[lld] [llvm] [Symbolizer] Support for Missing Line Numbers. (PR #82240)
via llvm-commits
llvm-commits at lists.llvm.org
Tue May 14 23:49:22 PDT 2024
https://github.com/ampandey-1995 updated https://github.com/llvm/llvm-project/pull/82240
>From e128bc4bb3fb7f89d187ee2ad912654d9d2ec803 Mon Sep 17 00:00:00 2001
From: Amit Pandey <amit.pandey at amd.com>
Date: Wed, 14 Feb 2024 16:31:48 +0530
Subject: [PATCH 01/14] [Symbolizer] Support for Missing Line Numbers.
LLVM Symbolizer attempt to symbolize addresses of optimized binaries
reports missing line numbers for some cases. It maybe due to compiler
which sometimes cannot map an instruction to line number due to
optimizations. Symbolizer should handle those cases gracefully.
Adding an option '--skip-line-zero' to symbolizer so as to report the
nearest non-zero line number.
---
bolt/lib/Core/BinaryFunction.cpp | 3 +-
lld/Common/DWARF.cpp | 3 +-
llvm/docs/CommandGuide/llvm-symbolizer.rst | 4 +
llvm/include/llvm/DebugInfo/DIContext.h | 8 +-
.../llvm/DebugInfo/DWARF/DWARFDebugLine.h | 16 +-
.../llvm/DebugInfo/Symbolize/Symbolize.h | 2 +
llvm/lib/DebugInfo/DWARF/DWARFContext.cpp | 10 +-
llvm/lib/DebugInfo/DWARF/DWARFDebugLine.cpp | 35 ++++-
llvm/lib/DebugInfo/Symbolize/Symbolize.cpp | 8 +-
.../llvm-symbolizer/approximate-line-info.s | 142 ++++++++++++++++++
llvm/tools/llvm-symbolizer/Opts.td | 1 +
.../tools/llvm-symbolizer/llvm-symbolizer.cpp | 8 +
12 files changed, 215 insertions(+), 25 deletions(-)
create mode 100644 llvm/test/tools/llvm-symbolizer/approximate-line-info.s
diff --git a/bolt/lib/Core/BinaryFunction.cpp b/bolt/lib/Core/BinaryFunction.cpp
index 4f44ba0d970c0..f03d88f0a9ec5 100644
--- a/bolt/lib/Core/BinaryFunction.cpp
+++ b/bolt/lib/Core/BinaryFunction.cpp
@@ -193,7 +193,8 @@ static SMLoc findDebugLineInformationForInstructionAt(
SMLoc NullResult = DebugLineTableRowRef::NULL_ROW.toSMLoc();
uint32_t RowIndex = LineTable->lookupAddress(
- {Address, object::SectionedAddress::UndefSection});
+ {Address, object::SectionedAddress::UndefSection},
+ DILineInfoSpecifier::ApproximateLineKind::None);
if (RowIndex == LineTable->UnknownRowIndex)
return NullResult;
diff --git a/lld/Common/DWARF.cpp b/lld/Common/DWARF.cpp
index 2cd8ca4575dee..8e1e9c6e53015 100644
--- a/lld/Common/DWARF.cpp
+++ b/lld/Common/DWARF.cpp
@@ -93,7 +93,8 @@ std::optional<DILineInfo> DWARFCache::getDILineInfo(uint64_t offset,
DILineInfo info;
for (const llvm::DWARFDebugLine::LineTable *lt : lineTables) {
if (lt->getFileLineInfoForAddress(
- {offset, sectionIndex}, nullptr,
+ {offset, sectionIndex},
+ DILineInfoSpecifier::ApproximateLineKind::None, nullptr,
DILineInfoSpecifier::FileLineInfoKind::AbsoluteFilePath, info))
return info;
}
diff --git a/llvm/docs/CommandGuide/llvm-symbolizer.rst b/llvm/docs/CommandGuide/llvm-symbolizer.rst
index 59c0ab6d196ac..ee60d97babcbc 100644
--- a/llvm/docs/CommandGuide/llvm-symbolizer.rst
+++ b/llvm/docs/CommandGuide/llvm-symbolizer.rst
@@ -216,6 +216,10 @@ OPTIONS
This can be used to perform lookups as if the object were relocated by the
offset.
+.. option:: --approximate-line-info=<before/after>
+
+ Search the object to find the approximate non-zero line numbers nearest to for a given address.
+
.. option:: --basenames, -s
Print just the file's name without any directories, instead of the
diff --git a/llvm/include/llvm/DebugInfo/DIContext.h b/llvm/include/llvm/DebugInfo/DIContext.h
index b75dc8db54336..eb4ff761119db 100644
--- a/llvm/include/llvm/DebugInfo/DIContext.h
+++ b/llvm/include/llvm/DebugInfo/DIContext.h
@@ -152,14 +152,16 @@ struct DILineInfoSpecifier {
RelativeFilePath,
AbsoluteFilePath
};
+ enum ApproximateLineKind { None, Before, After };
using FunctionNameKind = DINameKind;
-
FileLineInfoKind FLIKind;
FunctionNameKind FNKind;
+ ApproximateLineKind ALKind;
DILineInfoSpecifier(FileLineInfoKind FLIKind = FileLineInfoKind::RawValue,
- FunctionNameKind FNKind = FunctionNameKind::None)
- : FLIKind(FLIKind), FNKind(FNKind) {}
+ FunctionNameKind FNKind = FunctionNameKind::None,
+ ApproximateLineKind ALKind = ApproximateLineKind::None)
+ : FLIKind(FLIKind), FNKind(FNKind), ALKind(ALKind) {}
inline bool operator==(const DILineInfoSpecifier &RHS) const {
return FLIKind == RHS.FLIKind && FNKind == RHS.FNKind;
diff --git a/llvm/include/llvm/DebugInfo/DWARF/DWARFDebugLine.h b/llvm/include/llvm/DebugInfo/DWARF/DWARFDebugLine.h
index ce3bae6a1760c..cb3531b75730f 100644
--- a/llvm/include/llvm/DebugInfo/DWARF/DWARFDebugLine.h
+++ b/llvm/include/llvm/DebugInfo/DWARF/DWARFDebugLine.h
@@ -240,7 +240,9 @@ class DWARFDebugLine {
/// Returns the index of the row with file/line info for a given address,
/// or UnknownRowIndex if there is no such row.
- uint32_t lookupAddress(object::SectionedAddress Address) const;
+ uint32_t
+ lookupAddress(object::SectionedAddress Address,
+ DILineInfoSpecifier::ApproximateLineKind LineKind) const;
bool lookupAddressRange(object::SectionedAddress Address, uint64_t Size,
std::vector<uint32_t> &Result) const;
@@ -266,10 +268,10 @@ class DWARFDebugLine {
/// Fills the Result argument with the file and line information
/// corresponding to Address. Returns true on success.
- bool getFileLineInfoForAddress(object::SectionedAddress Address,
- const char *CompDir,
- DILineInfoSpecifier::FileLineInfoKind Kind,
- DILineInfo &Result) const;
+ bool getFileLineInfoForAddress(
+ object::SectionedAddress Address,
+ DILineInfoSpecifier::ApproximateLineKind LineKind, const char *CompDir,
+ DILineInfoSpecifier::FileLineInfoKind Kind, DILineInfo &Result) const;
/// Extracts directory name by its Entry in include directories table
/// in prologue. Returns true on success.
@@ -301,7 +303,9 @@ class DWARFDebugLine {
getSourceByIndex(uint64_t FileIndex,
DILineInfoSpecifier::FileLineInfoKind Kind) const;
- uint32_t lookupAddressImpl(object::SectionedAddress Address) const;
+ uint32_t
+ lookupAddressImpl(object::SectionedAddress Address,
+ DILineInfoSpecifier::ApproximateLineKind LineKind) const;
bool lookupAddressRangeImpl(object::SectionedAddress Address, uint64_t Size,
std::vector<uint32_t> &Result) const;
diff --git a/llvm/include/llvm/DebugInfo/Symbolize/Symbolize.h b/llvm/include/llvm/DebugInfo/Symbolize/Symbolize.h
index 11a169cfc20a6..7b560f4b7dbb2 100644
--- a/llvm/include/llvm/DebugInfo/Symbolize/Symbolize.h
+++ b/llvm/include/llvm/DebugInfo/Symbolize/Symbolize.h
@@ -44,6 +44,7 @@ using namespace object;
using FunctionNameKind = DILineInfoSpecifier::FunctionNameKind;
using FileLineInfoKind = DILineInfoSpecifier::FileLineInfoKind;
+using ApproximateLineKind = DILineInfoSpecifier::ApproximateLineKind;
class CachedBinary;
@@ -52,6 +53,7 @@ class LLVMSymbolizer {
struct Options {
FunctionNameKind PrintFunctions = FunctionNameKind::LinkageName;
FileLineInfoKind PathStyle = FileLineInfoKind::AbsoluteFilePath;
+ ApproximateLineKind ApproximateLineNumbers = ApproximateLineKind::None;
bool UseSymbolTable = true;
bool Demangle = true;
bool RelativeAddresses = false;
diff --git a/llvm/lib/DebugInfo/DWARF/DWARFContext.cpp b/llvm/lib/DebugInfo/DWARF/DWARFContext.cpp
index b7297c18da7c9..9bf7dbd0acc10 100644
--- a/llvm/lib/DebugInfo/DWARF/DWARFContext.cpp
+++ b/llvm/lib/DebugInfo/DWARF/DWARFContext.cpp
@@ -1742,8 +1742,8 @@ DILineInfo DWARFContext::getLineInfoForAddress(object::SectionedAddress Address,
if (Spec.FLIKind != FileLineInfoKind::None) {
if (const DWARFLineTable *LineTable = getLineTableForUnit(CU)) {
LineTable->getFileLineInfoForAddress(
- {Address.Address, Address.SectionIndex}, CU->getCompilationDir(),
- Spec.FLIKind, Result);
+ {Address.Address, Address.SectionIndex}, Spec.ALKind,
+ CU->getCompilationDir(), Spec.FLIKind, Result);
}
}
@@ -1838,7 +1838,7 @@ DWARFContext::getInliningInfoForAddress(object::SectionedAddress Address,
DILineInfo Frame;
LineTable = getLineTableForUnit(CU);
if (LineTable && LineTable->getFileLineInfoForAddress(
- {Address.Address, Address.SectionIndex},
+ {Address.Address, Address.SectionIndex}, Spec.ALKind,
CU->getCompilationDir(), Spec.FLIKind, Frame))
InliningInfo.addFrame(Frame);
}
@@ -1865,8 +1865,8 @@ DWARFContext::getInliningInfoForAddress(object::SectionedAddress Address,
// For the topmost routine, get file/line info from line table.
if (LineTable)
LineTable->getFileLineInfoForAddress(
- {Address.Address, Address.SectionIndex}, CU->getCompilationDir(),
- Spec.FLIKind, Frame);
+ {Address.Address, Address.SectionIndex}, Spec.ALKind,
+ CU->getCompilationDir(), Spec.FLIKind, Frame);
} else {
// Otherwise, use call file, call line and call column from
// previous DIE in inlined chain.
diff --git a/llvm/lib/DebugInfo/DWARF/DWARFDebugLine.cpp b/llvm/lib/DebugInfo/DWARF/DWARFDebugLine.cpp
index 572628f45fc23..f32c69abe5a0d 100644
--- a/llvm/lib/DebugInfo/DWARF/DWARFDebugLine.cpp
+++ b/llvm/lib/DebugInfo/DWARF/DWARFDebugLine.cpp
@@ -1313,10 +1313,11 @@ uint32_t DWARFDebugLine::LineTable::findRowInSeq(
}
uint32_t DWARFDebugLine::LineTable::lookupAddress(
- object::SectionedAddress Address) const {
+ object::SectionedAddress Address,
+ DILineInfoSpecifier::ApproximateLineKind LineKind) const {
// Search for relocatable addresses
- uint32_t Result = lookupAddressImpl(Address);
+ uint32_t Result = lookupAddressImpl(Address, LineKind);
if (Result != UnknownRowIndex ||
Address.SectionIndex == object::SectionedAddress::UndefSection)
@@ -1324,11 +1325,12 @@ uint32_t DWARFDebugLine::LineTable::lookupAddress(
// Search for absolute addresses
Address.SectionIndex = object::SectionedAddress::UndefSection;
- return lookupAddressImpl(Address);
+ return lookupAddressImpl(Address, LineKind);
}
uint32_t DWARFDebugLine::LineTable::lookupAddressImpl(
- object::SectionedAddress Address) const {
+ object::SectionedAddress Address,
+ DILineInfoSpecifier::ApproximateLineKind LineKind) const {
// First, find an instruction sequence containing the given address.
DWARFDebugLine::Sequence Sequence;
Sequence.SectionIndex = Address.SectionIndex;
@@ -1337,7 +1339,24 @@ uint32_t DWARFDebugLine::LineTable::lookupAddressImpl(
DWARFDebugLine::Sequence::orderByHighPC);
if (It == Sequences.end() || It->SectionIndex != Address.SectionIndex)
return UnknownRowIndex;
- return findRowInSeq(*It, Address);
+
+ uint32_t RowIndex = findRowInSeq(*It, Address);
+ if (LineKind == DILineInfoSpecifier::ApproximateLineKind::Before) {
+ for (auto SeqInst = Sequence.HighPC; SeqInst >= It->LowPC; --SeqInst) {
+ if (Rows[RowIndex].Line)
+ break;
+ Address.Address--;
+ RowIndex = findRowInSeq(*It, Address);
+ }
+ } else if (LineKind == DILineInfoSpecifier::ApproximateLineKind::After) {
+ for (auto SeqInst = Sequence.HighPC; SeqInst < It->HighPC; ++SeqInst) {
+ if (Rows[RowIndex].Line)
+ break;
+ Address.Address++;
+ RowIndex = findRowInSeq(*It, Address);
+ }
+ }
+ return RowIndex;
}
bool DWARFDebugLine::LineTable::lookupAddressRange(
@@ -1477,10 +1496,12 @@ bool DWARFDebugLine::Prologue::getFileNameByIndex(
}
bool DWARFDebugLine::LineTable::getFileLineInfoForAddress(
- object::SectionedAddress Address, const char *CompDir,
+ object::SectionedAddress Address,
+ DILineInfoSpecifier::ApproximateLineKind LineKind, const char *CompDir,
FileLineInfoKind Kind, DILineInfo &Result) const {
// Get the index of row we're looking for in the line table.
- uint32_t RowIndex = lookupAddress(Address);
+ uint32_t RowIndex = lookupAddress(Address, LineKind);
+
if (RowIndex == -1U)
return false;
// Take file number and line/column from the row.
diff --git a/llvm/lib/DebugInfo/Symbolize/Symbolize.cpp b/llvm/lib/DebugInfo/Symbolize/Symbolize.cpp
index 32c5e3251df62..6c8303bcee6ca 100644
--- a/llvm/lib/DebugInfo/Symbolize/Symbolize.cpp
+++ b/llvm/lib/DebugInfo/Symbolize/Symbolize.cpp
@@ -71,7 +71,9 @@ LLVMSymbolizer::symbolizeCodeCommon(const T &ModuleSpecifier,
ModuleOffset.Address += Info->getModulePreferredBase();
DILineInfo LineInfo = Info->symbolizeCode(
- ModuleOffset, DILineInfoSpecifier(Opts.PathStyle, Opts.PrintFunctions),
+ ModuleOffset,
+ DILineInfoSpecifier(Opts.PathStyle, Opts.PrintFunctions,
+ Opts.ApproximateLineNumbers),
Opts.UseSymbolTable);
if (Opts.Demangle)
LineInfo.FunctionName = DemangleName(LineInfo.FunctionName, Info);
@@ -116,7 +118,9 @@ Expected<DIInliningInfo> LLVMSymbolizer::symbolizeInlinedCodeCommon(
ModuleOffset.Address += Info->getModulePreferredBase();
DIInliningInfo InlinedContext = Info->symbolizeInlinedCode(
- ModuleOffset, DILineInfoSpecifier(Opts.PathStyle, Opts.PrintFunctions),
+ ModuleOffset,
+ DILineInfoSpecifier(Opts.PathStyle, Opts.PrintFunctions,
+ Opts.ApproximateLineNumbers),
Opts.UseSymbolTable);
if (Opts.Demangle) {
for (int i = 0, n = InlinedContext.getNumberOfFrames(); i < n; i++) {
diff --git a/llvm/test/tools/llvm-symbolizer/approximate-line-info.s b/llvm/test/tools/llvm-symbolizer/approximate-line-info.s
new file mode 100644
index 0000000000000..b7d56b0e64534
--- /dev/null
+++ b/llvm/test/tools/llvm-symbolizer/approximate-line-info.s
@@ -0,0 +1,142 @@
+# REQUIRES: x86-registered-target
+
+# RUN: llvm-mc -g -filetype=obj -triple=x86_64-pc-linux %s -o %t.o
+# RUN: llvm-symbolizer --obj=%t.o 0xa | FileCheck --check-prefix=APPROX-NONE %s
+# RUN: llvm-symbolizer --obj=%t.o --approximate-line-info=before 0xa | FileCheck --check-prefix=APPROX-BEFORE %s
+# RUN: llvm-symbolizer --obj=%t.o --approximate-line-info=after 0xa | FileCheck --check-prefix=APPROX-AFTER %s
+
+# APPROX-NONE: main
+# APPROX-NONE-NEXT: /home/ampandey/test-hip/main.c:0:6
+# APPROX-BEFORE: main
+# APPROX-BEFORE-NEXT: /home/ampandey/test-hip/main.c:4:6
+# APPROX-AFTER: main
+# APPROX-AFTER-NEXT: /home/ampandey/test-hip/main.c:8:2
+
+## Generated from C Code
+##
+## int foo = 0;
+## int x=89;
+## int main() {
+## if(x)
+## return foo;
+## else
+## return x;
+## }
+##
+## clang -S -O3 -gline-tables-only --target=x86_64-pc-linux
+
+ .text
+ .file "main.c"
+ .globl main # -- Begin function main
+ .p2align 4, 0x90
+ .type main, at function
+main: # @main
+.Lfunc_begin0:
+ .file 0 "/home/ampandey/test-hip" "main.c" md5 0x26c3fbaea8e6febaf09ef44d37ec5ecc
+ .cfi_startproc
+# %bb.0: # %entry
+ .loc 0 4 6 prologue_end # main.c:4:6
+ movl x(%rip), %eax
+ testl %eax, %eax
+ je .LBB0_2
+# %bb.1: # %entry
+ .loc 0 0 6 is_stmt 0 # main.c:0:6
+ movl foo(%rip), %eax
+.LBB0_2: # %entry
+ .loc 0 8 2 is_stmt 1 # main.c:8:2
+ retq
+.Ltmp0:
+.Lfunc_end0:
+ .size main, .Lfunc_end0-main
+ .cfi_endproc
+ # -- End function
+ .type foo, at object # @foo
+ .bss
+ .globl foo
+ .p2align 2, 0x0
+foo:
+ .long 0 # 0x0
+ .size foo, 4
+
+ .type x, at object # @x
+ .data
+ .globl x
+ .p2align 2, 0x0
+x:
+ .long 89 # 0x59
+ .size x, 4
+
+ .section .debug_abbrev,"", at progbits
+ .byte 1 # Abbreviation Code
+ .byte 17 # DW_TAG_compile_unit
+ .byte 0 # DW_CHILDREN_no
+ .byte 37 # DW_AT_producer
+ .byte 37 # DW_FORM_strx1
+ .byte 19 # DW_AT_language
+ .byte 5 # DW_FORM_data2
+ .byte 3 # DW_AT_name
+ .byte 37 # DW_FORM_strx1
+ .byte 114 # DW_AT_str_offsets_base
+ .byte 23 # DW_FORM_sec_offset
+ .byte 16 # DW_AT_stmt_list
+ .byte 23 # DW_FORM_sec_offset
+ .byte 27 # DW_AT_comp_dir
+ .byte 37 # DW_FORM_strx1
+ .byte 17 # DW_AT_low_pc
+ .byte 27 # DW_FORM_addrx
+ .byte 18 # DW_AT_high_pc
+ .byte 6 # DW_FORM_data4
+ .byte 115 # DW_AT_addr_base
+ .byte 23 # DW_FORM_sec_offset
+ .byte 0 # EOM(1)
+ .byte 0 # EOM(2)
+ .byte 0 # EOM(3)
+ .section .debug_info,"", at progbits
+.Lcu_begin0:
+ .long .Ldebug_info_end0-.Ldebug_info_start0 # Length of Unit
+.Ldebug_info_start0:
+ .short 5 # DWARF version number
+ .byte 1 # DWARF Unit Type
+ .byte 8 # Address Size (in bytes)
+ .long .debug_abbrev # Offset Into Abbrev. Section
+ .byte 1 # Abbrev [1] 0xc:0x17 DW_TAG_compile_unit
+ .byte 0 # DW_AT_producer
+ .short 29 # DW_AT_language
+ .byte 1 # DW_AT_name
+ .long .Lstr_offsets_base0 # DW_AT_str_offsets_base
+ .long .Lline_table_start0 # DW_AT_stmt_list
+ .byte 2 # DW_AT_comp_dir
+ .byte 0 # DW_AT_low_pc
+ .long .Lfunc_end0-.Lfunc_begin0 # DW_AT_high_pc
+ .long .Laddr_table_base0 # DW_AT_addr_base
+.Ldebug_info_end0:
+ .section .debug_str_offsets,"", at progbits
+ .long 16 # Length of String Offsets Set
+ .short 5
+ .short 0
+.Lstr_offsets_base0:
+ .section .debug_str,"MS", at progbits,1
+.Linfo_string0:
+ .asciz "clang version 19.0.0git (git at github.com:ampandey-1995/llvm-project.git 6751baed8d1ee8c5fd12fe5a06aa67275fc1ebf6)" # string offset=0
+.Linfo_string1:
+ .asciz "main.c" # string offset=113
+.Linfo_string2:
+ .asciz "/home/ampandey/test-hip" # string offset=120
+ .section .debug_str_offsets,"", at progbits
+ .long .Linfo_string0
+ .long .Linfo_string1
+ .long .Linfo_string2
+ .section .debug_addr,"", at progbits
+ .long .Ldebug_addr_end0-.Ldebug_addr_start0 # Length of contribution
+.Ldebug_addr_start0:
+ .short 5 # DWARF version number
+ .byte 8 # Address size
+ .byte 0 # Segment selector size
+.Laddr_table_base0:
+ .quad .Lfunc_begin0
+.Ldebug_addr_end0:
+ .ident "clang version 19.0.0git (git at github.com:ampandey-1995/llvm-project.git 6751baed8d1ee8c5fd12fe5a06aa67275fc1ebf6)"
+ .section ".note.GNU-stack","", at progbits
+ .addrsig
+ .section .debug_line,"", at progbits
+.Lline_table_start0:
diff --git a/llvm/tools/llvm-symbolizer/Opts.td b/llvm/tools/llvm-symbolizer/Opts.td
index edc80bfe59673..80ec4721c45e0 100644
--- a/llvm/tools/llvm-symbolizer/Opts.td
+++ b/llvm/tools/llvm-symbolizer/Opts.td
@@ -17,6 +17,7 @@ def grp_mach_o : OptionGroup<"kind">,
HelpText<"llvm-symbolizer Mach-O Specific Options">;
def addresses : F<"addresses", "Show address before line information">;
+defm approximate_line_info : Eq<"approximate-line-info","Find approximate non-zero line number information nearest to given address.">,Values<"<before/after>">;
defm adjust_vma
: Eq<"adjust-vma", "Add specified offset to object file addresses">,
MetaVarName<"<offset>">;
diff --git a/llvm/tools/llvm-symbolizer/llvm-symbolizer.cpp b/llvm/tools/llvm-symbolizer/llvm-symbolizer.cpp
index b98bdbc388faf..530dbdfd5c8b5 100644
--- a/llvm/tools/llvm-symbolizer/llvm-symbolizer.cpp
+++ b/llvm/tools/llvm-symbolizer/llvm-symbolizer.cpp
@@ -482,6 +482,14 @@ int llvm_symbolizer_main(int argc, char **argv, const llvm::ToolContext &) {
} else {
Opts.PathStyle = DILineInfoSpecifier::FileLineInfoKind::AbsoluteFilePath;
}
+ StringRef ApproximateLineKindVal =
+ Args.getLastArgValue(OPT_approximate_line_info_EQ);
+ Opts.ApproximateLineNumbers =
+ ApproximateLineKindVal == "before"
+ ? DILineInfoSpecifier::ApproximateLineKind::Before
+ : ApproximateLineKindVal == "after"
+ ? DILineInfoSpecifier::ApproximateLineKind::After
+ : DILineInfoSpecifier::ApproximateLineKind::None;
Opts.DebugFileDirectory = Args.getAllArgValues(OPT_debug_file_directory_EQ);
Opts.DefaultArch = Args.getLastArgValue(OPT_default_arch_EQ).str();
Opts.Demangle = Args.hasFlag(OPT_demangle, OPT_no_demangle, !IsAddr2Line);
>From c622be546570a199e2180479a376fd3e4f154d22 Mon Sep 17 00:00:00 2001
From: Amit Pandey <pandey.kumaramit2023 at gmail.com>
Date: Mon, 19 Feb 2024 17:40:53 +0530
Subject: [PATCH 02/14] Clean up some unused variables.
