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[WebAssembly] Added R_WASM_FUNCTION_OFFSET_I64 for use with DWARF DW_AT_low_pc 

Needed for wasm64, see discussion in https://reviews.llvm.org/D91203

Differential Revision: https://reviews.llvm.org/D91395
This commit is contained in:
Wouter van Oortmerssen 2020-11-12 15:05:05 -08:00
parent e11195d0a9
commit 16f02431dc
12 changed files with 330 additions and 28 deletions
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2
lld/wasm/InputChunks.cpp
View File

@ -97,6 +97,7 @@ void InputChunk::verifyRelocTargets() const {
break;
case R_WASM_TABLE_INDEX_I64:
case R_WASM_MEMORY_ADDR_I64:
case R_WASM_FUNCTION_OFFSET_I64:
existingValue = read64le(loc);
break;
default:
@ -176,6 +177,7 @@ void InputChunk::writeTo(uint8_t *buf) const {
break;
case R_WASM_TABLE_INDEX_I64:
case R_WASM_MEMORY_ADDR_I64:
case R_WASM_FUNCTION_OFFSET_I64:
write64le(loc, value);
break;
default:

7
lld/wasm/InputFiles.cpp
View File

@ -124,6 +124,7 @@ uint64_t ObjFile::calcNewAddend(const WasmRelocation &reloc) const {
case R_WASM_MEMORY_ADDR_I32:
case R_WASM_MEMORY_ADDR_I64:
case R_WASM_FUNCTION_OFFSET_I32:
case R_WASM_FUNCTION_OFFSET_I64:
return reloc.Addend;
case R_WASM_SECTION_OFFSET_I32:
return getSectionSymbol(reloc.Index)->section->outputOffset + reloc.Addend;
@ -171,7 +172,8 @@ uint64_t ObjFile::calcExpectedValue(const WasmRelocation &reloc) const {
else
llvm_unreachable("unknown init expr opcode");
}
case R_WASM_FUNCTION_OFFSET_I32: {
case R_WASM_FUNCTION_OFFSET_I32:
case R_WASM_FUNCTION_OFFSET_I64: {
const WasmSymbol &sym = wasmObj->syms()[reloc.Index];
InputFunction *f =
functions[sym.Info.ElementIndex - wasmObj->getNumImportedFunctions()];
@ -258,7 +260,8 @@ uint64_t ObjFile::calcNewValue(const WasmRelocation &reloc) const {
return sym->getGOTIndex();
case R_WASM_EVENT_INDEX_LEB:
return getEventSymbol(reloc.Index)->getEventIndex();
case R_WASM_FUNCTION_OFFSET_I32: {
case R_WASM_FUNCTION_OFFSET_I32:
case R_WASM_FUNCTION_OFFSET_I64: {
auto *f = cast<DefinedFunction>(sym);
return f->function->outputOffset +
(f->function->getFunctionCodeOffset() + reloc.Addend);

1
llvm/include/llvm/BinaryFormat/WasmRelocs.def
View File

@ -24,3 +24,4 @@ WASM_RELOC(R_WASM_TABLE_INDEX_SLEB64, 18)
WASM_RELOC(R_WASM_TABLE_INDEX_I64, 19)
WASM_RELOC(R_WASM_TABLE_NUMBER_LEB, 20)
WASM_RELOC(R_WASM_MEMORY_ADDR_TLS_SLEB, 21)
WASM_RELOC(R_WASM_FUNCTION_OFFSET_I64, 22)

1
llvm/lib/BinaryFormat/Wasm.cpp
View File

@ -50,6 +50,7 @@ bool llvm::wasm::relocTypeHasAddend(uint32_t Type) {
case R_WASM_MEMORY_ADDR_I64:
case R_WASM_MEMORY_ADDR_TLS_SLEB:
case R_WASM_FUNCTION_OFFSET_I32:
case R_WASM_FUNCTION_OFFSET_I64:
case R_WASM_SECTION_OFFSET_I32:
return true;
default:

3
llvm/lib/MC/WasmObjectWriter.cpp
View File

@ -478,6 +478,7 @@ void WasmObjectWriter::recordRelocation(MCAssembler &Asm,
// Currently only supported for for metadata sections.
// See: test/MC/WebAssembly/blockaddress.ll
if (Type == wasm::R_WASM_FUNCTION_OFFSET_I32 ||
Type == wasm::R_WASM_FUNCTION_OFFSET_I64 ||
Type == wasm::R_WASM_SECTION_OFFSET_I32) {
if (!FixupSection.getKind().isMetadata())
report_fatal_error("relocations for function or section offsets are "
@ -564,6 +565,7 @@ WasmObjectWriter::getProvisionalValue(const WasmRelocationEntry &RelEntry,
assert(WasmIndices.count(RelEntry.Symbol) > 0 && "symbol not found in wasm index space");
return WasmIndices[RelEntry.Symbol];
case wasm::R_WASM_FUNCTION_OFFSET_I32:
case wasm::R_WASM_FUNCTION_OFFSET_I64:
case wasm::R_WASM_SECTION_OFFSET_I32: {
const auto &Section =
static_cast<const MCSectionWasm &>(RelEntry.Symbol->getSection());
@ -680,6 +682,7 @@ void WasmObjectWriter::applyRelocations(
break;
case wasm::R_WASM_TABLE_INDEX_I64:
case wasm::R_WASM_MEMORY_ADDR_I64:
case wasm::R_WASM_FUNCTION_OFFSET_I64:
patchI64(Stream, Value, Offset);
break;
case wasm::R_WASM_TABLE_INDEX_SLEB:

2
llvm/lib/Object/RelocationResolver.cpp
View File

@ -566,6 +566,7 @@ static bool supportsWasm64(uint64_t Type) {
case wasm::R_WASM_MEMORY_ADDR_I64:
case wasm::R_WASM_TABLE_INDEX_SLEB64:
case wasm::R_WASM_TABLE_INDEX_I64:
case wasm::R_WASM_FUNCTION_OFFSET_I64:
return true;
default:
return supportsWasm32(Type);
@ -601,6 +602,7 @@ static uint64_t resolveWasm64(RelocationRef R, uint64_t S, uint64_t A) {
case wasm::R_WASM_MEMORY_ADDR_I64:
case wasm::R_WASM_TABLE_INDEX_SLEB64:
case wasm::R_WASM_TABLE_INDEX_I64:
case wasm::R_WASM_FUNCTION_OFFSET_I64:
// For wasm section, its offset at 0 -- ignoring Value
return A;
default:

9
llvm/lib/Object/WasmObjectFile.cpp
View File

@ -876,6 +876,12 @@ Error WasmObjectFile::parseRelocSection(StringRef Name, ReadContext &Ctx) {
object_error::parse_failed);
Reloc.Addend = readVarint32(Ctx);
break;
case wasm::R_WASM_FUNCTION_OFFSET_I64:
if (!isValidFunctionSymbol(Reloc.Index))
return make_error<GenericBinaryError>("Bad relocation function index",
object_error::parse_failed);
Reloc.Addend = readVarint64(Ctx);
break;
case wasm::R_WASM_SECTION_OFFSET_I32:
if (!isValidSectionSymbol(Reloc.Index))
return make_error<GenericBinaryError>("Bad relocation section index",
@ -903,7 +909,8 @@ Error WasmObjectFile::parseRelocSection(StringRef Name, ReadContext &Ctx) {
Reloc.Type == wasm::R_WASM_GLOBAL_INDEX_I32)
Size = 4;
if (Reloc.Type == wasm::R_WASM_TABLE_INDEX_I64 ||
Reloc.Type == wasm::R_WASM_MEMORY_ADDR_I64)
Reloc.Type == wasm::R_WASM_MEMORY_ADDR_I64 ||
Reloc.Type == wasm::R_WASM_FUNCTION_OFFSET_I64)
Size = 8;
if (Reloc.Offset + Size > EndOffset)
return make_error<GenericBinaryError>("Bad relocation offset",

