[llvm] [llvm-gsymutil] Print one-time DWO file missing warning under --quiet flag (PR #79882)
via llvm-commits
llvm-commits at lists.llvm.org
Wed Jan 31 15:56:16 PST 2024
https://github.com/kusmour updated https://github.com/llvm/llvm-project/pull/79882
>From 1400ccbce3eabbea6d4c62e661dd8055a29f65f7 Mon Sep 17 00:00:00 2001
From: Wanyi Ye <wanyi at fb.com>
Date: Mon, 2 Oct 2023 17:50:18 -0700
Subject: [PATCH 1/2] [llvm-gsymutil] Print one-time DWO file missing warning
under --quiet flag
FileCheck test added
```
./bin/llvm-lit -sv llvm/test/tools/llvm-gsymutil/X86/dwo-warning.test
```
Manual test steps:
- Create binary with split-dwarf:
```
clang++ -g -gdwarf-4 -gsplit-dwarf main.cpp -o main_split
```
- Remane the dwo file to a different name so llvm-gsymutil can't find it
```
mv main_split-main.dwo main_split-main__.dwo
```
- Now run llvm-gsymutil conversion, it should print out warning with and without the `--quiet` flag
```
$ ./bin/llvm-gsymutil --convert=./main_split
Input file: ./main_split
Output file (x86_64): ./main_split.gsym
warning: Unable to retrieve DWO .debug_info section for main_split-main.dwo
Loaded 0 functions from DWARF.
Loaded 12 functions from symbol table.
Pruned 0 functions, ended with 12 total
```
```
$ ./bin/llvm-gsymutil --convert=./main_split --quiet
Input file: ./main_split
Output file (x86_64): ./main_split.gsym
warning: Unable to retrieve DWO .debug_info section for some object files. (Remove the --quiet flag for full output)
Pruned 0 functions, ended with 12 total
```
---
llvm/lib/DebugInfo/GSYM/DwarfTransformer.cpp | 24 +++++++++----
.../tools/llvm-gsymutil/X86/Inputs/main.cpp | 13 +++++++
.../tools/llvm-gsymutil/X86/Inputs/main_split | Bin 0 -> 19624 bytes
.../X86/Inputs/main_split-main__.dwo | Bin 0 -> 10160 bytes
.../llvm-gsymutil/X86/Inputs/main_split.gsym | Bin 0 -> 520 bytes
.../tools/llvm-gsymutil/X86/dwo-warning.test | 32 ++++++++++++++++++
6 files changed, 62 insertions(+), 7 deletions(-)
create mode 100644 llvm/test/tools/llvm-gsymutil/X86/Inputs/main.cpp
create mode 100755 llvm/test/tools/llvm-gsymutil/X86/Inputs/main_split
create mode 100644 llvm/test/tools/llvm-gsymutil/X86/Inputs/main_split-main__.dwo
create mode 100644 llvm/test/tools/llvm-gsymutil/X86/Inputs/main_split.gsym
create mode 100644 llvm/test/tools/llvm-gsymutil/X86/dwo-warning.test
diff --git a/llvm/lib/DebugInfo/GSYM/DwarfTransformer.cpp b/llvm/lib/DebugInfo/GSYM/DwarfTransformer.cpp
index 0b225376349ec..6268c7845a142 100644
--- a/llvm/lib/DebugInfo/GSYM/DwarfTransformer.cpp
+++ b/llvm/lib/DebugInfo/GSYM/DwarfTransformer.cpp
@@ -537,17 +537,27 @@ void DwarfTransformer::handleDie(raw_ostream *OS, CUInfo &CUI, DWARFDie Die) {
Error DwarfTransformer::convert(uint32_t NumThreads, raw_ostream *OS) {
size_t NumBefore = Gsym.getNumFunctionInfos();
+ std::once_flag flag;
auto getDie = [&](DWARFUnit &DwarfUnit) -> DWARFDie {
DWARFDie ReturnDie = DwarfUnit.getUnitDIE(false);
if (DwarfUnit.getDWOId()) {
DWARFUnit *DWOCU = DwarfUnit.getNonSkeletonUnitDIE(false).getDwarfUnit();
- if (OS && !DWOCU->isDWOUnit()) {
- std::string DWOName = dwarf::toString(
- DwarfUnit.getUnitDIE().find(
- {dwarf::DW_AT_dwo_name, dwarf::DW_AT_GNU_dwo_name}),
- "");
- *OS << "warning: Unable to retrieve DWO .debug_info section for "
- << DWOName << "\n";
+ if (!DWOCU->isDWOUnit()) {
+ if (OS) {
+ std::string DWOName = dwarf::toString(
+ DwarfUnit.getUnitDIE().find(
+ {dwarf::DW_AT_dwo_name, dwarf::DW_AT_GNU_dwo_name}),
+ "");
+ *OS << "warning: Unable to retrieve DWO .debug_info section for "
+ << DWOName << "\n";
+ } else {
+ std::call_once(flag, []() {
+ outs()
+ << "warning: Unable to retrieve DWO .debug_info section for "
+ "some "
+ "object files. (Remove the --quiet flag for full output)\n";
+ });
+ }
} else {
ReturnDie = DWOCU->getUnitDIE(false);
}