---
llvm/lib/DebugInfo/DWARF/DWARFDebugLine.cpp | 16 +++++++++-------
1 file changed, 9 insertions(+), 7 deletions(-)
diff --git a/llvm/lib/DebugInfo/DWARF/DWARFDebugLine.cpp b/llvm/lib/DebugInfo/DWARF/DWARFDebugLine.cpp
index f32c69abe5a0d..5b7d9ebeef715 100644
--- a/llvm/lib/DebugInfo/DWARF/DWARFDebugLine.cpp
+++ b/llvm/lib/DebugInfo/DWARF/DWARFDebugLine.cpp
@@ -1340,21 +1340,23 @@ uint32_t DWARFDebugLine::LineTable::lookupAddressImpl(
if (It == Sequences.end() || It->SectionIndex != Address.SectionIndex)
return UnknownRowIndex;
- uint32_t RowIndex = findRowInSeq(*It, Address);
+ uint32_t RowIndex;
if (LineKind == DILineInfoSpecifier::ApproximateLineKind::Before) {
- for (auto SeqInst = Sequence.HighPC; SeqInst >= It->LowPC; --SeqInst) {
+ for (auto SeqInst = Sequence.HighPC; SeqInst >= It->LowPC;) {
+ RowIndex = findRowInSeq(*It, Address);
if (Rows[RowIndex].Line)
break;
- Address.Address--;
- RowIndex = findRowInSeq(*It, Address);
+ Address.Address = --SeqInst;
}
} else if (LineKind == DILineInfoSpecifier::ApproximateLineKind::After) {
- for (auto SeqInst = Sequence.HighPC; SeqInst < It->HighPC; ++SeqInst) {
+ for (auto SeqInst = Sequence.HighPC; SeqInst <= It->HighPC;) {
+ RowIndex = findRowInSeq(*It, Address);
if (Rows[RowIndex].Line)
break;
- Address.Address++;
- RowIndex = findRowInSeq(*It, Address);
+ Address.Address = ++SeqInst;
}
+ } else {
+ RowIndex = findRowInSeq(*It, Address);
}
return RowIndex;
}
>From f2f6639a01e8a326db40151ff9b0cacd10d967d2 Mon Sep 17 00:00:00 2001
From: Amit Pandey <pandey.kumaramit2023 at gmail.com>
Date: Thu, 22 Feb 2024 21:44:04 +0530
Subject: [PATCH 03/14] Addressing Comments
Update the command guide,help output. Adding (approximate) tag to for
approximated line information output.
---
llvm/docs/CommandGuide/llvm-symbolizer.rst | 20 ++++++++++++++--
llvm/include/llvm/DebugInfo/DIContext.h | 2 ++
.../llvm/DebugInfo/DWARF/DWARFDebugLine.h | 4 ++--
llvm/lib/DebugInfo/DWARF/DWARFDebugLine.cpp | 24 ++++++++++++-------
llvm/lib/DebugInfo/Symbolize/DIPrinter.cpp | 12 +++++++---
.../llvm-symbolizer/approximate-line-info.s | 20 +++++++++++++---
.../output-style-json-code.test | 14 +++++------
llvm/test/tools/llvm-symbolizer/source.ll | 2 +-
8 files changed, 71 insertions(+), 27 deletions(-)
diff --git a/llvm/docs/CommandGuide/llvm-symbolizer.rst b/llvm/docs/CommandGuide/llvm-symbolizer.rst
index ee60d97babcbc..64e14a63861c6 100644
--- a/llvm/docs/CommandGuide/llvm-symbolizer.rst
+++ b/llvm/docs/CommandGuide/llvm-symbolizer.rst
@@ -207,6 +207,17 @@ Example 7 - Addresses as symbol names:
foz
/tmp/test.h:1:0
+Example 8 - Addresses having approximate line info:
+
+.. code-block:: console
+
+ $ llvm-symbolizer --obj=test.elf --approximate-line-info=before 0xa
+ main
+ /home/ampandey/test-hip/main.c:4:6 (approximate)
+ $ llvm-symbolizer --obj=test.elf --approximate-line-info=after 0xa
+ main
+ /home/ampandey/test-hip/main.c:8:2 (approximate)
+
OPTIONS
-------
@@ -216,9 +227,11 @@ OPTIONS
This can be used to perform lookups as if the object were relocated by the
offset.
-.. option:: --approximate-line-info=<before/after>
+.. option:: --approximate-line-info=<before|after>
- Search the object to find the approximate non-zero line numbers nearest to for a given address.
+ Print the approximate non-zero line number nearest to an input address.
+ Nearest lookup is performed by querying the line-table structure for an
+ address having non-zero line information with close proxmity.
.. option:: --basenames, -s
@@ -374,6 +387,7 @@ OPTIONS
"ModuleName": "inlined.elf",
"Symbol": [
{
+ "Approximate": false,
"Column": 18,
"Discriminator": 0,
"FileName": "/tmp/test.cpp",
@@ -384,6 +398,7 @@ OPTIONS
"StartLine": 9
},
{
+ "Approximate": false,
"Column": 0,
"Discriminator": 0,
"FileName": "/tmp/test.cpp",
@@ -400,6 +415,7 @@ OPTIONS
"ModuleName": "inlined.elf",
"Symbol": [
{
+ "Approximate": false,
"Column": 3,
"Discriminator": 0,
"FileName": "/tmp/test.cpp",
diff --git a/llvm/include/llvm/DebugInfo/DIContext.h b/llvm/include/llvm/DebugInfo/DIContext.h
index eb4ff761119db..fb18f6d124a49 100644
--- a/llvm/include/llvm/DebugInfo/DIContext.h
+++ b/llvm/include/llvm/DebugInfo/DIContext.h
@@ -30,6 +30,7 @@ namespace llvm {
/// A format-neutral container for source line information.
struct DILineInfo {
+ static constexpr const char *const ApproxString = "(approximate)";
// DILineInfo contains "<invalid>" for function/filename it cannot fetch.
static constexpr const char *const BadString = "<invalid>";
// Use "??" instead of "<invalid>" to make our output closer to addr2line.
@@ -50,6 +51,7 @@ struct DILineInfo {
// DWARF-specific.
uint32_t Discriminator = 0;
+ bool IsApproximatedLine = 0;
DILineInfo()
: FileName(BadString), FunctionName(BadString), StartFileName(BadString) {
}
diff --git a/llvm/include/llvm/DebugInfo/DWARF/DWARFDebugLine.h b/llvm/include/llvm/DebugInfo/DWARF/DWARFDebugLine.h
index cb3531b75730f..5a60dadf9269e 100644
--- a/llvm/include/llvm/DebugInfo/DWARF/DWARFDebugLine.h
+++ b/llvm/include/llvm/DebugInfo/DWARF/DWARFDebugLine.h
@@ -240,7 +240,7 @@ class DWARFDebugLine {
/// Returns the index of the row with file/line info for a given address,
/// or UnknownRowIndex if there is no such row.
- uint32_t
+ std::pair<uint32_t, bool>
lookupAddress(object::SectionedAddress Address,
DILineInfoSpecifier::ApproximateLineKind LineKind) const;
@@ -303,7 +303,7 @@ class DWARFDebugLine {
getSourceByIndex(uint64_t FileIndex,
DILineInfoSpecifier::FileLineInfoKind Kind) const;
- uint32_t
+ std::pair<uint32_t, bool>
lookupAddressImpl(object::SectionedAddress Address,
DILineInfoSpecifier::ApproximateLineKind LineKind) const;
diff --git a/llvm/lib/DebugInfo/DWARF/DWARFDebugLine.cpp b/llvm/lib/DebugInfo/DWARF/DWARFDebugLine.cpp
index 5b7d9ebeef715..71d4552259ded 100644
--- a/llvm/lib/DebugInfo/DWARF/DWARFDebugLine.cpp
+++ b/llvm/lib/DebugInfo/DWARF/DWARFDebugLine.cpp
@@ -1312,14 +1312,14 @@ uint32_t DWARFDebugLine::LineTable::findRowInSeq(
return RowPos - Rows.begin();
}
-uint32_t DWARFDebugLine::LineTable::lookupAddress(
+std::pair<uint32_t, bool> DWARFDebugLine::LineTable::lookupAddress(
object::SectionedAddress Address,
DILineInfoSpecifier::ApproximateLineKind LineKind) const {
// Search for relocatable addresses
- uint32_t Result = lookupAddressImpl(Address, LineKind);
+ std::pair<uint32_t, bool> Result = lookupAddressImpl(Address, LineKind);
- if (Result != UnknownRowIndex ||
+ if (Result.first != UnknownRowIndex ||
Address.SectionIndex == object::SectionedAddress::UndefSection)
return Result;
@@ -1328,7 +1328,7 @@ uint32_t DWARFDebugLine::LineTable::lookupAddress(
return lookupAddressImpl(Address, LineKind);
}
-uint32_t DWARFDebugLine::LineTable::lookupAddressImpl(
+std::pair<uint32_t, bool> DWARFDebugLine::LineTable::lookupAddressImpl(
object::SectionedAddress Address,
DILineInfoSpecifier::ApproximateLineKind LineKind) const {
// First, find an instruction sequence containing the given address.
@@ -1338,14 +1338,17 @@ uint32_t DWARFDebugLine::LineTable::lookupAddressImpl(
SequenceIter It = llvm::upper_bound(Sequences, Sequence,
DWARFDebugLine::Sequence::orderByHighPC);
if (It == Sequences.end() || It->SectionIndex != Address.SectionIndex)
- return UnknownRowIndex;
+ return {UnknownRowIndex, false};
- uint32_t RowIndex;
+ uint32_t RowIndex = UnknownRowIndex;
+ bool SecondAttempt = false;
if (LineKind == DILineInfoSpecifier::ApproximateLineKind::Before) {
for (auto SeqInst = Sequence.HighPC; SeqInst >= It->LowPC;) {
RowIndex = findRowInSeq(*It, Address);
if (Rows[RowIndex].Line)
break;
+ if (!SecondAttempt)
+ SecondAttempt = true;
Address.Address = --SeqInst;
}
} else if (LineKind == DILineInfoSpecifier::ApproximateLineKind::After) {
@@ -1353,12 +1356,14 @@ uint32_t DWARFDebugLine::LineTable::lookupAddressImpl(
RowIndex = findRowInSeq(*It, Address);
if (Rows[RowIndex].Line)
break;
+ if (!SecondAttempt)
+ SecondAttempt = true;
Address.Address = ++SeqInst;
}
} else {
RowIndex = findRowInSeq(*It, Address);
}
- return RowIndex;
+ return {RowIndex, SecondAttempt};
}
bool DWARFDebugLine::LineTable::lookupAddressRange(
@@ -1502,8 +1507,8 @@ bool DWARFDebugLine::LineTable::getFileLineInfoForAddress(
DILineInfoSpecifier::ApproximateLineKind LineKind, const char *CompDir,
FileLineInfoKind Kind, DILineInfo &Result) const {
// Get the index of row we're looking for in the line table.
- uint32_t RowIndex = lookupAddress(Address, LineKind);
-
+ auto &&RowIndexValue = lookupAddress(Address, LineKind);
+ uint32_t RowIndex = RowIndexValue.first;
if (RowIndex == -1U)
return false;
// Take file number and line/column from the row.
@@ -1514,6 +1519,7 @@ bool DWARFDebugLine::LineTable::getFileLineInfoForAddress(
Result.Column = Row.Column;
Result.Discriminator = Row.Discriminator;
Result.Source = getSourceByIndex(Row.File, Kind);
+ Result.IsApproximatedLine = RowIndexValue.second;
return true;
}
diff --git a/llvm/lib/DebugInfo/Symbolize/DIPrinter.cpp b/llvm/lib/DebugInfo/Symbolize/DIPrinter.cpp
index 716312f26e0ba..bce29d1e18a7d 100644
--- a/llvm/lib/DebugInfo/Symbolize/DIPrinter.cpp
+++ b/llvm/lib/DebugInfo/Symbolize/DIPrinter.cpp
@@ -131,14 +131,17 @@ void PlainPrinterBase::printFunctionName(StringRef FunctionName, bool Inlined) {
void LLVMPrinter::printSimpleLocation(StringRef Filename,
const DILineInfo &Info) {
- OS << Filename << ':' << Info.Line << ':' << Info.Column << '\n';
+ OS << Filename << ':' << Info.Line << ':' << Info.Column
+ << (Info.IsApproximatedLine ? (" " + Twine(Info.ApproxString)) : "")
+ << '\n';
printContext(
SourceCode(Filename, Info.Line, Config.SourceContextLines, Info.Source));
}
void GNUPrinter::printSimpleLocation(StringRef Filename,
const DILineInfo &Info) {
- OS << Filename << ':' << Info.Line;
+ OS << Filename << ':' << Info.Line
+ << (Info.IsApproximatedLine ? (" " + Twine(Info.ApproxString)) : "");
if (Info.Discriminator)
OS << " (discriminator " << Info.Discriminator << ')';
OS << '\n';
@@ -158,6 +161,8 @@ void PlainPrinterBase::printVerbose(StringRef Filename,
OS << " Column: " << Info.Column << '\n';
if (Info.Discriminator)
OS << " Discriminator: " << Info.Discriminator << '\n';
+ if (Info.IsApproximatedLine)
+ OS << " Approximate: " << Info.IsApproximatedLine << '\n';
}
void LLVMPrinter::printStartAddress(const DILineInfo &Info) {
@@ -308,7 +313,8 @@ static json::Object toJSON(const DILineInfo &LineInfo) {
LineInfo.FileName != DILineInfo::BadString ? LineInfo.FileName : ""},
{"Line", LineInfo.Line},
{"Column", LineInfo.Column},
- {"Discriminator", LineInfo.Discriminator}});
+ {"Discriminator", LineInfo.Discriminator},
+ {"Approximate", LineInfo.IsApproximatedLine}});
}
void JSONPrinter::print(const Request &Request, const DILineInfo &Info) {
diff --git a/llvm/test/tools/llvm-symbolizer/approximate-line-info.s b/llvm/test/tools/llvm-symbolizer/approximate-line-info.s
index b7d56b0e64534..26e595c83cdf8 100644
--- a/llvm/test/tools/llvm-symbolizer/approximate-line-info.s
+++ b/llvm/test/tools/llvm-symbolizer/approximate-line-info.s
@@ -1,16 +1,30 @@
# REQUIRES: x86-registered-target
# RUN: llvm-mc -g -filetype=obj -triple=x86_64-pc-linux %s -o %t.o
-# RUN: llvm-symbolizer --obj=%t.o 0xa | FileCheck --check-prefix=APPROX-NONE %s
+# RUN: llvm-symbolizer --obj=%t.o 0xa | FileCheck --check-prefixes=APPROX-NONE %s
# RUN: llvm-symbolizer --obj=%t.o --approximate-line-info=before 0xa | FileCheck --check-prefix=APPROX-BEFORE %s
# RUN: llvm-symbolizer --obj=%t.o --approximate-line-info=after 0xa | FileCheck --check-prefix=APPROX-AFTER %s
+# RUN: llvm-symbolizer --obj=%t.o --approximate-line-info=before 0xa 0x10 | FileCheck --check-prefixes=APPROX-BEFORE,NO-APPROX %s
+# RUN: llvm-symbolizer --obj=%t.o --approximate-line-info=before --verbose 0xa | FileCheck --check-prefix=APPROX-VERBOSE %s
+# RUN: llvm-symbolizer --obj=%t.o --approximate-line-info=before --output-style=JSON 0xa | FileCheck --check-prefix=APPROX-JSON %s
# APPROX-NONE: main
# APPROX-NONE-NEXT: /home/ampandey/test-hip/main.c:0:6
# APPROX-BEFORE: main
-# APPROX-BEFORE-NEXT: /home/ampandey/test-hip/main.c:4:6
+# APPROX-BEFORE-NEXT: /home/ampandey/test-hip/main.c:4:6 (approximate)
# APPROX-AFTER: main
-# APPROX-AFTER-NEXT: /home/ampandey/test-hip/main.c:8:2
+# APPROX-AFTER-NEXT: /home/ampandey/test-hip/main.c:8:2 (approximate)
+# NO-APPROX: main
+# NO-APPROX-NEXT: /home/ampandey/test-hip/main.c:8:2
+
+#APPROX-VERBOSE: main
+#APPROX-VERBOSE-NEXT: Filename: /home/ampandey/test-hip/main.c
+#APPROX-VERBOSE-NEXT: Function start address: 0x0
+#APPROX-VERBOSE-NEXT: Line: 4
+#APPROX-VERBOSE-NEXT: Column: 6
+#APPROX-VERBOSE-NEXT: Approximate: 1
+
+#APPROX-JSON: [{"Address":"0xa","ModuleName":"{{.*}}/test/tools/llvm-symbolizer/Output/approximate-line-info.s.tmp.o","Symbol":[{"Approximate":true,"Column":6,"Discriminator":0,"FileName":"/home/ampandey/test-hip/main.c","FunctionName":"main","Line":4,"StartAddress":"0x0","StartFileName":"","StartLine":0}]}]
## Generated from C Code
##
diff --git a/llvm/test/tools/llvm-symbolizer/output-style-json-code.test b/llvm/test/tools/llvm-symbolizer/output-style-json-code.test
index 0e0e61c0bf119..d6410eeae2201 100644
--- a/llvm/test/tools/llvm-symbolizer/output-style-json-code.test
+++ b/llvm/test/tools/llvm-symbolizer/output-style-json-code.test
@@ -12,12 +12,12 @@
## Expected a list with one empty object with default values.
# RUN: llvm-symbolizer --output-style=JSON -e %p/Inputs/addr.exe 0x10000000 | \
# RUN: FileCheck %s --check-prefix=NOT-FOUND --strict-whitespace --match-full-lines --implicit-check-not={{.}}
-# NOT-FOUND:[{"Address":"0x10000000","ModuleName":"{{.*}}/Inputs/addr.exe","Symbol":[{"Column":0,"Discriminator":0,"FileName":"","FunctionName":"","Line":0,"StartAddress":"","StartFileName":"","StartLine":0}]}]
+# NOT-FOUND:[{"Address":"0x10000000","ModuleName":"{{.*}}/Inputs/addr.exe","Symbol":[{"Approximate":false,"Column":0,"Discriminator":0,"FileName":"","FunctionName":"","Line":0,"StartAddress":"","StartFileName":"","StartLine":0}]}]
