Index: llvm/tools/llvm-dwarfdump/CMakeLists.txt
===================================================================
--- llvm/tools/llvm-dwarfdump/CMakeLists.txt
+++ llvm/tools/llvm-dwarfdump/CMakeLists.txt
@@ -9,6 +9,7 @@
add_llvm_tool(llvm-dwarfdump
Statistics.cpp
+ SectionsSizes.cpp
llvm-dwarfdump.cpp
)
Index: llvm/tools/llvm-dwarfdump/SectionsSizes.cpp
===================================================================
--- /dev/null
+++ llvm/tools/llvm-dwarfdump/SectionsSizes.cpp
@@ -0,0 +1,167 @@
+//===- SectionsSizes.cpp ---------------------------------------- *- C++ *-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include "llvm/DebugInfo/DIContext.h"
+#include "llvm/DebugInfo/DWARF/DWARFContext.h"
+#include "llvm/Object/ObjectFile.h"
+#include "llvm/Support/WithColor.h"
+
+#define DEBUG_TYPE "dwarfdump"
+using namespace llvm;
+using namespace object;
+
+/// Holds cumulative section sizes for an object file.
+struct SectionsSizes {
+ /// Total number of bytes of the object file.
+ /// This includes .text,.data, .bss and all .debug_* sections.
+ uint64_t TotalObjectSize = 0;
+ /// Total number of bytes of all .debug_* sections.
+ uint64_t TotalDebugSectionsSize = 0;
+ /// Total number of bytes of the .debug_info section.
+ uint64_t TotalDebugInfo = 0;
+ /// Total number of bytes of the .debug_str section.
+ uint64_t TotalDebugStr = 0;
+ /// Total number of bytes of the .debug_abbrev section.
+ uint64_t TotalDebugAbbrev = 0;
+ /// Total number of bytes of the .debug_line section.
+ uint64_t TotalDebugLine = 0;
+ /// Total number of bytes of the .debug_ranges section.
+ uint64_t TotalDebugRanges = 0;
+ /// Total number of bytes of the .debug_loc section.
+ uint64_t TotalDebugLoc = 0;
+};
+
+static void prettyPrintTheSecsSizes(const ObjectFile &Obj,
+ const SectionsSizes &Sizes,
+ raw_ostream &OS) {
+ OS << "----------------------------------------------------"
+ << "\n";
+ OS << " SECTION \t\t"
+ << " SIZE"
+ << "\n";
+ OS << "------------ \t\t ------------\n";
+
+ OS << " .debug_info \t\t " << Sizes.TotalDebugInfo << "\n";
+ OS << " .debug_str \t\t " << Sizes.TotalDebugStr << "\n";
+ OS << " .debug_abbrev \t\t " << Sizes.TotalDebugAbbrev << "\n";
+ OS << " .debug_line \t\t " << Sizes.TotalDebugLine << "\n";
+ OS << " .debug_ranges \t\t " << Sizes.TotalDebugRanges << "\n";
+ OS << " .debug_loc \t\t " << Sizes.TotalDebugLoc << "\n\n";
+ OS << " .debug_*: \t\t " << Sizes.TotalDebugSectionsSize << "\n";
+ OS << "----------------------------------------------------"
+ << "\n";
+ OS << " TOTAL: " << Sizes.TotalObjectSize << "\n";
+ OS << "----------------------------------------------------"
+ << "\n";
+}
+
+static bool isDebugInfo(StringRef SectionName) {
+ if (SectionName == ".debug_info")
+ return true;
+ return false;
+}
+
+static bool isDebugStr(StringRef SectionName) {
+ if (SectionName == ".debug_str")
+ return true;
+ return false;
+}
+
+static bool isDebugAbbrev(StringRef SectionName) {
+ if (SectionName == ".debug_abbrev")
+ return true;
+ return false;
+}
+
+static bool isDebugLine(StringRef SectionName) {
+ if (SectionName == ".debug_line")
+ return true;
+ return false;
+}
+
+static bool isDebugRanges(StringRef SectionName) {
+ if (SectionName == ".debug_ranges")
+ return true;
+ return false;
+}
+
+static bool isDebugLoc(StringRef SectionName) {
+ if (SectionName == ".debug_loc")
+ return true;
+ return false;
+}
+
+static bool isDebugSection(StringRef SectionName) {
+ if (isDebugInfo(SectionName) || isDebugStr(SectionName) ||
