[llvm] r374582 - llvm-dwarfdump: Add verbose printing for debug_loclists
Michael Spencer via llvm-commits
llvm-commits at lists.llvm.org
Mon Oct 14 14:51:41 PDT 2019
On Mon, Oct 14, 2019 at 2:38 PM Michael Spencer <bigcheesegs at gmail.com>
wrote:
> I believe this commit broke the modules build. You added a dependency on "
> llvm/Bitcode/BitcodeAnalyzer.h" which is part of the LLVM_Bitcode module
> which depends on the LLVM_intrinsic_gen module which depends on "llvm/IR/Attributes.inc"
> which is a generated header not generated before libLLVMDebugInfo.
>
> - Michael Spencer
>
Fixed in r374827.
- Michael Spencer
>
>
> On Fri, Oct 11, 2019 at 12:04 PM David Blaikie via llvm-commits <
> llvm-commits at lists.llvm.org> wrote:
>
>> Author: dblaikie
>> Date: Fri Oct 11 12:06:35 2019
>> New Revision: 374582
>>
>> URL: http://llvm.org/viewvc/llvm-project?rev=374582&view=rev
>> Log:
>> llvm-dwarfdump: Add verbose printing for debug_loclists
>>
>> Modified:
>> llvm/trunk/include/llvm/DebugInfo/DWARF/DWARFDebugLoc.h
>> llvm/trunk/lib/DebugInfo/DWARF/DWARFContext.cpp
>> llvm/trunk/lib/DebugInfo/DWARF/DWARFDebugLoc.cpp
>> llvm/trunk/lib/DebugInfo/DWARF/DWARFDie.cpp
>> llvm/trunk/test/CodeGen/X86/debug-loclists.ll
>> llvm/trunk/test/DebugInfo/X86/dwarfdump-debug-loclists.test
>> llvm/trunk/test/DebugInfo/X86/fission-ranges.ll
>>
>> llvm/trunk/test/tools/llvm-dwarfdump/X86/debug_loclists_startx_length.s
>>
>> Modified: llvm/trunk/include/llvm/DebugInfo/DWARF/DWARFDebugLoc.h
>> URL:
>> http://llvm.org/viewvc/llvm-project/llvm/trunk/include/llvm/DebugInfo/DWARF/DWARFDebugLoc.h?rev=374582&r1=374581&r2=374582&view=diff
>>
>> ==============================================================================
>> --- llvm/trunk/include/llvm/DebugInfo/DWARF/DWARFDebugLoc.h (original)
>> +++ llvm/trunk/include/llvm/DebugInfo/DWARF/DWARFDebugLoc.h Fri Oct 11
>> 12:06:35 2019
>> @@ -11,6 +11,7 @@
>>
>> #include "llvm/ADT/Optional.h"
>> #include "llvm/ADT/SmallVector.h"
>> +#include "llvm/DebugInfo/DIContext.h"
>> #include "llvm/DebugInfo/DWARF/DWARFDataExtractor.h"
>> #include "llvm/DebugInfo/DWARF/DWARFRelocMap.h"
>> #include <cstdint>
>> @@ -42,6 +43,7 @@ public:
>> /// Dump this list on OS.
>> void dump(raw_ostream &OS, uint64_t BaseAddress, bool IsLittleEndian,
>> unsigned AddressSize, const MCRegisterInfo *MRI, DWARFUnit
>> *U,
>> + DIDumpOptions DumpOpts,
>> unsigned Indent) const;
>> };
>>
>> @@ -58,7 +60,7 @@ private:
>>
>> public:
>> /// Print the location lists found within the debug_loc section.