1
llvm/lib/ObjectYAML/WasmEmitter.cpp
View File

@ -547,6 +547,7 @@ void WasmWriter::writeRelocSection(raw_ostream &OS, WasmYAML::Section &Sec,
case wasm::R_WASM_MEMORY_ADDR_I32:
case wasm::R_WASM_MEMORY_ADDR_I64:
case wasm::R_WASM_FUNCTION_OFFSET_I32:
case wasm::R_WASM_FUNCTION_OFFSET_I64:
case wasm::R_WASM_SECTION_OFFSET_I32:
encodeULEB128(Reloc.Addend, OS);
}

4
llvm/lib/Target/WebAssembly/MCTargetDesc/WebAssemblyMCAsmInfo.cpp
View File

@ -23,9 +23,7 @@ WebAssemblyMCAsmInfo::~WebAssemblyMCAsmInfo() = default; // anchor.
WebAssemblyMCAsmInfo::WebAssemblyMCAsmInfo(const Triple &T,
const MCTargetOptions &Options) {
CalleeSaveStackSlotSize = T.isArch64Bit() ? 8 : 4;
// So far this is used for DWARF DW_AT_low_pc which is always 32-bit in Wasm.
CodePointerSize = 4;
CodePointerSize = CalleeSaveStackSlotSize = T.isArch64Bit() ? 8 : 4;
// TODO: What should MaxInstLength be?

2
llvm/lib/Target/WebAssembly/MCTargetDesc/WebAssemblyWasmObjectWriter.cpp
View File

@ -131,7 +131,7 @@ unsigned WebAssemblyWasmObjectWriter::getRelocType(const MCValue &Target,
if (auto Section = static_cast<const MCSectionWasm *>(
getFixupSection(Fixup.getValue()))) {
if (Section->getKind().isText())
llvm_unreachable("unimplemented R_WASM_FUNCTION_OFFSET_I64");
return wasm::R_WASM_FUNCTION_OFFSET_I64;
else if (!Section->isWasmData())
llvm_unreachable("unimplemented R_WASM_SECTION_OFFSET_I64");
}

