/// the intrinsic for later emission to the StackMap.
extern char &StackMapLivenessID;
- /// LiveDebugValues pass
- extern char &LiveDebugValuesID;
-
/// createJumpInstrTables - This pass creates jump-instruction tables.
ModulePass *createJumpInstrTablesPass();
void initializeMachineFunctionPrinterPassPass(PassRegistry&);
void initializeMIRPrintingPassPass(PassRegistry&);
void initializeStackMapLivenessPass(PassRegistry&);
-void initializeLiveDebugValuesPass(PassRegistry&);
void initializeMachineCombinerPass(PassRegistry &);
void initializeLoadCombinePass(PassRegistry&);
void initializeRewriteSymbolsPass(PassRegistry&);
ExecutionDepsFix.cpp
ExpandISelPseudos.cpp
ExpandPostRAPseudos.cpp
- LiveDebugValues.cpp
FaultMaps.cpp
FuncletLayout.cpp
GCMetadata.cpp
initializeSlotIndexesPass(Registry);
initializeStackColoringPass(Registry);
initializeStackMapLivenessPass(Registry);
- initializeLiveDebugValuesPass(Registry);
initializeStackProtectorPass(Registry);
initializeStackSlotColoringPass(Registry);
initializeTailDuplicatePassPass(Registry);
+++ /dev/null
-//===------ LiveDebugValues.cpp - Tracking Debug Value MIs ----------------===//
-//
-// The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-///
-/// This pass implements a data flow analysis that propagates debug location
-/// information by inserting additional DBG_VALUE instructions into the machine
-/// instruction stream. The pass internally builds debug location liveness
-/// ranges to determine the points where additional DBG_VALUEs need to be
-/// inserted.
-///
-/// This is a separate pass from DbgValueHistoryCalculator to facilitate
-/// testing and improve modularity.
-///
-//===----------------------------------------------------------------------===//
-
-#include "llvm/ADT/Statistic.h"
-#include "llvm/ADT/SmallVector.h"
-#include "llvm/CodeGen/MachineFunction.h"
-#include "llvm/CodeGen/MachineFunctionPass.h"
-#include "llvm/CodeGen/MachineInstrBuilder.h"
-#include "llvm/CodeGen/Passes.h"
-#include "llvm/Support/CommandLine.h"
-#include "llvm/Support/Debug.h"
-#include "llvm/Support/raw_ostream.h"
-#include "llvm/Target/TargetRegisterInfo.h"
-#include "llvm/Target/TargetInstrInfo.h"
-#include "llvm/Target/TargetSubtargetInfo.h"
-#include <list>
-#include <deque>
-
-using namespace llvm;
-
-#define DEBUG_TYPE "live-debug-values"
-
-STATISTIC(NumInserted, "Number of DBG_VALUE instructions inserted");
-
-namespace {
-
-class LiveDebugValues : public MachineFunctionPass {
-
-private:
- const TargetRegisterInfo *TRI;
- const TargetInstrInfo *TII;
-
- typedef std::pair<const DILocalVariable *, const DILocation *>
- InlinedVariable;
-
- /// A potentially inlined instance of a variable.
- struct DebugVariable {
- const DILocalVariable *Var;
- const DILocation *InlinedAt;
-
- DebugVariable(const DILocalVariable *_var, const DILocation *_inlinedAt)
- : Var(_var), InlinedAt(_inlinedAt) {}
-
- bool operator==(const DebugVariable &DV) const {
- return (Var == DV.Var) && (InlinedAt == DV.InlinedAt);
- }
- };
-
- /// Member variables and functions for Range Extension across basic blocks.
- struct VarLoc {
- DebugVariable Var;
- const MachineInstr *MI; // MachineInstr should be a DBG_VALUE instr.
-
- VarLoc(DebugVariable _var, const MachineInstr *_mi) : Var(_var), MI(_mi) {}
-
- bool operator==(const VarLoc &V) const;
- };
-
- typedef std::list<VarLoc> VarLocList;
- typedef SmallDenseMap<const MachineBasicBlock *, VarLocList> VarLocInMBB;
-
- bool OLChanged; // OutgoingLocs got changed for this bb.
- bool MBBJoined; // The MBB was joined.
-
- void transferDebugValue(MachineInstr &MI, VarLocList &OpenRanges);
- void transferRegisterDef(MachineInstr &MI, VarLocList &OpenRanges);
- void transferTerminatorInst(MachineInstr &MI, VarLocList &OpenRanges,
- VarLocInMBB &OutLocs);
- void transfer(MachineInstr &MI, VarLocList &OpenRanges, VarLocInMBB &OutLocs);
-
- void join(MachineBasicBlock &MBB, VarLocInMBB &OutLocs, VarLocInMBB &InLocs);
-
- bool ExtendRanges(MachineFunction &MF);
-
-public:
- static char ID;
-
- /// Default construct and initialize the pass.
- LiveDebugValues();
-
- /// Tell the pass manager which passes we depend on and what
- /// information we preserve.
- void getAnalysisUsage(AnalysisUsage &AU) const override;
-
- /// Print to ostream with a message.
- void printVarLocInMBB(const VarLocInMBB &V, const char *msg,
- raw_ostream &Out) const;
-
- /// Calculate the liveness information for the given machine function.
- bool runOnMachineFunction(MachineFunction &MF) override;
-};
-} // namespace
-
-//===----------------------------------------------------------------------===//
-// Implementation
-//===----------------------------------------------------------------------===//
-
-char LiveDebugValues::ID = 0;
-char &llvm::LiveDebugValuesID = LiveDebugValues::ID;
-INITIALIZE_PASS(LiveDebugValues, "livedebugvalues", "Live DEBUG_VALUE analysis",
- false, false)
-
-/// Default construct and initialize the pass.
-LiveDebugValues::LiveDebugValues() : MachineFunctionPass(ID) {
- initializeLiveDebugValuesPass(*PassRegistry::getPassRegistry());
-}
-
-/// Tell the pass manager which passes we depend on and what information we
-/// preserve.
-void LiveDebugValues::getAnalysisUsage(AnalysisUsage &AU) const {
- MachineFunctionPass::getAnalysisUsage(AU);
-}
-
-// \brief If @MI is a DBG_VALUE with debug value described by a defined
-// register, returns the number of this register. In the other case, returns 0.
-static unsigned isDescribedByReg(const MachineInstr &MI) {
- assert(MI.isDebugValue());
- assert(MI.getNumOperands() == 4);
- // If location of variable is described using a register (directly or
- // indirecltly), this register is always a first operand.
- return MI.getOperand(0).isReg() ? MI.getOperand(0).getReg() : 0;
-}
-
-// \brief This function takes two DBG_VALUE instructions and returns true
-// if their offsets are equal; otherwise returns false.
-static bool areOffsetsEqual(const MachineInstr &MI1, const MachineInstr &MI2) {
- assert(MI1.isDebugValue());
- assert(MI1.getNumOperands() == 4);
-
- assert(MI2.isDebugValue());
- assert(MI2.getNumOperands() == 4);
-
- if (!MI1.isIndirectDebugValue() && !MI2.isIndirectDebugValue())
- return true;
-
- // Check if both MIs are indirect and they are equal.
