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Add a DW_AT_high_pc for CUs that are a single address range. Update
all tests accordingly. Fixes PR13351. Patch by shinichiro hamaji! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160899 91177308-0d34-0410-b5e6-96231b3b80d8
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c16bf79303
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@ -127,7 +127,8 @@ DwarfDebug::DwarfDebug(AsmPrinter *A, Module *M)
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: Asm(A), MMI(Asm->MMI), FirstCU(0),
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AbbreviationsSet(InitAbbreviationsSetSize),
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SourceIdMap(DIEValueAllocator), StringPool(DIEValueAllocator),
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PrevLabel(NULL) {
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PrevLabel(NULL),
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HasNonTextSection(false) {
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NextStringPoolNumber = 0;
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DwarfInfoSectionSym = DwarfAbbrevSectionSym = 0;
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@ -561,9 +562,6 @@ CompileUnit *DwarfDebug::constructCompileUnit(const MDNode *N) {
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NewCU->addUInt(Die, dwarf::DW_AT_language, dwarf::DW_FORM_data2,
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DIUnit.getLanguage());
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NewCU->addString(Die, dwarf::DW_AT_name, FN);
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// 2.17.1 requires that we use DW_AT_low_pc for a single entry point
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// into an entity.
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NewCU->addUInt(Die, dwarf::DW_AT_low_pc, dwarf::DW_FORM_addr, 0);
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// DW_AT_stmt_list is a offset of line number information for this
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// compile unit in debug_line section.
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if (Asm->MAI->doesDwarfUseRelocationsAcrossSections())
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@ -787,12 +785,25 @@ void DwarfDebug::endModule() {
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FirstCU->addUInt(ISP, dwarf::DW_AT_inline, 0, dwarf::DW_INL_inlined);
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}
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// Emit DW_AT_containing_type attribute to connect types with their
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// vtable holding type.
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for (DenseMap<const MDNode *, CompileUnit *>::iterator CUI = CUMap.begin(),
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CUE = CUMap.end(); CUI != CUE; ++CUI) {
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// Emit DW_AT_containing_type attribute to connect types with their
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// vtable holding type.
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CompileUnit *TheCU = CUI->second;
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TheCU->constructContainingTypeDIEs();
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// Emit low_pc and high_pc for CU.
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DIE *Die = TheCU->getCUDie();
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if (HasNonTextSection) {
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// 2.17.1 requires that we use DW_AT_low_pc for a single entry point
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// into an entity.
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TheCU->addUInt(Die, dwarf::DW_AT_low_pc, dwarf::DW_FORM_addr, 0);
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} else {
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TheCU->addLabel(Die, dwarf::DW_AT_low_pc, dwarf::DW_FORM_addr,
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Asm->GetTempSymbol("text_begin"));
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TheCU->addLabel(Die, dwarf::DW_AT_high_pc, dwarf::DW_FORM_addr,
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Asm->GetTempSymbol("text_end"));
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}
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}
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// Standard sections final addresses.
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@ -852,6 +863,7 @@ void DwarfDebug::endModule() {
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E = CUMap.end(); I != E; ++I)
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delete I->second;
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FirstCU = NULL; // Reset for the next Module, if any.
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HasNonTextSection = false;
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}
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/// findAbstractVariable - Find abstract variable, if any, associated with Var.
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@ -1220,6 +1232,9 @@ void DwarfDebug::beginFunction(const MachineFunction *MF) {
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if (LScopes.empty()) return;
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identifyScopeMarkers();
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if (!Asm->getCurrentSection()->getKind().isText())
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HasNonTextSection = true;
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FunctionBeginSym = Asm->GetTempSymbol("func_begin",
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Asm->getFunctionNumber());
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// Assumes in correct section after the entry point.
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@ -307,6 +307,9 @@ class DwarfDebug {
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// table for the same directory as DW_at_comp_dir.
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StringRef CompilationDir;
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// True if the current module has non text section.
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bool HasNonTextSection;
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private:
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/// assignAbbrevNumber - Define a unique number for the abbreviation.
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@ -3,8 +3,8 @@
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; test that the DW_AT_specification is a back edge in the file.
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; CHECK: 0x0000003a: DW_TAG_subprogram [5] *
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; CHECK: 0x00000060: DW_AT_specification [DW_FORM_ref4] (cu + 0x003a => {0x0000003a})
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; CHECK: 0x00000042: DW_TAG_subprogram [5] *
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; CHECK: 0x00000068: DW_AT_specification [DW_FORM_ref4] (cu + 0x0042 => {0x00000042})
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@_ZZN3foo3barEvE1x = constant i32 0, align 4
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@ -3,10 +3,10 @@
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; Check that the friend tag is there and is followed by a DW_AT_friend that has a reference back.