>> - void dump(raw_ostream &OS, const MCRegisterInfo *RegInfo,
>> + void dump(raw_ostream &OS, const MCRegisterInfo *RegInfo,
>> DIDumpOptions DumpOpts,
>> Optional<uint64_t> Offset) const;
>>
>> /// Parse the debug_loc section accessible via the 'data' parameter
>> using the
>> @@ -76,9 +78,13 @@ class DWARFDebugLoclists {
>> public:
>> struct Entry {
>> uint8_t Kind;
>> + uint64_t Offset;
>> uint64_t Value0;
>> uint64_t Value1;
>> SmallVector<uint8_t, 4> Loc;
>> + void dump(raw_ostream &OS, uint64_t &BaseAddr, bool IsLittleEndian,
>> + unsigned AddressSize, const MCRegisterInfo *MRI, DWARFUnit
>> *U,
>> + DIDumpOptions DumpOpts, unsigned Indent, size_t
>> MaxEncodingStringLength) const;
>> };
>>
>> struct LocationList {
>> @@ -86,7 +92,7 @@ public:
>> SmallVector<Entry, 2> Entries;
>> void dump(raw_ostream &OS, uint64_t BaseAddr, bool IsLittleEndian,
>> unsigned AddressSize, const MCRegisterInfo *RegInfo,
>> - DWARFUnit *U, unsigned Indent) const;
>> + DWARFUnit *U, DIDumpOptions DumpOpts, unsigned Indent)
>> const;
>> };
>>
>> private:
>> @@ -101,7 +107,7 @@ private:
>> public:
>> void parse(DataExtractor data, uint64_t Offset, uint64_t EndOffset,
>> uint16_t Version);
>> void dump(raw_ostream &OS, uint64_t BaseAddr, const MCRegisterInfo
>> *RegInfo,
>> - Optional<uint64_t> Offset) const;
>> + DIDumpOptions DumpOpts, Optional<uint64_t> Offset) const;
>>
>> /// Return the location list at the given offset or nullptr.
>> LocationList const *getLocationListAtOffset(uint64_t Offset) const;
>>
>> Modified: llvm/trunk/lib/DebugInfo/DWARF/DWARFContext.cpp
>> URL:
>> http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/DebugInfo/DWARF/DWARFContext.cpp?rev=374582&r1=374581&r2=374582&view=diff
>>
>> ==============================================================================
>> --- llvm/trunk/lib/DebugInfo/DWARF/DWARFContext.cpp (original)
>> +++ llvm/trunk/lib/DebugInfo/DWARF/DWARFContext.cpp Fri Oct 11 12:06:35
>> 2019
>> @@ -305,7 +305,7 @@ static void dumpLoclistsSection(raw_ostr
>> DWARFDebugLoclists Loclists;
>> uint64_t EndOffset = Header.length() + Header.getHeaderOffset();
>> Loclists.parse(LocData, Offset, EndOffset, Header.getVersion());
>> - Loclists.dump(OS, 0, MRI, DumpOffset);
>> + Loclists.dump(OS, 0, MRI, DumpOpts, DumpOffset);
>> Offset = EndOffset;
>> }
>> }
>> @@ -382,7 +382,7 @@ void DWARFContext::dump(
>>
>> if (const auto *Off = shouldDump(Explicit, ".debug_loc",
>> DIDT_ID_DebugLoc,
>> DObj->getLocSection().Data)) {
>> - getDebugLoc()->dump(OS, getRegisterInfo(), *Off);
>> + getDebugLoc()->dump(OS, getRegisterInfo(), DumpOpts, *Off);
>> }
>> if (const auto *Off =
>> shouldDump(Explicit, ".debug_loclists", DIDT_ID_DebugLoclists,
>> @@ -394,7 +394,7 @@ void DWARFContext::dump(
>> if (const auto *Off =
>> shouldDump(ExplicitDWO, ".debug_loc.dwo", DIDT_ID_DebugLoc,
>> DObj->getLocDWOSection().Data)) {