## Check a non-zero discriminator.
# RUN: llvm-symbolizer --output-style=JSON --obj=%p/Inputs/discrim 0x400575 | \
# RUN: FileCheck %s --check-prefix=DISCRIM --strict-whitespace --match-full-lines --implicit-check-not={{.}}
-# DISCRIM:[{"Address":"0x400575","ModuleName":"{{.*}}/Inputs/discrim","Symbol":[{"Column":17,"Discriminator":2,"FileName":"/tmp{{/|\\\\}}discrim.c","FunctionName":"foo","Line":5,"StartAddress":"0x400560","StartFileName":"/tmp{{/|\\\\}}discrim.c","StartLine":4}]}]
+# DISCRIM:[{"Address":"0x400575","ModuleName":"{{.*}}/Inputs/discrim","Symbol":[{"Approximate":false,"Column":17,"Discriminator":2,"FileName":"/tmp{{/|\\\\}}discrim.c","FunctionName":"foo","Line":5,"StartAddress":"0x400560","StartFileName":"/tmp{{/|\\\\}}discrim.c","StartLine":4}]}]
## In case of stdin input the output will contain a single JSON object for each input string.
@@ -27,7 +27,7 @@
## Invalid first argument before any valid one.
# NO-INLINES:{"Loc":[],"ModuleName":"{{.*}}/Inputs/addr.exe","SymName":"something"}
## Resolve valid address.
-# NO-INLINES-NEXT:{"Address":"0x40054d","ModuleName":"{{.*}}/Inputs/addr.exe","Symbol":[{"Column":3,"Discriminator":0,"FileName":"/tmp{{/|\\\\}}x.c","FunctionName":"main","Line":3,"StartAddress":"0x400540","StartFileName":"/tmp{{/|\\\\}}x.c","StartLine":2}]}
+# NO-INLINES-NEXT:{"Address":"0x40054d","ModuleName":"{{.*}}/Inputs/addr.exe","Symbol":[{"Approximate":false,"Column":3,"Discriminator":0,"FileName":"/tmp{{/|\\\\}}x.c","FunctionName":"main","Line":3,"StartAddress":"0x400540","StartFileName":"/tmp{{/|\\\\}}x.c","StartLine":2}]}
## Invalid argument after a valid one.
# NO-INLINES-NEXT:{"Loc":[],"ModuleName":"{{.*}}/Inputs/addr.exe","SymName":"some"}
@@ -37,7 +37,7 @@
## Invalid first argument before any valid one.
# INLINE:{"Loc":[],"ModuleName":"{{.*}}/Inputs/addr.exe","SymName":"something"}
## Resolve valid address.
-# INLINE-NEXT:{"Address":"0x40054d","ModuleName":"{{.*}}/Inputs/addr.exe","Symbol":[{"Column":3,"Discriminator":0,"FileName":"/tmp{{/|\\\\}}x.c","FunctionName":"inctwo","Line":3,"StartAddress":"0x400540","StartFileName":"/tmp{{/|\\\\}}x.c","StartLine":2},{"Column":0,"Discriminator":0,"FileName":"/tmp{{/|\\\\}}x.c","FunctionName":"inc","Line":7,"StartAddress":"0x400540","StartFileName":"/tmp{{/|\\\\}}x.c","StartLine":6},{"Column":0,"Discriminator":0,"FileName":"/tmp{{/|\\\\}}x.c","FunctionName":"main","Line":14,"StartAddress":"0x400540","StartFileName":"/tmp{{/|\\\\}}x.c","StartLine":12}]}
+# INLINE-NEXT:{"Address":"0x40054d","ModuleName":"{{.*}}/Inputs/addr.exe","Symbol":[{"Approximate":false,"Column":3,"Discriminator":0,"FileName":"/tmp{{/|\\\\}}x.c","FunctionName":"inctwo","Line":3,"StartAddress":"0x400540","StartFileName":"/tmp{{/|\\\\}}x.c","StartLine":2},{"Approximate":false,"Column":0,"Discriminator":0,"FileName":"/tmp{{/|\\\\}}x.c","FunctionName":"inc","Line":7,"StartAddress":"0x400540","StartFileName":"/tmp{{/|\\\\}}x.c","StartLine":6},{"Approximate":false,"Column":0,"Discriminator":0,"FileName":"/tmp{{/|\\\\}}x.c","FunctionName":"main","Line":14,"StartAddress":"0x400540","StartFileName":"/tmp{{/|\\\\}}x.c","StartLine":12}]}
## Invalid argument after a valid one.
# INLINE-NEXT:{"Loc":[],"ModuleName":"{{.*}}/Inputs/addr.exe","SymName":"some"}
@@ -48,7 +48,7 @@
## Invalid first argument before any valid one.
# INLINE-A2L:{"Loc":[],"ModuleName":"{{.*}}/Inputs/addr.exe","SymName":"something"}
## Resolve valid address.
-# INLINE-A2L-NEXT:{"Address":"0x40054d","ModuleName":"{{.*}}/Inputs/addr.exe","Symbol":[{"Column":3,"Discriminator":0,"FileName":"/tmp{{/|\\\\}}x.c","FunctionName":"inctwo","Line":3,"StartAddress":"0x400540","StartFileName":"/tmp{{/|\\\\}}x.c","StartLine":2},{"Column":0,"Discriminator":0,"FileName":"/tmp{{/|\\\\}}x.c","FunctionName":"inc","Line":7,"StartAddress":"0x400540","StartFileName":"/tmp{{/|\\\\}}x.c","StartLine":6},{"Column":0,"Discriminator":0,"FileName":"/tmp{{/|\\\\}}x.c","FunctionName":"main","Line":14,"StartAddress":"0x400540","StartFileName":"/tmp{{/|\\\\}}x.c","StartLine":12}]}
+# INLINE-A2L-NEXT:{"Address":"0x40054d","ModuleName":"{{.*}}/Inputs/addr.exe","Symbol":[{"Approximate":false,"Column":3,"Discriminator":0,"FileName":"/tmp{{/|\\\\}}x.c","FunctionName":"inctwo","Line":3,"StartAddress":"0x400540","StartFileName":"/tmp{{/|\\\\}}x.c","StartLine":2},{"Approximate":false,"Column":0,"Discriminator":0,"FileName":"/tmp{{/|\\\\}}x.c","FunctionName":"inc","Line":7,"StartAddress":"0x400540","StartFileName":"/tmp{{/|\\\\}}x.c","StartLine":6},{"Approximate":false,"Column":0,"Discriminator":0,"FileName":"/tmp{{/|\\\\}}x.c","FunctionName":"main","Line":14,"StartAddress":"0x400540","StartFileName":"/tmp{{/|\\\\}}x.c","StartLine":12}]}
## Invalid argument after a valid one.
# INLINE-A2L:{"Loc":[],"ModuleName":"{{.*}}/Inputs/addr.exe","SymName":"some"}
@@ -58,11 +58,11 @@
## Invalid first argument before any valid one.
# NO-FUNC-A2L:{"Loc":[],"ModuleName":"{{.*}}/Inputs/addr.exe","SymName":"something"}
## Resolve valid address.
-# NO-FUNC-A2L-NEXT:{"Address":"0x40054d","ModuleName":"{{.*}}/Inputs/addr.exe","Symbol":[{"Column":3,"Discriminator":0,"FileName":"/tmp{{/|\\\\}}x.c","FunctionName":"","Line":3,"StartAddress":"0x400540","StartFileName":"/tmp{{/|\\\\}}x.c","StartLine":2},{"Column":0,"Discriminator":0,"FileName":"/tmp{{/|\\\\}}x.c","FunctionName":"","Line":7,"StartAddress":"0x400540","StartFileName":"/tmp{{/|\\\\}}x.c","StartLine":6},{"Column":0,"Discriminator":0,"FileName":"/tmp{{/|\\\\}}x.c","FunctionName":"","Line":14,"StartAddress":"0x400540","StartFileName":"/tmp{{/|\\\\}}x.c","StartLine":12}]}
+# NO-FUNC-A2L-NEXT:{"Address":"0x40054d","ModuleName":"{{.*}}/Inputs/addr.exe","Symbol":[{"Approximate":false,"Column":3,"Discriminator":0,"FileName":"/tmp{{/|\\\\}}x.c","FunctionName":"","Line":3,"StartAddress":"0x400540","StartFileName":"/tmp{{/|\\\\}}x.c","StartLine":2},{"Approximate":false,"Column":0,"Discriminator":0,"FileName":"/tmp{{/|\\\\}}x.c","FunctionName":"","Line":7,"StartAddress":"0x400540","StartFileName":"/tmp{{/|\\\\}}x.c","StartLine":6},{"Approximate":false,"Column":0,"Discriminator":0,"FileName":"/tmp{{/|\\\\}}x.c","FunctionName":"","Line":14,"StartAddress":"0x400540","StartFileName":"/tmp{{/|\\\\}}x.c","StartLine":12}]}
## Invalid argument after a valid one.
# NO-FUNC-A2L-NEXT:{"Loc":[],"ModuleName":"{{.*}}/Inputs/addr.exe","SymName":"some"}
## When a module offset is specified by a symbol, more than one source location can be found.
# RUN: llvm-symbolizer --output-style=JSON --no-inlines -e %p/Inputs/symbols.so "static_func" | \
# RUN: FileCheck %s --check-prefix=MULTIPLE --strict-whitespace --match-full-lines --implicit-check-not={{.}}
-# MULTIPLE:[{"Loc":[{"Column":24,"Discriminator":0,"FileName":"/tmp/dbginfo{{/|\\\\}}symbols.part3.c","FunctionName":"static_func","Line":4,"StartAddress":"0x121d","StartFileName":"/tmp/dbginfo{{/|\\\\}}symbols.part3.c","StartLine":4},{"Column":24,"Discriminator":0,"FileName":"/tmp/dbginfo{{/|\\\\}}symbols.part4.c","FunctionName":"static_func","Line":4,"StartAddress":"0x125f","StartFileName":"/tmp/dbginfo{{/|\\\\}}symbols.part4.c","StartLine":4}],"ModuleName":"{{.*}}Inputs/symbols.so","SymName":"static_func"}]
+# MULTIPLE:[{"Loc":[{"Approximate":false,"Column":24,"Discriminator":0,"FileName":"/tmp/dbginfo{{/|\\\\}}symbols.part3.c","FunctionName":"static_func","Line":4,"StartAddress":"0x121d","StartFileName":"/tmp/dbginfo{{/|\\\\}}symbols.part3.c","StartLine":4},{"Approximate":false,"Column":24,"Discriminator":0,"FileName":"/tmp/dbginfo{{/|\\\\}}symbols.part4.c","FunctionName":"static_func","Line":4,"StartAddress":"0x125f","StartFileName":"/tmp/dbginfo{{/|\\\\}}symbols.part4.c","StartLine":4}],"ModuleName":"{{.*}}Inputs/symbols.so","SymName":"static_func"}]
diff --git a/llvm/test/tools/llvm-symbolizer/source.ll b/llvm/test/tools/llvm-symbolizer/source.ll
index 8a12c85812689..7f7072ee90b51 100644
--- a/llvm/test/tools/llvm-symbolizer/source.ll
+++ b/llvm/test/tools/llvm-symbolizer/source.ll
@@ -22,7 +22,7 @@
;; Check JSON style output.
; RUN: llvm-symbolizer --print-source-context-lines=3 --obj=%t.o 0 --output-style=JSON | \
; RUN: FileCheck %s --check-prefix=JSON --strict-whitespace --match-full-lines --implicit-check-not={{.}}
-; JSON:[{"Address":"0x0","ModuleName":"{{.*}}.o","Symbol":[{"Column":13,"Discriminator":0,"FileName":"/source.c","FunctionName":"foo","Line":3,"Source":"2 : // Line 2\n3 >: void foo() {}\n4 : // Line 4\n","StartAddress":"0x0","StartFileName":"/source.c","StartLine":3}]}]
+; JSON:[{"Address":"0x0","ModuleName":"{{.*}}.o","Symbol":[{"Approximate":false,"Column":13,"Discriminator":0,"FileName":"/source.c","FunctionName":"foo","Line":3,"Source":"2 : // Line 2\n3 >: void foo() {}\n4 : // Line 4\n","StartAddress":"0x0","StartFileName":"/source.c","StartLine":3}]}]
;; Generated from the following source:
;; // Line 1
>From 3887ac2c3a8732a73d61b24a8f9567760635300f Mon Sep 17 00:00:00 2001
From: Amit Pandey <pandey.kumaramit2023 at gmail.com>
Date: Thu, 22 Feb 2024 22:08:20 +0530
Subject: [PATCH 04/14] Fix Typos.
---
bolt/lib/Core/BinaryFunction.cpp | 3 ++-
llvm/lib/DebugInfo/DWARF/DWARFDebugLine.cpp | 2 +-
llvm/test/tools/llvm-symbolizer/approximate-line-info.s | 2 +-
3 files changed, 4 insertions(+), 3 deletions(-)
diff --git a/bolt/lib/Core/BinaryFunction.cpp b/bolt/lib/Core/BinaryFunction.cpp
index f03d88f0a9ec5..1581b09e11577 100644
--- a/bolt/lib/Core/BinaryFunction.cpp
+++ b/bolt/lib/Core/BinaryFunction.cpp
@@ -192,9 +192,10 @@ static SMLoc findDebugLineInformationForInstructionAt(
"Cannot fit instruction debug line information into SMLoc's pointer");
SMLoc NullResult = DebugLineTableRowRef::NULL_ROW.toSMLoc();
- uint32_t RowIndex = LineTable->lookupAddress(
+ auto RowIndexValue = LineTable->lookupAddress(
{Address, object::SectionedAddress::UndefSection},
DILineInfoSpecifier::ApproximateLineKind::None);
+ uint32_t RowIndex = RowIndexValue.first;
if (RowIndex == LineTable->UnknownRowIndex)
return NullResult;
diff --git a/llvm/lib/DebugInfo/DWARF/DWARFDebugLine.cpp b/llvm/lib/DebugInfo/DWARF/DWARFDebugLine.cpp
index 71d4552259ded..9d44812909c79 100644
--- a/llvm/lib/DebugInfo/DWARF/DWARFDebugLine.cpp
+++ b/llvm/lib/DebugInfo/DWARF/DWARFDebugLine.cpp
@@ -1507,7 +1507,7 @@ bool DWARFDebugLine::LineTable::getFileLineInfoForAddress(
DILineInfoSpecifier::ApproximateLineKind LineKind, const char *CompDir,
FileLineInfoKind Kind, DILineInfo &Result) const {
// Get the index of row we're looking for in the line table.
- auto &&RowIndexValue = lookupAddress(Address, LineKind);
+ auto RowIndexValue = lookupAddress(Address, LineKind);
uint32_t RowIndex = RowIndexValue.first;
if (RowIndex == -1U)
return false;
diff --git a/llvm/test/tools/llvm-symbolizer/approximate-line-info.s b/llvm/test/tools/llvm-symbolizer/approximate-line-info.s
index 26e595c83cdf8..9d3db5ef1b1e0 100644
--- a/llvm/test/tools/llvm-symbolizer/approximate-line-info.s
+++ b/llvm/test/tools/llvm-symbolizer/approximate-line-info.s
@@ -1,7 +1,7 @@
# REQUIRES: x86-registered-target
# RUN: llvm-mc -g -filetype=obj -triple=x86_64-pc-linux %s -o %t.o
-# RUN: llvm-symbolizer --obj=%t.o 0xa | FileCheck --check-prefixes=APPROX-NONE %s
+# RUN: llvm-symbolizer --obj=%t.o 0xa | FileCheck --check-prefix=APPROX-NONE %s
# RUN: llvm-symbolizer --obj=%t.o --approximate-line-info=before 0xa | FileCheck --check-prefix=APPROX-BEFORE %s
# RUN: llvm-symbolizer --obj=%t.o --approximate-line-info=after 0xa | FileCheck --check-prefix=APPROX-AFTER %s
# RUN: llvm-symbolizer --obj=%t.o --approximate-line-info=before 0xa 0x10 | FileCheck --check-prefixes=APPROX-BEFORE,NO-APPROX %s
>From 555443869ac4781b0ad525e28fad3642e4b6bab2 Mon Sep 17 00:00:00 2001
From: Amit Pandey <pandey.kumaramit2023 at gmail.com>
Date: Wed, 13 Mar 2024 10:43:28 +0530
Subject: [PATCH 05/14] Addressing Comments of @dwblaike
1. Simplifying loop logic.
2. Adding logic to search non-zero line information only upto function
boundaries.
---
llvm/docs/CommandGuide/llvm-symbolizer.rst | 2 +-
llvm/lib/DebugInfo/DWARF/DWARFDebugLine.cpp | 29 ++++++++++-----------
2 files changed, 15 insertions(+), 16 deletions(-)
diff --git a/llvm/docs/CommandGuide/llvm-symbolizer.rst b/llvm/docs/CommandGuide/llvm-symbolizer.rst
index 64e14a63861c6..76d155b49d00a 100644
--- a/llvm/docs/CommandGuide/llvm-symbolizer.rst
+++ b/llvm/docs/CommandGuide/llvm-symbolizer.rst
@@ -231,7 +231,7 @@ OPTIONS
Print the approximate non-zero line number nearest to an input address.
Nearest lookup is performed by querying the line-table structure for an
- address having non-zero line information with close proxmity.
+ address having non-zero line information with close proximity.
.. option:: --basenames, -s
diff --git a/llvm/lib/DebugInfo/DWARF/DWARFDebugLine.cpp b/llvm/lib/DebugInfo/DWARF/DWARFDebugLine.cpp
index 9d44812909c79..23ed45b1d81c2 100644
--- a/llvm/lib/DebugInfo/DWARF/DWARFDebugLine.cpp
+++ b/llvm/lib/DebugInfo/DWARF/DWARFDebugLine.cpp
@@ -1340,30 +1340,29 @@ std::pair<uint32_t, bool> DWARFDebugLine::LineTable::lookupAddressImpl(
if (It == Sequences.end() || It->SectionIndex != Address.SectionIndex)
return {UnknownRowIndex, false};
- uint32_t RowIndex = UnknownRowIndex;
- bool SecondAttempt = false;
+ uint32_t RowIndex = UnknownRowIndex;bool IsApproximate = false;
if (LineKind == DILineInfoSpecifier::ApproximateLineKind::Before) {
- for (auto SeqInst = Sequence.HighPC; SeqInst >= It->LowPC;) {
+ while (Address.Address >= It->LowPC) {
RowIndex = findRowInSeq(*It, Address);
- if (Rows[RowIndex].Line)
+ if(RowIndex!=UnknownRowIndex && Rows[RowIndex].Line)
break;
- if (!SecondAttempt)
- SecondAttempt = true;
- Address.Address = --SeqInst;
- }
+ IsApproximate = true;
+ if(RowIndex!=UnknownRowIndex && Rows[RowIndex].PrologueEnd)break;
+ --Address.Address;
+ }
} else if (LineKind == DILineInfoSpecifier::ApproximateLineKind::After) {
- for (auto SeqInst = Sequence.HighPC; SeqInst <= It->HighPC;) {
+ while (Address.Address <= It->HighPC) {
RowIndex = findRowInSeq(*It, Address);
- if (Rows[RowIndex].Line)
+ if (RowIndex!=UnknownRowIndex && Rows[RowIndex].Line)
break;
- if (!SecondAttempt)
- SecondAttempt = true;
- Address.Address = ++SeqInst;
- }
+ IsApproximate = true;
+ if(RowIndex!=UnknownRowIndex && Rows[RowIndex].EpilogueBegin)break;
+ ++Address.Address;
+ }
} else {
RowIndex = findRowInSeq(*It, Address);
}
- return {RowIndex, SecondAttempt};
+ return {RowIndex, IsApproximate};
}
bool DWARFDebugLine::LineTable::lookupAddressRange(
>From b5c472e260b3e1beaf8de19ad5ee55c5338ed8b7 Mon Sep 17 00:00:00 2001
From: Amit Pandey <pandey.kumaramit2023 at gmail.com>
Date: Wed, 13 Mar 2024 13:42:52 +0530
Subject: [PATCH 06/14] Fix Clang Format warning.