289
llvm/test/MC/WebAssembly/debug-info64.ll Normal file
View File

@ -0,0 +1,289 @@
; RUN: llc -filetype=obj %s -o - | llvm-readobj -r -S --symbols - | FileCheck %s
; CHECK: Format: WASM
; CHECK-NEXT: Arch: wasm64
; CHECK-NEXT: AddressSize: 64bit
; CHECK-NEXT: Sections [
; CHECK-NEXT: Section {
; CHECK-NEXT: Type: TYPE (0x1)
; CHECK-NEXT: Size: 4
; CHECK-NEXT: Offset: 8
; CHECK-NEXT: }
; CHECK-NEXT: Section {
; CHECK-NEXT: Type: IMPORT (0x2)
; CHECK-NEXT: Size: 81
; CHECK-NEXT: Offset: 18
; CHECK-NEXT: }
; CHECK-NEXT: Section {
; CHECK-NEXT: Type: FUNCTION (0x3)
; CHECK-NEXT: Size: 2
; CHECK-NEXT: Offset: 105
; CHECK-NEXT: }
; CHECK-NEXT: Section {
; CHECK-NEXT: Type: ELEM (0x9)
; CHECK-NEXT: Size: 7
; CHECK-NEXT: Offset: 113
; CHECK-NEXT: }
; CHECK-NEXT: Section {
; CHECK-NEXT: Type: DATACOUNT (0xC)
; CHECK-NEXT: Size: 1
; CHECK-NEXT: Offset: 126
; CHECK-NEXT: }
; CHECK-NEXT: Section {
; CHECK-NEXT: Type: CODE (0xA)
; CHECK-NEXT: Size: 4
; CHECK-NEXT: Offset: 133
; CHECK-NEXT: }
; CHECK-NEXT: Section {
; CHECK-NEXT: Type: DATA (0xB)
; CHECK-NEXT: Size: 27
; CHECK-NEXT: Offset: 143
; CHECK-NEXT: Segments [
; CHECK-NEXT: Segment {
; CHECK-NEXT: Name: .data.foo
; CHECK-NEXT: Size: 8
; CHECK-NEXT: Offset: 0
; CHECK-NEXT: }
; CHECK-NEXT: Segment {
; CHECK-NEXT: Name: .data.ptr2
; CHECK-NEXT: Size: 8
; CHECK-NEXT: Offset: 8
; CHECK-NEXT: }
; CHECK-NEXT: ]
; CHECK-NEXT: }
; CHECK-NEXT: Section {
; CHECK-NEXT: Type: CUSTOM (0x0)
; CHECK-NEXT: Size: 86
; CHECK-NEXT: Offset: 176
; CHECK-NEXT: Name: .debug_abbrev
; CHECK-NEXT: }
; CHECK-NEXT: Section {
; CHECK-NEXT: Type: CUSTOM (0x0)
; CHECK-NEXT: Size: 130
; CHECK-NEXT: Offset: 282
; CHECK-NEXT: Name: .debug_info
; CHECK-NEXT: }
; CHECK-NEXT: Section {
; CHECK-NEXT: Type: CUSTOM (0x0)
; CHECK-NEXT: Size: 121
; CHECK-NEXT: Offset: 430
; CHECK-NEXT: Name: .debug_str
; CHECK-NEXT: }
; CHECK-NEXT: Section {
; CHECK-NEXT: Type: CUSTOM (0x0)
; CHECK-NEXT: Size: 42
; CHECK-NEXT: Offset: 568
; CHECK-NEXT: Name: .debug_pubnames
; CHECK-NEXT: }
; CHECK-NEXT: Section {
; CHECK-NEXT: Type: CUSTOM (0x0)
; CHECK-NEXT: Size: 26
; CHECK-NEXT: Offset: 632
; CHECK-NEXT: Name: .debug_pubtypes
; CHECK-NEXT: }
; CHECK-NEXT: Section {
; CHECK-NEXT: Type: CUSTOM (0x0)
; CHECK-NEXT: Size: 61
; CHECK-NEXT: Offset: 680
; CHECK-NEXT: Name: .debug_line