- if (MI1.isIndirectDebugValue() && MI2.isIndirectDebugValue())
- return MI1.getOperand(1).getImm() == MI2.getOperand(1).getImm();
-
- return false;
-}
-
-//===----------------------------------------------------------------------===//
-// Debug Range Extension Implementation
-//===----------------------------------------------------------------------===//
-
-void LiveDebugValues::printVarLocInMBB(const VarLocInMBB &V, const char *msg,
- raw_ostream &Out) const {
- Out << "Printing " << msg << ":\n";
- for (const auto &L : V) {
- Out << "MBB: " << L.first->getName() << ":\n";
- for (const auto &VLL : L.second) {
- Out << " Var: " << VLL.Var.Var->getName();
- Out << " MI: ";
- (*VLL.MI).dump();
- Out << "\n";
- }
- }
- Out << "\n";
-}
-
-bool LiveDebugValues::VarLoc::operator==(const VarLoc &V) const {
- return (Var == V.Var) && (isDescribedByReg(*MI) == isDescribedByReg(*V.MI)) &&
- (areOffsetsEqual(*MI, *V.MI));
-}
-
-/// End all previous ranges related to @MI and start a new range from @MI
-/// if it is a DBG_VALUE instr.
-void LiveDebugValues::transferDebugValue(MachineInstr &MI,
- VarLocList &OpenRanges) {
- if (!MI.isDebugValue())
- return;
- const DILocalVariable *RawVar = MI.getDebugVariable();
- assert(RawVar->isValidLocationForIntrinsic(MI.getDebugLoc()) &&
- "Expected inlined-at fields to agree");
- DebugVariable Var(RawVar, MI.getDebugLoc()->getInlinedAt());
-
- // End all previous ranges of Var.
- OpenRanges.erase(
- std::remove_if(OpenRanges.begin(), OpenRanges.end(),
- [&](const VarLoc &V) { return (Var == V.Var); }),
- OpenRanges.end());
-
- // Add Var to OpenRanges from this DBG_VALUE.
- // TODO: Currently handles DBG_VALUE which has only reg as location.
- if (isDescribedByReg(MI)) {
- VarLoc V(Var, &MI);
- OpenRanges.push_back(std::move(V));
- }
-}
-
-/// A definition of a register may mark the end of a range.
-void LiveDebugValues::transferRegisterDef(MachineInstr &MI,
- VarLocList &OpenRanges) {
- for (const MachineOperand &MO : MI.operands()) {
- if (!(MO.isReg() && MO.isDef() && MO.getReg()))
- continue;
- // Remove ranges of all aliased registers.
- for (MCRegAliasIterator RAI(MO.getReg(), TRI, true); RAI.isValid(); ++RAI)
- OpenRanges.erase(std::remove_if(OpenRanges.begin(), OpenRanges.end(),
- [&](const VarLoc &V) {
- return (*RAI == isDescribedByReg(*V.MI));
- }),
- OpenRanges.end());
- }
-}
-
-/// Terminate all open ranges at the end of the current basic block.
-void LiveDebugValues::transferTerminatorInst(MachineInstr &MI,
- VarLocList &OpenRanges,
- VarLocInMBB &OutLocs) {
- const MachineBasicBlock *CurMBB = MI.getParent();
- if (!(MI.isTerminator() || (&MI == &CurMBB->instr_back())))
- return;
-
- if (OpenRanges.empty())
- return;
-
- if (OutLocs.find(CurMBB) == OutLocs.end()) {
- // Create space for new Outgoing locs entries.
- VarLocList VLL;
- OutLocs.insert(std::make_pair(CurMBB, std::move(VLL)));
- }
- auto OL = OutLocs.find(CurMBB);
- assert(OL != OutLocs.end());
- VarLocList &VLL = OL->second;
-
- for (auto OR : OpenRanges) {
- // Copy OpenRanges to OutLocs, if not already present.
- assert(OR.MI->isDebugValue());
- DEBUG(dbgs() << "Add to OutLocs: "; OR.MI->dump(););
- if (std::find_if(VLL.begin(), VLL.end(),
- [&](const VarLoc &V) { return (OR == V); }) == VLL.end()) {
- VLL.push_back(std::move(OR));
- OLChanged = true;
- }
- }
- OpenRanges.clear();
-}
-
-/// This routine creates OpenRanges and OutLocs.
-void LiveDebugValues::transfer(MachineInstr &MI, VarLocList &OpenRanges,
- VarLocInMBB &OutLocs) {
- transferDebugValue(MI, OpenRanges);
- transferRegisterDef(MI, OpenRanges);
- transferTerminatorInst(MI, OpenRanges, OutLocs);
-}
-
-/// This routine joins the analysis results of all incoming edges in @MBB by
-/// inserting a new DBG_VALUE instruction at the start of the @MBB - if the same
-/// source variable in all the predecessors of @MBB reside in the same location.
-void LiveDebugValues::join(MachineBasicBlock &MBB, VarLocInMBB &OutLocs,
- VarLocInMBB &InLocs) {
- DEBUG(dbgs() << "join MBB: " << MBB.getName() << "\n");
-
- MBBJoined = false;
-
- VarLocList InLocsT; // Temporary incoming locations.
-
- // For all predecessors of this MBB, find the set of VarLocs that can be
- // joined.
- for (auto p : MBB.predecessors()) {
- auto OL = OutLocs.find(p);
- // Join is null in case of empty OutLocs from any of the pred.
- if (OL == OutLocs.end())
- return;
-
- // Just copy over the Out locs to incoming locs for the first predecessor.
- if (p == *MBB.pred_begin()) {
- InLocsT = OL->second;
- continue;
- }
-
- // Join with this predecessor.
- VarLocList &VLL = OL->second;
- InLocsT.erase(
- std::remove_if(InLocsT.begin(), InLocsT.end(), [&](VarLoc &ILT) {
- return (std::find_if(VLL.begin(), VLL.end(), [&](const VarLoc &V) {
- return (ILT == V);
- }) == VLL.end());
- }),
- InLocsT.end());
- }
-
- if (InLocsT.empty())
- return;
-
- if (InLocs.find(&MBB) == InLocs.end()) {
- // Create space for new Incoming locs entries.
- VarLocList VLL;
- InLocs.insert(std::make_pair(&MBB, std::move(VLL)));
- }
- auto IL = InLocs.find(&MBB);
- assert(IL != InLocs.end());
- VarLocList &ILL = IL->second;
-
- // Insert DBG_VALUE instructions, if not already inserted.
- for (auto ILT : InLocsT) {
- if (std::find_if(ILL.begin(), ILL.end(), [&](const VarLoc &I) {
- return (ILT == I);
- }) == ILL.end()) {
- // This VarLoc is not found in InLocs i.e. it is not yet inserted. So, a
- // new range is started for the var from the mbb's beginning by inserting
- // a new DBG_VALUE. transfer() will end this range however appropriate.
- const MachineInstr *DMI = ILT.MI;
- MachineInstr *MI =
- BuildMI(MBB, MBB.instr_begin(), DMI->getDebugLoc(), DMI->getDesc(),
- DMI->isIndirectDebugValue(), DMI->getOperand(0).getReg(), 0,
- DMI->getDebugVariable(), DMI->getDebugExpression());
- if (DMI->isIndirectDebugValue())
- MI->getOperand(1).setImm(DMI->getOperand(1).getImm());
- DEBUG(dbgs() << "Inserted: "; MI->dump(););
- ++NumInserted;
- MBBJoined = true; // rerun transfer().
-
- VarLoc V(ILT.Var, MI);
- ILL.push_back(std::move(V));
- }
- }
-}
-
-/// Calculate the liveness information for the given machine function and
-/// extend ranges across basic blocks.