---
llvm/lib/DebugInfo/DWARF/DWARFDebugLine.cpp | 17 ++++++++++-------
.../llvm-symbolizer/approximate-line-info.s | 16 ++++++++--------
2 files changed, 18 insertions(+), 15 deletions(-)
diff --git a/llvm/lib/DebugInfo/DWARF/DWARFDebugLine.cpp b/llvm/lib/DebugInfo/DWARF/DWARFDebugLine.cpp
index 23ed45b1d81c2..dae29ae4ef7e1 100644
--- a/llvm/lib/DebugInfo/DWARF/DWARFDebugLine.cpp
+++ b/llvm/lib/DebugInfo/DWARF/DWARFDebugLine.cpp
@@ -1340,25 +1340,28 @@ std::pair<uint32_t, bool> DWARFDebugLine::LineTable::lookupAddressImpl(
if (It == Sequences.end() || It->SectionIndex != Address.SectionIndex)
return {UnknownRowIndex, false};
- uint32_t RowIndex = UnknownRowIndex;bool IsApproximate = false;
+ uint32_t RowIndex = UnknownRowIndex;
+ bool IsApproximate = false;
if (LineKind == DILineInfoSpecifier::ApproximateLineKind::Before) {
while (Address.Address >= It->LowPC) {
RowIndex = findRowInSeq(*It, Address);
- if(RowIndex!=UnknownRowIndex && Rows[RowIndex].Line)
+ if (RowIndex != UnknownRowIndex && Rows[RowIndex].Line)
break;
IsApproximate = true;
- if(RowIndex!=UnknownRowIndex && Rows[RowIndex].PrologueEnd)break;
+ if (RowIndex != UnknownRowIndex && Rows[RowIndex].PrologueEnd)
+ break;
--Address.Address;
- }
+ }
} else if (LineKind == DILineInfoSpecifier::ApproximateLineKind::After) {
while (Address.Address <= It->HighPC) {
RowIndex = findRowInSeq(*It, Address);
- if (RowIndex!=UnknownRowIndex && Rows[RowIndex].Line)
+ if (RowIndex != UnknownRowIndex && Rows[RowIndex].Line)
break;
IsApproximate = true;
- if(RowIndex!=UnknownRowIndex && Rows[RowIndex].EpilogueBegin)break;
+ if (RowIndex != UnknownRowIndex && Rows[RowIndex].EpilogueBegin)
+ break;
++Address.Address;
- }
+ }
} else {
RowIndex = findRowInSeq(*It, Address);
}
diff --git a/llvm/test/tools/llvm-symbolizer/approximate-line-info.s b/llvm/test/tools/llvm-symbolizer/approximate-line-info.s
index 9d3db5ef1b1e0..ad046f4c4d944 100644
--- a/llvm/test/tools/llvm-symbolizer/approximate-line-info.s
+++ b/llvm/test/tools/llvm-symbolizer/approximate-line-info.s
@@ -9,22 +9,22 @@
# RUN: llvm-symbolizer --obj=%t.o --approximate-line-info=before --output-style=JSON 0xa | FileCheck --check-prefix=APPROX-JSON %s
# APPROX-NONE: main
-# APPROX-NONE-NEXT: /home/ampandey/test-hip/main.c:0:6
+# APPROX-NONE-NEXT: /tmp/test/main.c:0:6
# APPROX-BEFORE: main
-# APPROX-BEFORE-NEXT: /home/ampandey/test-hip/main.c:4:6 (approximate)
+# APPROX-BEFORE-NEXT: /tmp/test/main.c:4:6 (approximate)
# APPROX-AFTER: main
-# APPROX-AFTER-NEXT: /home/ampandey/test-hip/main.c:8:2 (approximate)
+# APPROX-AFTER-NEXT: /tmp/test/main.c:8:2 (approximate)
# NO-APPROX: main
-# NO-APPROX-NEXT: /home/ampandey/test-hip/main.c:8:2
+# NO-APPROX-NEXT: /tmp/test/main.c:8:2
#APPROX-VERBOSE: main
-#APPROX-VERBOSE-NEXT: Filename: /home/ampandey/test-hip/main.c
+#APPROX-VERBOSE-NEXT: Filename: /tmp/test/main.c
#APPROX-VERBOSE-NEXT: Function start address: 0x0
#APPROX-VERBOSE-NEXT: Line: 4
#APPROX-VERBOSE-NEXT: Column: 6
#APPROX-VERBOSE-NEXT: Approximate: 1
-#APPROX-JSON: [{"Address":"0xa","ModuleName":"{{.*}}/test/tools/llvm-symbolizer/Output/approximate-line-info.s.tmp.o","Symbol":[{"Approximate":true,"Column":6,"Discriminator":0,"FileName":"/home/ampandey/test-hip/main.c","FunctionName":"main","Line":4,"StartAddress":"0x0","StartFileName":"","StartLine":0}]}]
+#APPROX-JSON: [{"Address":"0xa","ModuleName":"{{.*}}/test/tools/llvm-symbolizer/Output/approximate-line-info.s.tmp.o","Symbol":[{"Approximate":true,"Column":6,"Discriminator":0,"FileName":"/tmp/test/main.c","FunctionName":"main","Line":4,"StartAddress":"0x0","StartFileName":"","StartLine":0}]}]
## Generated from C Code
##
@@ -46,7 +46,7 @@
.type main, at function
main: # @main
.Lfunc_begin0:
- .file 0 "/home/ampandey/test-hip" "main.c" md5 0x26c3fbaea8e6febaf09ef44d37ec5ecc
+ .file 0 "/tmp/test" "main.c" md5 0x26c3fbaea8e6febaf09ef44d37ec5ecc
.cfi_startproc
# %bb.0: # %entry
.loc 0 4 6 prologue_end # main.c:4:6
@@ -135,7 +135,7 @@ x:
.Linfo_string1:
.asciz "main.c" # string offset=113
.Linfo_string2:
- .asciz "/home/ampandey/test-hip" # string offset=120
+ .asciz "/tmp/test" # string offset=120
.section .debug_str_offsets,"", at progbits
.long .Linfo_string0
.long .Linfo_string1
>From 20c96838f707e45ee554f6635d84cb912a3c6c10 Mon Sep 17 00:00:00 2001
From: Amit Pandey <pandey.kumaramit2023 at gmail.com>
Date: Thu, 14 Mar 2024 16:02:57 +0530
Subject: [PATCH 07/14] Fix Windows X64 CI failure.
---
llvm/docs/CommandGuide/llvm-symbolizer.rst | 2 +-
.../test/tools/llvm-symbolizer/approximate-line-info.s | 10 +++++-----
2 files changed, 6 insertions(+), 6 deletions(-)
diff --git a/llvm/docs/CommandGuide/llvm-symbolizer.rst b/llvm/docs/CommandGuide/llvm-symbolizer.rst
index 76d155b49d00a..8ba41b302138e 100644
--- a/llvm/docs/CommandGuide/llvm-symbolizer.rst
+++ b/llvm/docs/CommandGuide/llvm-symbolizer.rst
@@ -231,7 +231,7 @@ OPTIONS
Print the approximate non-zero line number nearest to an input address.
Nearest lookup is performed by querying the line-table structure for an
- address having non-zero line information with close proximity.
+ address having non-zero line information in close proximity.
.. option:: --basenames, -s
diff --git a/llvm/test/tools/llvm-symbolizer/approximate-line-info.s b/llvm/test/tools/llvm-symbolizer/approximate-line-info.s
index ad046f4c4d944..b3874a9e33a92 100644
--- a/llvm/test/tools/llvm-symbolizer/approximate-line-info.s
+++ b/llvm/test/tools/llvm-symbolizer/approximate-line-info.s
@@ -9,16 +9,16 @@
# RUN: llvm-symbolizer --obj=%t.o --approximate-line-info=before --output-style=JSON 0xa | FileCheck --check-prefix=APPROX-JSON %s
# APPROX-NONE: main
-# APPROX-NONE-NEXT: /tmp/test/main.c:0:6
+# APPROX-NONE-NEXT: {{[/\]+}}tmp{{[/\]+}}test{{[/\]+}}main.c:0:6
# APPROX-BEFORE: main
-# APPROX-BEFORE-NEXT: /tmp/test/main.c:4:6 (approximate)
+# APPROX-BEFORE-NEXT: {{[/\]+}}tmp{{[/\]+}}test{{[/\]+}}main.c:4:6 (approximate)
# APPROX-AFTER: main
-# APPROX-AFTER-NEXT: /tmp/test/main.c:8:2 (approximate)
+# APPROX-AFTER-NEXT: {{[/\]+}}tmp{{[/\]+}}test{{[/\]+}}main.c:8:2 (approximate)
# NO-APPROX: main
-# NO-APPROX-NEXT: /tmp/test/main.c:8:2
+# NO-APPROX-NEXT: {{[/\]+}}tmp{{[/\]+}}test{{[/\]+}}main.c:8:2
#APPROX-VERBOSE: main
-#APPROX-VERBOSE-NEXT: Filename: /tmp/test/main.c
+#APPROX-VERBOSE-NEXT: Filename: {{[/\]+}}tmp{{[/\]+}}test{{[/\]+}}main.c
#APPROX-VERBOSE-NEXT: Function start address: 0x0
#APPROX-VERBOSE-NEXT: Line: 4
#APPROX-VERBOSE-NEXT: Column: 6
>From a5c27d68d3cca9844fe5db6fd656f604314007c6 Mon Sep 17 00:00:00 2001
From: Amit Pandey <pandey.kumaramit2023 at gmail.com>
Date: Mon, 18 Mar 2024 15:04:30 +0530
Subject: [PATCH 08/14] Fix Windows CI Failure II
---
.../tools/llvm-symbolizer/approximate-line-info.s | 12 ++++++------
1 file changed, 6 insertions(+), 6 deletions(-)
diff --git a/llvm/test/tools/llvm-symbolizer/approximate-line-info.s b/llvm/test/tools/llvm-symbolizer/approximate-line-info.s
index b3874a9e33a92..114426ad74f54 100644
--- a/llvm/test/tools/llvm-symbolizer/approximate-line-info.s
+++ b/llvm/test/tools/llvm-symbolizer/approximate-line-info.s
@@ -9,22 +9,22 @@
# RUN: llvm-symbolizer --obj=%t.o --approximate-line-info=before --output-style=JSON 0xa | FileCheck --check-prefix=APPROX-JSON %s
# APPROX-NONE: main
-# APPROX-NONE-NEXT: {{[/\]+}}tmp{{[/\]+}}test{{[/\]+}}main.c:0:6
+# APPROX-NONE-NEXT: /tmp/test{{[/|\]}}main.c:0:6
# APPROX-BEFORE: main
-# APPROX-BEFORE-NEXT: {{[/\]+}}tmp{{[/\]+}}test{{[/\]+}}main.c:4:6 (approximate)
+# APPROX-BEFORE-NEXT: /tmp/test{{[/|\]}}main.c:4:6 (approximate)
# APPROX-AFTER: main
-# APPROX-AFTER-NEXT: {{[/\]+}}tmp{{[/\]+}}test{{[/\]+}}main.c:8:2 (approximate)
+# APPROX-AFTER-NEXT: /tmp/test{{[/|\]}}main.c:8:2 (approximate)
# NO-APPROX: main
-# NO-APPROX-NEXT: {{[/\]+}}tmp{{[/\]+}}test{{[/\]+}}main.c:8:2
+# NO-APPROX-NEXT: /tmp/test{{[/|\]}}main.c:8:2
#APPROX-VERBOSE: main
-#APPROX-VERBOSE-NEXT: Filename: {{[/\]+}}tmp{{[/\]+}}test{{[/\]+}}main.c
+#APPROX-VERBOSE-NEXT: Filename: /tmp/test{{[/|\]}}main.c
#APPROX-VERBOSE-NEXT: Function start address: 0x0
#APPROX-VERBOSE-NEXT: Line: 4
#APPROX-VERBOSE-NEXT: Column: 6
#APPROX-VERBOSE-NEXT: Approximate: 1
-#APPROX-JSON: [{"Address":"0xa","ModuleName":"{{.*}}/test/tools/llvm-symbolizer/Output/approximate-line-info.s.tmp.o","Symbol":[{"Approximate":true,"Column":6,"Discriminator":0,"FileName":"/tmp/test/main.c","FunctionName":"main","Line":4,"StartAddress":"0x0","StartFileName":"","StartLine":0}]}]
+#APPROX-JSON: [{"Address":"0xa","ModuleName":"{{.*}}/test/tools/llvm-symbolizer/Output/approximate-line-info.s.tmp.o","Symbol":[{"Approximate":true,"Column":6,"Discriminator":0,"FileName":"/tmp/test{{[/|\]}}main.c","FunctionName":"main","Line":4,"StartAddress":"0x0","StartFileName":"","StartLine":0}]}]
## Generated from C Code
##
>From 8b948a15d71640d627e4bbf6ef808f3bf7a52cca Mon Sep 17 00:00:00 2001
From: Amit Pandey <pandey.kumaramit2023 at gmail.com>
Date: Tue, 26 Mar 2024 11:04:25 +0530
Subject: [PATCH 09/14] Fix Windows CI III
---
.../test/tools/llvm-symbolizer/approximate-line-info.s | 10 +++++-----
1 file changed, 5 insertions(+), 5 deletions(-)
diff --git a/llvm/test/tools/llvm-symbolizer/approximate-line-info.s b/llvm/test/tools/llvm-symbolizer/approximate-line-info.s
index 114426ad74f54..480d5cbed6133 100644
--- a/llvm/test/tools/llvm-symbolizer/approximate-line-info.s
+++ b/llvm/test/tools/llvm-symbolizer/approximate-line-info.s
@@ -9,13 +9,13 @@
# RUN: llvm-symbolizer --obj=%t.o --approximate-line-info=before --output-style=JSON 0xa | FileCheck --check-prefix=APPROX-JSON %s
# APPROX-NONE: main
-# APPROX-NONE-NEXT: /tmp/test{{[/|\]}}main.c:0:6
+# APPROX-NONE-NEXT: {{[/|\]+}}tmp{{[/|\]+}}test{{[/|\]+}}main.c:0:6
# APPROX-BEFORE: main
-# APPROX-BEFORE-NEXT: /tmp/test{{[/|\]}}main.c:4:6 (approximate)
+# APPROX-BEFORE-NEXT: {{[/|\]+}}tmp{{[/|\]+}}test{{[/|\]+}}main.c:4:6 (approximate)
# APPROX-AFTER: main
-# APPROX-AFTER-NEXT: /tmp/test{{[/|\]}}main.c:8:2 (approximate)
+# APPROX-AFTER-NEXT: {{[/|\]+}}tmp{{[/|\]+}}test{{[/|\]+}}main.c:8:2 (approximate)
# NO-APPROX: main
-# NO-APPROX-NEXT: /tmp/test{{[/|\]}}main.c:8:2
+# NO-APPROX-NEXT: {{[/|\]+}}tmp{{[/|\]+}}test{{[/|\]+}}main.c:8:2
#APPROX-VERBOSE: main
#APPROX-VERBOSE-NEXT: Filename: /tmp/test{{[/|\]}}main.c
@@ -24,7 +24,7 @@
#APPROX-VERBOSE-NEXT: Column: 6
#APPROX-VERBOSE-NEXT: Approximate: 1
-#APPROX-JSON: [{"Address":"0xa","ModuleName":"{{.*}}/test/tools/llvm-symbolizer/Output/approximate-line-info.s.tmp.o","Symbol":[{"Approximate":true,"Column":6,"Discriminator":0,"FileName":"/tmp/test{{[/|\]}}main.c","FunctionName":"main","Line":4,"StartAddress":"0x0","StartFileName":"","StartLine":0}]}]
+#APPROX-JSON: [{"Address":"0xa","ModuleName":"{{.*}}{{[/|\]+}}test{{[/|\]+}}tools{{[/|\]+}}llvm-symbolizer{{[/|\]+}}Output{{[/|\]+}}approximate-line-info.s.tmp.o","Symbol":[{"Approximate":true,"Column":6,"Discriminator":0,"FileName":"{{[/|\]+}}tmp{{[/|\]+}}test{{[/|\]+}}main.c","FunctionName":"main","Line":4,"StartAddress":"0x0","StartFileName":"","StartLine":0}]}]
## Generated from C Code
##
>From b35b55b699e0107b75f14d1704c9165489ca9156 Mon Sep 17 00:00:00 2001
From: Amit Pandey <pandey.kumaramit2023 at gmail.com>
Date: Wed, 3 Apr 2024 16:36:12 +0530
Subject: [PATCH 10/14] Address Comments of @dwblaike
---
llvm/docs/CommandGuide/llvm-symbolizer.rst | 4 ++--
llvm/lib/DebugInfo/DWARF/DWARFDebugLine.cpp | 6 ++++--
2 files changed, 6 insertions(+), 4 deletions(-)
diff --git a/llvm/docs/CommandGuide/llvm-symbolizer.rst b/llvm/docs/CommandGuide/llvm-symbolizer.rst
index 8ba41b302138e..b75173781164d 100644
--- a/llvm/docs/CommandGuide/llvm-symbolizer.rst
+++ b/llvm/docs/CommandGuide/llvm-symbolizer.rst
@@ -213,10 +213,10 @@ Example 8 - Addresses having approximate line info:
$ llvm-symbolizer --obj=test.elf --approximate-line-info=before 0xa
main
- /home/ampandey/test-hip/main.c:4:6 (approximate)
+ /tmp/test/main.c:4:6 (approximate)
$ llvm-symbolizer --obj=test.elf --approximate-line-info=after 0xa
main
- /home/ampandey/test-hip/main.c:8:2 (approximate)
+ /tmp/test/main.c:8:2 (approximate)
OPTIONS
-------
diff --git a/llvm/lib/DebugInfo/DWARF/DWARFDebugLine.cpp b/llvm/lib/DebugInfo/DWARF/DWARFDebugLine.cpp
index dae29ae4ef7e1..87558d4ee578b 100644
--- a/llvm/lib/DebugInfo/DWARF/DWARFDebugLine.cpp
+++ b/llvm/lib/DebugInfo/DWARF/DWARFDebugLine.cpp
@@ -1348,7 +1348,8 @@ std::pair<uint32_t, bool> DWARFDebugLine::LineTable::lookupAddressImpl(
if (RowIndex != UnknownRowIndex && Rows[RowIndex].Line)
break;
IsApproximate = true;
- if (RowIndex != UnknownRowIndex && Rows[RowIndex].PrologueEnd)
+ if (RowIndex != UnknownRowIndex &&
+ (Rows[RowIndex].BasicBlock | Rows[RowIndex].PrologueEnd))
break;
--Address.Address;
}
@@ -1358,7 +1359,8 @@ std::pair<uint32_t, bool> DWARFDebugLine::LineTable::lookupAddressImpl(
if (RowIndex != UnknownRowIndex && Rows[RowIndex].Line)
break;
IsApproximate = true;
- if (RowIndex != UnknownRowIndex && Rows[RowIndex].EpilogueBegin)
+ if (RowIndex != UnknownRowIndex &&
+ (Rows[RowIndex].BasicBlock | Rows[RowIndex].EpilogueBegin))
break;
++Address.Address;
}
>From 883f39ddf6490b9ceb5b0ec7ca5bcf7e37707e77 Mon Sep 17 00:00:00 2001
From: Amit Pandey <pandey.kumaramit2023 at gmail.com>
Date: Mon, 29 Apr 2024 16:56:14 +0530
Subject: [PATCH 11/14] Address comments.
---
bolt/lib/Core/BinaryFunction.cpp | 3 +-
lld/Common/DWARF.cpp | 3 +-
llvm/docs/CommandGuide/llvm-symbolizer.rst | 13 ++---
llvm/include/llvm/DebugInfo/DIContext.h | 7 ++-
.../llvm/DebugInfo/DWARF/DWARFDebugLine.h | 15 +++---
.../llvm/DebugInfo/Symbolize/Symbolize.h | 3 +-
llvm/lib/DebugInfo/DWARF/DWARFContext.cpp | 15 +++---
llvm/lib/DebugInfo/DWARF/DWARFDebugLine.cpp | 53 ++++++++-----------
llvm/lib/DebugInfo/Symbolize/Symbolize.cpp | 4 +-
.../llvm-symbolizer/approximate-line-info.s | 39 +++++++-------
llvm/tools/llvm-symbolizer/Opts.td | 2 +-
.../tools/llvm-symbolizer/llvm-symbolizer.cpp | 9 +---
12 files changed, 69 insertions(+), 97 deletions(-)
diff --git a/bolt/lib/Core/BinaryFunction.cpp b/bolt/lib/Core/BinaryFunction.cpp
index 1581b09e11577..e7e10e923249b 100644
--- a/bolt/lib/Core/BinaryFunction.cpp
+++ b/bolt/lib/Core/BinaryFunction.cpp
@@ -193,8 +193,7 @@ static SMLoc findDebugLineInformationForInstructionAt(
SMLoc NullResult = DebugLineTableRowRef::NULL_ROW.toSMLoc();
auto RowIndexValue = LineTable->lookupAddress(
- {Address, object::SectionedAddress::UndefSection},
- DILineInfoSpecifier::ApproximateLineKind::None);
+ {Address, object::SectionedAddress::UndefSection}, false);
uint32_t RowIndex = RowIndexValue.first;
if (RowIndex == LineTable->UnknownRowIndex)
return NullResult;
diff --git a/lld/Common/DWARF.cpp b/lld/Common/DWARF.cpp
index 8e1e9c6e53015..fc1b6d22c1a10 100644
--- a/lld/Common/DWARF.cpp
+++ b/lld/Common/DWARF.cpp
@@ -93,8 +93,7 @@ std::optional<DILineInfo> DWARFCache::getDILineInfo(uint64_t offset,
DILineInfo info;
for (const llvm::DWARFDebugLine::LineTable *lt : lineTables) {
if (lt->getFileLineInfoForAddress(
- {offset, sectionIndex},
- DILineInfoSpecifier::ApproximateLineKind::None, nullptr,
+ {offset, sectionIndex}, nullptr, false,
DILineInfoSpecifier::FileLineInfoKind::AbsoluteFilePath, info))
return info;
}
diff --git a/llvm/docs/CommandGuide/llvm-symbolizer.rst b/llvm/docs/CommandGuide/llvm-symbolizer.rst
index b75173781164d..bdf206c31b855 100644
--- a/llvm/docs/CommandGuide/llvm-symbolizer.rst
+++ b/llvm/docs/CommandGuide/llvm-symbolizer.rst
@@ -211,12 +211,9 @@ Example 8 - Addresses having approximate line info:
.. code-block:: console
- $ llvm-symbolizer --obj=test.elf --approximate-line-info=before 0xa
+ $ llvm-symbolizer --obj=test.elf --approximate-line 0xa
main
/tmp/test/main.c:4:6 (approximate)
- $ llvm-symbolizer --obj=test.elf --approximate-line-info=after 0xa
- main
- /tmp/test/main.c:8:2 (approximate)
OPTIONS
-------
@@ -227,11 +224,11 @@ OPTIONS
This can be used to perform lookups as if the object were relocated by the
offset.
-.. option:: --approximate-line-info=<before|after>
+.. option:: --approximate-line
- Print the approximate non-zero line number nearest to an input address.
- Nearest lookup is performed by querying the line-table structure for an
- address having non-zero line information in close proximity.
+ Print the approximate non-zero line number that is nearest to before an
+ input address. Nearest lookup is performed by querying the line-table
+ structure for an address having non-zero line information in close proximity.
