commit 5cd7a6f916b7b11f9955587e413af95c3f45bc7b
author Adrian Prantl <aprantl@apple.com> Wed Oct 16 16:30:38 2019 +0000
committer Adrian Prantl <aprantl@apple.com> Wed Oct 16 16:30:38 2019 +0000
tree 40052ce646dc3bf5e9abecfc7c4c16a7e39a1a93
parent 9db088e09ee7d5574b0fb4086d9258e9fb062c42

[DWARF5] Added support for DW_AT_noreturn attribute to be emitted for
C++ class member functions.

Patch by Sourabh Singh Tomar!

Differential Revision: https://reviews.llvm.org/D68697

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@375012 91177308-0d34-0410-b5e6-96231b3b80d8

lib/CodeGen/CGDebugInfo.cpp

diff --git a/lib/CodeGen/CGDebugInfo.cpp b/lib/CodeGen/CGDebugInfo.cpp
index 3d140ba..7962ae0 100644
--- a/lib/CodeGen/CGDebugInfo.cpp
+++ b/lib/CodeGen/CGDebugInfo.cpp
@@ -1605,6 +1605,8 @@
     ContainingType = RecordTy;
   }
 
+  if (Method->isNoReturn())
+    Flags |= llvm::DINode::FlagNoReturn;
   if (Method->isStatic())
     Flags |= llvm::DINode::FlagStaticMember;
   if (Method->isImplicit())

test/CodeGenCXX/debug-info-noreturn.cpp

diff --git a/test/CodeGenCXX/debug-info-noreturn.cpp b/test/CodeGenCXX/debug-info-noreturn.cpp
new file mode 100644
index 0000000..85b8132
--- /dev/null
+++ b/test/CodeGenCXX/debug-info-noreturn.cpp
@@ -0,0 +1,19 @@
+// RUN: %clang_cc1 -std=c++11 -emit-llvm -fcxx-exceptions -debug-info-kind=standalone  %s -o - | FileCheck %s
+// Test for NoReturn flags in debug info.
+
+// CHECK: DISubprogram(name: "f", {{.*}}, flags: DIFlagPrototyped | DIFlagNoReturn, spFlags: DISPFlagDefinition
+// CHECK: DISubprogram(name: "foo_member", {{.*}}, flags: DIFlagPrototyped | DIFlagNoReturn, spFlags: 0
+// CHECK-NOT: DISubprogram(name: "func",{{.*}}, flags: DIFlagPrototyped | DIFlagNoReturn, spFlags: DISPFlagDefinition
+
+class foo {
+
+  [[noreturn]] void foo_member() { throw 1; }
+};
+
+[[noreturn]] void f() {
+  throw 1;
+}
+
+void func() {
+  foo object;
+}