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; CHECK: 0x00000032: DW_TAG_class_type [4]
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; CHECK: 0x00000077: DW_TAG_class_type [4]
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; CHECK: 0x000000a0: DW_TAG_friend [9]
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; CHECK: 0x000000a1: DW_AT_friend [DW_FORM_ref4] (cu + 0x0032 => {0x00000032})
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; CHECK: 0x0000003a: DW_TAG_class_type [4]
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; CHECK: 0x0000007f: DW_TAG_class_type [4]
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; CHECK: 0x000000a8: DW_TAG_friend [9]
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; CHECK: 0x000000a9: DW_AT_friend [DW_FORM_ref4] (cu + 0x003a => {0x0000003a})
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%class.A = type { i32 }
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@ -2,10 +2,10 @@
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; RUN: llvm-dwarfdump %t | FileCheck %s
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; Checks that we emit debug info for the block variable declare.
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; CHECK: 0x00000030: DW_TAG_subprogram [3]
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; CHECK: 0x0000005b: DW_TAG_variable [5]
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; CHECK: 0x0000005c: DW_AT_name [DW_FORM_strp] ( .debug_str[0x000000e6] = "block")
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; CHECK: 0x00000066: DW_AT_location [DW_FORM_data4] (0x00000023)
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; CHECK: 0x00000038: DW_TAG_subprogram [3]
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; CHECK: 0x00000063: DW_TAG_variable [5]
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; CHECK: 0x00000064: DW_AT_name [DW_FORM_strp] ( .debug_str[0x000000e6] = "block")
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; CHECK: 0x0000006e: DW_AT_location [DW_FORM_data4] (0x00000023)
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%struct.__block_descriptor = type { i64, i64 }
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%struct.__block_literal_generic = type { i8*, i32, i32, i8*, %struct.__block_descriptor* }
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@ -7,7 +7,7 @@
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; first check that we have a TAG_subprogram at a given offset and it has
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; AT_inline.
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; CHECK: 0x00000134: DW_TAG_subprogram [18]
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; CHECK: 0x0000013c: DW_TAG_subprogram [18]
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; CHECK-NEXT: DW_AT_MIPS_linkage_name
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; CHECK-NEXT: DW_AT_specification
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; CHECK-NEXT: DW_AT_inline
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@ -15,8 +15,8 @@
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; and then that a TAG_subprogram refers to it with AT_abstract_origin.
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; CHECK: 0x00000184: DW_TAG_subprogram [20]
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; CHECK-NEXT: DW_AT_abstract_origin [DW_FORM_ref4] (cu + 0x0134 => {0x00000134})
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; CHECK: 0x0000018c: DW_TAG_subprogram [20]
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; CHECK-NEXT: DW_AT_abstract_origin [DW_FORM_ref4] (cu + 0x013c => {0x0000013c})
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define i32 @_ZN17nsAutoRefCnt7ReleaseEv() {
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entry:
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@ -31,12 +31,12 @@
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!21 = metadata !{i32 786484, i32 0, null, metadata !"c", metadata !"c", metadata !"", metadata !4, i32 6, metadata !12, i32 0, i32 1, i32* @c} ; [ DW_TAG_variable ]
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; CHECK: DW_TAG_enumeration_type [3]
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; CHECK: DW_AT_type [DW_FORM_ref4] (cu + 0x0026 => {0x00000026})
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; CHECK: DW_AT_type [DW_FORM_ref4] (cu + 0x002e => {0x0000002e})
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; CHECK: DW_AT_enum_class [DW_FORM_flag] (0x01)
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; CHECK: DW_AT_name [DW_FORM_strp] ( .debug_str[{{.*}}] = "A")
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; CHECK: DW_TAG_enumeration_type [3] *
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; CHECK: DW_AT_type [DW_FORM_ref4] (cu + 0x0057 => {0x00000057})
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; CHECK: DW_AT_type [DW_FORM_ref4] (cu + 0x005f => {0x0000005f})
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; CHECK: DW_AT_enum_class [DW_FORM_flag] (0x01)
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; CHECK: DW_AT_name [DW_FORM_strp] ( .debug_str[{{.*}}] = "B")
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@ -1,10 +1,11 @@
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; RUN: llc -mtriple=x86_64-apple-darwin %s -o %t -filetype=obj
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; RUN: llvm-dwarfdump %t | FileCheck %s
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; Check that we use DW_AT_low_pc
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; Check that we use DW_AT_low_pc and DW_AT_high_pc
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; CHECK: DW_TAG_compile_unit [1]
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; CHECK: DW_AT_low_pc [DW_FORM_addr] (0x0000000000000000)
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; CHECK: DW_AT_high_pc [DW_FORM_addr] (0x0000000000000001)