.. option:: --basenames, -s
diff --git a/llvm/include/llvm/DebugInfo/DIContext.h b/llvm/include/llvm/DebugInfo/DIContext.h
index fb18f6d124a49..d075cbd1dd147 100644
--- a/llvm/include/llvm/DebugInfo/DIContext.h
+++ b/llvm/include/llvm/DebugInfo/DIContext.h
@@ -154,16 +154,15 @@ struct DILineInfoSpecifier {
RelativeFilePath,
AbsoluteFilePath
};
- enum ApproximateLineKind { None, Before, After };
using FunctionNameKind = DINameKind;
FileLineInfoKind FLIKind;
FunctionNameKind FNKind;
- ApproximateLineKind ALKind;
+ bool ApproximateLine;
DILineInfoSpecifier(FileLineInfoKind FLIKind = FileLineInfoKind::RawValue,
FunctionNameKind FNKind = FunctionNameKind::None,
- ApproximateLineKind ALKind = ApproximateLineKind::None)
- : FLIKind(FLIKind), FNKind(FNKind), ALKind(ALKind) {}
+ bool ApproximateLine = false)
+ : FLIKind(FLIKind), FNKind(FNKind), ApproximateLine(ApproximateLine) {}
inline bool operator==(const DILineInfoSpecifier &RHS) const {
return FLIKind == RHS.FLIKind && FNKind == RHS.FNKind;
diff --git a/llvm/include/llvm/DebugInfo/DWARF/DWARFDebugLine.h b/llvm/include/llvm/DebugInfo/DWARF/DWARFDebugLine.h
index 5a60dadf9269e..b8b5f1d8688f8 100644
--- a/llvm/include/llvm/DebugInfo/DWARF/DWARFDebugLine.h
+++ b/llvm/include/llvm/DebugInfo/DWARF/DWARFDebugLine.h
@@ -240,9 +240,8 @@ class DWARFDebugLine {
/// Returns the index of the row with file/line info for a given address,
/// or UnknownRowIndex if there is no such row.
- std::pair<uint32_t, bool>
- lookupAddress(object::SectionedAddress Address,
- DILineInfoSpecifier::ApproximateLineKind LineKind) const;
+ std::pair<uint32_t, bool> lookupAddress(object::SectionedAddress Address,
+ bool ApproximateLine) const;
bool lookupAddressRange(object::SectionedAddress Address, uint64_t Size,
std::vector<uint32_t> &Result) const;
@@ -268,10 +267,10 @@ class DWARFDebugLine {
/// Fills the Result argument with the file and line information
/// corresponding to Address. Returns true on success.
- bool getFileLineInfoForAddress(
- object::SectionedAddress Address,
- DILineInfoSpecifier::ApproximateLineKind LineKind, const char *CompDir,
- DILineInfoSpecifier::FileLineInfoKind Kind, DILineInfo &Result) const;
+ bool getFileLineInfoForAddress(object::SectionedAddress Address,
+ const char *CompDir, bool ApproximateLine,
+ DILineInfoSpecifier::FileLineInfoKind Kind,
+ DILineInfo &Result) const;
/// Extracts directory name by its Entry in include directories table
/// in prologue. Returns true on success.
@@ -305,7 +304,7 @@ class DWARFDebugLine {
std::pair<uint32_t, bool>
lookupAddressImpl(object::SectionedAddress Address,
- DILineInfoSpecifier::ApproximateLineKind LineKind) const;
+ bool ApproximateLine) const;
bool lookupAddressRangeImpl(object::SectionedAddress Address, uint64_t Size,
std::vector<uint32_t> &Result) const;
diff --git a/llvm/include/llvm/DebugInfo/Symbolize/Symbolize.h b/llvm/include/llvm/DebugInfo/Symbolize/Symbolize.h
index 7b560f4b7dbb2..9dc9af7f0ddbb 100644
--- a/llvm/include/llvm/DebugInfo/Symbolize/Symbolize.h
+++ b/llvm/include/llvm/DebugInfo/Symbolize/Symbolize.h
@@ -44,7 +44,6 @@ using namespace object;
using FunctionNameKind = DILineInfoSpecifier::FunctionNameKind;
using FileLineInfoKind = DILineInfoSpecifier::FileLineInfoKind;
-using ApproximateLineKind = DILineInfoSpecifier::ApproximateLineKind;
class CachedBinary;
@@ -53,7 +52,7 @@ class LLVMSymbolizer {
struct Options {
FunctionNameKind PrintFunctions = FunctionNameKind::LinkageName;
FileLineInfoKind PathStyle = FileLineInfoKind::AbsoluteFilePath;
- ApproximateLineKind ApproximateLineNumbers = ApproximateLineKind::None;
+ bool ApproximateLine = false;
bool UseSymbolTable = true;
bool Demangle = true;
bool RelativeAddresses = false;
diff --git a/llvm/lib/DebugInfo/DWARF/DWARFContext.cpp b/llvm/lib/DebugInfo/DWARF/DWARFContext.cpp
index 9bf7dbd0acc10..49fc4dd00c4fe 100644
--- a/llvm/lib/DebugInfo/DWARF/DWARFContext.cpp
+++ b/llvm/lib/DebugInfo/DWARF/DWARFContext.cpp
@@ -1742,8 +1742,8 @@ DILineInfo DWARFContext::getLineInfoForAddress(object::SectionedAddress Address,
if (Spec.FLIKind != FileLineInfoKind::None) {
if (const DWARFLineTable *LineTable = getLineTableForUnit(CU)) {
LineTable->getFileLineInfoForAddress(
- {Address.Address, Address.SectionIndex}, Spec.ALKind,
- CU->getCompilationDir(), Spec.FLIKind, Result);
+ {Address.Address, Address.SectionIndex}, CU->getCompilationDir(),
+ Spec.ApproximateLine, Spec.FLIKind, Result);
}
}
@@ -1837,9 +1837,10 @@ DWARFContext::getInliningInfoForAddress(object::SectionedAddress Address,
if (Spec.FLIKind != FileLineInfoKind::None) {
DILineInfo Frame;
LineTable = getLineTableForUnit(CU);
- if (LineTable && LineTable->getFileLineInfoForAddress(
- {Address.Address, Address.SectionIndex}, Spec.ALKind,
- CU->getCompilationDir(), Spec.FLIKind, Frame))
+ if (LineTable &&
+ LineTable->getFileLineInfoForAddress(
+ {Address.Address, Address.SectionIndex}, CU->getCompilationDir(),
+ Spec.ApproximateLine, Spec.FLIKind, Frame))
InliningInfo.addFrame(Frame);
}
return InliningInfo;
@@ -1865,8 +1866,8 @@ DWARFContext::getInliningInfoForAddress(object::SectionedAddress Address,
// For the topmost routine, get file/line info from line table.
if (LineTable)
LineTable->getFileLineInfoForAddress(
- {Address.Address, Address.SectionIndex}, Spec.ALKind,
- CU->getCompilationDir(), Spec.FLIKind, Frame);
+ {Address.Address, Address.SectionIndex}, CU->getCompilationDir(),
+ Spec.ApproximateLine, Spec.FLIKind, Frame);
} else {
// Otherwise, use call file, call line and call column from
// previous DIE in inlined chain.
diff --git a/llvm/lib/DebugInfo/DWARF/DWARFDebugLine.cpp b/llvm/lib/DebugInfo/DWARF/DWARFDebugLine.cpp
index 87558d4ee578b..0db77795700fa 100644
--- a/llvm/lib/DebugInfo/DWARF/DWARFDebugLine.cpp
+++ b/llvm/lib/DebugInfo/DWARF/DWARFDebugLine.cpp
@@ -1312,12 +1312,13 @@ uint32_t DWARFDebugLine::LineTable::findRowInSeq(
return RowPos - Rows.begin();
}
-std::pair<uint32_t, bool> DWARFDebugLine::LineTable::lookupAddress(
- object::SectionedAddress Address,
- DILineInfoSpecifier::ApproximateLineKind LineKind) const {
+std::pair<uint32_t, bool>
+DWARFDebugLine::LineTable::lookupAddress(object::SectionedAddress Address,
+ bool ApproximateLine) const {
// Search for relocatable addresses
- std::pair<uint32_t, bool> Result = lookupAddressImpl(Address, LineKind);
+ std::pair<uint32_t, bool> Result =
+ lookupAddressImpl(Address, ApproximateLine);
if (Result.first != UnknownRowIndex ||
Address.SectionIndex == object::SectionedAddress::UndefSection)
@@ -1325,12 +1326,12 @@ std::pair<uint32_t, bool> DWARFDebugLine::LineTable::lookupAddress(
// Search for absolute addresses
Address.SectionIndex = object::SectionedAddress::UndefSection;
- return lookupAddressImpl(Address, LineKind);
+ return lookupAddressImpl(Address, ApproximateLine);
}
-std::pair<uint32_t, bool> DWARFDebugLine::LineTable::lookupAddressImpl(
- object::SectionedAddress Address,
- DILineInfoSpecifier::ApproximateLineKind LineKind) const {
+std::pair<uint32_t, bool>
+DWARFDebugLine::LineTable::lookupAddressImpl(object::SectionedAddress Address,
+ bool ApproximateLine) const {
// First, find an instruction sequence containing the given address.
DWARFDebugLine::Sequence Sequence;
Sequence.SectionIndex = Address.SectionIndex;
@@ -1340,32 +1341,21 @@ std::pair<uint32_t, bool> DWARFDebugLine::LineTable::lookupAddressImpl(
if (It == Sequences.end() || It->SectionIndex != Address.SectionIndex)
return {UnknownRowIndex, false};
- uint32_t RowIndex = UnknownRowIndex;
+ uint32_t RowIndex = findRowInSeq(*It, Address);
bool IsApproximate = false;
- if (LineKind == DILineInfoSpecifier::ApproximateLineKind::Before) {
- while (Address.Address >= It->LowPC) {
- RowIndex = findRowInSeq(*It, Address);
- if (RowIndex != UnknownRowIndex && Rows[RowIndex].Line)
+ if (ApproximateLine) {
+ uint32_t ApproxRowIndex = RowIndex;
+ while (ApproxRowIndex >= It->FirstRowIndex) {
+ if (ApproxRowIndex != UnknownRowIndex && Rows[ApproxRowIndex].Line)
break;
IsApproximate = true;
- if (RowIndex != UnknownRowIndex &&
- (Rows[RowIndex].BasicBlock | Rows[RowIndex].PrologueEnd))
+ if (ApproxRowIndex != UnknownRowIndex &&
+ (Rows[ApproxRowIndex].BasicBlock | Rows[ApproxRowIndex].PrologueEnd))
break;
- --Address.Address;
+ --ApproxRowIndex;
}
- } else if (LineKind == DILineInfoSpecifier::ApproximateLineKind::After) {
- while (Address.Address <= It->HighPC) {
- RowIndex = findRowInSeq(*It, Address);
- if (RowIndex != UnknownRowIndex && Rows[RowIndex].Line)
- break;
- IsApproximate = true;
- if (RowIndex != UnknownRowIndex &&
- (Rows[RowIndex].BasicBlock | Rows[RowIndex].EpilogueBegin))
- break;
- ++Address.Address;
- }
- } else {
- RowIndex = findRowInSeq(*It, Address);
+ if (ApproxRowIndex >= It->FirstRowIndex)
+ RowIndex = ApproxRowIndex;
}
return {RowIndex, IsApproximate};
}
@@ -1507,11 +1497,10 @@ bool DWARFDebugLine::Prologue::getFileNameByIndex(
}
bool DWARFDebugLine::LineTable::getFileLineInfoForAddress(
- object::SectionedAddress Address,
- DILineInfoSpecifier::ApproximateLineKind LineKind, const char *CompDir,
+ object::SectionedAddress Address, const char *CompDir, bool ApproximateLine,
FileLineInfoKind Kind, DILineInfo &Result) const {
// Get the index of row we're looking for in the line table.
- auto RowIndexValue = lookupAddress(Address, LineKind);
+ auto RowIndexValue = lookupAddress(Address, ApproximateLine);
uint32_t RowIndex = RowIndexValue.first;
if (RowIndex == -1U)
return false;
diff --git a/llvm/lib/DebugInfo/Symbolize/Symbolize.cpp b/llvm/lib/DebugInfo/Symbolize/Symbolize.cpp
index 6c8303bcee6ca..9d3bf6d38c0fa 100644
--- a/llvm/lib/DebugInfo/Symbolize/Symbolize.cpp
+++ b/llvm/lib/DebugInfo/Symbolize/Symbolize.cpp
@@ -73,7 +73,7 @@ LLVMSymbolizer::symbolizeCodeCommon(const T &ModuleSpecifier,
DILineInfo LineInfo = Info->symbolizeCode(
ModuleOffset,
DILineInfoSpecifier(Opts.PathStyle, Opts.PrintFunctions,
- Opts.ApproximateLineNumbers),
+ Opts.ApproximateLine),
Opts.UseSymbolTable);
if (Opts.Demangle)
LineInfo.FunctionName = DemangleName(LineInfo.FunctionName, Info);
@@ -120,7 +120,7 @@ Expected<DIInliningInfo> LLVMSymbolizer::symbolizeInlinedCodeCommon(
DIInliningInfo InlinedContext = Info->symbolizeInlinedCode(
ModuleOffset,
DILineInfoSpecifier(Opts.PathStyle, Opts.PrintFunctions,
- Opts.ApproximateLineNumbers),
+ Opts.ApproximateLine),
Opts.UseSymbolTable);
if (Opts.Demangle) {
for (int i = 0, n = InlinedContext.getNumberOfFrames(); i < n; i++) {
diff --git a/llvm/test/tools/llvm-symbolizer/approximate-line-info.s b/llvm/test/tools/llvm-symbolizer/approximate-line-info.s
index 480d5cbed6133..54414cab816ec 100644
--- a/llvm/test/tools/llvm-symbolizer/approximate-line-info.s
+++ b/llvm/test/tools/llvm-symbolizer/approximate-line-info.s
@@ -1,30 +1,27 @@
# REQUIRES: x86-registered-target
# RUN: llvm-mc -g -filetype=obj -triple=x86_64-pc-linux %s -o %t.o
-# RUN: llvm-symbolizer --obj=%t.o 0xa | FileCheck --check-prefix=APPROX-NONE %s
-# RUN: llvm-symbolizer --obj=%t.o --approximate-line-info=before 0xa | FileCheck --check-prefix=APPROX-BEFORE %s
-# RUN: llvm-symbolizer --obj=%t.o --approximate-line-info=after 0xa | FileCheck --check-prefix=APPROX-AFTER %s
-# RUN: llvm-symbolizer --obj=%t.o --approximate-line-info=before 0xa 0x10 | FileCheck --check-prefixes=APPROX-BEFORE,NO-APPROX %s
-# RUN: llvm-symbolizer --obj=%t.o --approximate-line-info=before --verbose 0xa | FileCheck --check-prefix=APPROX-VERBOSE %s
-# RUN: llvm-symbolizer --obj=%t.o --approximate-line-info=before --output-style=JSON 0xa | FileCheck --check-prefix=APPROX-JSON %s
+# RUN: llvm-symbolizer --obj=%t.o 0xa | FileCheck --strict-whitespace --match-full-lines --check-prefix=APPROX-DISABLE %s
+# RUN: llvm-symbolizer --obj=%t.o --approximate-line 0xa | FileCheck --strict-whitespace --match-full-lines --check-prefix=APPROX-ENABLE %s
+# RUN: llvm-symbolizer --obj=%t.o --approximate-line 0xa 0x10 | FileCheck --strict-whitespace --match-full-lines --check-prefixes=APPROX-ENABLE,NO-APPROX %s
+# RUN: llvm-symbolizer --obj=%t.o --approximate-line --verbose 0xa | FileCheck --strict-whitespace --match-full-lines --check-prefix=APPROX-VERBOSE %s
+# RUN: llvm-symbolizer --obj=%t.o --approximate-line --output-style=JSON 0xa | FileCheck --strict-whitespace --match-full-lines --check-prefix=APPROX-JSON %s
-# APPROX-NONE: main
-# APPROX-NONE-NEXT: {{[/|\]+}}tmp{{[/|\]+}}test{{[/|\]+}}main.c:0:6
-# APPROX-BEFORE: main
-# APPROX-BEFORE-NEXT: {{[/|\]+}}tmp{{[/|\]+}}test{{[/|\]+}}main.c:4:6 (approximate)
-# APPROX-AFTER: main
-# APPROX-AFTER-NEXT: {{[/|\]+}}tmp{{[/|\]+}}test{{[/|\]+}}main.c:8:2 (approximate)
-# NO-APPROX: main
-# NO-APPROX-NEXT: {{[/|\]+}}tmp{{[/|\]+}}test{{[/|\]+}}main.c:8:2
+# APPROX-DISABLE:main
+# APPROX-DISABLE-NEXT:{{[/|\]+}}tmp{{[/|\]+}}test{{[/|\]+}}main.c:0:6
+# APPROX-ENABLE:main
+# APPROX-ENABLE-NEXT:{{[/|\]+}}tmp{{[/|\]+}}test{{[/|\]+}}main.c:4:6 (approximate)
+# NO-APPROX:main
+# NO-APPROX-NEXT:{{[/|\]+}}tmp{{[/|\]+}}test{{[/|\]+}}main.c:8:2
-#APPROX-VERBOSE: main
-#APPROX-VERBOSE-NEXT: Filename: /tmp/test{{[/|\]}}main.c
-#APPROX-VERBOSE-NEXT: Function start address: 0x0
-#APPROX-VERBOSE-NEXT: Line: 4
-#APPROX-VERBOSE-NEXT: Column: 6
-#APPROX-VERBOSE-NEXT: Approximate: 1
+#APPROX-VERBOSE:main
+#APPROX-VERBOSE-NEXT: Filename: /tmp/test{{[/|\]}}main.c
+#APPROX-VERBOSE-NEXT: Function start address: 0x0
+#APPROX-VERBOSE-NEXT: Line: 4
+#APPROX-VERBOSE-NEXT: Column: 6
+#APPROX-VERBOSE-NEXT: Approximate: 1
-#APPROX-JSON: [{"Address":"0xa","ModuleName":"{{.*}}{{[/|\]+}}test{{[/|\]+}}tools{{[/|\]+}}llvm-symbolizer{{[/|\]+}}Output{{[/|\]+}}approximate-line-info.s.tmp.o","Symbol":[{"Approximate":true,"Column":6,"Discriminator":0,"FileName":"{{[/|\]+}}tmp{{[/|\]+}}test{{[/|\]+}}main.c","FunctionName":"main","Line":4,"StartAddress":"0x0","StartFileName":"","StartLine":0}]}]
+#APPROX-JSON:[{"Address":"0xa","ModuleName":"{{.*}}{{[/|\]+}}test{{[/|\]+}}tools{{[/|\]+}}llvm-symbolizer{{[/|\]+}}Output{{[/|\]+}}approximate-line-info.s.tmp.o","Symbol":[{"Approximate":true,"Column":6,"Discriminator":0,"FileName":"{{[/|\]+}}tmp{{[/|\]+}}test{{[/|\]+}}main.c","FunctionName":"main","Line":4,"StartAddress":"0x0","StartFileName":"","StartLine":0}]}]
## Generated from C Code
##
diff --git a/llvm/tools/llvm-symbolizer/Opts.td b/llvm/tools/llvm-symbolizer/Opts.td
index 80ec4721c45e0..097ea17b90e9e 100644
--- a/llvm/tools/llvm-symbolizer/Opts.td
+++ b/llvm/tools/llvm-symbolizer/Opts.td
@@ -17,7 +17,7 @@ def grp_mach_o : OptionGroup<"kind">,
HelpText<"llvm-symbolizer Mach-O Specific Options">;
def addresses : F<"addresses", "Show address before line information">;
-defm approximate_line_info : Eq<"approximate-line-info","Find approximate non-zero line number information nearest to given address.">,Values<"<before/after>">;
+def approximate_line : F<"approximate-line","Show approximate non-zero line number information nearest to before the given address.">;
defm adjust_vma
: Eq<"adjust-vma", "Add specified offset to object file addresses">,
MetaVarName<"<offset>">;
diff --git a/llvm/tools/llvm-symbolizer/llvm-symbolizer.cpp b/llvm/tools/llvm-symbolizer/llvm-symbolizer.cpp
index 530dbdfd5c8b5..591bf70ea2e49 100644
--- a/llvm/tools/llvm-symbolizer/llvm-symbolizer.cpp
+++ b/llvm/tools/llvm-symbolizer/llvm-symbolizer.cpp
@@ -482,14 +482,7 @@ int llvm_symbolizer_main(int argc, char **argv, const llvm::ToolContext &) {
} else {
Opts.PathStyle = DILineInfoSpecifier::FileLineInfoKind::AbsoluteFilePath;
}
- StringRef ApproximateLineKindVal =
- Args.getLastArgValue(OPT_approximate_line_info_EQ);
- Opts.ApproximateLineNumbers =
- ApproximateLineKindVal == "before"
- ? DILineInfoSpecifier::ApproximateLineKind::Before
- : ApproximateLineKindVal == "after"
- ? DILineInfoSpecifier::ApproximateLineKind::After
- : DILineInfoSpecifier::ApproximateLineKind::None;
+ Opts.ApproximateLine = Args.hasArg(OPT_approximate_line);
Opts.DebugFileDirectory = Args.getAllArgValues(OPT_debug_file_directory_EQ);
Opts.DefaultArch = Args.getLastArgValue(OPT_default_arch_EQ).str();
Opts.Demangle = Args.hasFlag(OPT_demangle, OPT_no_demangle, !IsAddr2Line);
>From 8d9f5e6487b3498c67dc434d273cda5cd4a2d366 Mon Sep 17 00:00:00 2001
From: Amit Pandey <pandey.kumaramit2023 at gmail.com>
Date: Tue, 7 May 2024 12:34:19 +0530
Subject: [PATCH 12/14] Address review comments.