-bool LiveDebugValues::ExtendRanges(MachineFunction &MF) {
-
- DEBUG(dbgs() << "\nDebug Range Extension\n");
-
- bool Changed = false;
- OLChanged = MBBJoined = false;
-
- VarLocList OpenRanges; // Ranges that are open until end of bb.
- VarLocInMBB OutLocs; // Ranges that exist beyond bb.
- VarLocInMBB InLocs; // Ranges that are incoming after joining.
-
- std::deque<MachineBasicBlock *> BBWorklist;
-
- // Initialize every mbb with OutLocs.
- for (auto &MBB : MF)
- for (auto &MI : MBB)
- transfer(MI, OpenRanges, OutLocs);
- DEBUG(printVarLocInMBB(OutLocs, "OutLocs after initialization", dbgs()));
-
- // Construct a worklist of MBBs.
- for (auto &MBB : MF)
- BBWorklist.push_back(&MBB);
-
- // Perform join() and transfer() using the worklist until the ranges converge
- // Ranges have converged when the worklist is empty.
- while (!BBWorklist.empty()) {
- MachineBasicBlock *MBB = BBWorklist.front();
- BBWorklist.pop_front();
-
- join(*MBB, OutLocs, InLocs);
-
- if (MBBJoined) {
- Changed = true;
- for (auto &MI : *MBB)
- transfer(MI, OpenRanges, OutLocs);
- DEBUG(printVarLocInMBB(OutLocs, "OutLocs after propagating", dbgs()));
- DEBUG(printVarLocInMBB(InLocs, "InLocs after propagating", dbgs()));
-
- if (OLChanged) {
- OLChanged = false;
- for (auto s : MBB->successors())
- if (std::find(BBWorklist.begin(), BBWorklist.end(), s) ==
- BBWorklist.end()) // add if not already present.
- BBWorklist.push_back(s);
- }
- }
- }
- DEBUG(printVarLocInMBB(OutLocs, "Final OutLocs", dbgs()));
- DEBUG(printVarLocInMBB(InLocs, "Final InLocs", dbgs()));
- return Changed;
-}
-
-bool LiveDebugValues::runOnMachineFunction(MachineFunction &MF) {
- TRI = MF.getSubtarget().getRegisterInfo();
- TII = MF.getSubtarget().getInstrInfo();
-
- bool Changed = false;
-
- Changed |= ExtendRanges(MF);
-
- return Changed;
-}
addPass(&FuncletLayoutID, false);
addPass(&StackMapLivenessID, false);
- addPass(&LiveDebugValuesID);
AddingMachinePasses = false;
}
+++ /dev/null
-if not 'X86' in config.root.targets:
- config.unsupported = True
+++ /dev/null
-# RUN: llc -run-pass=livedebugvalues -march=x86-64 -o /dev/null %s | FileCheck %s
-
-# Test the extension of debug ranges from 3 predecessors.
-# Generated from the source file LiveDebugValues-3preds.c:
-# #include <stdio.h>
-# int add(int x, int y, int z, int a) {
-# int i;
-# for (i = 0; i < x * y; i++) {
-# if (i < x) {
-# a = a * x;
-# break;
-# }
-# if (i < y) {
-# a = a * y;
-# break;
-# }
-# if (i < z) {
-# a = a * z;
-# break;
-# }
-# }
-# return a;
-# }
-# with clang -g -O1 -c -emit-llvm LiveDebugValues-3preds.c -S -o live-debug-values-3preds.ll
-# then llc -stop-after stackmap-liveness live-debug-values-3preds.ll -o /dev/null > live-debug-values-3preds.mir
-
-# DBG_VALUE for variables "x", "y" and "z" are extended into BB#9 from its
-# predecessors BB#0, BB#2 and BB#8.
-# CHECK: bb.9.for.end:
-# CHECK: DBG_VALUE debug-use %edx, debug-use _, !11, !17, debug-location !21
-# CHECK-NEXT: DBG_VALUE debug-use %esi, debug-use _, !10, !17, debug-location !19
-# CHECK-NEXT: DBG_VALUE debug-use %edi, debug-use _, !9, !17, debug-location !18
-
-
---- |
- ; ModuleID = 'live-debug-values-3preds.ll'
- target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
- target triple = "x86_64-unknown-linux-gnu"
-
- ; Function Attrs: norecurse nounwind readnone uwtable
- define i32 @add(i32 %x, i32 %y, i32 %z, i32 %a) #0 !dbg !4 {
- entry:
- tail call void @llvm.dbg.value(metadata i32 %x, i64 0, metadata !9, metadata !17), !dbg !18
- tail call void @llvm.dbg.value(metadata i32 %y, i64 0, metadata !10, metadata !17), !dbg !19
- tail call void @llvm.dbg.value(metadata i32 %z, i64 0, metadata !11, metadata !17), !dbg !21
- tail call void @llvm.dbg.value(metadata i32 %a, i64 0, metadata !12, metadata !17), !dbg !23
- tail call void @llvm.dbg.value(metadata i32 0, i64 0, metadata !13, metadata !17), !dbg !25
- %mul = mul nsw i32 %y, %x, !dbg !26
- %cmp.24 = icmp sgt i32 %mul, 0, !dbg !30
- br i1 %cmp.24, label %for.body.preheader, label %for.end, !dbg !31
-
- for.body.preheader: ; preds = %entry
- br label %for.body, !dbg !32
-
- for.cond: ; preds = %if.end.6
- %cmp = icmp slt i32 %inc, %mul, !dbg !30
- br i1 %cmp, label %for.body, label %for.end, !dbg !31
-
- for.body: ; preds = %for.cond, %for.body.preheader
- %i.025 = phi i32 [ %inc, %for.cond ], [ 0, %for.body.preheader ]
- %0 = icmp sgt i32 %x, 0
- br i1 %0, label %if.then, label %if.end, !dbg !35
-
- if.then: ; preds = %for.body
- %mul2 = mul nsw i32 %a, %x, !dbg !36
- tail call void @llvm.dbg.value(metadata i32 %mul2, i64 0, metadata !12, metadata !17), !dbg !23
- br label %for.end, !dbg !38
-
- if.end: ; preds = %for.body
- %1 = icmp sgt i32 %y, 0
- br i1 %1, label %if.then.4, label %if.end.6, !dbg !39
-
- if.then.4: ; preds = %if.end
- %mul5 = mul nsw i32 %a, %y, !dbg !40
- tail call void @llvm.dbg.value(metadata i32 %mul5, i64 0, metadata !12, metadata !17), !dbg !23
- br label %for.end, !dbg !43
-
- if.end.6: ; preds = %if.end
- %2 = icmp sgt i32 %z, 0
- %inc = add nuw nsw i32 %i.025, 1, !dbg !44
- tail call void @llvm.dbg.value(metadata i32 %inc, i64 0, metadata !13, metadata !17), !dbg !25
- br i1 %2, label %if.then.8, label %for.cond, !dbg !45
-
- if.then.8: ; preds = %if.end.6
- %mul9 = mul nsw i32 %a, %z, !dbg !46