>> - getDebugLocDWO()->dump(OS, 0, getRegisterInfo(), *Off);
>> + getDebugLocDWO()->dump(OS, 0, getRegisterInfo(), DumpOpts, *Off);
>> }
>>
>> if (const auto *Off = shouldDump(Explicit, ".debug_frame",
>> DIDT_ID_DebugFrame,
>>
>> Modified: llvm/trunk/lib/DebugInfo/DWARF/DWARFDebugLoc.cpp
>> URL:
>> http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/DebugInfo/DWARF/DWARFDebugLoc.cpp?rev=374582&r1=374581&r2=374582&view=diff
>>
>> ==============================================================================
>> --- llvm/trunk/lib/DebugInfo/DWARF/DWARFDebugLoc.cpp (original)
>> +++ llvm/trunk/lib/DebugInfo/DWARF/DWARFDebugLoc.cpp Fri Oct 11 12:06:35
>> 2019
>> @@ -9,6 +9,7 @@
>> #include "llvm/DebugInfo/DWARF/DWARFDebugLoc.h"
>> #include "llvm/ADT/StringRef.h"
>> #include "llvm/BinaryFormat/Dwarf.h"
>> +#include "llvm/Bitcode/BitcodeAnalyzer.h"
>> #include "llvm/DebugInfo/DWARF/DWARFContext.h"
>> #include "llvm/DebugInfo/DWARF/DWARFExpression.h"
>> #include "llvm/DebugInfo/DWARF/DWARFRelocMap.h"
>> @@ -39,6 +40,7 @@ void DWARFDebugLoc::LocationList::dump(r
>> bool IsLittleEndian,
>> unsigned AddressSize,
>> const MCRegisterInfo *MRI,
>> DWARFUnit *U,
>> + DIDumpOptions DumpOpts,
>> unsigned Indent) const {
>> for (const Entry &E : Entries) {
>> OS << '\n';
>> @@ -62,12 +64,12 @@ DWARFDebugLoc::getLocationListAtOffset(u
>> return nullptr;
>> }
>>
>> -void DWARFDebugLoc::dump(raw_ostream &OS, const MCRegisterInfo *MRI,
>> +void DWARFDebugLoc::dump(raw_ostream &OS, const MCRegisterInfo *MRI,
>> DIDumpOptions DumpOpts,
>> Optional<uint64_t> Offset) const {
>> auto DumpLocationList = [&](const LocationList &L) {
>> OS << format("0x%8.8" PRIx64 ": ", L.Offset);
>> - L.dump(OS, 0, IsLittleEndian, AddressSize, MRI, nullptr, 12);
>> - OS << "\n\n";
>> + L.dump(OS, 0, IsLittleEndian, AddressSize, MRI, nullptr, DumpOpts,
>> 12);
>> + OS << "\n";
>> };
>>
>> if (Offset) {
>> @@ -78,6 +80,8 @@ void DWARFDebugLoc::dump(raw_ostream &OS
>>
>> for (const LocationList &L : Locations) {
>> DumpLocationList(L);
>> + if (&L != &Locations.back())
>> + OS << '\n';
>> }
>> }
>>
>> @@ -146,7 +150,11 @@ DWARFDebugLoclists::parseOneLocationList
>> while (auto Kind = Data.getU8(C)) {
>> Entry E;
>> E.Kind = Kind;
>> + E.Offset = C.tell() - 1;
>> switch (Kind) {
>> + case dwarf::DW_LLE_base_addressx:
>> + E.Value0 = Data.getULEB128(C);
>> + break;
>> case dwarf::DW_LLE_startx_length:
>> E.Value0 = Data.getULEB128(C);
>> // Pre-DWARF 5 has different interpretation of the length field.
>> We have
>> @@ -173,7 +181,8 @@ DWARFDebugLoclists::parseOneLocationList
>> "LLE of kind %x not supported",
>> (int)Kind);
>> }
>>
>> - if (Kind != dwarf::DW_LLE_base_address) {
>> + if (Kind != dwarf::DW_LLE_base_address &&
>> + Kind != dwarf::DW_LLE_base_addressx) {
>> unsigned Bytes = Version >= 5 ? Data.getULEB128(C) :
>> Data.getU16(C);
>> // A single location description describing the location of the
>> object...