diff --git a/llvm/test/tools/llvm-gsymutil/X86/Inputs/main.cpp b/llvm/test/tools/llvm-gsymutil/X86/Inputs/main.cpp
new file mode 100644
index 0000000000000..4c72cdf16a232
--- /dev/null
+++ b/llvm/test/tools/llvm-gsymutil/X86/Inputs/main.cpp
@@ -0,0 +1,13 @@
+#include <iostream>
+#include <unistd.h>
+
+void foo() {
+ std::cout << "This is foo" << std::endl;
+}
+
+int main() {
+ std::cout << "hello world" << std::endl;
+ foo();
+ std::cout << "after foo" << std::endl;
+ return 0;
+}
diff --git a/llvm/test/tools/llvm-gsymutil/X86/Inputs/main_split b/llvm/test/tools/llvm-gsymutil/X86/Inputs/main_split
new file mode 100755
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diff --git a/llvm/test/tools/llvm-gsymutil/X86/Inputs/main_split-main__.dwo b/llvm/test/tools/llvm-gsymutil/X86/Inputs/main_split-main__.dwo
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diff --git a/llvm/test/tools/llvm-gsymutil/X86/Inputs/main_split.gsym b/llvm/test/tools/llvm-gsymutil/X86/Inputs/main_split.gsym
new file mode 100644
index 0000000000000000000000000000000000000000..c9e074bb3568d8f455ebc7bcf15af2940977cd79
GIT binary patch
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HcmV?d00001
diff --git a/llvm/test/tools/llvm-gsymutil/X86/dwo-warning.test b/llvm/test/tools/llvm-gsymutil/X86/dwo-warning.test
new file mode 100644
index 0000000000000..0a57c8dfe8791
--- /dev/null
+++ b/llvm/test/tools/llvm-gsymutil/X86/dwo-warning.test
@@ -0,0 +1,32 @@
+$ cat > main.cpp
+#include <iostream>
+#include <unistd.h>
+
+void foo() {
+ std::cout << "This is foo" << std::endl;
+}
+
+int main() {
+ std::cout << "hello world" << std::endl;
+ foo();
+ std::cout << "after foo" << std::endl;
+ return 0;
+}
+
+$ clang++ -g -gdwarf-4 -gsplit-dwarf main.cpp -o main_split
+$ mv main_split-main.dwo main_split-main__.dwo
+
+// RUN: llvm-gsymutil --convert=%p/Inputs/main_split | FileCheck %s --check-prefix=WARNING
+// RUN: llvm-gsymutil --convert=%p/Inputs/main_split --quiet 2>&1 | FileCheck %s --check-prefix=WARNING-QUIET
+
+// WARNING: Input file: {{.*\/main_split}}
+// WARNING: Output file (x86_64): {{.*\.gsym}}
+// WARNING: warning: Unable to retrieve DWO .debug_info section for main_split-main.dwo
+// WARNING: Loaded 0 functions from DWARF.
+// WARNING: Loaded 12 functions from symbol table.
+// WARNING: Pruned 0 functions, ended with 12 total
+
+// WARNING-QUIET: Input file: {{.*\/main_split}}
+// WARNING-QUIET: Output file (x86_64): {{.*\.gsym}}
+// WARNING-QUIET: warning: Unable to retrieve DWO .debug_info section for some object files. (Remove the --quiet flag for full output)
+// WARNING-QUIET: Pruned 0 functions, ended with 12 total
>From d03fc83745ffa967d97a0b64e1f46bfa3cdd590e Mon Sep 17 00:00:00 2001
From: Wanyi Ye <wanyi at fb.com>
Date: Wed, 31 Jan 2024 15:54:05 -0800
Subject: [PATCH 2/2] remove test binaries; use yaml instead
---
.../tools/llvm-gsymutil/X86/Inputs/main.cpp | 13 -
.../tools/llvm-gsymutil/X86/Inputs/main_split | Bin 19624 -> 0 bytes
.../X86/Inputs/main_split-main__.dwo | Bin 10160 -> 0 bytes
.../llvm-gsymutil/X86/Inputs/main_split.gsym | Bin 520 -> 0 bytes
.../tools/llvm-gsymutil/X86/dwo-warning.test | 32 -
.../test/tools/llvm-gsymutil/X86/elf-dwo.yaml | 565 ++++++++++++++++++
6 files changed, 565 insertions(+), 45 deletions(-)
delete mode 100644 llvm/test/tools/llvm-gsymutil/X86/Inputs/main.cpp
delete mode 100755 llvm/test/tools/llvm-gsymutil/X86/Inputs/main_split
delete mode 100644 llvm/test/tools/llvm-gsymutil/X86/Inputs/main_split-main__.dwo
delete mode 100644 llvm/test/tools/llvm-gsymutil/X86/Inputs/main_split.gsym
delete mode 100644 llvm/test/tools/llvm-gsymutil/X86/dwo-warning.test
create mode 100644 llvm/test/tools/llvm-gsymutil/X86/elf-dwo.yaml
diff --git a/llvm/test/tools/llvm-gsymutil/X86/Inputs/main.cpp b/llvm/test/tools/llvm-gsymutil/X86/Inputs/main.cpp
deleted file mode 100644
