[lldb] Support for DWARF-5 atomic types

Summary:
This patch adds support for atomic types (DW_TAG_atomic_type) to LLDB. It's mostly just filling out all the switch-statements that didn't implement Atomic case with the usual boilerplate.

Thanks Pavel for writing the test case.

Reviewers: labath, aprantl, shafik

Reviewed By: labath

Subscribers: jfb, abidh, JDevlieghere, lldb-commits

Tags: #lldb

Differential Revision: https://reviews.llvm.org/D71183

1 files changed, 17 insertions, 1 deletions

diff --git a/lldb/source/Symbol/ClangASTContext.cpp b/lldb/source/Symbol/ClangASTContext.cpp
index cf7f2caa51d..b765dfb3df3 100644
--- a/lldb/source/Symbol/ClangASTContext.cpp
+++ b/lldb/source/Symbol/ClangASTContext.cpp
@@ -4066,6 +4066,11 @@ ClangASTContext::GetTypeInfo(lldb::opaque_compiler_type_t type,
                                   ->getUnderlyingType()
                                   .getAsOpaquePtr())
         .GetTypeInfo(pointee_or_element_clang_type);
+  case clang::Type::Atomic:
+    return CompilerType(this, llvm::cast<clang::AtomicType>(qual_type)
+                                  ->getValueType()
+                                  .getAsOpaquePtr())
+        .GetTypeInfo(pointee_or_element_clang_type);
   case clang::Type::UnresolvedUsing:
     return 0;
 
@@ -4760,6 +4765,13 @@ ClangASTContext::GetRValueReferenceType(lldb::opaque_compiler_type_t type) {
     return CompilerType();
 }
 
+CompilerType ClangASTContext::GetAtomicType(lldb::opaque_compiler_type_t type) {
+  if (!type)
+    return CompilerType();
+  return CompilerType(
+      this, getASTContext()->getAtomicType(GetQualType(type)).getAsOpaquePtr());
+}
+
 CompilerType
 ClangASTContext::AddConstModifier(lldb::opaque_compiler_type_t type) {
   if (type) {
@@ -5364,6 +5376,11 @@ lldb::Format ClangASTContext::GetFormat(lldb::opaque_compiler_type_t type) {
                                   ->getUnderlyingType()
                                   .getAsOpaquePtr())
         .GetFormat();
+  case clang::Type::Atomic:
+    return CompilerType(this, llvm::cast<clang::AtomicType>(qual_type)
+                                  ->getValueType()
+                                  .getAsOpaquePtr())
+        .GetFormat();
   case clang::Type::DependentSizedArray:
   case clang::Type::DependentSizedExtVector:
   case clang::Type::UnresolvedUsing:
@@ -5379,7 +5396,6 @@ lldb::Format ClangASTContext::GetFormat(lldb::opaque_compiler_type_t type) {
 
   case clang::Type::TemplateSpecialization:
   case clang::Type::DeducedTemplateSpecialization:
-  case clang::Type::Atomic:
   case clang::Type::Adjusted:
   case clang::Type::Pipe:
     break;