From 7fa27ce4a07f19b07799a767fc29416f3b625afb Mon Sep 17 00:00:00 2001
From: Dimitry Andric <dim@FreeBSD.org>
Date: Wed, 26 Jul 2023 21:03:47 +0200
Subject: Vendor import of llvm-project main
 llvmorg-17-init-19304-gd0b54bb50e51, the last commit before the upstream
 release/17.x branch was created.

---
 llvm/lib/Object/BuildID.cpp | 31 ++++++++++++++++++-------------
 1 file changed, 18 insertions(+), 13 deletions(-)

(limited to 'llvm/lib/Object/BuildID.cpp')

diff --git a/llvm/lib/Object/BuildID.cpp b/llvm/lib/Object/BuildID.cpp
index 795c22e769aa..ef21458060ab 100644
--- a/llvm/lib/Object/BuildID.cpp
+++ b/llvm/lib/Object/BuildID.cpp
@@ -18,13 +18,12 @@
 #include "llvm/Support/FileSystem.h"
 #include "llvm/Support/Path.h"
 
-namespace llvm {
-namespace object {
+using namespace llvm;
+using namespace llvm::object;
 
 namespace {
 
-template <typename ELFT>
-std::optional<BuildIDRef> getBuildID(const ELFFile<ELFT> &Obj) {
+template <typename ELFT> BuildIDRef getBuildID(const ELFFile<ELFT> &Obj) {
   auto PhdrsOrErr = Obj.program_headers();
   if (!PhdrsOrErr) {
     consumeError(PhdrsOrErr.takeError());
@@ -37,7 +36,7 @@ std::optional<BuildIDRef> getBuildID(const ELFFile<ELFT> &Obj) {
     for (auto N : Obj.notes(P, Err))
       if (N.getType() == ELF::NT_GNU_BUILD_ID &&
           N.getName() == ELF::ELF_NOTE_GNU)
-        return N.getDesc();
+        return N.getDesc(P.p_align);
     consumeError(std::move(Err));
   }
   return {};
@@ -45,15 +44,24 @@ std::optional<BuildIDRef> getBuildID(const ELFFile<ELFT> &Obj) {
 
 } // namespace
 
-std::optional<BuildIDRef> getBuildID(const ObjectFile *Obj) {
+BuildID llvm::object::parseBuildID(StringRef Str) {
+  std::string Bytes;
+  if (!tryGetFromHex(Str, Bytes))
+    return {};
+  ArrayRef<uint8_t> BuildID(reinterpret_cast<const uint8_t *>(Bytes.data()),
+                            Bytes.size());
+  return SmallVector<uint8_t>(BuildID.begin(), BuildID.end());
+}
+
+BuildIDRef llvm::object::getBuildID(const ObjectFile *Obj) {
   if (auto *O = dyn_cast<ELFObjectFile<ELF32LE>>(Obj))
-    return getBuildID(O->getELFFile());
+    return ::getBuildID(O->getELFFile());
   if (auto *O = dyn_cast<ELFObjectFile<ELF32BE>>(Obj))
-    return getBuildID(O->getELFFile());
+    return ::getBuildID(O->getELFFile());
   if (auto *O = dyn_cast<ELFObjectFile<ELF64LE>>(Obj))
-    return getBuildID(O->getELFFile());
+    return ::getBuildID(O->getELFFile());
   if (auto *O = dyn_cast<ELFObjectFile<ELF64BE>>(Obj))
-    return getBuildID(O->getELFFile());
+    return ::getBuildID(O->getELFFile());
   return std::nullopt;
 }
 
@@ -88,6 +96,3 @@ std::optional<std::string> BuildIDFetcher::fetch(BuildIDRef BuildID) const {
   }
   return std::nullopt;
 }
-
-} // namespace object
-} // namespace llvm
-- 
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