[AMDGPU] Restructure code object metadata creation

  - Rename runtime metadata -> code object metadata
  - Make metadata not flow
  - Switch enums to use ScalarEnumerationTraits
  - Cleanup and move AMDGPUCodeObjectMetadata.h to AMDGPU/MCTargetDesc
  - Introduce in-memory representation for attributes
  - Code object metadata streamer
  - Create metadata for isa and printf during EmitStartOfAsmFile
  - Create metadata for kernel during EmitFunctionBodyStart
  - Finalize and emit metadata to .note during EmitEndOfAsmFile
  - Other minor improvements/bug fixes

Differential Revision: https://reviews.llvm.org/D29948

llvm-svn: 298552

3 files changed, 10 insertions, 9 deletions

diff --git a/llvm/tools/llvm-readobj/ELFDumper.cpp b/llvm/tools/llvm-readobj/ELFDumper.cpp
index 4ab3d303ce0..31bc9c15baa 100644
--- a/llvm/tools/llvm-readobj/ELFDumper.cpp
+++ b/llvm/tools/llvm-readobj/ELFDumper.cpp
@@ -129,7 +129,7 @@ public:
   void printMipsReginfo() override;
   void printMipsOptions() override;
 
-  void printAMDGPURuntimeMD() override;
+  void printAMDGPUCodeObjectMetadata() override;
 
   void printStackMap() const override;
 
@@ -2357,7 +2357,7 @@ template <class ELFT> void ELFDumper<ELFT>::printMipsOptions() {
   }
 }
 
-template <class ELFT> void ELFDumper<ELFT>::printAMDGPURuntimeMD() {
+template <class ELFT> void ELFDumper<ELFT>::printAMDGPUCodeObjectMetadata() {
   const Elf_Shdr *Shdr = findSectionByName(*Obj, ".note");
   if (!Shdr) {
     W.startLine() << "There is no .note section in the file.\n";
@@ -2365,7 +2365,7 @@ template <class ELFT> void ELFDumper<ELFT>::printAMDGPURuntimeMD() {
   }
   ArrayRef<uint8_t> Sec = unwrapOrError(Obj->getSectionContents(Shdr));
 
-  const uint32_t RuntimeMDNoteType = 8;
+  const uint32_t RuntimeMDNoteType = 10;
   for (auto I = reinterpret_cast<const Elf_Word *>(&Sec[0]),
        E = I + Sec.size()/4; I != E;) {
     uint32_t NameSZ = I[0];
diff --git a/llvm/tools/llvm-readobj/ObjDumper.h b/llvm/tools/llvm-readobj/ObjDumper.h
index 75090312b21..109087be79b 100644
--- a/llvm/tools/llvm-readobj/ObjDumper.h
+++ b/llvm/tools/llvm-readobj/ObjDumper.h
@@ -59,7 +59,7 @@ public:
   virtual void printMipsOptions() { }
 
   // Only implemented for AMDGPU ELF at this time.
-  virtual void printAMDGPURuntimeMD() {}
+  virtual void printAMDGPUCodeObjectMetadata() {}
 
   // Only implemented for PE/COFF.
   virtual void printCOFFImports() { }
diff --git a/llvm/tools/llvm-readobj/llvm-readobj.cpp b/llvm/tools/llvm-readobj/llvm-readobj.cpp
index fffcd1790e3..d9178285751 100644
--- a/llvm/tools/llvm-readobj/llvm-readobj.cpp
+++ b/llvm/tools/llvm-readobj/llvm-readobj.cpp
@@ -186,9 +186,10 @@ namespace opts {
   cl::opt<bool> MipsOptions("mips-options",
                             cl::desc("Display the MIPS .MIPS.options section"));
 
-  // -amdgpu-runtime-metadata
-  cl::opt<bool> AMDGPURuntimeMD("amdgpu-runtime-metadata",
-                                cl::desc("Display AMDGPU runtime metadata"));
+  // -amdgpu-code-object-metadata
+  cl::opt<bool> AMDGPUCodeObjectMetadata(
+      "amdgpu-code-object-metadata",
+      cl::desc("Display AMDGPU code object metadata"));
 
   // -coff-imports
   cl::opt<bool>
@@ -422,8 +423,8 @@ static void dumpObject(const ObjectFile *Obj) {
         Dumper->printMipsOptions();
     }
     if (Obj->getArch() == llvm::Triple::amdgcn)
-      if (opts::AMDGPURuntimeMD)
-        Dumper->printAMDGPURuntimeMD();
+      if (opts::AMDGPUCodeObjectMetadata)
+        Dumper->printAMDGPUCodeObjectMetadata();
     if (opts::SectionGroups)
       Dumper->printGroupSections();
     if (opts::HashHistogram)