>> Data.getU8(C, E.Loc, Bytes);
>> @@ -183,6 +192,10 @@ DWARFDebugLoclists::parseOneLocationList
>> }
>> if (Error Err = C.takeError())
>> return std::move(Err);
>> + Entry E;
>> + E.Kind = dwarf::DW_LLE_end_of_list;
>> + E.Offset = C.tell() - 1;
>> + LL.Entries.push_back(E);
>> *Offset = C.tell();
>> return LL;
>> }
>> @@ -210,51 +223,106 @@ DWARFDebugLoclists::getLocationListAtOff
>> return nullptr;
>> }
>>
>> -void DWARFDebugLoclists::LocationList::dump(raw_ostream &OS, uint64_t
>> BaseAddr,
>> - bool IsLittleEndian,
>> - unsigned AddressSize,
>> - const MCRegisterInfo *MRI,
>> - DWARFUnit *U,
>> - unsigned Indent) const {
>> - for (const Entry &E : Entries) {
>> - switch (E.Kind) {
>> +void DWARFDebugLoclists::Entry::dump(raw_ostream &OS, uint64_t &BaseAddr,
>> + bool IsLittleEndian, unsigned
>> AddressSize,
>> + const MCRegisterInfo *MRI,
>> DWARFUnit *U,
>> + DIDumpOptions DumpOpts, unsigned
>> Indent,
>> + size_t MaxEncodingStringLength)
>> const {
>> + if (DumpOpts.Verbose) {
>> + OS << "\n";
>> + OS.indent(Indent);
>> + auto EncodingString = dwarf::LocListEncodingString(Kind);
>> + // Unsupported encodings should have been reported during parsing.
>> + assert(!EncodingString.empty() && "Unknown loclist entry encoding");
>> + OS << format("%s%*c", EncodingString.data(),
>> + MaxEncodingStringLength - EncodingString.size() + 1,
>> '(');
>> + switch (Kind) {
>> case dwarf::DW_LLE_startx_length:
>> - OS << '\n';
>> - OS.indent(Indent);
>> - OS << "Addr idx " << E.Value0 << " (w/ length " << E.Value1 << "):
>> ";
>> - break;
>> case dwarf::DW_LLE_start_length:
>> - OS << '\n';
>> - OS.indent(Indent);
>> - OS << format("[0x%*.*" PRIx64 ", 0x%*.*" PRIx64 "): ", AddressSize
>> * 2,
>> - AddressSize * 2, E.Value0, AddressSize * 2,
>> AddressSize * 2,
>> - E.Value0 + E.Value1);
>> - break;
>> case dwarf::DW_LLE_offset_pair:
>> - OS << '\n';
>> - OS.indent(Indent);
>> - OS << format("[0x%*.*" PRIx64 ", 0x%*.*" PRIx64 "): ", AddressSize
>> * 2,
>> - AddressSize * 2, BaseAddr + E.Value0, AddressSize * 2,
>> - AddressSize * 2, BaseAddr + E.Value1);
>> + OS << format("0x%*.*" PRIx64 ", 0x%*.*" PRIx64, AddressSize * 2,
>> + AddressSize * 2, Value0, AddressSize * 2, AddressSize *
>> 2,
>> + Value1);
>> break;
>> + case dwarf::DW_LLE_base_addressx:
>> case dwarf::DW_LLE_base_address:
>> - BaseAddr = E.Value0;
>> + OS << format("0x%*.*" PRIx64, AddressSize * 2, AddressSize * 2,
>> + Value0);
>> + break;
>> + case dwarf::DW_LLE_end_of_list:
>> break;
>> - default:
>> - llvm_unreachable("unreachable locations list kind");
>> }
>> -
>> - dumpExpression(OS, E.Loc, IsLittleEndian, AddressSize, MRI, U);
>> + OS << ')';
>> + }
>> + auto PrintPrefix = [&] {
>> + OS << "\n";
>> + OS.indent(Indent);
>> + if (DumpOpts.Verbose)
>> + OS << format("%*s", MaxEncodingStringLength, (const char *)"=> ");
>> + };
>> + switch (Kind) {
>> + case dwarf::DW_LLE_startx_length:
>> + PrintPrefix();
>> + OS << "Addr idx " << Value0 << " (w/ length " << Value1 << "): ";
>> + break;
>> + case dwarf::DW_LLE_start_length:
>> + PrintPrefix();
>> + DWARFAddressRange(Value0, Value0 + Value1)
>> + .dump(OS, AddressSize, DumpOpts);
>> + OS << ": ";
>> + break;
>> + case dwarf::DW_LLE_offset_pair:
>> + PrintPrefix();
>> + DWARFAddressRange(BaseAddr + Value0, BaseAddr + Value1)
>> + .dump(OS, AddressSize, DumpOpts);
>> + OS << ": ";
>> + break;
>> + case dwarf::DW_LLE_base_addressx:
>> + if (!DumpOpts.Verbose)
>> + return;
>> + break;
>> + case dwarf::DW_LLE_end_of_list:
>> + if (!DumpOpts.Verbose)
>> + return;
>> + break;
>> + case dwarf::DW_LLE_base_address:
>> + BaseAddr = Value0;
>> + if (!DumpOpts.Verbose)
>> + return;
>> + break;
>> + default:
>> + llvm_unreachable("unreachable locations list kind");
>> }
>> +
>> + dumpExpression(OS, Loc, IsLittleEndian, AddressSize, MRI, U);
>> +}
>> +void DWARFDebugLoclists::LocationList::dump(raw_ostream &OS, uint64_t
>> BaseAddr,
>> + bool IsLittleEndian,
>> + unsigned AddressSize,
>> + const MCRegisterInfo *MRI,
>> + DWARFUnit *U,
>> + DIDumpOptions DumpOpts,
>> + unsigned Indent) const {
>> + size_t MaxEncodingStringLength = 0;
>> + if (DumpOpts.Verbose)
>> + for (const auto &Entry : Entries)
>> + MaxEncodingStringLength =
>> + std::max(MaxEncodingStringLength,
>> + dwarf::LocListEncodingString(Entry.Kind).size());
>> +
>> + for (const Entry &E : Entries)
>> + E.dump(OS, BaseAddr, IsLittleEndian, AddressSize, MRI, U, DumpOpts,
>> Indent,
>> + MaxEncodingStringLength);
>> }
>>
>> void DWARFDebugLoclists::dump(raw_ostream &OS, uint64_t BaseAddr,
>> - const MCRegisterInfo *MRI,
>> + const MCRegisterInfo *MRI, DIDumpOptions
>> DumpOpts,
>> Optional<uint64_t> Offset) const {
>> auto DumpLocationList = [&](const LocationList &L) {
>> OS << format("0x%8.8" PRIx64 ": ", L.Offset);
>> - L.dump(OS, BaseAddr, IsLittleEndian, AddressSize, MRI, nullptr,
>> /*Indent=*/12);
>> - OS << "\n\n";
>> + L.dump(OS, BaseAddr, IsLittleEndian, AddressSize, MRI, nullptr,
>> DumpOpts,