; CHECK-NEXT: }
; CHECK-NEXT: Section {
; CHECK-NEXT: Type: CUSTOM (0x0)
; CHECK-NEXT: Size: 91
; CHECK-NEXT: Offset: 759
; CHECK-NEXT: Name: linking
; CHECK-NEXT: }
; CHECK-NEXT: Section {
; CHECK-NEXT: Type: CUSTOM (0x0)
; CHECK-NEXT: Size: 9
; CHECK-NEXT: Offset: 864
; CHECK-NEXT: Name: reloc.DATA
; CHECK-NEXT: }
; CHECK-NEXT: Section {
; CHECK-NEXT: Type: CUSTOM (0x0)
; CHECK-NEXT: Size: 61
; CHECK-NEXT: Offset: 890
; CHECK-NEXT: Name: reloc..debug_info
; CHECK-NEXT: }
; CHECK-NEXT: Section {
; CHECK-NEXT: Type: CUSTOM (0x0)
; CHECK-NEXT: Size: 6
; CHECK-NEXT: Offset: 975
; CHECK-NEXT: Name: reloc..debug_pubnames
; CHECK-NEXT: }
; CHECK-NEXT: Section {
; CHECK-NEXT: Type: CUSTOM (0x0)
; CHECK-NEXT: Size: 6
; CHECK-NEXT: Offset: 1009
; CHECK-NEXT: Name: reloc..debug_pubtypes
; CHECK-NEXT: }
; CHECK-NEXT: Section {
; CHECK-NEXT: Type: CUSTOM (0x0)
; CHECK-NEXT: Size: 6
; CHECK-NEXT: Offset: 1043
; CHECK-NEXT: Name: reloc..debug_line
; CHECK-NEXT: }
; CHECK-NEXT: Section {
; CHECK-NEXT: Type: CUSTOM (0x0)
; CHECK-NEXT: Size: 77
; CHECK-NEXT: Offset: 1073
; CHECK-NEXT: Name: producers
; CHECK-NEXT: }
; CHECK-NEXT: ]
; CHECK-NEXT: Relocations [
; CHECK-NEXT: Section (7) DATA {
; CHECK-NEXT: 0x6 R_WASM_MEMORY_ADDR_I64 myextern 0
; CHECK-NEXT: 0x13 R_WASM_TABLE_INDEX_I64 f2
; CHECK-NEXT: }
; CHECK-NEXT: Section (9) .debug_info {
; CHECK-NEXT: 0x6 R_WASM_SECTION_OFFSET_I32 .debug_abbrev 0
; CHECK-NEXT: 0xC R_WASM_SECTION_OFFSET_I32 .debug_str 0
; CHECK-NEXT: 0x12 R_WASM_SECTION_OFFSET_I32 .debug_str 55
; CHECK-NEXT: 0x16 R_WASM_SECTION_OFFSET_I32 .debug_line 0
; CHECK-NEXT: 0x1A R_WASM_SECTION_OFFSET_I32 .debug_str 62
; CHECK-NEXT: 0x1E R_WASM_FUNCTION_OFFSET_I64 f2 0
; CHECK-NEXT: 0x2B R_WASM_SECTION_OFFSET_I32 .debug_str 105
; CHECK-NEXT: 0x37 R_WASM_MEMORY_ADDR_I64 foo 0
; CHECK-NEXT: 0x45 R_WASM_SECTION_OFFSET_I32 .debug_str 109
; CHECK-NEXT: 0x4C R_WASM_SECTION_OFFSET_I32 .debug_str 113
; CHECK-NEXT: 0x58 R_WASM_MEMORY_ADDR_I64 ptr2 0
; CHECK-NEXT: 0x67 R_WASM_FUNCTION_OFFSET_I64 f2 0
; CHECK-NEXT: 0x76 R_WASM_GLOBAL_INDEX_I32 __stack_pointer
; CHECK-NEXT: 0x7B R_WASM_SECTION_OFFSET_I32 .debug_str 118
; CHECK-NEXT: }
; CHECK-NEXT: Section (11) .debug_pubnames {
; CHECK-NEXT: 0x6 R_WASM_SECTION_OFFSET_I32 .debug_info 0
; CHECK-NEXT: }