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; CHECK: DW_TAG_subprogram [2]
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define i32 @_Z1qv() nounwind uwtable readnone ssp {
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test/DebugInfo/X86/non-text-cu.ll
Normal file
23
test/DebugInfo/X86/non-text-cu.ll
Normal file
@ -0,0 +1,23 @@
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; RUN: llc -mtriple=x86_64-redhat-linux-gnu %s -o %t -filetype=obj
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; RUN: llvm-dwarfdump %t | FileCheck %s
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; Check that we only use DW_AT_low_pc for CU which has non text sections
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; CHECK: DW_TAG_compile_unit [1]
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; CHECK: DW_AT_low_pc [DW_FORM_addr] (0x0000000000000000)
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; CHECK-NOT: DW_AT_high_pc [DW_FORM_addr]
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; CHECK: DW_TAG_subprogram [2]
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define void @in_data() nounwind section ".data" {
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ret void, !dbg !5
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}
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!llvm.dbg.sp = !{!0}
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!0 = metadata !{i32 589870, i32 0, metadata !1, metadata !"in_data", metadata !"in_data", metadata !"", metadata !1, i32 1, metadata !3, i1 false, i1 true, i32 0, i32 0, i32 0, i32 0, i1 false, void ()* @in_data} ; [ DW_TAG_subprogram ]
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!1 = metadata !{i32 589865, metadata !"in_data.c", metadata !"/home/i/test", metadata !2} ; [ DW_TAG_file_type ]
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!2 = metadata !{i32 589841, i32 0, i32 12, metadata !"in_data.c", metadata !"/home/i/test", metadata !"clang version 2.9 (tags/RELEASE_29/final)", i1 true, i1 false, metadata !"", i32 0} ; [ DW_TAG_compile_unit ]
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!3 = metadata !{i32 589845, metadata !1, metadata !"", metadata !1, i32 0, i64 0, i64 0, i32 0, i32 0, i32 0, metadata !4, i32 0, i32 0} ; [ DW_TAG_subroutine_type ]
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!4 = metadata !{null}
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!5 = metadata !{i32 1, i32 51, metadata !6, null}
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!6 = metadata !{i32 589835, metadata !0, i32 1, i32 50, metadata !1, i32 0} ; [ DW_TAG_lexical_block ]
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@ -1,9 +1,9 @@
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; RUN: llc -mtriple=x86_64-macosx %s -o %t -filetype=obj
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; RUN: llvm-dwarfdump %t | FileCheck %s
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; CHECK: 0x00000027: DW_TAG_structure_type
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; CHECK: 0x0000002c: DW_AT_declaration
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; CHECK: 0x0000002d: DW_AT_APPLE_runtime_class
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; CHECK: 0x0000002f: DW_TAG_structure_type
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; CHECK: 0x00000034: DW_AT_declaration
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; CHECK: 0x00000035: DW_AT_APPLE_runtime_class
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%0 = type opaque
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@ -3,8 +3,8 @@
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; test that the DW_AT_specification is a back edge in the file.
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; CHECK: 0x0000005c: DW_TAG_subprogram [5]
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; CHECK: 0x0000007c: DW_AT_specification [DW_FORM_ref4] (cu + 0x005c => {0x0000005c})
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; CHECK: 0x00000064: DW_TAG_subprogram [5]
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; CHECK: 0x00000084: DW_AT_specification [DW_FORM_ref4] (cu + 0x0064 => {0x00000064})
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%struct.foo = type { i8 }
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@ -16,7 +16,7 @@
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; Verify that we refer to 'yyyy' with a relocation.
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; LINUX: .long .Lstring3 # DW_AT_name
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; LINUX-NEXT: .long 39 # DW_AT_type
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; LINUX-NEXT: .long 47 # DW_AT_type
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; LINUX-NEXT: .byte 1 # DW_AT_external
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; LINUX-NEXT: .byte 1 # DW_AT_decl_file
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; LINUX-NEXT: .byte 1 # DW_AT_decl_line
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@ -27,7 +27,7 @@
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; Verify that we refer to 'yyyy' without a relocation.
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; DARWIN: Lset5 = Lstring3-Lsection_str ## DW_AT_name
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; DARWIN-NEXT: .long Lset5
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; DARWIN-NEXT: .long 39 ## DW_AT_type
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; DARWIN-NEXT: .long 47 ## DW_AT_type
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; DARWIN-NEXT: .byte 1 ## DW_AT_external
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; DARWIN-NEXT: .byte 1 ## DW_AT_decl_file
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; DARWIN-NEXT: .byte 1 ## DW_AT_decl_line
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