+ isDebugAbbrev(SectionName) || isDebugLine(SectionName) ||
+ isDebugRanges(SectionName) || isDebugLoc(SectionName))
+ return true;
+ return false;
+}
+
+static bool calculateSizes(const ObjectFile &Obj, SectionsSizes &Sizes) {
+ for (const SectionRef &Section : Obj.sections()) {
+ StringRef SectionName;
+ if (Expected<StringRef> NameOrErr = Section.getName()) {
+ SectionName = *NameOrErr;
+ } else {
+ consumeError(NameOrErr.takeError());
+ return false;
+ }
+
+ LLVM_DEBUG(dbgs() << SectionName.str() << ": " << Section.getSize());
+
+ if (Section.isBerkeleyText() || Section.isBerkeleyData() ||
+ Section.isBSS() || isDebugSection(SectionName))
+ Sizes.TotalObjectSize += Section.getSize();
+
+ if (isDebugSection(SectionName))
+ Sizes.TotalDebugSectionsSize += Section.getSize();
+
+ if (SectionName == ".debug_info") {
+ Sizes.TotalDebugInfo += Section.getSize();
+ } else if (SectionName == ".debug_str") {
+ Sizes.TotalDebugStr += Section.getSize();
+ } else if (SectionName == ".debug_abbrev") {
+ Sizes.TotalDebugAbbrev += Section.getSize();
+ } else if (SectionName == ".debug_line") {
+ Sizes.TotalDebugLine += Section.getSize();
+ } else if (SectionName == ".debug_ranges") {
+ Sizes.TotalDebugRanges += Section.getSize();
+ } else if (SectionName == ".debug_loc") {
+ Sizes.TotalDebugLoc += Section.getSize();
+ }
+ }
+
+ return true;
+}
+
+bool collectSecsSizesForObjectFile(ObjectFile &Obj, DWARFContext &DICtx,
+ Twine Filename, raw_ostream &OS) {
+ SectionsSizes Sizes;
+ if (!calculateSizes(Obj, Sizes)) {
+ WithColor::error() << " \n";
+ exit(1);
+ }
+
+ OS << "----------------------------------------------------"
+ << "\n";
+ OS << Filename.str() << ": file format " << Obj.getFileFormatName() << "\n";
+
+ uint64_t TotalCUs = 0;
+ for (const auto &CU : static_cast<DWARFContext *>(&DICtx)->compile_units()) {
+ (void)CU;
+ ++TotalCUs;
+ }
+
+ LLVM_DEBUG(dbgs() << "Total num of compile units: " << TotalCUs << "\n");
+
+ prettyPrintTheSecsSizes(Obj, Sizes, OS);
+
+ return true;
+}
Index: llvm/tools/llvm-dwarfdump/llvm-dwarfdump.cpp
===================================================================
--- llvm/tools/llvm-dwarfdump/llvm-dwarfdump.cpp
+++ llvm/tools/llvm-dwarfdump/llvm-dwarfdump.cpp
@@ -208,6 +208,10 @@
Statistics("statistics",
cl::desc("Emit JSON-formatted debug info quality metrics."),
cat(DwarfDumpCategory));
+static cl::opt<bool>
+ ShowSecSizes("show-sections-sizes",
+ cl::desc("Show the sizes of the .debug_* sections."),
+ cat(DwarfDumpCategory));
static opt<bool> Verify("verify", desc("Verify the DWARF debug info."),
cat(DwarfDumpCategory));
static opt<bool> Quiet("quiet", desc("Use with -verify to not emit to STDOUT."),
@@ -413,6 +417,9 @@
bool collectStatsForObjectFile(ObjectFile &Obj, DWARFContext &DICtx,
Twine Filename, raw_ostream &OS);
+bool collectSecsSizesForObjectFile(ObjectFile &Obj, DWARFContext &DICtx,
+ Twine Filename, raw_ostream &OS);
+
static bool dumpObjectFile(ObjectFile &Obj, DWARFContext &DICtx, Twine Filename,
raw_ostream &OS) {
logAllUnhandledErrors(DICtx.loadRegisterInfo(Obj), errs(),
@@ -635,12 +642,16 @@
return handleFile(Object, verifyObjectFile, OutputFile.os());
}))
return 1;
- } else if (Statistics)
+ } else if (Statistics) {
for (auto Object : Objects)
handleFile(Object, collectStatsForObjectFile, OutputFile.os());
- else
+ } else if (ShowSecSizes) {
+ for (auto Object : Objects)
+ handleFile(Object, collectSecsSizesForObjectFile, OutputFile.os());
+ } else {
for (auto Object : Objects)
handleFile(Object, dumpObjectFile, OutputFile.os());
+ }
return EXIT_SUCCESS;
}