; CHECK-NEXT: Section (12) .debug_pubtypes {
; CHECK-NEXT: 0x6 R_WASM_SECTION_OFFSET_I32 .debug_info 0
; CHECK-NEXT: }
; CHECK-NEXT: Section (13) .debug_line {
; CHECK-NEXT: 0x2B R_WASM_FUNCTION_OFFSET_I64 f2 0
; CHECK-NEXT: }
; CHECK-NEXT: ]
; CHECK-NEXT: Symbols [
; CHECK-NEXT: Symbol {
; CHECK-NEXT: Name: f2
; CHECK-NEXT: Type: FUNCTION (0x0)
; CHECK-NEXT: Flags [ (0x4)
; CHECK-NEXT: VISIBILITY_HIDDEN (0x4)
; CHECK-NEXT: ]
; CHECK-NEXT: ElementIndex: 0x0
; CHECK-NEXT: }
; CHECK-NEXT: Symbol {
; CHECK-NEXT: Name: foo
; CHECK-NEXT: Type: DATA (0x1)
; CHECK-NEXT: Flags [ (0x4)
; CHECK-NEXT: VISIBILITY_HIDDEN (0x4)
; CHECK-NEXT: ]
; CHECK-NEXT: Offset: 0x0
; CHECK-NEXT: Segment: 0x0
; CHECK-NEXT: Size: 0x8
; CHECK-NEXT: }
; CHECK-NEXT: Symbol {
; CHECK-NEXT: Name: myextern
; CHECK-NEXT: Type: DATA (0x1)
; CHECK-NEXT: Flags [ (0x10)
; CHECK-NEXT: UNDEFINED (0x10)
; CHECK-NEXT: ]
; CHECK-NEXT: }
; CHECK-NEXT: Symbol {
; CHECK-NEXT: Name: ptr2
; CHECK-NEXT: Type: DATA (0x1)
; CHECK-NEXT: Flags [ (0x4)
; CHECK-NEXT: VISIBILITY_HIDDEN (0x4)
; CHECK-NEXT: ]
; CHECK-NEXT: Offset: 0x0
; CHECK-NEXT: Segment: 0x1
; CHECK-NEXT: Size: 0x8
; CHECK-NEXT: }
; CHECK-NEXT: Symbol {
; CHECK-NEXT: Name: .debug_abbrev
; CHECK-NEXT: Type: SECTION (0x3)
; CHECK-NEXT: Flags [ (0x2)
; CHECK-NEXT: BINDING_LOCAL (0x2)
; CHECK-NEXT: ]
; CHECK-NEXT: ElementIndex: 0x7
; CHECK-NEXT: }
; CHECK-NEXT: Symbol {
; CHECK-NEXT: Name: .debug_info
; CHECK-NEXT: Type: SECTION (0x3)
; CHECK-NEXT: Flags [ (0x2)
; CHECK-NEXT: BINDING_LOCAL (0x2)
; CHECK-NEXT: ]
; CHECK-NEXT: ElementIndex: 0x8
; CHECK-NEXT: }
; CHECK-NEXT: Symbol {
; CHECK-NEXT: Name: __stack_pointer
; CHECK-NEXT: Type: GLOBAL (0x2)
; CHECK-NEXT: Flags [ (0x10)
; CHECK-NEXT: UNDEFINED (0x10)
; CHECK-NEXT: ]
; CHECK-NEXT: ImportName: __stack_pointer
; CHECK-NEXT: ImportModule: env
; CHECK-NEXT: ElementIndex: 0x0
; CHECK-NEXT: }
; CHECK-NEXT: Symbol {
; CHECK-NEXT: Name: .debug_str
; CHECK-NEXT: Type: SECTION (0x3)
; CHECK-NEXT: Flags [ (0x2)
; CHECK-NEXT: BINDING_LOCAL (0x2)
; CHECK-NEXT: ]
; CHECK-NEXT: ElementIndex: 0x9
; CHECK-NEXT: }
; CHECK-NEXT: Symbol {
; CHECK-NEXT: Name: .debug_line
; CHECK-NEXT: Type: SECTION (0x3)
; CHECK-NEXT: Flags [ (0x2)
; CHECK-NEXT: BINDING_LOCAL (0x2)
; CHECK-NEXT: ]
; CHECK-NEXT: ElementIndex: 0xC
; CHECK-NEXT: }
; CHECK-NEXT: ]