- tail call void @llvm.dbg.value(metadata i32 %mul9, i64 0, metadata !12, metadata !17), !dbg !23
- br label %for.end, !dbg !49
-
- for.end: ; preds = %for.cond, %if.then.8, %if.then.4, %if.then, %entry
- %a.addr.0 = phi i32 [ %mul2, %if.then ], [ %mul5, %if.then.4 ], [ %mul9, %if.then.8 ], [ %a, %entry ], [ %a, %for.cond ]
- ret i32 %a.addr.0, !dbg !50
- }
-
- ; Function Attrs: nounwind readnone
- declare void @llvm.dbg.value(metadata, i64, metadata, metadata) #1
-
- attributes #0 = { norecurse nounwind readnone uwtable }
- attributes #1 = { nounwind readnone }
-
- !llvm.dbg.cu = !{!0}
- !llvm.module.flags = !{!14, !15}
- !llvm.ident = !{!16}
-
- !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 3.8.0 (trunk 253049) ", isOptimized: true, runtimeVersion: 0, emissionKind: 1, enums: !2, subprograms: !3)
- !1 = !DIFile(filename: "LiveDebugValues-3preds.c", directory: "/home/vt/julia/test/tvvikram")
- !2 = !{}
- !3 = !{!4}
- !4 = distinct !DISubprogram(name: "add", scope: !1, file: !1, line: 1, type: !5, isLocal: false, isDefinition: true, scopeLine: 1, flags: DIFlagPrototyped, isOptimized: true, variables: !8)
- !5 = !DISubroutineType(types: !6)
- !6 = !{!7, !7, !7, !7, !7}
- !7 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
- !8 = !{!9, !10, !11, !12, !13}
- !9 = !DILocalVariable(name: "x", arg: 1, scope: !4, file: !1, line: 1, type: !7)
- !10 = !DILocalVariable(name: "y", arg: 2, scope: !4, file: !1, line: 1, type: !7)
- !11 = !DILocalVariable(name: "z", arg: 3, scope: !4, file: !1, line: 1, type: !7)
- !12 = !DILocalVariable(name: "a", arg: 4, scope: !4, file: !1, line: 1, type: !7)
- !13 = !DILocalVariable(name: "i", scope: !4, file: !1, line: 2, type: !7)
- !14 = !{i32 2, !"Dwarf Version", i32 4}
- !15 = !{i32 2, !"Debug Info Version", i32 3}
- !16 = !{!"clang version 3.8.0 (trunk 253049) "}
- !17 = !DIExpression()
- !18 = !DILocation(line: 1, column: 13, scope: !4)
- !19 = !DILocation(line: 1, column: 20, scope: !20)
- !20 = !DILexicalBlockFile(scope: !4, file: !1, discriminator: 1)
- !21 = !DILocation(line: 1, column: 27, scope: !22)
- !22 = !DILexicalBlockFile(scope: !4, file: !1, discriminator: 2)
- !23 = !DILocation(line: 1, column: 34, scope: !24)
- !24 = !DILexicalBlockFile(scope: !4, file: !1, discriminator: 3)
- !25 = !DILocation(line: 2, column: 7, scope: !20)
- !26 = !DILocation(line: 3, column: 21, scope: !27)
- !27 = !DILexicalBlockFile(scope: !28, file: !1, discriminator: 1)
- !28 = distinct !DILexicalBlock(scope: !29, file: !1, line: 3, column: 3)
- !29 = distinct !DILexicalBlock(scope: !4, file: !1, line: 3, column: 3)
- !30 = !DILocation(line: 3, column: 17, scope: !27)
- !31 = !DILocation(line: 3, column: 3, scope: !27)
- !32 = !DILocation(line: 4, column: 11, scope: !33)
- !33 = distinct !DILexicalBlock(scope: !34, file: !1, line: 4, column: 9)
- !34 = distinct !DILexicalBlock(scope: !28, file: !1, line: 3, column: 31)
- !35 = !DILocation(line: 4, column: 9, scope: !34)
- !36 = !DILocation(line: 5, column: 13, scope: !37)
- !37 = distinct !DILexicalBlock(scope: !33, file: !1, line: 4, column: 16)
- !38 = !DILocation(line: 6, column: 7, scope: !37)
- !39 = !DILocation(line: 8, column: 9, scope: !34)
- !40 = !DILocation(line: 9, column: 13, scope: !41)
- !41 = distinct !DILexicalBlock(scope: !42, file: !1, line: 8, column: 16)
- !42 = distinct !DILexicalBlock(scope: !34, file: !1, line: 8, column: 9)
- !43 = !DILocation(line: 10, column: 7, scope: !41)
- !44 = !DILocation(line: 3, column: 27, scope: !28)
- !45 = !DILocation(line: 12, column: 9, scope: !34)
- !46 = !DILocation(line: 13, column: 13, scope: !47)
- !47 = distinct !DILexicalBlock(scope: !48, file: !1, line: 12, column: 16)
- !48 = distinct !DILexicalBlock(scope: !34, file: !1, line: 12, column: 9)
- !49 = !DILocation(line: 14, column: 7, scope: !47)
- !50 = !DILocation(line: 17, column: 3, scope: !4)
-
-...
----
-name: add
-alignment: 4
-exposesReturnsTwice: false
-hasInlineAsm: false
-isSSA: false
-tracksRegLiveness: true
-tracksSubRegLiveness: false
-liveins:
- - { reg: '%edi' }
- - { reg: '%esi' }
- - { reg: '%edx' }
- - { reg: '%ecx' }
-frameInfo:
- isFrameAddressTaken: false
- isReturnAddressTaken: false
- hasStackMap: false
- hasPatchPoint: false
- stackSize: 0
- offsetAdjustment: 0
- maxAlignment: 0
- adjustsStack: false
- hasCalls: false
- maxCallFrameSize: 0
- hasOpaqueSPAdjustment: false
- hasVAStart: false
- hasMustTailInVarArgFunc: false
-body: |
- bb.0.entry:
- successors: %bb.1.for.body.preheader(20), %bb.9.for.end(12)
- liveins: %ecx, %edi, %edx, %esi
-
- DBG_VALUE debug-use %edi, debug-use _, !9, !17, debug-location !18
- DBG_VALUE debug-use %esi, debug-use _, !10, !17, debug-location !19
- DBG_VALUE debug-use %edx, debug-use _, !11, !17, debug-location !21
- DBG_VALUE debug-use %ecx, debug-use _, !12, !17, debug-location !23
- DBG_VALUE 0, 0, !13, !17, debug-location !25
- %r8d = MOV32rr %esi, debug-location !26
- %r8d = IMUL32rr killed %r8d, %edi, implicit-def dead %eflags, debug-location !26
- TEST32rr %r8d, %r8d, implicit-def %eflags, debug-location !31
- JLE_1 %bb.9.for.end, implicit %eflags
-
- bb.1.for.body.preheader:
- successors: %bb.3.for.body(0)
- liveins: %ecx, %edi, %edx, %esi, %r8d
-
- DBG_VALUE debug-use %edi, debug-use _, !9, !17, debug-location !18
