[llvm] [llvm-readobj] Dump callgraph section info for ELF (PR #157499)

[James Henderson via llvm-commits]

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@@ -8094,6 +8305,76 @@ template <class ELFT> void LLVMELFDumper<ELFT>::printCGProfile() {
   }
 }
 
+template <class ELFT> void LLVMELFDumper<ELFT>::printCallGraphInfo() {
+  if (!this->processCallGraphSection() || this->FuncCGInfos.empty()) {
+    return;
+  }
+
+  auto PrintNonRelocatableFuncSymbol = [&](uint64_t FuncEntryPC) {
+    SmallVector<std::string> FuncSymNames = this->getFunctionNames(FuncEntryPC);
+    if (!FuncSymNames.empty())
+      W.printList("Names", FuncSymNames);
+    W.printHex("Address", FuncEntryPC);
+  };
+
+  std::vector<Relocation<ELFT>> Relocations;
+  const Elf_Shdr *RelocSymTab = nullptr;
+  if (this->Obj.getHeader().e_type == ELF::ET_REL)
+    this->getCallGraphRelocations(Relocations, RelocSymTab);
+
+  auto PrintRelocatableFuncSymbol = [&](uint64_t RelocOffset) {
+    auto R = llvm::find_if(Relocations, [&](const Relocation<ELFT> &R) {
+      return R.Offset == RelocOffset;
+    });
+    if (R == Relocations.end()) {
+      this->reportUniqueWarning("unknown relocation at offset " +
+                                Twine(RelocOffset));
+      return;
+    }
+    Expected<RelSymbol<ELFT>> RelSymOrErr =
+        this->getRelocationTarget(*R, RelocSymTab);
+    if (!RelSymOrErr) {
+      this->reportUniqueWarning(RelSymOrErr.takeError());
+      return;
+    }
+    if (!RelSymOrErr->Name.empty()) {
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jh7370 wrote:

Unnecessary braces.

https://github.com/llvm/llvm-project/pull/157499