; generated from the following C code using: clang --target=wasm64 -g -O0 -S -emit-llvm test.c
; extern int myextern;
; void f2(void) { return; }
;
; int* foo = &myextern;
; void (*ptr2)(void) = f2;
target triple = "wasm64-unknown-unknown"
source_filename = "test.c"
@myextern = external global i32, align 4
@foo = hidden global i32* @myextern, align 4, !dbg !0
@ptr2 = hidden global void ()* @f2, align 4, !dbg !6
; Function Attrs: noinline nounwind optnone
define hidden void @f2() #0 !dbg !17 {
entry:
ret void, !dbg !18
}
attributes #0 = { noinline nounwind optnone "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "less-precise-fpmad"="false" "frame-pointer"="none" "no-infs-fp-math"="false" "no-jump-tables"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="generic" "unsafe-fp-math"="false" "use-soft-float"="false" }
!llvm.dbg.cu = !{!2}
!llvm.module.flags = !{!13, !14, !15}
!llvm.ident = !{!16}
!0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression())
!1 = distinct !DIGlobalVariable(name: "foo", scope: !2, file: !3, line: 4, type: !11, isLocal: false, isDefinition: true)
!2 = distinct !DICompileUnit(language: DW_LANG_C99, file: !3, producer: "clang version 7.0.0 (trunk 332303) (llvm/trunk 332406)", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !4, globals: !5)
!3 = !DIFile(filename: "test.c", directory: "/usr/local/google/home/sbc/dev/wasm/simple")
!4 = !{}
!5 = !{!0, !6}
!6 = !DIGlobalVariableExpression(var: !7, expr: !DIExpression())
!7 = distinct !DIGlobalVariable(name: "ptr2", scope: !2, file: !3, line: 5, type: !8, isLocal: false, isDefinition: true)
!8 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !9, size: 32)
!9 = !DISubroutineType(types: !10)
!10 = !{null}
!11 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !12, size: 32)
!12 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
!13 = !{i32 2, !"Dwarf Version", i32 4}
!14 = !{i32 2, !"Debug Info Version", i32 3}
!15 = !{i32 1, !"wchar_size", i32 4}
!16 = !{!"clang version 7.0.0 (trunk 332303) (llvm/trunk 332406)"}
!17 = distinct !DISubprogram(name: "f2", scope: !3, file: !3, line: 2, type: !9, isLocal: false, isDefinition: true, scopeLine: 2, flags: DIFlagPrototyped, isOptimized: false, unit: !2, retainedNodes: !4)
!18 = !DILocation(line: 2, column: 17, scope: !17)

