Rebase
Created using spr 1.3.5
diff --git a/llvm/lib/DebugInfo/DWARF/DWARFDebugLine.cpp b/llvm/lib/DebugInfo/DWARF/DWARFDebugLine.cpp
index 572628f..622e7a3 100644
--- a/llvm/lib/DebugInfo/DWARF/DWARFDebugLine.cpp
+++ b/llvm/lib/DebugInfo/DWARF/DWARFDebugLine.cpp
@@ -1386,9 +1386,10 @@
FirstRowIndex = findRowInSeq(CurSeq, Address);
// Figure out the last row in the range.
+ // end_sequence tags can be at EndAddr
uint32_t LastRowIndex =
- findRowInSeq(CurSeq, {EndAddr - 1, Address.SectionIndex});
- if (LastRowIndex == UnknownRowIndex)
+ findRowInSeq(CurSeq, {EndAddr, Address.SectionIndex});
+ if (LastRowIndex == UnknownRowIndex || !Rows[LastRowIndex].EndSequence)
LastRowIndex = CurSeq.LastRowIndex - 1;
assert(FirstRowIndex != UnknownRowIndex);
diff --git a/llvm/lib/DebugInfo/GSYM/DwarfTransformer.cpp b/llvm/lib/DebugInfo/GSYM/DwarfTransformer.cpp
index ff6b560..947a9ce 100644
--- a/llvm/lib/DebugInfo/GSYM/DwarfTransformer.cpp
+++ b/llvm/lib/DebugInfo/GSYM/DwarfTransformer.cpp
@@ -354,6 +354,17 @@
for (uint32_t RowIndex : RowVector) {
// Take file number and line/column from the row.
const DWARFDebugLine::Row &Row = CUI.LineTable->Rows[RowIndex];
+
+ // TODO(avillega): With this conditional, functions folded by `icf`
+ // optimizations will only include 1 of all the folded functions. There is
+ // not a clear path forward to have the information of all folded functions
+ // in gsym.
+ if (Row.EndSequence) {
+ // End sequence markers are included for the last address
+ // in a function or the last contiguos address in a sequence.
+ break;
+ }
+
std::optional<uint32_t> OptFileIdx =
CUI.DWARFToGSYMFileIndex(Gsym, Row.File);
if (!OptFileIdx) {
@@ -411,7 +422,7 @@
else
Out.Report("Non-monotonically increasing addresses",
[&](raw_ostream &OS) {
- OS << "error: line table has addresses that do not "
+ OS << "warning: line table has addresses that do not "
<< "monotonically increase:\n";
for (uint32_t RowIndex2 : RowVector)
CUI.LineTable->Rows[RowIndex2].dump(OS);
@@ -424,19 +435,9 @@
auto LastLE = FI.OptLineTable->last();
if (LastLE && LastLE->File == FileIdx && LastLE->Line == Row.Line)
continue;
- // Only push a row if it isn't an end sequence. End sequence markers are
- // included for the last address in a function or the last contiguous
- // address in a sequence.
- if (Row.EndSequence) {
- // End sequence means that the next line entry could have a lower address
- // that the previous entries. So we clear the previous row so we don't
- // trigger the line table error about address that do not monotonically
- // increase.
- PrevRow = DWARFDebugLine::Row();
- } else {
- FI.OptLineTable->push(LE);
- PrevRow = Row;
- }
+
+ FI.OptLineTable->push(LE);
+ PrevRow = Row;
}
// If not line table rows were added, clear the line table so we don't encode
// on in the GSYM file.
diff --git a/llvm/test/tools/llvm-gsymutil/X86/elf-dwarf-icf.yaml b/llvm/test/tools/llvm-gsymutil/X86/elf-dwarf-icf.yaml
new file mode 100644
index 0000000..144e5ba
--- /dev/null
+++ b/llvm/test/tools/llvm-gsymutil/X86/elf-dwarf-icf.yaml
@@ -0,0 +1,563 @@
+## Test loading an ELF file with DWARF with icf (identical code folding)
+## optimizations.
+## First we make the ELF file from yaml,
+## then we convert the ELF file to GSYM, then we do lookups on the newly
+## created GSYM, and finally we dump the entire GSYM.
+##
+## The elf file corresponds to this c program:
+## int f() {
+## return 1;
+## }
+##
+## int g() {
+## return 1;
+## }
+##
+## int main() {
+## f();
+## g();
+## return 0;
+## }
+
+# RUN: yaml2obj %s -o %t
+# RUN: llvm-gsymutil --convert %t --out-file=%t.gsym 2>&1 | FileCheck %s --check-prefix=CONVERT --dump-input=always
+
+# CONVERT: Input file: {{.*\.yaml\.tmp}}
+# CONVERT: Output file (x86_64): {{.*\.yaml\.tmp\.gsym}}
+# CONVERT: Loaded 2 functions from DWARF.
+# CONVERT: Loaded 8 functions from symbol table.
+# CONVERT: Pruned 3 functions, ended with 7 total
+
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