>> + /*Indent=*/12);
>> + OS << "\n";
>> };
>>
>> if (Offset) {
>> @@ -265,5 +333,7 @@ void DWARFDebugLoclists::dump(raw_ostrea
>>
>> for (const LocationList &L : Locations) {
>> DumpLocationList(L);
>> + if (&L != &Locations.back())
>> + OS << '\n';
>> }
>> }
>>
>> Modified: llvm/trunk/lib/DebugInfo/DWARF/DWARFDie.cpp
>> URL:
>> http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/DebugInfo/DWARF/DWARFDie.cpp?rev=374582&r1=374581&r2=374582&view=diff
>>
>> ==============================================================================
>> --- llvm/trunk/lib/DebugInfo/DWARF/DWARFDie.cpp (original)
>> +++ llvm/trunk/lib/DebugInfo/DWARF/DWARFDie.cpp Fri Oct 11 12:06:35 2019
>> @@ -97,8 +97,10 @@ static void dumpLocation(raw_ostream &OS
>> uint64_t BaseAddr = 0;
>> if (Optional<object::SectionedAddress> BA = U->getBaseAddress())
>> BaseAddr = BA->Address;
>> + auto LLDumpOpts = DumpOpts;
>> + LLDumpOpts.Verbose = false;
>> ExpectedLL->dump(OS, BaseAddr, Ctx.isLittleEndian(),
>> Obj.getAddressSize(),
>> - MRI, U, Indent);
>> + MRI, U, LLDumpOpts, Indent);
>> } else {
>> OS << '\n';
>> OS.indent(Indent);
>>
>> Modified: llvm/trunk/test/CodeGen/X86/debug-loclists.ll
>> URL:
>> http://llvm.org/viewvc/llvm-project/llvm/trunk/test/CodeGen/X86/debug-loclists.ll?rev=374582&r1=374581&r2=374582&view=diff
>>
>> ==============================================================================
>> --- llvm/trunk/test/CodeGen/X86/debug-loclists.ll (original)
>> +++ llvm/trunk/test/CodeGen/X86/debug-loclists.ll Fri Oct 11 12:06:35 2019
>> @@ -13,8 +13,10 @@
>> ; CHECK: .debug_loclists contents:
>> ; CHECK-NEXT: 0x00000000: locations list header: length = 0x00000015,
>> version = 0x0005, addr_size = 0x08, seg_size = 0x00, offset_entry_count =
>> 0x00000000
>> ; CHECK-NEXT: 0x0000000c:
>> -; CHECK-NEXT: [0x0000000000000000, 0x0000000000000004): DW_OP_breg5
>> RDI+0
>> -; CHECK-NEXT: [0x0000000000000004, 0x0000000000000012): DW_OP_breg3
>> RBX+0
>> +; CHECK-NEXT: DW_LLE_offset_pair(0x0000000000000000, 0x0000000000000004)
>> +; CHECK-NEXT: => [0x0000000000000000,
>> 0x0000000000000004): DW_OP_breg5 RDI+0
>> +; CHECK-NEXT: DW_LLE_offset_pair(0x0000000000000004, 0x0000000000000012)
>> +; CHECK-NEXT: => [0x0000000000000004,
>> 0x0000000000000012): DW_OP_breg3 RBX+0
>>
>> ; There is no way to use llvm-dwarfdump atm (2018, october) to verify
>> the DW_LLE_* codes emited,
>> ; because dumper is not yet implements that. Use asm code to do this
>> check instead.