- DBG_VALUE debug-use %esi, debug-use _, !10, !17, debug-location !19
- DBG_VALUE debug-use %edx, debug-use _, !11, !17, debug-location !21
- DBG_VALUE debug-use %ecx, debug-use _, !12, !17, debug-location !23
- DBG_VALUE 0, 0, !13, !17, debug-location !25
- %eax = XOR32rr undef %eax, undef %eax, implicit-def dead %eflags
-
- bb.3.for.body (align 4):
- successors: %bb.4.if.then(4), %bb.5.if.end(124)
- liveins: %eax, %ecx, %edi, %edx, %esi, %r8d
-
- DBG_VALUE debug-use %edi, debug-use _, !9, !17, debug-location !18
- DBG_VALUE debug-use %esi, debug-use _, !10, !17, debug-location !19
- DBG_VALUE debug-use %edx, debug-use _, !11, !17, debug-location !21
- DBG_VALUE debug-use %ecx, debug-use _, !12, !17, debug-location !23
- DBG_VALUE 0, 0, !13, !17, debug-location !25
- TEST32rr %edi, %edi, implicit-def %eflags, debug-location !35
- JG_1 %bb.4.if.then, implicit %eflags
-
- bb.5.if.end:
- successors: %bb.6.if.then.4(4), %bb.7.if.end.6(124)
- liveins: %eax, %ecx, %edi, %edx, %esi, %r8d
-
- DBG_VALUE debug-use %edi, debug-use _, !9, !17, debug-location !18
- DBG_VALUE debug-use %esi, debug-use _, !10, !17, debug-location !19
- DBG_VALUE debug-use %edx, debug-use _, !11, !17, debug-location !21
- DBG_VALUE debug-use %ecx, debug-use _, !12, !17, debug-location !23
- DBG_VALUE 0, 0, !13, !17, debug-location !25
- TEST32rr %esi, %esi, implicit-def %eflags, debug-location !39
- JG_1 %bb.6.if.then.4, implicit %eflags
-
- bb.7.if.end.6:
- successors: %bb.8.if.then.8(4), %bb.2.for.cond(124)
- liveins: %eax, %ecx, %edi, %edx, %esi, %r8d
-
- DBG_VALUE debug-use %edi, debug-use _, !9, !17, debug-location !18
- DBG_VALUE debug-use %esi, debug-use _, !10, !17, debug-location !19
- DBG_VALUE debug-use %edx, debug-use _, !11, !17, debug-location !21
- DBG_VALUE debug-use %ecx, debug-use _, !12, !17, debug-location !23
- DBG_VALUE 0, 0, !13, !17, debug-location !25
- TEST32rr %edx, %edx, implicit-def %eflags, debug-location !45
- JG_1 %bb.8.if.then.8, implicit %eflags
-
- bb.2.for.cond:
- successors: %bb.3.for.body(124), %bb.9.for.end(4)
- liveins: %eax, %ecx, %edi, %edx, %esi, %r8d
-
- DBG_VALUE debug-use %edi, debug-use _, !9, !17, debug-location !18
- DBG_VALUE debug-use %esi, debug-use _, !10, !17, debug-location !19
- DBG_VALUE debug-use %edx, debug-use _, !11, !17, debug-location !21
- DBG_VALUE debug-use %ecx, debug-use _, !12, !17, debug-location !23
- DBG_VALUE 0, 0, !13, !17, debug-location !25
- %eax = INC32r killed %eax, implicit-def dead %eflags, debug-location !44
- DBG_VALUE debug-use %eax, debug-use _, !13, !17, debug-location !25
- CMP32rr %eax, %r8d, implicit-def %eflags, debug-location !31
- JL_1 %bb.3.for.body, implicit %eflags
- JMP_1 %bb.9.for.end
-
- bb.4.if.then:
- liveins: %ecx, %edi
-
- DBG_VALUE debug-use %edi, debug-use _, !9, !17, debug-location !18
- DBG_VALUE debug-use %ecx, debug-use _, !12, !17, debug-location !23
- DBG_VALUE 0, 0, !13, !17, debug-location !25
- %ecx = IMUL32rr killed %ecx, killed %edi, implicit-def dead %eflags, debug-location !36
- DBG_VALUE 0, 0, !13, !17, debug-location !25
- %eax = MOV32rr killed %ecx, debug-location !50
- RETQ %eax, debug-location !50
-
- bb.6.if.then.4:
- liveins: %ecx, %esi
-
- DBG_VALUE debug-use %esi, debug-use _, !10, !17, debug-location !19
- DBG_VALUE debug-use %ecx, debug-use _, !12, !17, debug-location !23
- DBG_VALUE 0, 0, !13, !17, debug-location !25
- %ecx = IMUL32rr killed %ecx, killed %esi, implicit-def dead %eflags, debug-location !40
- DBG_VALUE 0, 0, !13, !17, debug-location !25
- %eax = MOV32rr killed %ecx, debug-location !50
- RETQ %eax, debug-location !50
-
- bb.8.if.then.8:
- successors: %bb.9.for.end(0)
- liveins: %ecx, %edx
-
- DBG_VALUE debug-use %edx, debug-use _, !11, !17, debug-location !21
- DBG_VALUE debug-use %ecx, debug-use _, !12, !17, debug-location !23
- DBG_VALUE 0, 0, !13, !17, debug-location !25
- %ecx = IMUL32rr killed %ecx, killed %edx, implicit-def dead %eflags, debug-location !46
-
- bb.9.for.end:
- liveins: %ecx
-
- DBG_VALUE 0, 0, !13, !17, debug-location !25
- %eax = MOV32rr killed %ecx, debug-location !50
- RETQ %eax, debug-location !50
-
-...
+++ /dev/null
-# RUN: llc -run-pass=livedebugvalues -march=x86-64 -o /dev/null %s | FileCheck %s
-
-# Test the extension of debug ranges from predecessors.
-# Generated from the source file LiveDebugValues.c:
-# #include <stdio.h>
-# int m;
-# extern int inc(int n);
-# extern int change(int n);
-# extern int modify(int n);
-# int main(int argc, char **argv) {
-# int n;
-# if (argc != 2)
-# n = 2;
-# else
-# n = atoi(argv[1]);
-# n = change(n);
-# if (n > 10) {
-# m = modify(n);
-# m = m + n; // var `m' doesn't has a dbg.value
-# }
-# else
-# m = inc(n); // var `m' doesn't has a dbg.value
-# printf("m(main): %d\n", m);
-# return 0;
-# }
-# with clang -g -O3 -c -emit-llvm LiveDebugValues.c -S -o live-debug-values.ll
-# then llc -stop-after stackmap-liveness live-debug-values.ll -o /dev/null > live-debug-values.mir
-# This case will also produce multiple locations but only the debug range
-# extension is tested here. This test case is tested with DWARF information under
-# llvm/test/DebugInfo/live-debug-values.ll and present here for testing under
-# MIR->MIR serialization.
-
-# DBG_VALUE for variable "n" is extended into BB#5 from its predecessors BB#3
-# and BB#4.