---
bolt/lib/Core/BinaryFunction.cpp | 5 +-
lld/Common/DWARF.cpp | 2 +-
llvm/docs/CommandGuide/llvm-symbolizer.rst | 11 ++---
.../llvm/DebugInfo/DWARF/DWARFDebugLine.h | 14 +++---
llvm/lib/DebugInfo/DWARF/DWARFContext.cpp | 13 +++---
llvm/lib/DebugInfo/DWARF/DWARFDebugLine.cpp | 46 ++++++++-----------
llvm/lib/DebugInfo/Symbolize/DIPrinter.cpp | 8 ++--
.../llvm-symbolizer/approximate-line-info.s | 8 ++--
.../output-style-json-code.test | 14 +++---
llvm/test/tools/llvm-symbolizer/source.ll | 2 +-
llvm/tools/llvm-symbolizer/Opts.td | 2 +-
.../tools/llvm-symbolizer/llvm-symbolizer.cpp | 2 +-
12 files changed, 60 insertions(+), 67 deletions(-)
diff --git a/bolt/lib/Core/BinaryFunction.cpp b/bolt/lib/Core/BinaryFunction.cpp
index e7e10e923249b..4f44ba0d970c0 100644
--- a/bolt/lib/Core/BinaryFunction.cpp
+++ b/bolt/lib/Core/BinaryFunction.cpp
@@ -192,9 +192,8 @@ static SMLoc findDebugLineInformationForInstructionAt(
"Cannot fit instruction debug line information into SMLoc's pointer");
SMLoc NullResult = DebugLineTableRowRef::NULL_ROW.toSMLoc();
- auto RowIndexValue = LineTable->lookupAddress(
- {Address, object::SectionedAddress::UndefSection}, false);
- uint32_t RowIndex = RowIndexValue.first;
+ uint32_t RowIndex = LineTable->lookupAddress(
+ {Address, object::SectionedAddress::UndefSection});
if (RowIndex == LineTable->UnknownRowIndex)
return NullResult;
diff --git a/lld/Common/DWARF.cpp b/lld/Common/DWARF.cpp
index fc1b6d22c1a10..2cd8ca4575dee 100644
--- a/lld/Common/DWARF.cpp
+++ b/lld/Common/DWARF.cpp
@@ -93,7 +93,7 @@ std::optional<DILineInfo> DWARFCache::getDILineInfo(uint64_t offset,
DILineInfo info;
for (const llvm::DWARFDebugLine::LineTable *lt : lineTables) {
if (lt->getFileLineInfoForAddress(
- {offset, sectionIndex}, nullptr, false,
+ {offset, sectionIndex}, nullptr,
DILineInfoSpecifier::FileLineInfoKind::AbsoluteFilePath, info))
return info;
}
diff --git a/llvm/docs/CommandGuide/llvm-symbolizer.rst b/llvm/docs/CommandGuide/llvm-symbolizer.rst
index bdf206c31b855..664c8f5cb9b95 100644
--- a/llvm/docs/CommandGuide/llvm-symbolizer.rst
+++ b/llvm/docs/CommandGuide/llvm-symbolizer.rst
@@ -224,11 +224,11 @@ OPTIONS
This can be used to perform lookups as if the object were relocated by the
offset.
-.. option:: --approximate-line
+.. option:: --skip-line-zero
- Print the approximate non-zero line number that is nearest to before an
- input address. Nearest lookup is performed by querying the line-table
- structure for an address having non-zero line information in close proximity.
+ If an address does not have an associated line number, use the last line
+ number from the current sequence in the line-table. Such lines are labeled
+ as "approximate" in the output as they may be misleading.
.. option:: --basenames, -s
@@ -384,7 +384,6 @@ OPTIONS
"ModuleName": "inlined.elf",
"Symbol": [
{
- "Approximate": false,
"Column": 18,
"Discriminator": 0,
"FileName": "/tmp/test.cpp",
@@ -395,7 +394,6 @@ OPTIONS
"StartLine": 9
},
{
- "Approximate": false,
"Column": 0,
"Discriminator": 0,
"FileName": "/tmp/test.cpp",
@@ -412,7 +410,6 @@ OPTIONS
"ModuleName": "inlined.elf",
"Symbol": [
{
- "Approximate": false,
"Column": 3,
"Discriminator": 0,
"FileName": "/tmp/test.cpp",
diff --git a/llvm/include/llvm/DebugInfo/DWARF/DWARFDebugLine.h b/llvm/include/llvm/DebugInfo/DWARF/DWARFDebugLine.h
index b8b5f1d8688f8..0b2044650e764 100644
--- a/llvm/include/llvm/DebugInfo/DWARF/DWARFDebugLine.h
+++ b/llvm/include/llvm/DebugInfo/DWARF/DWARFDebugLine.h
@@ -240,8 +240,8 @@ class DWARFDebugLine {
/// Returns the index of the row with file/line info for a given address,
/// or UnknownRowIndex if there is no such row.
- std::pair<uint32_t, bool> lookupAddress(object::SectionedAddress Address,
- bool ApproximateLine) const;
+ uint32_t lookupAddress(object::SectionedAddress Address,
+ bool *IsApproximateLine = nullptr) const;
bool lookupAddressRange(object::SectionedAddress Address, uint64_t Size,
std::vector<uint32_t> &Result) const;
@@ -268,7 +268,7 @@ class DWARFDebugLine {
/// Fills the Result argument with the file and line information
/// corresponding to Address. Returns true on success.
bool getFileLineInfoForAddress(object::SectionedAddress Address,
- const char *CompDir, bool ApproximateLine,
+ const char *CompDir,
DILineInfoSpecifier::FileLineInfoKind Kind,
DILineInfo &Result) const;
@@ -302,9 +302,8 @@ class DWARFDebugLine {
getSourceByIndex(uint64_t FileIndex,
DILineInfoSpecifier::FileLineInfoKind Kind) const;
- std::pair<uint32_t, bool>
- lookupAddressImpl(object::SectionedAddress Address,
- bool ApproximateLine) const;
+ uint32_t lookupAddressImpl(object::SectionedAddress Address,
+ bool *IsApproximateLine = nullptr) const;
bool lookupAddressRangeImpl(object::SectionedAddress Address, uint64_t Size,
std::vector<uint32_t> &Result) const;
@@ -430,6 +429,9 @@ class DWARFDebugLine {
using LineTableConstIter = LineTableMapTy::const_iterator;
LineTableMapTy LineTableMap;
+
+public:
+ inline static bool ReportApproximateLine = false;
};
} // end namespace llvm
diff --git a/llvm/lib/DebugInfo/DWARF/DWARFContext.cpp b/llvm/lib/DebugInfo/DWARF/DWARFContext.cpp
index 49fc4dd00c4fe..a672e4ab22c35 100644
--- a/llvm/lib/DebugInfo/DWARF/DWARFContext.cpp
+++ b/llvm/lib/DebugInfo/DWARF/DWARFContext.cpp
@@ -1736,6 +1736,7 @@ DILineInfo DWARFContext::getLineInfoForAddress(object::SectionedAddress Address,
if (!CU)
return Result;
+ DWARFDebugLine::ReportApproximateLine = Spec.ApproximateLine;
getFunctionNameAndStartLineForAddress(
CU, Address.Address, Spec.FNKind, Spec.FLIKind, Result.FunctionName,
Result.StartFileName, Result.StartLine, Result.StartAddress);
@@ -1743,7 +1744,7 @@ DILineInfo DWARFContext::getLineInfoForAddress(object::SectionedAddress Address,
if (const DWARFLineTable *LineTable = getLineTableForUnit(CU)) {
LineTable->getFileLineInfoForAddress(
{Address.Address, Address.SectionIndex}, CU->getCompilationDir(),
- Spec.ApproximateLine, Spec.FLIKind, Result);
+ Spec.FLIKind, Result);
}
}
@@ -1830,6 +1831,7 @@ DWARFContext::getInliningInfoForAddress(object::SectionedAddress Address,
const DWARFLineTable *LineTable = nullptr;
SmallVector<DWARFDie, 4> InlinedChain;
+ DWARFDebugLine::ReportApproximateLine = Spec.ApproximateLine;
CU->getInlinedChainForAddress(Address.Address, InlinedChain);
if (InlinedChain.size() == 0) {
// If there is no DIE for address (e.g. it is in unavailable .dwo file),
@@ -1837,10 +1839,9 @@ DWARFContext::getInliningInfoForAddress(object::SectionedAddress Address,
if (Spec.FLIKind != FileLineInfoKind::None) {
DILineInfo Frame;
LineTable = getLineTableForUnit(CU);
- if (LineTable &&
- LineTable->getFileLineInfoForAddress(
- {Address.Address, Address.SectionIndex}, CU->getCompilationDir(),
- Spec.ApproximateLine, Spec.FLIKind, Frame))
+ if (LineTable && LineTable->getFileLineInfoForAddress(
+ {Address.Address, Address.SectionIndex},
+ CU->getCompilationDir(), Spec.FLIKind, Frame))
InliningInfo.addFrame(Frame);
}
return InliningInfo;
@@ -1867,7 +1868,7 @@ DWARFContext::getInliningInfoForAddress(object::SectionedAddress Address,
if (LineTable)
LineTable->getFileLineInfoForAddress(
{Address.Address, Address.SectionIndex}, CU->getCompilationDir(),
- Spec.ApproximateLine, Spec.FLIKind, Frame);
+ Spec.FLIKind, Frame);
} else {
// Otherwise, use call file, call line and call column from
// previous DIE in inlined chain.
diff --git a/llvm/lib/DebugInfo/DWARF/DWARFDebugLine.cpp b/llvm/lib/DebugInfo/DWARF/DWARFDebugLine.cpp
index 0db77795700fa..390354aa04a94 100644
--- a/llvm/lib/DebugInfo/DWARF/DWARFDebugLine.cpp
+++ b/llvm/lib/DebugInfo/DWARF/DWARFDebugLine.cpp
@@ -1312,26 +1312,25 @@ uint32_t DWARFDebugLine::LineTable::findRowInSeq(
return RowPos - Rows.begin();
}
-std::pair<uint32_t, bool>
+uint32_t
DWARFDebugLine::LineTable::lookupAddress(object::SectionedAddress Address,
- bool ApproximateLine) const {
+ bool *IsApproximateLine) const {
// Search for relocatable addresses
- std::pair<uint32_t, bool> Result =
- lookupAddressImpl(Address, ApproximateLine);
+ uint32_t Result = lookupAddressImpl(Address, IsApproximateLine);
- if (Result.first != UnknownRowIndex ||
+ if (Result != UnknownRowIndex ||
Address.SectionIndex == object::SectionedAddress::UndefSection)
return Result;
// Search for absolute addresses
Address.SectionIndex = object::SectionedAddress::UndefSection;
- return lookupAddressImpl(Address, ApproximateLine);
+ return lookupAddressImpl(Address, IsApproximateLine);
}
-std::pair<uint32_t, bool>
+uint32_t
DWARFDebugLine::LineTable::lookupAddressImpl(object::SectionedAddress Address,
- bool ApproximateLine) const {
+ bool *IsApproximateLine) const {
// First, find an instruction sequence containing the given address.
DWARFDebugLine::Sequence Sequence;
Sequence.SectionIndex = Address.SectionIndex;
@@ -1339,25 +1338,18 @@ DWARFDebugLine::LineTable::lookupAddressImpl(object::SectionedAddress Address,
SequenceIter It = llvm::upper_bound(Sequences, Sequence,
DWARFDebugLine::Sequence::orderByHighPC);
if (It == Sequences.end() || It->SectionIndex != Address.SectionIndex)
- return {UnknownRowIndex, false};
+ return UnknownRowIndex;
uint32_t RowIndex = findRowInSeq(*It, Address);
- bool IsApproximate = false;
- if (ApproximateLine) {
- uint32_t ApproxRowIndex = RowIndex;
- while (ApproxRowIndex >= It->FirstRowIndex) {
- if (ApproxRowIndex != UnknownRowIndex && Rows[ApproxRowIndex].Line)
- break;
- IsApproximate = true;
- if (ApproxRowIndex != UnknownRowIndex &&
- (Rows[ApproxRowIndex].BasicBlock | Rows[ApproxRowIndex].PrologueEnd))
- break;
- --ApproxRowIndex;
+ if (RowIndex != UnknownRowIndex && DWARFDebugLine::ReportApproximateLine) {
+ for (uint32_t ApproxRowIndex = RowIndex;
+ ApproxRowIndex >= It->FirstRowIndex; --ApproxRowIndex) {
+ if (Rows[ApproxRowIndex].Line)
+ return ApproxRowIndex;
+ *IsApproximateLine = true;
}
- if (ApproxRowIndex >= It->FirstRowIndex)
- RowIndex = ApproxRowIndex;
}
- return {RowIndex, IsApproximate};
+ return RowIndex;
}
bool DWARFDebugLine::LineTable::lookupAddressRange(
@@ -1497,11 +1489,11 @@ bool DWARFDebugLine::Prologue::getFileNameByIndex(
}
bool DWARFDebugLine::LineTable::getFileLineInfoForAddress(
- object::SectionedAddress Address, const char *CompDir, bool ApproximateLine,
+ object::SectionedAddress Address, const char *CompDir,
FileLineInfoKind Kind, DILineInfo &Result) const {
+ bool IsApproximateLine = false;
// Get the index of row we're looking for in the line table.
- auto RowIndexValue = lookupAddress(Address, ApproximateLine);
- uint32_t RowIndex = RowIndexValue.first;
+ uint32_t RowIndex = lookupAddress(Address, &IsApproximateLine);
if (RowIndex == -1U)
return false;
// Take file number and line/column from the row.
@@ -1512,7 +1504,7 @@ bool DWARFDebugLine::LineTable::getFileLineInfoForAddress(
Result.Column = Row.Column;
Result.Discriminator = Row.Discriminator;
Result.Source = getSourceByIndex(Row.File, Kind);
- Result.IsApproximatedLine = RowIndexValue.second;
+ Result.IsApproximatedLine = IsApproximateLine;
return true;
}
diff --git a/llvm/lib/DebugInfo/Symbolize/DIPrinter.cpp b/llvm/lib/DebugInfo/Symbolize/DIPrinter.cpp
index bce29d1e18a7d..736bd29599523 100644
--- a/llvm/lib/DebugInfo/Symbolize/DIPrinter.cpp
+++ b/llvm/lib/DebugInfo/Symbolize/DIPrinter.cpp
@@ -299,7 +299,7 @@ static json::Object toJSON(const Request &Request, StringRef ErrorMsg = "") {
}
static json::Object toJSON(const DILineInfo &LineInfo) {
- return json::Object(
+ json::Object obj = json::Object(
{{"FunctionName", LineInfo.FunctionName != DILineInfo::BadString
? LineInfo.FunctionName
: ""},
@@ -313,8 +313,10 @@ static json::Object toJSON(const DILineInfo &LineInfo) {
LineInfo.FileName != DILineInfo::BadString ? LineInfo.FileName : ""},
{"Line", LineInfo.Line},
{"Column", LineInfo.Column},
- {"Discriminator", LineInfo.Discriminator},
- {"Approximate", LineInfo.IsApproximatedLine}});
+ {"Discriminator", LineInfo.Discriminator}});
+ if (LineInfo.IsApproximatedLine)
+ obj.insert({"Approximate", LineInfo.IsApproximatedLine});
+ return obj;
}
void JSONPrinter::print(const Request &Request, const DILineInfo &Info) {
diff --git a/llvm/test/tools/llvm-symbolizer/approximate-line-info.s b/llvm/test/tools/llvm-symbolizer/approximate-line-info.s
index 54414cab816ec..dacc04b6e9740 100644
--- a/llvm/test/tools/llvm-symbolizer/approximate-line-info.s
+++ b/llvm/test/tools/llvm-symbolizer/approximate-line-info.s
@@ -2,10 +2,10 @@
# RUN: llvm-mc -g -filetype=obj -triple=x86_64-pc-linux %s -o %t.o
# RUN: llvm-symbolizer --obj=%t.o 0xa | FileCheck --strict-whitespace --match-full-lines --check-prefix=APPROX-DISABLE %s
-# RUN: llvm-symbolizer --obj=%t.o --approximate-line 0xa | FileCheck --strict-whitespace --match-full-lines --check-prefix=APPROX-ENABLE %s
-# RUN: llvm-symbolizer --obj=%t.o --approximate-line 0xa 0x10 | FileCheck --strict-whitespace --match-full-lines --check-prefixes=APPROX-ENABLE,NO-APPROX %s
-# RUN: llvm-symbolizer --obj=%t.o --approximate-line --verbose 0xa | FileCheck --strict-whitespace --match-full-lines --check-prefix=APPROX-VERBOSE %s
-# RUN: llvm-symbolizer --obj=%t.o --approximate-line --output-style=JSON 0xa | FileCheck --strict-whitespace --match-full-lines --check-prefix=APPROX-JSON %s
+# RUN: llvm-symbolizer --obj=%t.o --skip-line-zero 0xa | FileCheck --strict-whitespace --match-full-lines --check-prefix=APPROX-ENABLE %s
+# RUN: llvm-symbolizer --obj=%t.o --skip-line-zero 0xa 0x10 | FileCheck --strict-whitespace --match-full-lines --check-prefixes=APPROX-ENABLE,NO-APPROX %s
+# RUN: llvm-symbolizer --obj=%t.o --skip-line-zero --verbose 0xa | FileCheck --strict-whitespace --match-full-lines --check-prefix=APPROX-VERBOSE %s
+# RUN: llvm-symbolizer --obj=%t.o --skip-line-zero --output-style=JSON 0xa | FileCheck --strict-whitespace --match-full-lines --check-prefix=APPROX-JSON %s
# APPROX-DISABLE:main
# APPROX-DISABLE-NEXT:{{[/|\]+}}tmp{{[/|\]+}}test{{[/|\]+}}main.c:0:6
diff --git a/llvm/test/tools/llvm-symbolizer/output-style-json-code.test b/llvm/test/tools/llvm-symbolizer/output-style-json-code.test
index d6410eeae2201..0e0e61c0bf119 100644
--- a/llvm/test/tools/llvm-symbolizer/output-style-json-code.test
+++ b/llvm/test/tools/llvm-symbolizer/output-style-json-code.test
@@ -12,12 +12,12 @@
## Expected a list with one empty object with default values.
# RUN: llvm-symbolizer --output-style=JSON -e %p/Inputs/addr.exe 0x10000000 | \
# RUN: FileCheck %s --check-prefix=NOT-FOUND --strict-whitespace --match-full-lines --implicit-check-not={{.}}
-# NOT-FOUND:[{"Address":"0x10000000","ModuleName":"{{.*}}/Inputs/addr.exe","Symbol":[{"Approximate":false,"Column":0,"Discriminator":0,"FileName":"","FunctionName":"","Line":0,"StartAddress":"","StartFileName":"","StartLine":0}]}]
+# NOT-FOUND:[{"Address":"0x10000000","ModuleName":"{{.*}}/Inputs/addr.exe","Symbol":[{"Column":0,"Discriminator":0,"FileName":"","FunctionName":"","Line":0,"StartAddress":"","StartFileName":"","StartLine":0}]}]
## Check a non-zero discriminator.
# RUN: llvm-symbolizer --output-style=JSON --obj=%p/Inputs/discrim 0x400575 | \
# RUN: FileCheck %s --check-prefix=DISCRIM --strict-whitespace --match-full-lines --implicit-check-not={{.}}
-# DISCRIM:[{"Address":"0x400575","ModuleName":"{{.*}}/Inputs/discrim","Symbol":[{"Approximate":false,"Column":17,"Discriminator":2,"FileName":"/tmp{{/|\\\\}}discrim.c","FunctionName":"foo","Line":5,"StartAddress":"0x400560","StartFileName":"/tmp{{/|\\\\}}discrim.c","StartLine":4}]}]
+# DISCRIM:[{"Address":"0x400575","ModuleName":"{{.*}}/Inputs/discrim","Symbol":[{"Column":17,"Discriminator":2,"FileName":"/tmp{{/|\\\\}}discrim.c","FunctionName":"foo","Line":5,"StartAddress":"0x400560","StartFileName":"/tmp{{/|\\\\}}discrim.c","StartLine":4}]}]
## In case of stdin input the output will contain a single JSON object for each input string.
@@ -27,7 +27,7 @@
## Invalid first argument before any valid one.
# NO-INLINES:{"Loc":[],"ModuleName":"{{.*}}/Inputs/addr.exe","SymName":"something"}
## Resolve valid address.
-# NO-INLINES-NEXT:{"Address":"0x40054d","ModuleName":"{{.*}}/Inputs/addr.exe","Symbol":[{"Approximate":false,"Column":3,"Discriminator":0,"FileName":"/tmp{{/|\\\\}}x.c","FunctionName":"main","Line":3,"StartAddress":"0x400540","StartFileName":"/tmp{{/|\\\\}}x.c","StartLine":2}]}
+# NO-INLINES-NEXT:{"Address":"0x40054d","ModuleName":"{{.*}}/Inputs/addr.exe","Symbol":[{"Column":3,"Discriminator":0,"FileName":"/tmp{{/|\\\\}}x.c","FunctionName":"main","Line":3,"StartAddress":"0x400540","StartFileName":"/tmp{{/|\\\\}}x.c","StartLine":2}]}