>>
>> Modified: llvm/trunk/test/DebugInfo/X86/dwarfdump-debug-loclists.test
>> URL:
>> http://llvm.org/viewvc/llvm-project/llvm/trunk/test/DebugInfo/X86/dwarfdump-debug-loclists.test?rev=374582&r1=374581&r2=374582&view=diff
>>
>> ==============================================================================
>> --- llvm/trunk/test/DebugInfo/X86/dwarfdump-debug-loclists.test (original)
>> +++ llvm/trunk/test/DebugInfo/X86/dwarfdump-debug-loclists.test Fri Oct
>> 11 12:06:35 2019
>> @@ -11,9 +11,14 @@
>> # CHECK: .debug_loclists contents:
>> # CHECK-NEXT: 0x00000000: locations list header: length = 0x0000002c,
>> version = 0x0005, addr_size = 0x08, seg_size = 0x00, offset_entry_count =
>> 0x00000000
>> # CHECK-NEXT: 0x0000000c:
>> -# CHECK-NEXT: [0x0000000000000000, 0x0000000000000010): DW_OP_breg5
>> RDI+0
>> -# CHECK-NEXT: [0x0000000000000530, 0x0000000000000540): DW_OP_breg6
>> RBP-8, DW_OP_deref
>> -# CHECK-NEXT: [0x0000000000000700, 0x0000000000000710): DW_OP_breg5
>> RDI+0
>> +# CHECK-NEXT: DW_LLE_offset_pair (0x0000000000000000,
>> 0x0000000000000010)
>> +# CHECK-NEXT: => [0x0000000000000000,
>> 0x0000000000000010): DW_OP_breg5 RDI+0
>> +# CHECK-NEXT: DW_LLE_base_address(0x0000000000000500)
>> +# CHECK-NEXT: DW_LLE_offset_pair (0x0000000000000030,
>> 0x0000000000000040)
>> +# CHECK-NEXT: => [0x0000000000000530,
>> 0x0000000000000540): DW_OP_breg6 RBP-8, DW_OP_deref
>> +# CHECK-NEXT: DW_LLE_start_length(0x0000000000000700,
>> 0x0000000000000010)
>> +# CHECK-NEXT: => [0x0000000000000700,
>> 0x0000000000000710): DW_OP_breg5 RDI+0
>> +# CHECK-NEXT: DW_LLE_end_of_list ()
>>
>> .section .debug_str,"MS", at progbits,1
>> .asciz "stub"
>>
>> Modified: llvm/trunk/test/DebugInfo/X86/fission-ranges.ll
>> URL:
>> http://llvm.org/viewvc/llvm-project/llvm/trunk/test/DebugInfo/X86/fission-ranges.ll?rev=374582&r1=374581&r2=374582&view=diff
>>
>> ==============================================================================
>> --- llvm/trunk/test/DebugInfo/X86/fission-ranges.ll (original)
>> +++ llvm/trunk/test/DebugInfo/X86/fission-ranges.ll Fri Oct 11 12:06:35
>> 2019
>> @@ -45,18 +45,31 @@
>> ; if they've changed due to a bugfix, change in register allocation, etc.
>>
>> ; CHECK: [[A]]:
>> -; CHECK-NEXT: Addr idx 2 (w/ length 15): DW_OP_consts +0,
>> DW_OP_stack_value
>> -; CHECK-NEXT: Addr idx 3 (w/ length 15): DW_OP_reg0 RAX
>> -; CHECK-NEXT: Addr idx 4 (w/ length 18): DW_OP_breg7 RSP-8
>> +; CHECK-NEXT: DW_LLE_startx_length(0x00000002, 0x0000000f)
>> +; CHECK-NEXT: => Addr idx 2 (w/ length 15):
>> DW_OP_consts +0, DW_OP_stack_value
>> +; CHECK-NEXT: DW_LLE_startx_length(0x00000003, 0x0000000f)
>> +; CHECK-NEXT: => Addr idx 3 (w/ length 15):
>> DW_OP_reg0 RAX
>> +; CHECK-NEXT: DW_LLE_startx_length(0x00000004, 0x00000012)
>> +; CHECK-NEXT: => Addr idx 4 (w/ length 18):
>> DW_OP_breg7 RSP-8
>> +; CHECK-NEXT: DW_LLE_end_of_list ()