-# CHECK: bb.5.if.end.7:
-# CHECK: DBG_VALUE debug-use %rsi, debug-use _, !13, !20, debug-location !22
-# CHECK-NEXT: DBG_VALUE debug-use %ebx, debug-use _, !14, !20, debug-location !33
-
-
---- |
- ; ModuleID = 'live-debug-values.ll'
- target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
- target triple = "x86_64-unknown-linux-gnu"
-
- @m = common global i32 0, align 4
- @.str = private unnamed_addr constant [13 x i8] c"m(main): %d\0A\00", align 1
-
- ; Function Attrs: nounwind uwtable
- define i32 @main(i32 %argc, i8** nocapture readonly %argv) #0 !dbg !4 {
- entry:
- tail call void @llvm.dbg.value(metadata i32 %argc, i64 0, metadata !12, metadata !20), !dbg !21
- tail call void @llvm.dbg.value(metadata i8** %argv, i64 0, metadata !13, metadata !20), !dbg !22
- %cmp = icmp eq i32 %argc, 2, !dbg !24
- br i1 %cmp, label %if.else, label %if.end, !dbg !26
-
- if.else: ; preds = %entry
- %arrayidx = getelementptr inbounds i8*, i8** %argv, i64 1, !dbg !27
- %0 = load i8*, i8** %arrayidx, align 8, !dbg !27, !tbaa !28
- %call = tail call i32 (i8*, ...) bitcast (i32 (...)* @atoi to i32 (i8*, ...)*)(i8* %0) #4, !dbg !32
- tail call void @llvm.dbg.value(metadata i32 %call, i64 0, metadata !14, metadata !20), !dbg !33
- br label %if.end
-
- if.end: ; preds = %if.else, %entry
- %n.0 = phi i32 [ %call, %if.else ], [ 2, %entry ]
- %call1 = tail call i32 @change(i32 %n.0) #4, !dbg !34
- tail call void @llvm.dbg.value(metadata i32 %call1, i64 0, metadata !14, metadata !20), !dbg !33
- %cmp2 = icmp sgt i32 %call1, 10, !dbg !35
- br i1 %cmp2, label %if.then.3, label %if.else.5, !dbg !37
-
- if.then.3: ; preds = %if.end
- %call4 = tail call i32 @modify(i32 %call1) #4, !dbg !38
- %add = add nsw i32 %call4, %call1, !dbg !40
- br label %if.end.7, !dbg !41
-
- if.else.5: ; preds = %if.end
- %call6 = tail call i32 @inc(i32 %call1) #4, !dbg !42
- br label %if.end.7
-
- if.end.7: ; preds = %if.else.5, %if.then.3
- %storemerge = phi i32 [ %call6, %if.else.5 ], [ %add, %if.then.3 ]
- store i32 %storemerge, i32* @m, align 4, !dbg !43, !tbaa !44
- %call8 = tail call i32 (i8*, ...) @printf(i8* nonnull getelementptr inbounds ([13 x i8], [13 x i8]* @.str, i64 0, i64 0), i32 %storemerge) #4, !dbg !46
- ret i32 0, !dbg !47
- }
-
- declare i32 @atoi(...) #1
-
- declare i32 @change(i32) #1
-
- declare i32 @modify(i32) #1
-
- declare i32 @inc(i32) #1
-
- ; Function Attrs: nounwind
- declare i32 @printf(i8* nocapture readonly, ...) #2
-
- ; Function Attrs: nounwind readnone
- declare void @llvm.dbg.value(metadata, i64, metadata, metadata) #3
-
- attributes #0 = { nounwind uwtable }
- attributes #1 = { nounwind }
- attributes #2 = { nounwind }
- attributes #3 = { nounwind readnone }
- attributes #4 = { nounwind }
-
- !llvm.dbg.cu = !{!0}
- !llvm.module.flags = !{!17, !18}
- !llvm.ident = !{!19}
-
- !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 3.8.0 (trunk 253049) ", isOptimized: true, runtimeVersion: 0, emissionKind: 1, enums: !2, subprograms: !3, globals: !15)
- !1 = !DIFile(filename: "LiveDebugValues.c", directory: "/home/vt/julia/test/tvvikram")
- !2 = !{}
- !3 = !{!4}
- !4 = distinct !DISubprogram(name: "main", scope: !1, file: !1, line: 6, type: !5, isLocal: false, isDefinition: true, scopeLine: 6, flags: DIFlagPrototyped, isOptimized: true, variables: !11)
- !5 = !DISubroutineType(types: !6)
- !6 = !{!7, !7, !8}
- !7 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
- !8 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !9, size: 64, align: 64)
- !9 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !10, size: 64, align: 64)
- !10 = !DIBasicType(name: "char", size: 8, align: 8, encoding: DW_ATE_signed_char)
- !11 = !{!12, !13, !14}
- !12 = !DILocalVariable(name: "argc", arg: 1, scope: !4, file: !1, line: 6, type: !7)
- !13 = !DILocalVariable(name: "argv", arg: 2, scope: !4, file: !1, line: 6, type: !8)
- !14 = !DILocalVariable(name: "n", scope: !4, file: !1, line: 7, type: !7)
- !15 = !{!16}
- !16 = !DIGlobalVariable(name: "m", scope: !0, file: !1, line: 2, type: !7, isLocal: false, isDefinition: true, variable: i32* @m)
- !17 = !{i32 2, !"Dwarf Version", i32 4}
- !18 = !{i32 2, !"Debug Info Version", i32 3}
- !19 = !{!"clang version 3.8.0 (trunk 253049)"}
- !20 = !DIExpression()
- !21 = !DILocation(line: 6, column: 14, scope: !4)
- !22 = !DILocation(line: 6, column: 27, scope: !23)
- !23 = !DILexicalBlockFile(scope: !4, file: !1, discriminator: 1)
- !24 = !DILocation(line: 8, column: 12, scope: !25)
- !25 = distinct !DILexicalBlock(scope: !4, file: !1, line: 8, column: 7)
- !26 = !DILocation(line: 8, column: 7, scope: !4)
- !27 = !DILocation(line: 11, column: 14, scope: !25)
- !28 = !{!29, !29, i64 0}
- !29 = !{!"any pointer", !30, i64 0}
- !30 = !{!"omnipotent char", !31, i64 0}
- !31 = !{!"Simple C/C++ TBAA"}
- !32 = !DILocation(line: 11, column: 9, scope: !25)
- !33 = !DILocation(line: 7, column: 7, scope: !23)
- !34 = !DILocation(line: 12, column: 7, scope: !4)
- !35 = !DILocation(line: 13, column: 9, scope: !36)
- !36 = distinct !DILexicalBlock(scope: !4, file: !1, line: 13, column: 7)
- !37 = !DILocation(line: 13, column: 7, scope: !4)
- !38 = !DILocation(line: 14, column: 9, scope: !39)
- !39 = distinct !DILexicalBlock(scope: !36, file: !1, line: 13, column: 15)
- !40 = !DILocation(line: 15, column: 11, scope: !39)
- !41 = !DILocation(line: 16, column: 3, scope: !39)
- !42 = !DILocation(line: 18, column: 9, scope: !36)
- !43 = !DILocation(line: 15, column: 7, scope: !39)
- !44 = !{!45, !45, i64 0}
- !45 = !{!"int", !30, i64 0}
- !46 = !DILocation(line: 19, column: 3, scope: !4)
- !47 = !DILocation(line: 20, column: 3, scope: !4)
-
-...