## Invalid argument after a valid one.
# NO-INLINES-NEXT:{"Loc":[],"ModuleName":"{{.*}}/Inputs/addr.exe","SymName":"some"}
@@ -37,7 +37,7 @@
## Invalid first argument before any valid one.
# INLINE:{"Loc":[],"ModuleName":"{{.*}}/Inputs/addr.exe","SymName":"something"}
## Resolve valid address.
-# INLINE-NEXT:{"Address":"0x40054d","ModuleName":"{{.*}}/Inputs/addr.exe","Symbol":[{"Approximate":false,"Column":3,"Discriminator":0,"FileName":"/tmp{{/|\\\\}}x.c","FunctionName":"inctwo","Line":3,"StartAddress":"0x400540","StartFileName":"/tmp{{/|\\\\}}x.c","StartLine":2},{"Approximate":false,"Column":0,"Discriminator":0,"FileName":"/tmp{{/|\\\\}}x.c","FunctionName":"inc","Line":7,"StartAddress":"0x400540","StartFileName":"/tmp{{/|\\\\}}x.c","StartLine":6},{"Approximate":false,"Column":0,"Discriminator":0,"FileName":"/tmp{{/|\\\\}}x.c","FunctionName":"main","Line":14,"StartAddress":"0x400540","StartFileName":"/tmp{{/|\\\\}}x.c","StartLine":12}]}
+# INLINE-NEXT:{"Address":"0x40054d","ModuleName":"{{.*}}/Inputs/addr.exe","Symbol":[{"Column":3,"Discriminator":0,"FileName":"/tmp{{/|\\\\}}x.c","FunctionName":"inctwo","Line":3,"StartAddress":"0x400540","StartFileName":"/tmp{{/|\\\\}}x.c","StartLine":2},{"Column":0,"Discriminator":0,"FileName":"/tmp{{/|\\\\}}x.c","FunctionName":"inc","Line":7,"StartAddress":"0x400540","StartFileName":"/tmp{{/|\\\\}}x.c","StartLine":6},{"Column":0,"Discriminator":0,"FileName":"/tmp{{/|\\\\}}x.c","FunctionName":"main","Line":14,"StartAddress":"0x400540","StartFileName":"/tmp{{/|\\\\}}x.c","StartLine":12}]}
## Invalid argument after a valid one.
# INLINE-NEXT:{"Loc":[],"ModuleName":"{{.*}}/Inputs/addr.exe","SymName":"some"}
@@ -48,7 +48,7 @@
## Invalid first argument before any valid one.
# INLINE-A2L:{"Loc":[],"ModuleName":"{{.*}}/Inputs/addr.exe","SymName":"something"}
## Resolve valid address.
-# INLINE-A2L-NEXT:{"Address":"0x40054d","ModuleName":"{{.*}}/Inputs/addr.exe","Symbol":[{"Approximate":false,"Column":3,"Discriminator":0,"FileName":"/tmp{{/|\\\\}}x.c","FunctionName":"inctwo","Line":3,"StartAddress":"0x400540","StartFileName":"/tmp{{/|\\\\}}x.c","StartLine":2},{"Approximate":false,"Column":0,"Discriminator":0,"FileName":"/tmp{{/|\\\\}}x.c","FunctionName":"inc","Line":7,"StartAddress":"0x400540","StartFileName":"/tmp{{/|\\\\}}x.c","StartLine":6},{"Approximate":false,"Column":0,"Discriminator":0,"FileName":"/tmp{{/|\\\\}}x.c","FunctionName":"main","Line":14,"StartAddress":"0x400540","StartFileName":"/tmp{{/|\\\\}}x.c","StartLine":12}]}
+# INLINE-A2L-NEXT:{"Address":"0x40054d","ModuleName":"{{.*}}/Inputs/addr.exe","Symbol":[{"Column":3,"Discriminator":0,"FileName":"/tmp{{/|\\\\}}x.c","FunctionName":"inctwo","Line":3,"StartAddress":"0x400540","StartFileName":"/tmp{{/|\\\\}}x.c","StartLine":2},{"Column":0,"Discriminator":0,"FileName":"/tmp{{/|\\\\}}x.c","FunctionName":"inc","Line":7,"StartAddress":"0x400540","StartFileName":"/tmp{{/|\\\\}}x.c","StartLine":6},{"Column":0,"Discriminator":0,"FileName":"/tmp{{/|\\\\}}x.c","FunctionName":"main","Line":14,"StartAddress":"0x400540","StartFileName":"/tmp{{/|\\\\}}x.c","StartLine":12}]}
## Invalid argument after a valid one.
# INLINE-A2L:{"Loc":[],"ModuleName":"{{.*}}/Inputs/addr.exe","SymName":"some"}
@@ -58,11 +58,11 @@
## Invalid first argument before any valid one.
# NO-FUNC-A2L:{"Loc":[],"ModuleName":"{{.*}}/Inputs/addr.exe","SymName":"something"}
## Resolve valid address.
-# NO-FUNC-A2L-NEXT:{"Address":"0x40054d","ModuleName":"{{.*}}/Inputs/addr.exe","Symbol":[{"Approximate":false,"Column":3,"Discriminator":0,"FileName":"/tmp{{/|\\\\}}x.c","FunctionName":"","Line":3,"StartAddress":"0x400540","StartFileName":"/tmp{{/|\\\\}}x.c","StartLine":2},{"Approximate":false,"Column":0,"Discriminator":0,"FileName":"/tmp{{/|\\\\}}x.c","FunctionName":"","Line":7,"StartAddress":"0x400540","StartFileName":"/tmp{{/|\\\\}}x.c","StartLine":6},{"Approximate":false,"Column":0,"Discriminator":0,"FileName":"/tmp{{/|\\\\}}x.c","FunctionName":"","Line":14,"StartAddress":"0x400540","StartFileName":"/tmp{{/|\\\\}}x.c","StartLine":12}]}
+# NO-FUNC-A2L-NEXT:{"Address":"0x40054d","ModuleName":"{{.*}}/Inputs/addr.exe","Symbol":[{"Column":3,"Discriminator":0,"FileName":"/tmp{{/|\\\\}}x.c","FunctionName":"","Line":3,"StartAddress":"0x400540","StartFileName":"/tmp{{/|\\\\}}x.c","StartLine":2},{"Column":0,"Discriminator":0,"FileName":"/tmp{{/|\\\\}}x.c","FunctionName":"","Line":7,"StartAddress":"0x400540","StartFileName":"/tmp{{/|\\\\}}x.c","StartLine":6},{"Column":0,"Discriminator":0,"FileName":"/tmp{{/|\\\\}}x.c","FunctionName":"","Line":14,"StartAddress":"0x400540","StartFileName":"/tmp{{/|\\\\}}x.c","StartLine":12}]}
## Invalid argument after a valid one.
# NO-FUNC-A2L-NEXT:{"Loc":[],"ModuleName":"{{.*}}/Inputs/addr.exe","SymName":"some"}
## When a module offset is specified by a symbol, more than one source location can be found.
# RUN: llvm-symbolizer --output-style=JSON --no-inlines -e %p/Inputs/symbols.so "static_func" | \
# RUN: FileCheck %s --check-prefix=MULTIPLE --strict-whitespace --match-full-lines --implicit-check-not={{.}}
-# MULTIPLE:[{"Loc":[{"Approximate":false,"Column":24,"Discriminator":0,"FileName":"/tmp/dbginfo{{/|\\\\}}symbols.part3.c","FunctionName":"static_func","Line":4,"StartAddress":"0x121d","StartFileName":"/tmp/dbginfo{{/|\\\\}}symbols.part3.c","StartLine":4},{"Approximate":false,"Column":24,"Discriminator":0,"FileName":"/tmp/dbginfo{{/|\\\\}}symbols.part4.c","FunctionName":"static_func","Line":4,"StartAddress":"0x125f","StartFileName":"/tmp/dbginfo{{/|\\\\}}symbols.part4.c","StartLine":4}],"ModuleName":"{{.*}}Inputs/symbols.so","SymName":"static_func"}]
+# MULTIPLE:[{"Loc":[{"Column":24,"Discriminator":0,"FileName":"/tmp/dbginfo{{/|\\\\}}symbols.part3.c","FunctionName":"static_func","Line":4,"StartAddress":"0x121d","StartFileName":"/tmp/dbginfo{{/|\\\\}}symbols.part3.c","StartLine":4},{"Column":24,"Discriminator":0,"FileName":"/tmp/dbginfo{{/|\\\\}}symbols.part4.c","FunctionName":"static_func","Line":4,"StartAddress":"0x125f","StartFileName":"/tmp/dbginfo{{/|\\\\}}symbols.part4.c","StartLine":4}],"ModuleName":"{{.*}}Inputs/symbols.so","SymName":"static_func"}]
diff --git a/llvm/test/tools/llvm-symbolizer/source.ll b/llvm/test/tools/llvm-symbolizer/source.ll
index 7f7072ee90b51..8a12c85812689 100644
--- a/llvm/test/tools/llvm-symbolizer/source.ll
+++ b/llvm/test/tools/llvm-symbolizer/source.ll
@@ -22,7 +22,7 @@
;; Check JSON style output.
; RUN: llvm-symbolizer --print-source-context-lines=3 --obj=%t.o 0 --output-style=JSON | \
; RUN: FileCheck %s --check-prefix=JSON --strict-whitespace --match-full-lines --implicit-check-not={{.}}
-; JSON:[{"Address":"0x0","ModuleName":"{{.*}}.o","Symbol":[{"Approximate":false,"Column":13,"Discriminator":0,"FileName":"/source.c","FunctionName":"foo","Line":3,"Source":"2 : // Line 2\n3 >: void foo() {}\n4 : // Line 4\n","StartAddress":"0x0","StartFileName":"/source.c","StartLine":3}]}]
+; JSON:[{"Address":"0x0","ModuleName":"{{.*}}.o","Symbol":[{"Column":13,"Discriminator":0,"FileName":"/source.c","FunctionName":"foo","Line":3,"Source":"2 : // Line 2\n3 >: void foo() {}\n4 : // Line 4\n","StartAddress":"0x0","StartFileName":"/source.c","StartLine":3}]}]
;; Generated from the following source:
;; // Line 1
diff --git a/llvm/tools/llvm-symbolizer/Opts.td b/llvm/tools/llvm-symbolizer/Opts.td
index 097ea17b90e9e..16025e2c0e2c8 100644
--- a/llvm/tools/llvm-symbolizer/Opts.td
+++ b/llvm/tools/llvm-symbolizer/Opts.td
@@ -17,7 +17,6 @@ def grp_mach_o : OptionGroup<"kind">,
HelpText<"llvm-symbolizer Mach-O Specific Options">;
def addresses : F<"addresses", "Show address before line information">;
-def approximate_line : F<"approximate-line","Show approximate non-zero line number information nearest to before the given address.">;
defm adjust_vma
: Eq<"adjust-vma", "Add specified offset to object file addresses">,
MetaVarName<"<offset>">;
@@ -56,6 +55,7 @@ def pretty_print : F<"pretty-print", "Make the output more human friendly">;
defm print_source_context_lines : Eq<"print-source-context-lines", "Print N lines of source file context">;
def relative_address : F<"relative-address", "Interpret addresses as addresses relative to the image base">;
def relativenames : F<"relativenames", "Strip the compilation directory from paths">;
+def skip_line_zero : F<"skip-line-zero","Show approximate non-zero line number information nearest to before the given address.">;
defm untag_addresses : B<"untag-addresses", "", "Remove memory tags from addresses before symbolization">;
def use_dia: F<"dia", "Use the DIA library to access symbols (Windows only)">;
def verbose : F<"verbose", "Print verbose line info">;
diff --git a/llvm/tools/llvm-symbolizer/llvm-symbolizer.cpp b/llvm/tools/llvm-symbolizer/llvm-symbolizer.cpp
index 591bf70ea2e49..23abda6842671 100644
--- a/llvm/tools/llvm-symbolizer/llvm-symbolizer.cpp
+++ b/llvm/tools/llvm-symbolizer/llvm-symbolizer.cpp
@@ -482,7 +482,7 @@ int llvm_symbolizer_main(int argc, char **argv, const llvm::ToolContext &) {
} else {
Opts.PathStyle = DILineInfoSpecifier::FileLineInfoKind::AbsoluteFilePath;
}
- Opts.ApproximateLine = Args.hasArg(OPT_approximate_line);
+ Opts.ApproximateLine = Args.hasArg(OPT_skip_line_zero);
Opts.DebugFileDirectory = Args.getAllArgValues(OPT_debug_file_directory_EQ);
Opts.DefaultArch = Args.getLastArgValue(OPT_default_arch_EQ).str();
Opts.Demangle = Args.hasFlag(OPT_demangle, OPT_no_demangle, !IsAddr2Line);
>From 44ce765e7102eb380742975c393b107ec27a04dd Mon Sep 17 00:00:00 2001
From: Amit Pandey <pandey.kumaramit2023 at gmail.com>
Date: Thu, 9 May 2024 15:47:33 +0530
Subject: [PATCH 13/14] Address Review Comments.
---
lld/Common/DWARF.cpp | 2 +-
llvm/include/llvm/DebugInfo/DIContext.h | 2 +-
.../llvm/DebugInfo/DWARF/DWARFDebugLine.h | 21 ++++++++----
llvm/lib/DebugInfo/DWARF/DWARFContext.cpp | 19 ++++++-----
llvm/lib/DebugInfo/DWARF/DWARFDebugLine.cpp | 34 +++++++++++--------
llvm/lib/DebugInfo/Symbolize/DIPrinter.cpp | 6 ++--
llvm/tools/llvm-symbolizer/Opts.td | 2 +-
7 files changed, 49 insertions(+), 37 deletions(-)
diff --git a/lld/Common/DWARF.cpp b/lld/Common/DWARF.cpp
index 2cd8ca4575dee..728021b78c414 100644
--- a/lld/Common/DWARF.cpp
+++ b/lld/Common/DWARF.cpp
@@ -93,7 +93,7 @@ std::optional<DILineInfo> DWARFCache::getDILineInfo(uint64_t offset,
DILineInfo info;
for (const llvm::DWARFDebugLine::LineTable *lt : lineTables) {
if (lt->getFileLineInfoForAddress(
- {offset, sectionIndex}, nullptr,
+ {offset, sectionIndex}, false, nullptr,
DILineInfoSpecifier::FileLineInfoKind::AbsoluteFilePath, info))
return info;
}
diff --git a/llvm/include/llvm/DebugInfo/DIContext.h b/llvm/include/llvm/DebugInfo/DIContext.h
index d075cbd1dd147..3dd96dcf1075d 100644
--- a/llvm/include/llvm/DebugInfo/DIContext.h
+++ b/llvm/include/llvm/DebugInfo/DIContext.h
@@ -51,7 +51,7 @@ struct DILineInfo {
// DWARF-specific.
uint32_t Discriminator = 0;
- bool IsApproximatedLine = 0;
+ bool IsApproximatedLine = false;
DILineInfo()
: FileName(BadString), FunctionName(BadString), StartFileName(BadString) {
}
diff --git a/llvm/include/llvm/DebugInfo/DWARF/DWARFDebugLine.h b/llvm/include/llvm/DebugInfo/DWARF/DWARFDebugLine.h
index 0b2044650e764..deb4d7f92c2c6 100644
--- a/llvm/include/llvm/DebugInfo/DWARF/DWARFDebugLine.h
+++ b/llvm/include/llvm/DebugInfo/DWARF/DWARFDebugLine.h
@@ -27,6 +27,13 @@ class raw_ostream;
class DWARFDebugLine {
public:
+ struct Approximate {
+ Approximate(bool EnableReport) : Report(EnableReport) {}
+
+ bool Report = false;
+ bool IsApproximateLine = false;
+ };
+
struct FileNameEntry {
FileNameEntry() = default;
@@ -240,8 +247,9 @@ class DWARFDebugLine {
/// Returns the index of the row with file/line info for a given address,
/// or UnknownRowIndex if there is no such row.
- uint32_t lookupAddress(object::SectionedAddress Address,
- bool *IsApproximateLine = nullptr) const;
+ uint32_t
+ lookupAddress(object::SectionedAddress Address,
+ DWARFDebugLine::Approximate *Approximation = nullptr) const;
bool lookupAddressRange(object::SectionedAddress Address, uint64_t Size,
std::vector<uint32_t> &Result) const;
@@ -268,6 +276,7 @@ class DWARFDebugLine {
/// Fills the Result argument with the file and line information
/// corresponding to Address. Returns true on success.
bool getFileLineInfoForAddress(object::SectionedAddress Address,
+ DWARFDebugLine::Approximate Approximation,
const char *CompDir,
DILineInfoSpecifier::FileLineInfoKind Kind,
DILineInfo &Result) const;
@@ -302,8 +311,9 @@ class DWARFDebugLine {
getSourceByIndex(uint64_t FileIndex,
DILineInfoSpecifier::FileLineInfoKind Kind) const;
- uint32_t lookupAddressImpl(object::SectionedAddress Address,
- bool *IsApproximateLine = nullptr) const;
+ uint32_t
+ lookupAddressImpl(object::SectionedAddress Address,
+ DWARFDebugLine::Approximate *Approximate = nullptr) const;
bool lookupAddressRangeImpl(object::SectionedAddress Address, uint64_t Size,
std::vector<uint32_t> &Result) const;
@@ -429,9 +439,6 @@ class DWARFDebugLine {
using LineTableConstIter = LineTableMapTy::const_iterator;
LineTableMapTy LineTableMap;
-
-public:
- inline static bool ReportApproximateLine = false;
};
} // end namespace llvm
diff --git a/llvm/lib/DebugInfo/DWARF/DWARFContext.cpp b/llvm/lib/DebugInfo/DWARF/DWARFContext.cpp
index a672e4ab22c35..702119cd973e0 100644
--- a/llvm/lib/DebugInfo/DWARF/DWARFContext.cpp
+++ b/llvm/lib/DebugInfo/DWARF/DWARFContext.cpp
@@ -1736,15 +1736,15 @@ DILineInfo DWARFContext::getLineInfoForAddress(object::SectionedAddress Address,
if (!CU)
return Result;
- DWARFDebugLine::ReportApproximateLine = Spec.ApproximateLine;
+ DWARFDebugLine::Approximate Approximation(Spec.ApproximateLine);
getFunctionNameAndStartLineForAddress(
CU, Address.Address, Spec.FNKind, Spec.FLIKind, Result.FunctionName,
Result.StartFileName, Result.StartLine, Result.StartAddress);
if (Spec.FLIKind != FileLineInfoKind::None) {
if (const DWARFLineTable *LineTable = getLineTableForUnit(CU)) {
LineTable->getFileLineInfoForAddress(
- {Address.Address, Address.SectionIndex}, CU->getCompilationDir(),
- Spec.FLIKind, Result);
+ {Address.Address, Address.SectionIndex}, Approximation,
+ CU->getCompilationDir(), Spec.FLIKind, Result);
}
}
@@ -1831,7 +1831,7 @@ DWARFContext::getInliningInfoForAddress(object::SectionedAddress Address,
const DWARFLineTable *LineTable = nullptr;
SmallVector<DWARFDie, 4> InlinedChain;
- DWARFDebugLine::ReportApproximateLine = Spec.ApproximateLine;
+ DWARFDebugLine::Approximate Approximation(Spec.ApproximateLine);
CU->getInlinedChainForAddress(Address.Address, InlinedChain);
if (InlinedChain.size() == 0) {
// If there is no DIE for address (e.g. it is in unavailable .dwo file),
@@ -1839,9 +1839,10 @@ DWARFContext::getInliningInfoForAddress(object::SectionedAddress Address,
if (Spec.FLIKind != FileLineInfoKind::None) {
DILineInfo Frame;
LineTable = getLineTableForUnit(CU);
- if (LineTable && LineTable->getFileLineInfoForAddress(
- {Address.Address, Address.SectionIndex},
- CU->getCompilationDir(), Spec.FLIKind, Frame))
+ if (LineTable &&
+ LineTable->getFileLineInfoForAddress(
+ {Address.Address, Address.SectionIndex}, Approximation,
+ CU->getCompilationDir(), Spec.FLIKind, Frame))
InliningInfo.addFrame(Frame);
}
return InliningInfo;
@@ -1867,8 +1868,8 @@ DWARFContext::getInliningInfoForAddress(object::SectionedAddress Address,
// For the topmost routine, get file/line info from line table.
if (LineTable)
LineTable->getFileLineInfoForAddress(
- {Address.Address, Address.SectionIndex}, CU->getCompilationDir(),
- Spec.FLIKind, Frame);
+ {Address.Address, Address.SectionIndex}, Approximation,
+ CU->getCompilationDir(), Spec.FLIKind, Frame);
} else {
// Otherwise, use call file, call line and call column from
// previous DIE in inlined chain.
diff --git a/llvm/lib/DebugInfo/DWARF/DWARFDebugLine.cpp b/llvm/lib/DebugInfo/DWARF/DWARFDebugLine.cpp
index 390354aa04a94..c15d404e7dfc2 100644
--- a/llvm/lib/DebugInfo/DWARF/DWARFDebugLine.cpp
+++ b/llvm/lib/DebugInfo/DWARF/DWARFDebugLine.cpp
@@ -1312,12 +1312,12 @@ uint32_t DWARFDebugLine::LineTable::findRowInSeq(
return RowPos - Rows.begin();
}
-uint32_t
-DWARFDebugLine::LineTable::lookupAddress(object::SectionedAddress Address,
- bool *IsApproximateLine) const {
+uint32_t DWARFDebugLine::LineTable::lookupAddress(
+ object::SectionedAddress Address,
+ DWARFDebugLine::Approximate *Approximation) const {
// Search for relocatable addresses
- uint32_t Result = lookupAddressImpl(Address, IsApproximateLine);
+ uint32_t Result = lookupAddressImpl(Address, Approximation);
if (Result != UnknownRowIndex ||
Address.SectionIndex == object::SectionedAddress::UndefSection)
@@ -1325,12 +1325,12 @@ DWARFDebugLine::LineTable::lookupAddress(object::SectionedAddress Address,
// Search for absolute addresses
Address.SectionIndex = object::SectionedAddress::UndefSection;
- return lookupAddressImpl(Address, IsApproximateLine);
+ return lookupAddressImpl(Address, Approximation);
}
-uint32_t
-DWARFDebugLine::LineTable::lookupAddressImpl(object::SectionedAddress Address,
- bool *IsApproximateLine) const {
+uint32_t DWARFDebugLine::LineTable::lookupAddressImpl(
+ object::SectionedAddress Address,
+ DWARFDebugLine::Approximate *Approximation) const {
// First, find an instruction sequence containing the given address.