index 4c72cdf16a232..0000000000000
--- a/llvm/test/tools/llvm-gsymutil/X86/Inputs/main.cpp
+++ /dev/null
@@ -1,13 +0,0 @@
-#include <iostream>
-#include <unistd.h>
-
-void foo() {
- std::cout << "This is foo" << std::endl;
-}
-
-int main() {
- std::cout << "hello world" << std::endl;
- foo();
- std::cout << "after foo" << std::endl;
- return 0;
-}
diff --git a/llvm/test/tools/llvm-gsymutil/X86/Inputs/main_split b/llvm/test/tools/llvm-gsymutil/X86/Inputs/main_split
deleted file mode 100755
index a448f1bdf93b2bc247722b08d2a834e13c4bb01e..0000000000000000000000000000000000000000
GIT binary patch
literal 0
HcmV?d00001
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diff --git a/llvm/test/tools/llvm-gsymutil/X86/Inputs/main_split.gsym b/llvm/test/tools/llvm-gsymutil/X86/Inputs/main_split.gsym
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diff --git a/llvm/test/tools/llvm-gsymutil/X86/dwo-warning.test b/llvm/test/tools/llvm-gsymutil/X86/dwo-warning.test
deleted file mode 100644
index 0a57c8dfe8791..0000000000000
--- a/llvm/test/tools/llvm-gsymutil/X86/dwo-warning.test
+++ /dev/null
@@ -1,32 +0,0 @@
-$ cat > main.cpp
-#include <iostream>
-#include <unistd.h>
-
-void foo() {
- std::cout << "This is foo" << std::endl;
-}
-
-int main() {
- std::cout << "hello world" << std::endl;
- foo();
- std::cout << "after foo" << std::endl;
- return 0;
-}
-
-$ clang++ -g -gdwarf-4 -gsplit-dwarf main.cpp -o main_split
-$ mv main_split-main.dwo main_split-main__.dwo
-
-// RUN: llvm-gsymutil --convert=%p/Inputs/main_split | FileCheck %s --check-prefix=WARNING
-// RUN: llvm-gsymutil --convert=%p/Inputs/main_split --quiet 2>&1 | FileCheck %s --check-prefix=WARNING-QUIET
-
-// WARNING: Input file: {{.*\/main_split}}
-// WARNING: Output file (x86_64): {{.*\.gsym}}
-// WARNING: warning: Unable to retrieve DWO .debug_info section for main_split-main.dwo
-// WARNING: Loaded 0 functions from DWARF.
-// WARNING: Loaded 12 functions from symbol table.
-// WARNING: Pruned 0 functions, ended with 12 total
-
-// WARNING-QUIET: Input file: {{.*\/main_split}}
-// WARNING-QUIET: Output file (x86_64): {{.*\.gsym}}
-// WARNING-QUIET: warning: Unable to retrieve DWO .debug_info section for some object files. (Remove the --quiet flag for full output)
-// WARNING-QUIET: Pruned 0 functions, ended with 12 total
diff --git a/llvm/test/tools/llvm-gsymutil/X86/elf-dwo.yaml b/llvm/test/tools/llvm-gsymutil/X86/elf-dwo.yaml
new file mode 100644
index 0000000000000..109f2fe73e695
--- /dev/null
+++ b/llvm/test/tools/llvm-gsymutil/X86/elf-dwo.yaml
@@ -0,0 +1,565 @@
+## Test loading an ELF file with split DWARF.
+## First we make the ELF file and dwo file from yaml,
+## then we test converting the ELF file with and without a valid dwo
+
+## RUN: yaml2obj %s -o %t
+## RUN: llvm-gsymutil --convert=%t -o %t.gsym | FileCheck %s --check-prefix=WARNING
+## RUN: llvm-gsymutil --convert=%t -o %t.gsym --quiet | FileCheck %s --check-prefix=WARNING-QUIET
+
+## WARNING: Input file: {{.*\.yaml\.tmp}}
+## WARNING: Output file (x86_64): {{.*\.yaml\.tmp\.gsym}}
+## WARNING: warning: Unable to retrieve DWO .debug_info section for main_split-main.dwo
+## WARNING: Loaded 0 functions from DWARF.
+## WARNING: Loaded 10 functions from symbol table.
+## WARNING: Pruned 0 functions, ended with 10 total
+
+## WARNING-QUIET: Input file: {{.*\.yaml\.tmp}}
+## WARNING-QUIET: Output file (x86_64): {{.*\.yaml\.tmp\.gsym}}
+## WARNING-QUIET: warning: Unable to retrieve DWO .debug_info section for some object files. (Remove the --quiet flag for full output)
+## WARNING-QUIET: Pruned 0 functions, ended with 10 total
+
+
+
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+DWARF:
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+ - '/tmp/test_dwo'
+ - main_split-main.dwo
+...
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