----
-name: main
-alignment: 4
-exposesReturnsTwice: false
-hasInlineAsm: false
-isSSA: false
-tracksRegLiveness: true
-tracksSubRegLiveness: false
-liveins:
- - { reg: '%edi' }
- - { reg: '%rsi' }
-calleeSavedRegisters: [ '%bh', '%bl', '%bp', '%bpl', '%bx', '%ebp', '%ebx',
- '%rbp', '%rbx', '%r12', '%r13', '%r14', '%r15',
- '%r12b', '%r13b', '%r14b', '%r15b', '%r12d', '%r13d',
- '%r14d', '%r15d', '%r12w', '%r13w', '%r14w', '%r15w' ]
-frameInfo:
- isFrameAddressTaken: false
- isReturnAddressTaken: false
- hasStackMap: false
- hasPatchPoint: false
- stackSize: 8
- offsetAdjustment: 0
- maxAlignment: 0
- adjustsStack: true
- hasCalls: true
- maxCallFrameSize: 0
- hasOpaqueSPAdjustment: false
- hasVAStart: false
- hasMustTailInVarArgFunc: false
-fixedStack:
- - { id: 0, type: spill-slot, offset: -16, size: 8, alignment: 16, callee-saved-register: '%rbx' }
-body: |
- bb.0.entry:
- successors: %bb.1.if.else(16), %bb.2.if.end(16)
- liveins: %edi, %rsi, %rbx
-
- frame-setup PUSH64r killed %rbx, implicit-def %rsp, implicit %rsp
- CFI_INSTRUCTION .cfi_def_cfa_offset 16
- CFI_INSTRUCTION .cfi_offset %rbx, -16
- DBG_VALUE debug-use %edi, debug-use _, !12, !20, debug-location !21
- DBG_VALUE debug-use %rsi, debug-use _, !13, !20, debug-location !22
- %eax = MOV32rr %edi
- DBG_VALUE debug-use %eax, debug-use _, !12, !20, debug-location !21
- %edi = MOV32ri 2
- CMP32ri8 killed %eax, 2, implicit-def %eflags, debug-location !26
- JNE_1 %bb.2.if.end, implicit %eflags
-
- bb.1.if.else:
- successors: %bb.2.if.end(0)
- liveins: %rsi
-
- DBG_VALUE debug-use %rsi, debug-use _, !13, !20, debug-location !22
- %rdi = MOV64rm killed %rsi, 1, _, 8, _, debug-location !27 :: (load 8 from %ir.arrayidx, !tbaa !28)
- dead %eax = XOR32rr undef %eax, undef %eax, implicit-def dead %eflags, implicit-def %al, debug-location !32
- CALL64pcrel32 @atoi, csr_64, implicit %rsp, implicit %rdi, implicit %al, implicit-def %rsp, implicit-def %eax, debug-location !32
- %edi = MOV32rr %eax, debug-location !32
- DBG_VALUE debug-use %edi, debug-use _, !14, !20, debug-location !33
-
- bb.2.if.end:
- successors: %bb.3.if.then.3(16), %bb.4.if.else.5(16)
- liveins: %edi
-
- CALL64pcrel32 @change, csr_64, implicit %rsp, implicit %edi, implicit-def %rsp, implicit-def %eax, debug-location !34
- %ebx = MOV32rr %eax, debug-location !34
- DBG_VALUE debug-use %ebx, debug-use _, !14, !20, debug-location !33
- CMP32ri8 %ebx, 11, implicit-def %eflags, debug-location !37
- JL_1 %bb.4.if.else.5, implicit killed %eflags, debug-location !37
-
- bb.3.if.then.3:
- successors: %bb.5.if.end.7(0)
- liveins: %ebx
-
- DBG_VALUE debug-use %ebx, debug-use _, !14, !20, debug-location !33
- %edi = MOV32rr %ebx, debug-location !38
- CALL64pcrel32 @modify, csr_64, implicit %rsp, implicit %edi, implicit-def %rsp, implicit-def %eax, debug-location !38
- %ecx = MOV32rr %eax, debug-location !38
- %ecx = ADD32rr killed %ecx, killed %ebx, implicit-def dead %eflags, debug-location !40
- JMP_1 %bb.5.if.end.7
-
- bb.4.if.else.5:
- successors: %bb.5.if.end.7(0)
- liveins: %ebx
-
- DBG_VALUE debug-use %ebx, debug-use _, !14, !20, debug-location !33
- %edi = MOV32rr killed %ebx, debug-location !42
- CALL64pcrel32 @inc, csr_64, implicit %rsp, implicit %edi, implicit-def %rsp, implicit-def %eax, debug-location !42
- %ecx = MOV32rr %eax, debug-location !42
-
- bb.5.if.end.7:
- liveins: %ecx
-
- MOV32mr %rip, 1, _, @m, _, %ecx, debug-location !43 :: (store 4 into @m, !tbaa !44)
- dead undef %edi = MOV32ri64 @.str, implicit-def %rdi, debug-location !46
- dead %eax = XOR32rr undef %eax, undef %eax, implicit-def dead %eflags, implicit-def %al, debug-location !47
- %esi = MOV32rr killed %ecx, debug-location !46
- CALL64pcrel32 @printf, csr_64, implicit %rsp, implicit %rdi, implicit %esi, implicit %al, implicit-def %rsp, implicit-def dead %eax, debug-location !46
- %eax = XOR32rr undef %eax, undef %eax, implicit-def dead %eflags, debug-location !47
- %rbx = POP64r implicit-def %rsp, implicit %rsp, debug-location !47
- RETQ %eax, debug-location !47
-
-...
+++ /dev/null
-config.suffixes = ['.mir']
-
; rdar://problem/14874886
;
; CHECK: ##DEBUG_VALUE: main:array <- [%R{{.*}}+0]
-; CHECK: ##DEBUG_VALUE: main:array <- [%R{{.*}}+0]
-; CHECK: ##DEBUG_VALUE: main:array <- [%R{{.*}}+0]
; CHECK-NOT: ##DEBUG_VALUE: main:array <- %R{{.*}}
target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
target triple = "x86_64-apple-macosx10.9.0"
; CHECK-NEXT: Location description: 11 00
; CHECK-NEXT: {{^$}}
; CHECK-NEXT: Beginning address index: 3
-; CHECK-NEXT: Length: 25
+; CHECK-NEXT: Length: 21
; CHECK-NEXT: Location description: 50 93 04
; CHECK: [[E]]: Beginning address index: 4
-; CHECK-NEXT: Length: 23
+; CHECK-NEXT: Length: 19
; CHECK-NEXT: Location description: 50 93 04
; CHECK: [[B]]: Beginning address index: 5
-; CHECK-NEXT: Length: 21
+; CHECK-NEXT: Length: 17
; CHECK-NEXT: Location description: 50 93 04
; CHECK: [[D]]: Beginning address index: 6
-; CHECK-NEXT: Length: 21
+; CHECK-NEXT: Length: 17
; CHECK-NEXT: Location description: 50 93 04
; Make sure we don't produce any relocations in any .dwo section (though in particular, debug_info.dwo)
; CHECK: .debug_loc
; CHECK: [[LOC]]:
; CHECK: Beginning address offset: 0x0000000000000000
-; CHECK: Ending address offset: 0x0000000000000008
+; CHECK: Ending address offset: 0x0000000000000004
; rdi, piece 0x00000008, piece 0x00000004, rsi, piece 0x00000004
; CHECK: Location description: 55 93 08 93 04 54 93 04
;
+++ /dev/null
-; RUN: llc -filetype=asm %s -o - | FileCheck %s
-
-; Test the extension of debug ranges from predecessors.
-; Generated from the source file LiveDebugValues.c:
-; #include <stdio.h>
-; int m;
-; extern int inc(int n);
-; extern int change(int n);
-; extern int modify(int n);
-; int main(int argc, char **argv) {
-; int n;
-; if (argc != 2)
-; n = 2;
-; else
-; n = atoi(argv[1]);
-; n = change(n);
-; if (n > 10) {
-; m = modify(n);
-; m = m + n; // var `m' doesn't has a dbg.value
-; }
-; else
-; m = inc(n); // var `m' doesn't has a dbg.value
-; printf("m(main): %d\n", m);
-; return 0;
-; }
-; with clang -g -O3 -emit-llvm -c LiveDebugValues.c -S -o live-debug-values.ll
-; This case will also produce multiple locations but only the debug range
-; extension is tested here.
-
-; DBG_VALUE for variable "n" is extended into BB#5 from its predecessors BB#3
-; and BB#4.