DWARFDebugLine::Sequence Sequence;
Sequence.SectionIndex = Address.SectionIndex;
@@ -1341,12 +1341,17 @@ DWARFDebugLine::LineTable::lookupAddressImpl(object::SectionedAddress Address,
return UnknownRowIndex;
uint32_t RowIndex = findRowInSeq(*It, Address);
- if (RowIndex != UnknownRowIndex && DWARFDebugLine::ReportApproximateLine) {
+
+ if (RowIndex == UnknownRowIndex)
+ return RowIndex;
+
+ // Approximation will only be attempted if a valid RowIndex exists.
+ if (Approximation && Approximation->Report) {
for (uint32_t ApproxRowIndex = RowIndex;
ApproxRowIndex >= It->FirstRowIndex; --ApproxRowIndex) {
if (Rows[ApproxRowIndex].Line)
return ApproxRowIndex;
- *IsApproximateLine = true;
+ Approximation->IsApproximateLine = true;
}
}
return RowIndex;
@@ -1489,11 +1494,10 @@ bool DWARFDebugLine::Prologue::getFileNameByIndex(
}
bool DWARFDebugLine::LineTable::getFileLineInfoForAddress(
- object::SectionedAddress Address, const char *CompDir,
- FileLineInfoKind Kind, DILineInfo &Result) const {
- bool IsApproximateLine = false;
+ object::SectionedAddress Address, DWARFDebugLine::Approximate Approximation,
+ const char *CompDir, FileLineInfoKind Kind, DILineInfo &Result) const {
// Get the index of row we're looking for in the line table.
- uint32_t RowIndex = lookupAddress(Address, &IsApproximateLine);
+ uint32_t RowIndex = lookupAddress(Address, &Approximation);
if (RowIndex == -1U)
return false;
// Take file number and line/column from the row.
@@ -1504,7 +1508,7 @@ bool DWARFDebugLine::LineTable::getFileLineInfoForAddress(
Result.Column = Row.Column;
Result.Discriminator = Row.Discriminator;
Result.Source = getSourceByIndex(Row.File, Kind);
- Result.IsApproximatedLine = IsApproximateLine;
+ Result.IsApproximatedLine = Approximation.IsApproximateLine;
return true;
}
diff --git a/llvm/lib/DebugInfo/Symbolize/DIPrinter.cpp b/llvm/lib/DebugInfo/Symbolize/DIPrinter.cpp
index 736bd29599523..74777d9ca3e04 100644
--- a/llvm/lib/DebugInfo/Symbolize/DIPrinter.cpp
+++ b/llvm/lib/DebugInfo/Symbolize/DIPrinter.cpp
@@ -299,7 +299,7 @@ static json::Object toJSON(const Request &Request, StringRef ErrorMsg = "") {
}
static json::Object toJSON(const DILineInfo &LineInfo) {
- json::Object obj = json::Object(
+ json::Object Obj = json::Object(
{{"FunctionName", LineInfo.FunctionName != DILineInfo::BadString
? LineInfo.FunctionName
: ""},
@@ -315,8 +315,8 @@ static json::Object toJSON(const DILineInfo &LineInfo) {
{"Column", LineInfo.Column},
{"Discriminator", LineInfo.Discriminator}});
if (LineInfo.IsApproximatedLine)
- obj.insert({"Approximate", LineInfo.IsApproximatedLine});
- return obj;
+ Obj.insert({"Approximate", LineInfo.IsApproximatedLine});
+ return Obj;
}
void JSONPrinter::print(const Request &Request, const DILineInfo &Info) {
diff --git a/llvm/tools/llvm-symbolizer/Opts.td b/llvm/tools/llvm-symbolizer/Opts.td
index 16025e2c0e2c8..648aa63db4b4a 100644
--- a/llvm/tools/llvm-symbolizer/Opts.td
+++ b/llvm/tools/llvm-symbolizer/Opts.td
@@ -55,7 +55,7 @@ def pretty_print : F<"pretty-print", "Make the output more human friendly">;
defm print_source_context_lines : Eq<"print-source-context-lines", "Print N lines of source file context">;
def relative_address : F<"relative-address", "Interpret addresses as addresses relative to the image base">;
def relativenames : F<"relativenames", "Strip the compilation directory from paths">;
-def skip_line_zero : F<"skip-line-zero","Show approximate non-zero line number information nearest to before the given address.">;
+def skip_line_zero : F<"skip-line-zero","If an address does not have an associated line number, use the last line number from the current sequence in the line-table.">;
defm untag_addresses : B<"untag-addresses", "", "Remove memory tags from addresses before symbolization">;
def use_dia: F<"dia", "Use the DIA library to access symbols (Windows only)">;
def verbose : F<"verbose", "Print verbose line info">;
>From 760cf1255f3a5f9b29fd66861c1bace28374f156 Mon Sep 17 00:00:00 2001
From: Amit Pandey <pandey.kumaramit2023 at gmail.com>
Date: Wed, 15 May 2024 12:10:41 +0530
Subject: [PATCH 14/14] Address Comments.
1. Add approximate-line-handcrafted.s test case.
---
llvm/docs/CommandGuide/llvm-symbolizer.rst | 2 +-
llvm/lib/DebugInfo/DWARF/DWARFDebugLine.cpp | 3 +
...ne-info.s => approximate-line-generated.s} | 2 +-
.../approximate-line-handcrafted.s | 233 ++++++++++++++++++
4 files changed, 238 insertions(+), 2 deletions(-)
rename llvm/test/tools/llvm-symbolizer/{approximate-line-info.s => approximate-line-generated.s} (96%)
create mode 100644 llvm/test/tools/llvm-symbolizer/approximate-line-handcrafted.s
diff --git a/llvm/docs/CommandGuide/llvm-symbolizer.rst b/llvm/docs/CommandGuide/llvm-symbolizer.rst
index 664c8f5cb9b95..31d12ebd28e4b 100644
--- a/llvm/docs/CommandGuide/llvm-symbolizer.rst
+++ b/llvm/docs/CommandGuide/llvm-symbolizer.rst
@@ -211,7 +211,7 @@ Example 8 - Addresses having approximate line info:
.. code-block:: console
- $ llvm-symbolizer --obj=test.elf --approximate-line 0xa
+ $ llvm-symbolizer --obj=test.elf --skip-line-zero 0xa
main
/tmp/test/main.c:4:6 (approximate)
diff --git a/llvm/lib/DebugInfo/DWARF/DWARFDebugLine.cpp b/llvm/lib/DebugInfo/DWARF/DWARFDebugLine.cpp
index c15d404e7dfc2..317c8f9b8b274 100644
--- a/llvm/lib/DebugInfo/DWARF/DWARFDebugLine.cpp
+++ b/llvm/lib/DebugInfo/DWARF/DWARFDebugLine.cpp
@@ -1347,12 +1347,15 @@ uint32_t DWARFDebugLine::LineTable::lookupAddressImpl(
// Approximation will only be attempted if a valid RowIndex exists.
if (Approximation && Approximation->Report) {
+ // Approximation Loop
for (uint32_t ApproxRowIndex = RowIndex;
ApproxRowIndex >= It->FirstRowIndex; --ApproxRowIndex) {
if (Rows[ApproxRowIndex].Line)
return ApproxRowIndex;
Approximation->IsApproximateLine = true;
}
+ // Approximation Loop fails to find the valid ApproxRowIndex
+ Approximation->IsApproximateLine = false;
}
return RowIndex;
}
diff --git a/llvm/test/tools/llvm-symbolizer/approximate-line-info.s b/llvm/test/tools/llvm-symbolizer/approximate-line-generated.s
similarity index 96%
rename from llvm/test/tools/llvm-symbolizer/approximate-line-info.s
rename to llvm/test/tools/llvm-symbolizer/approximate-line-generated.s
index dacc04b6e9740..2eb7bbc96a8aa 100644
--- a/llvm/test/tools/llvm-symbolizer/approximate-line-info.s
+++ b/llvm/test/tools/llvm-symbolizer/approximate-line-generated.s
@@ -21,7 +21,7 @@
#APPROX-VERBOSE-NEXT: Column: 6
#APPROX-VERBOSE-NEXT: Approximate: 1
-#APPROX-JSON:[{"Address":"0xa","ModuleName":"{{.*}}{{[/|\]+}}test{{[/|\]+}}tools{{[/|\]+}}llvm-symbolizer{{[/|\]+}}Output{{[/|\]+}}approximate-line-info.s.tmp.o","Symbol":[{"Approximate":true,"Column":6,"Discriminator":0,"FileName":"{{[/|\]+}}tmp{{[/|\]+}}test{{[/|\]+}}main.c","FunctionName":"main","Line":4,"StartAddress":"0x0","StartFileName":"","StartLine":0}]}]
+#APPROX-JSON:[{"Address":"0xa","ModuleName":"{{.*}}{{[/|\]+}}test{{[/|\]+}}tools{{[/|\]+}}llvm-symbolizer{{[/|\]+}}Output{{[/|\]+}}approximate-line-generated.s.tmp.o","Symbol":[{"Approximate":true,"Column":6,"Discriminator":0,"FileName":"{{[/|\]+}}tmp{{[/|\]+}}test{{[/|\]+}}main.c","FunctionName":"main","Line":4,"StartAddress":"0x0","StartFileName":"","StartLine":0}]}]
## Generated from C Code
##
diff --git a/llvm/test/tools/llvm-symbolizer/approximate-line-handcrafted.s b/llvm/test/tools/llvm-symbolizer/approximate-line-handcrafted.s
new file mode 100644
index 0000000000000..71e6db806494d
--- /dev/null
+++ b/llvm/test/tools/llvm-symbolizer/approximate-line-handcrafted.s
@@ -0,0 +1,233 @@
+# REQUIRES: x86-registered-target
+
+# RUN: clang -O3 -gline-tables-only --target=x86_64-pc-linux %s -o %t.o
+# RUN: llvm-symbolizer --obj=%t.o 0x1730 | FileCheck --strict-whitespace --match-full-lines --check-prefix=APPROX-FAIL-WITHIN-SEQ %s
+# RUN: llvm-symbolizer --obj=%t.o --skip-line-zero 0x17a0 | FileCheck --strict-whitespace --match-full-lines --check-prefix=APPROX-WITHIN-SEQ %s
+# RUN: llvm-symbolizer --obj=%t.o --skip-line-zero 0x17a0 0x1757 | FileCheck --strict-whitespace --match-full-lines --check-prefixes=APPROX-WITHIN-SEQ,NO-APPROX %s
+# RUN: llvm-symbolizer --obj=%t.o --skip-line-zero --verbose 0x17a0 | FileCheck --strict-whitespace --match-full-lines --check-prefix=APPROX-VERBOSE %s
+# RUN: llvm-symbolizer --obj=%t.o --skip-line-zero --output-style=JSON 0x17a0 | FileCheck --strict-whitespace --match-full-lines --check-prefix=APPROX-JSON %s
+
+# APPROX-FAIL-WITHIN-SEQ:main
+# APPROX-FAIL-WITHIN-SEQ-NEXT:{{[/|\]+}}tmp{{[/|\]+}}test{{[/|\]+}}main.c:0:0
+# APPROX-WITHIN-SEQ:sub
+# APPROX-WITHIN-SEQ-NEXT:{{[/|\]+}}tmp{{[/|\]+}}test{{[/|\]+}}.{{[/|\]+}}definitions.h:1:80 (approximate)
+# NO-APPROX:main
+# NO-APPROX-NEXT:{{[/|\]+}}tmp{{[/|\]+}}test{{[/|\]+}}main.c:9:3
+
+#APPROX-VERBOSE:sub
+#APPROX-VERBOSE-NEXT: Filename: /tmp/test/.{{[/|\]}}definitions.h
+#APPROX-VERBOSE-NEXT: Function start address: 0x17a0
+#APPROX-VERBOSE-NEXT: Line: 1
+#APPROX-VERBOSE-NEXT: Column: 80
+#APPROX-VERBOSE-NEXT: Approximate: 1
+
+#APPROX-JSON:[{"Address":"0x17a0","ModuleName":"{{.*}}{{[/|\]+}}test{{[/|\]+}}tools{{[/|\]+}}llvm-symbolizer{{[/|\]+}}Output{{[/|\]+}}approximate-line-handcrafted.s.tmp.o","Symbol":[{"Approximate":true,"Column":80,"Discriminator":0,"FileName":"{{[/|\]+}}tmp{{[/|\]+}}test{{[/|\]+}}.{{[/|\]+}}definitions.h","FunctionName":"sub","Line":1,"StartAddress":"0x17a0","StartFileName":"","StartLine":0}]}]
+
+## Generated from C Code
+##
+## // definitions.h
+## extern inline __attribute__((section(".def_section"))) int add(int x, int y) { return (x + y); }
+## extern inline __attribute__((section(".def_section"))) int sub(int x, int y) { return (x - y); }
+##
+## // main.c
+## include <stdio.h>
+## include "definitions.h"
+##
+## int main(void) {
+## int a = 10;
+## int b = 100;
+## printf("Addition result: %d \n", add(a, b));
+## printf("Subtraction result: %d \n", sub(a, b));
+## return 0;
+## }
+##
+## clang -S -O3 -gline-tables-only --target=x86_64-pc-linux
+##
+## The assembly generated here is modified manually.
+## Manual Edited Entry-1 : Line 78 changed to ".loc 1 0 0 is_stmt 1". Original ".loc 1 2 0 is_stmt 1"
+## Manual Edited Entry-2 : Line 98 changed to ".loc 0 0 0 is_stmt 1". Original ".loc 0 4 0 is_stmt 1"
+
+ .text
+ .file "main.c"
+ .section .def_section,"ax", at progbits
+ .globl add # -- Begin function add
+ .p2align 4, 0x90
+ .type add, at function
+add: # @add
+.Lfunc_begin0:
+ .file 0 "/tmp/test" "main.c" md5 0xd17012b9cce0f9e2899a6021bde62f2b
+ .cfi_startproc
+# %bb.0: # %entry
+ # kill: def $esi killed $esi def $rsi
+ # kill: def $edi killed $edi def $rdi
+ .file 1 "." "definitions.h" md5 0xad3977bad33342557e615dded17b720b
+ .loc 1 1 90 prologue_end # ./definitions.h:1:90
+ leal (%rdi,%rsi), %eax
+ .loc 1 1 80 is_stmt 0 # ./definitions.h:1:80
+ retq
+.Ltmp0:
+.Lfunc_end0:
+ .size add, .Lfunc_end0-add
+ .cfi_endproc
+ # -- End function
+ .globl sub # -- Begin function sub
+ .p2align 4, 0x90
+ .type sub, at function
+sub: # @sub
+.Lfunc_begin1:
+ .loc 1 0 0 is_stmt 1 # ./definitions.h:2:0
+ .cfi_startproc
+# %bb.0: # %entry
+ movl %edi, %eax
+.Ltmp1:
+ .loc 1 2 90 prologue_end # ./definitions.h:2:90
+ subl %esi, %eax
+ .loc 1 2 80 is_stmt 0 # ./definitions.h:2:80
+ retq
+.Ltmp2:
+.Lfunc_end1:
+ .size sub, .Lfunc_end1-sub
+ .cfi_endproc
+ # -- End function
+ .text
+ .globl main # -- Begin function main
+ .p2align 4, 0x90
+ .type main, at function
+main: # @main
+.Lfunc_begin2:
+ .loc 0 0 0 is_stmt 1 # main.c:4:0
+ .cfi_startproc
+# %bb.0: # %entry
+ pushq %rax
+ .cfi_def_cfa_offset 16
+.Ltmp3:
+ .loc 0 7 3 prologue_end # main.c:7:3
+ leaq .L.str(%rip), %rdi
+ movl $110, %esi
+ xorl %eax, %eax
+ callq printf at PLT
+.Ltmp4:
+ .loc 0 8 3 # main.c:8:3
+ leaq .L.str.1(%rip), %rdi
+ movl $-90, %esi
+ xorl %eax, %eax
+ callq printf at PLT
+.Ltmp5:
+ .loc 0 9 3 # main.c:9:3
+ xorl %eax, %eax
+ .loc 0 9 3 epilogue_begin is_stmt 0 # main.c:9:3
+ popq %rcx
+ .cfi_def_cfa_offset 8
+ retq
+.Ltmp6:
+.Lfunc_end2:
+ .size main, .Lfunc_end2-main
+ .cfi_endproc
+ # -- End function
+ .type .L.str, at object # @.str
+ .section .rodata.str1.1,"aMS", at progbits,1
+.L.str:
+ .asciz "Addition result: %d \n"
+ .size .L.str, 22
+
+ .type .L.str.1, at object # @.str.1
+.L.str.1:
+ .asciz "Subtraction result: %d \n"
+ .size .L.str.1, 25
+
+ .section .debug_abbrev,"", at progbits
+ .byte 1 # Abbreviation Code
+ .byte 17 # DW_TAG_compile_unit
+ .byte 0 # DW_CHILDREN_no
+ .byte 37 # DW_AT_producer
+ .byte 37 # DW_FORM_strx1
+ .byte 19 # DW_AT_language
+ .byte 5 # DW_FORM_data2
+ .byte 3 # DW_AT_name
+ .byte 37 # DW_FORM_strx1
+ .byte 114 # DW_AT_str_offsets_base
+ .byte 23 # DW_FORM_sec_offset
+ .byte 16 # DW_AT_stmt_list
+ .byte 23 # DW_FORM_sec_offset
+ .byte 27 # DW_AT_comp_dir
+ .byte 37 # DW_FORM_strx1
+ .byte 17 # DW_AT_low_pc
+ .byte 1 # DW_FORM_addr
+ .byte 85 # DW_AT_ranges
+ .byte 35 # DW_FORM_rnglistx
+ .byte 115 # DW_AT_addr_base
+ .byte 23 # DW_FORM_sec_offset
+ .byte 116 # DW_AT_rnglists_base
+ .byte 23 # DW_FORM_sec_offset
+ .byte 0 # EOM(1)
+ .byte 0 # EOM(2)
+ .byte 0 # EOM(3)
+ .section .debug_info,"", at progbits
+.Lcu_begin0:
+ .long .Ldebug_info_end0-.Ldebug_info_start0 # Length of Unit
+.Ldebug_info_start0:
+ .short 5 # DWARF version number
+ .byte 1 # DWARF Unit Type
+ .byte 8 # Address Size (in bytes)
+ .long .debug_abbrev # Offset Into Abbrev. Section
+ .byte 1 # Abbrev [1] 0xc:0x1f DW_TAG_compile_unit
+ .byte 0 # DW_AT_producer
+ .short 29 # DW_AT_language
+ .byte 1 # DW_AT_name
+ .long .Lstr_offsets_base0 # DW_AT_str_offsets_base
+ .long .Lline_table_start0 # DW_AT_stmt_list
+ .byte 2 # DW_AT_comp_dir
+ .quad 0 # DW_AT_low_pc
+ .byte 0 # DW_AT_ranges
+ .long .Laddr_table_base0 # DW_AT_addr_base
+ .long .Lrnglists_table_base0 # DW_AT_rnglists_base
+.Ldebug_info_end0:
+ .section .debug_rnglists,"", at progbits
+ .long .Ldebug_list_header_end0-.Ldebug_list_header_start0 # Length
+.Ldebug_list_header_start0:
+ .short 5 # Version
+ .byte 8 # Address size
+ .byte 0 # Segment selector size
+ .long 1 # Offset entry count
+.Lrnglists_table_base0:
+ .long .Ldebug_ranges0-.Lrnglists_table_base0
+.Ldebug_ranges0:
+ .byte 3 # DW_RLE_startx_length
+ .byte 0 # start index
+ .uleb128 .Lfunc_end1-.Lfunc_begin0 # length
+ .byte 3 # DW_RLE_startx_length
+ .byte 1 # start index
+ .uleb128 .Lfunc_end2-.Lfunc_begin2 # length
+ .byte 0 # DW_RLE_end_of_list
+.Ldebug_list_header_end0:
+ .section .debug_str_offsets,"", at progbits
+ .long 16 # Length of String Offsets Set
+ .short 5
+ .short 0
+.Lstr_offsets_base0:
+ .section .debug_str,"MS", at progbits,1
+.Linfo_string0:
+ .asciz "clang version 19.0.0git (git at github.com:ampandey-1995/llvm-project.git b93be88806ad3851d4f0dca37c7c5ca7f3e92654)" # string offset=0
+.Linfo_string1:
+ .asciz "main.c" # string offset=113
+.Linfo_string2:
+ .asciz "/tmp/test" # string offset=120
+ .section .debug_str_offsets,"", at progbits
+ .long .Linfo_string0
+ .long .Linfo_string1
+ .long .Linfo_string2
+ .section .debug_addr,"", at progbits
+ .long .Ldebug_addr_end0-.Ldebug_addr_start0 # Length of contribution
+.Ldebug_addr_start0:
+ .short 5 # DWARF version number
+ .byte 8 # Address size
+ .byte 0 # Segment selector size
+.Laddr_table_base0:
+ .quad .Lfunc_begin0
+ .quad .Lfunc_begin2
+.Ldebug_addr_end0:
+ .ident "clang version 19.0.0git (git at github.com:ampandey-1995/llvm-project.git b93be88806ad3851d4f0dca37c7c5ca7f3e92654)"
+ .section ".note.GNU-stack","", at progbits
+ .addrsig
+ .section .debug_line,"", at progbits
+.Lline_table_start0:
More information about the llvm-commits
mailing list