37
llvm/test/MC/WebAssembly/dwarfdump64.ll
View File

@ -2,7 +2,7 @@
; RUN: llc -filetype=obj %s -o - | llvm-dwarfdump --show-form - | FileCheck %s
; CHECK: .debug_info contents:
; CHECK-NEXT: 0x00000000: Compile Unit: length = 0x0000006e, format = DWARF32, version = 0x0004, abbr_offset = 0x0000, addr_size = 0x04 (next unit at 0x00000072)
; CHECK-NEXT: 0x00000000: Compile Unit: length = 0x0000007e, format = DWARF32, version = 0x0004, abbr_offset = 0x0000, addr_size = 0x08 (next unit at 0x00000082)
; CHECK: 0x0000000b: DW_TAG_compile_unit
; CHECK-NEXT: DW_AT_producer [DW_FORM_strp] ("clang version 6.0.0 (trunk 315924) (llvm/trunk 315960)")
@ -11,46 +11,41 @@
; CHECK-NEXT: DW_AT_stmt_list [DW_FORM_sec_offset] (0x00000000)
; CHECK-NEXT: DW_AT_comp_dir [DW_FORM_strp] ("/usr/local/google/home/sbc/dev/wasm/simple")
; CHECK-NEXT: DW_AT_GNU_pubnames [DW_FORM_flag_present] (true)
; CHECK-NEXT: DW_AT_low_pc [DW_FORM_addr] (0x00000002)
; CHECK-NEXT: DW_AT_low_pc [DW_FORM_addr] (0x0000000000000002)
; CHECK-NEXT: DW_AT_high_pc [DW_FORM_data4] (0x00000002)
; CHECK: 0x00000026: DW_TAG_variable
; CHECK: 0x0000002a: DW_TAG_variable
; CHECK-NEXT: DW_AT_name [DW_FORM_strp] ("foo")
; CHECK-NEXT: DW_AT_type [DW_FORM_ref4] (0x00000037 "int*")
; CHECK-NEXT: DW_AT_type [DW_FORM_ref4] (0x0000003f "int*")
; CHECK-NEXT: DW_AT_external [DW_FORM_flag_present] (true)
; CHECK-NEXT: DW_AT_decl_file [DW_FORM_data1] ("/usr/local/google/home/sbc/dev/wasm/simple{{[/\\]}}test.c")
; CHECK-NEXT: DW_AT_decl_line [DW_FORM_data1] (4)
; CHECK-NEXT: DW_AT_location [DW_FORM_exprloc] (DW_OP_addr 0x0)
; CHECK: 0x00000037: DW_TAG_pointer_type
; CHECK-NEXT: DW_AT_type [DW_FORM_ref4] (0x0000003c "int")
; CHECK: 0x0000003f: DW_TAG_pointer_type
; CHECK-NEXT: DW_AT_type [DW_FORM_ref4] (0x00000044 "int")
; CHECK: 0x0000003c: DW_TAG_base_type
; CHECK: 0x00000044: DW_TAG_base_type
; CHECK-NEXT: DW_AT_name [DW_FORM_strp] ("int")
; CHECK-NEXT: DW_AT_encoding [DW_FORM_data1] (DW_ATE_signed)
; CHECK-NEXT: DW_AT_byte_size [DW_FORM_data1] (0x04)
; CHECK: 0x00000043: DW_TAG_variable
; CHECK: 0x0000004b: DW_TAG_variable
; CHECK-NEXT: DW_AT_name [DW_FORM_strp] ("ptr2")
; CHECK-NEXT: DW_AT_type [DW_FORM_ref4] (0x00000054 "void()*")
; CHECK-NEXT: DW_AT_type [DW_FORM_ref4] (0x00000060 "void()*")
; CHECK-NEXT: DW_AT_external [DW_FORM_flag_present] (true)
; CHECK-NEXT: DW_AT_decl_file [DW_FORM_data1] ("/usr/local/google/home/sbc/dev/wasm/simple{{[/\\]}}test.c")
; CHECK-NEXT: DW_AT_decl_line [DW_FORM_data1] (5)
; TODO: is this correct?
; CHECK-NEXT: DW_AT_location [DW_FORM_exprloc] (DW_OP_addr 0x8)
; CHECK: 0x00000054: DW_TAG_pointer_type
; CHECK-NEXT: DW_AT_type [DW_FORM_ref4] (0x00000059 "void()")
; CHECK: 0x00000060: DW_TAG_pointer_type
; CHECK-NEXT: DW_AT_type [DW_FORM_ref4] (0x00000065 "void()")
; CHECK: 0x00000059: DW_TAG_subroutine_type
; CHECK-NEXT: DW_AT_prototyped [DW_FORM_flag_present] (true)
; CHECK: 0x00000065: DW_TAG_subroutine_type
; CHECK-NEXT: DW_AT_prototyped [DW_FORM_flag_present] (true)
; CHECK: 0x0000005a: DW_TAG_subprogram
; CHECK-NEXT: DW_AT_low_pc [DW_FORM_addr] (0x00000002)
; CHECK: 0x00000066: DW_TAG_subprogram
; CHECK-NEXT: DW_AT_low_pc [DW_FORM_addr] (0x0000000000000002)
; CHECK-NEXT: DW_AT_high_pc [DW_FORM_data4] (0x00000002)
; CHECK-NEXT: DW_AT_frame_base [DW_FORM_exprloc] (DW_OP_WASM_location 0x3 0x0, DW_OP_stack_value)
; CHECK-NEXT: DW_AT_name [DW_FORM_strp] ("f2")
@ -59,7 +54,7 @@
; CHECK-NEXT: DW_AT_prototyped [DW_FORM_flag_present] (true)
; CHECK-NEXT: DW_AT_external [DW_FORM_flag_present] (true)
; CHECK: 0x00000071: NULL
; CHECK: 0x00000081: NULL
target triple = "wasm64-unknown-unknown"