>> ; CHECK: [[E]]:
>> -; CHECK-NEXT: Addr idx 5 (w/ length 9): DW_OP_reg0 RAX
>> -; CHECK-NEXT: Addr idx 6 (w/ length 98): DW_OP_breg7 RSP-44
>> +; CHECK-NEXT: DW_LLE_startx_length(0x00000005, 0x00000009)
>> +; CHECK-NEXT: => Addr idx 5 (w/ length 9): DW_OP_reg0
>> RAX
>> +; CHECK-NEXT: DW_LLE_startx_length(0x00000006, 0x00000062)
>> +; CHECK-NEXT: => Addr idx 6 (w/ length 98):
>> DW_OP_breg7 RSP-44
>> +; CHECK-NEXT: DW_LLE_end_of_list ()
>> ; CHECK: [[B]]:
>> -; CHECK-NEXT: Addr idx 7 (w/ length 15): DW_OP_reg0 RAX
>> -; CHECK-NEXT: Addr idx 8 (w/ length 66): DW_OP_breg7 RSP-32
>> +; CHECK-NEXT: DW_LLE_startx_length(0x00000007, 0x0000000f)
>> +; CHECK-NEXT: => Addr idx 7 (w/ length 15):
>> DW_OP_reg0 RAX
>> +; CHECK-NEXT: DW_LLE_startx_length(0x00000008, 0x00000042)
>> +; CHECK-NEXT: => Addr idx 8 (w/ length 66):
>> DW_OP_breg7 RSP-32
>> +; CHECK-NEXT: DW_LLE_end_of_list ()
>> ; CHECK: [[D]]:
>> -; CHECK-NEXT: Addr idx 9 (w/ length 15): DW_OP_reg0 RAX
>> -; CHECK-NEXT: Addr idx 10 (w/ length 42): DW_OP_breg7 RSP-20
>> +; CHECK-NEXT: DW_LLE_startx_length(0x00000009, 0x0000000f)
>> +; CHECK-NEXT: => Addr idx 9 (w/ length 15):
>> DW_OP_reg0 RAX
>> +; CHECK-NEXT: DW_LLE_startx_length(0x0000000a, 0x0000002a)
>> +; CHECK-NEXT: => Addr idx 10 (w/ length 42):
>> DW_OP_breg7 RSP-20
>> +; CHECK-NEXT: DW_LLE_end_of_list ()
>>
>> ; Make sure we don't produce any relocations in any .dwo section (though
>> in particular, debug_info.dwo)
>> ; HDR-NOT: .rela.{{.*}}.dwo
>>
>> Modified:
>> llvm/trunk/test/tools/llvm-dwarfdump/X86/debug_loclists_startx_length.s
>> URL:
>> http://llvm.org/viewvc/llvm-project/llvm/trunk/test/tools/llvm-dwarfdump/X86/debug_loclists_startx_length.s?rev=374582&r1=374581&r2=374582&view=diff
>>
>> ==============================================================================
>> ---
>> llvm/trunk/test/tools/llvm-dwarfdump/X86/debug_loclists_startx_length.s
>> (original)
>> +++
>> llvm/trunk/test/tools/llvm-dwarfdump/X86/debug_loclists_startx_length.s Fri
>> Oct 11 12:06:35 2019
>> @@ -8,7 +8,9 @@
>> # CHECK: .debug_loclists contents:
>> # CHECK-NEXT: 0x00000000: locations list header: length = 0x0000000e,
>> version = 0x0005, addr_size = 0x08, seg_size = 0x00, offset_entry_count =
>> 0x00000000
>> # CHECK-NEXT: 0x0000000c:
>> -# CHECK-NEXT: Addr idx 1 (w/ length 16): DW_OP_reg5 RDI
>> +# CHECK-NEXT: DW_LLE_startx_length(0x0000000000000001,
>> 0x0000000000000010)
>> +# CHECK-NEXT: => Addr idx 1 (w/ length
>> 16): DW_OP_reg5 RDI
>> +# CHECK-NEXT: DW_LLE_end_of_list ()
>>
>> .section .debug_loclists,"", at progbits
>> .long .Ldebug_loclist_table_end0-.Ldebug_loclist_table_start0
>>
>>
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>> llvm-commits at lists.llvm.org
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>>
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