-; CHECK: .LBB0_5:
-; CHECK-NEXT: #DEBUG_VALUE: main:argv <- %RSI
-; CHECK-NEXT: #DEBUG_VALUE: main:n <- %EBX
-
-
-; ModuleID = 'LiveDebugValues.c'
-target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
-target triple = "x86_64-unknown-linux-gnu"
-
-@m = common global i32 0, align 4
-@.str = private unnamed_addr constant [13 x i8] c"m(main): %d\0A\00", align 1
-
-; Function Attrs: nounwind uwtable
-define i32 @main(i32 %argc, i8** nocapture readonly %argv) #0 !dbg !4 {
-entry:
- tail call void @llvm.dbg.value(metadata i32 %argc, i64 0, metadata !12, metadata !20), !dbg !21
- tail call void @llvm.dbg.value(metadata i8** %argv, i64 0, metadata !13, metadata !20), !dbg !22
- %cmp = icmp eq i32 %argc, 2, !dbg !24
- br i1 %cmp, label %if.else, label %if.end, !dbg !26
-
-if.else: ; preds = %entry
- %arrayidx = getelementptr inbounds i8*, i8** %argv, i64 1, !dbg !27
- %0 = load i8*, i8** %arrayidx, align 8, !dbg !27, !tbaa !28
- %call = tail call i32 (i8*, ...) bitcast (i32 (...)* @atoi to i32 (i8*, ...)*)(i8* %0) #4, !dbg !32
- tail call void @llvm.dbg.value(metadata i32 %call, i64 0, metadata !14, metadata !20), !dbg !33
- br label %if.end
-
-if.end: ; preds = %entry, %if.else
- %n.0 = phi i32 [ %call, %if.else ], [ 2, %entry ]
- %call1 = tail call i32 @change(i32 %n.0) #4, !dbg !34
- tail call void @llvm.dbg.value(metadata i32 %call1, i64 0, metadata !14, metadata !20), !dbg !33
- %cmp2 = icmp sgt i32 %call1, 10, !dbg !35
- br i1 %cmp2, label %if.then.3, label %if.else.5, !dbg !37
-
-if.then.3: ; preds = %if.end
- %call4 = tail call i32 @modify(i32 %call1) #4, !dbg !38
- %add = add nsw i32 %call4, %call1, !dbg !40
- br label %if.end.7, !dbg !41
-
-if.else.5: ; preds = %if.end
- %call6 = tail call i32 @inc(i32 %call1) #4, !dbg !42
- br label %if.end.7
-
-if.end.7: ; preds = %if.else.5, %if.then.3
- %storemerge = phi i32 [ %call6, %if.else.5 ], [ %add, %if.then.3 ]
- store i32 %storemerge, i32* @m, align 4, !dbg !43, !tbaa !44
- %call8 = tail call i32 (i8*, ...) @printf(i8* nonnull getelementptr inbounds ([13 x i8], [13 x i8]* @.str, i64 0, i64 0), i32 %storemerge) #4, !dbg !46
- ret i32 0, !dbg !47
-}
-
-declare i32 @atoi(...) #1
-
-declare i32 @change(i32) #1
-
-declare i32 @modify(i32) #1
-
-declare i32 @inc(i32) #1
-
-; Function Attrs: nounwind
-declare i32 @printf(i8* nocapture readonly, ...) #2
-
-; Function Attrs: nounwind readnone
-declare void @llvm.dbg.value(metadata, i64, metadata, metadata) #3
-
-attributes #0 = { nounwind uwtable }
-attributes #1 = { nounwind }
-attributes #2 = { nounwind }
-attributes #3 = { nounwind readnone }
-attributes #4 = { nounwind }
-
-!llvm.dbg.cu = !{!0}
-!llvm.module.flags = !{!17, !18}
-!llvm.ident = !{!19}
-
-!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 3.8.0 (trunk 253049) ", isOptimized: true, runtimeVersion: 0, emissionKind: 1, enums: !2, subprograms: !3, globals: !15)
-!1 = !DIFile(filename: "LiveDebugValues.c", directory: "/home/vt/julia/test/tvvikram")
-!2 = !{}
-!3 = !{!4}
-!4 = distinct !DISubprogram(name: "main", scope: !1, file: !1, line: 6, type: !5, isLocal: false, isDefinition: true, scopeLine: 6, flags: DIFlagPrototyped, isOptimized: true, variables: !11)
-!5 = !DISubroutineType(types: !6)
-!6 = !{!7, !7, !8}
-!7 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
-!8 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !9, size: 64, align: 64)
-!9 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !10, size: 64, align: 64)
-!10 = !DIBasicType(name: "char", size: 8, align: 8, encoding: DW_ATE_signed_char)
-!11 = !{!12, !13, !14}
-!12 = !DILocalVariable(name: "argc", arg: 1, scope: !4, file: !1, line: 6, type: !7)
-!13 = !DILocalVariable(name: "argv", arg: 2, scope: !4, file: !1, line: 6, type: !8)
-!14 = !DILocalVariable(name: "n", scope: !4, file: !1, line: 7, type: !7)
-!15 = !{!16}
-!16 = !DIGlobalVariable(name: "m", scope: !0, file: !1, line: 2, type: !7, isLocal: false, isDefinition: true, variable: i32* @m)
-!17 = !{i32 2, !"Dwarf Version", i32 4}
-!18 = !{i32 2, !"Debug Info Version", i32 3}
-!19 = !{!"clang version 3.8.0 (trunk 253049) "}
-!20 = !DIExpression()
-!21 = !DILocation(line: 6, column: 14, scope: !4)
-!22 = !DILocation(line: 6, column: 27, scope: !23)
-!23 = !DILexicalBlockFile(scope: !4, file: !1, discriminator: 1)
-!24 = !DILocation(line: 8, column: 12, scope: !25)
-!25 = distinct !DILexicalBlock(scope: !4, file: !1, line: 8, column: 7)
-!26 = !DILocation(line: 8, column: 7, scope: !4)
-!27 = !DILocation(line: 11, column: 14, scope: !25)
-!28 = !{!29, !29, i64 0}
-!29 = !{!"any pointer", !30, i64 0}
-!30 = !{!"omnipotent char", !31, i64 0}
-!31 = !{!"Simple C/C++ TBAA"}
-!32 = !DILocation(line: 11, column: 9, scope: !25)
-!33 = !DILocation(line: 7, column: 7, scope: !23)
-!34 = !DILocation(line: 12, column: 7, scope: !4)
-!35 = !DILocation(line: 13, column: 9, scope: !36)
-!36 = distinct !DILexicalBlock(scope: !4, file: !1, line: 13, column: 7)
-!37 = !DILocation(line: 13, column: 7, scope: !4)
-!38 = !DILocation(line: 14, column: 9, scope: !39)
-!39 = distinct !DILexicalBlock(scope: !36, file: !1, line: 13, column: 15)
-!40 = !DILocation(line: 15, column: 11, scope: !39)
-!41 = !DILocation(line: 16, column: 3, scope: !39)
-!42 = !DILocation(line: 18, column: 9, scope: !36)
-!43 = !DILocation(line: 15, column: 7, scope: !39)
-!44 = !{!45, !45, i64 0}
-!45 = !{!"int", !30, i64 0}
-!46 = !DILocation(line: 19, column: 3, scope: !4)
-!47 = !DILocation(line: 20, column: 3, scope: !4)
projects / oota-llvm.git / commitdiff