_F(DIExpressionTest, replaceArg) {
#define EXPECT_REPLACE_ARG_EQ(Expr, OldArg, NewArg, ...) \
do { \
projects / platform / upstream / llvm.git / commitdiff